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Systematic Review
Revised

The use of eHealth to promote physical activity in people with mental health conditions: a systematic review

[version 3; peer review: 3 approved]
Previously titled: The use of eHealth to promote physical activity in patients with mental health conditions: a systematic review
PUBLISHED 10 Aug 2018
Author details Author details
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REVIEWER STATUS

Abstract

Background: Achieving adequate amounts of physical activity (PA) confers important physical and mental health benefits. Despite this, people with mental health conditions often do not meet recommended levels of PA. eHealth, the delivery of health information through internet and mobile technologies, is an emerging concept in healthcare which presents opportunities to improve PA. The aim of this systematic review is to describe the use of eHealth to increase or monitor PA levels in people with mental health conditions.
Methods: Databases searched included OVID Medline, EMBASE, PsychInfo and Web of Science using a combination of key-words and medical subject headings. Articles were included if they described an eHealth technology designed to improve or monitor PA in people with mental health conditions. Two reviewers screened articles. Articles included in the qualitative synthesis were screened for risk of bias using the Cochrane Risk of Bias Tool for experimental studies and Downs and Black Checklist for non-experimental studies.
Results: Seven studies met the eligibility criteria. A variety of eHealth platforms designed to promote or monitor PA were described in these studies; web-based (n=4), web and mobile application (n=3) and e-mail-based (n=1), one study used both a web-based and mobile application. Three studies reported eHealth interventions significantly increased PA levels, however it is unclear if eHealth interventions are superior at promoting PA compared to conventional interventions. Four studies reported that higher levels of PA, measured using eHealth, were associated with better mental health profiles. 
Conclusion: eHealth interventions may be an innovative low-cost method to increase PA levels which may have knock-on effects on mental health outcomes. Although some of the included studies in this review demonstrated promising results, methodological restrictions and potential biases from using subjective measures of PA limit the interpretability of these results. Future research should evaluate this promising technology using well-designed trials.

Keywords

eHealth, technology, mental health, physical activity

Revised Amendments from Version 2

In this version of the article, an additional column has been added to Table 1. This column presents to the reader if interventions consisted of a standalone eHealth based physical activity intervention, or if the eHealth physical activity intervention was a component of a multimodal intervention. In addition, some small grammar changes have been made.

See the authors' detailed response to the review by Helen P. French
See the authors' detailed response to the review by Jennifer M. Ryan
See the authors' detailed response to the review by Olive Lennon and Caitriona Cunningham

Introduction

Physical activity (PA) is associated with a number of health-related benefits such as improved cardiovascular health, bone strength, and a reduced risk of developing chronic conditions such as colorectal and breast cancers, cardiovascular disease, and Type II diabetes1,2. In addition, the benefits of PA among people with mental health conditions extend beyond physical health benefits and include improved mood and sleep, reduced stress, and enhanced self-esteem3,4. Despite the numerous physical and mental benefits of PA, insufficient levels are prevalent among people with mental health conditions5,6. The low levels of PA among this population and potential mental and physical health gains make a strong case to explore innovative and effective ways to improve PA levels.

eHealth is a relatively new concept in healthcare which may present unique opportunities to improve PA levels. eHealth is an umbrella term including ‘the transfer of health resources and health care by electronic means, including, but not limited to the delivery of health information through the internet and mobile technologies’7,8. The implementation of internet technology in health-care provides a number of benefits such as convenience for users, easy storage of large amounts of information, ease of updating information, and ability to provide personalized feedback9. eHealth interventions have been extensively studied in a number of populations ranging from cancer survivors to community dwelling adults1014. Systematic review evidence has consistently supported the effectiveness of eHealth interventions to increase PA levels.

eHealth based interventions may be well suited to improve PA levels among people with mental health conditions. Internet-based interventions have previously addressed several barriers common to traditional PA based interventions including overcoming geographical restrictions and combating a lack of human resources15. These advantageous features are some of the reasons the National Institute for Clinical Excellence (NICE) has identified computerised cognitive behavioural therapy as part of an approach to improving standard care of people with depression16. In addition, these features may be applicable to help promote PA in people with mental health conditions. Furthermore, people with mental health conditions are reported willing to use eHealth for health-related reasons. A study of 100 people with mental health conditions at a psychiatric outpatient facility reported that 72% of people owned a smartphone and 67% were eager to use a smartphone application to track their condition17. Therefore, eHealth interventions may potentially be a useful platform to monitor and increase PA levels in people with mental health conditions.

To our knowledge, no systematic review has synthesised the literature in the field of eHealth and PA for people with mental health conditions. To address this gap, the aim of this systematic review was to describe the use of eHealth to increase or monitor PA levels in people with mental health conditions. Secondary objectives of this review included (i) To investigate the effectiveness of eHealth interventions as a stand-alone or multimodal intervention to promote PA in people with a mental health condition (ii) To explore the extent to which eHealth technologies are used to measure PA among people with mental health conditions (iii) To report associations between PA measured using eHealth devices and mental health outcomes.

Methods

Study design

This systematic review was conducted to identify eHealth technologies with a primary or secondary aim to promote or monitor PA in people with mental health conditions. The “Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)”18 and the criteria outlined in “A Measurement Tool to Assess Systematic Reviews (AMSTAR) checklist”19 guidelines were followed in drafting this review (PRISMA checklist in Supplementary File 1). The protocol outlining the planned search strategy and method of analysis for this review was registered online and is available on PROSPERO, a registry of systematic reviews (CRD42017068834). It was originally planned to include intervention based studies only, however due to the relative paucity of available trials due to the emerging nature of this research field, a pragmatic decision was taken to broaden the objectives of the review. Therefore, studies that used eHealth technology to monitor PA among people with mental health conditions were also included.

Eligibility criteria

Experimental studies and observational studies, with or without controls, were eligible for inclusion if they evaluated an eHealth-based technology to promote or monitor PA, (internet and mobile technologies) delivered to participants with mental health conditions which included PA as a primary or secondary outcome measure. As per Ritterband et al. (2006)2 we included eHealth research into the use of web-based and mobile health technologies to measure, track or encourage increases in PA levels among people with mental health conditions. Mental health conditions were characterized as some combination of abnormal thoughts, emotions and relationships with others20, which included but was not limited to; depression, bipolar disorder, anxiety disorders and schizophrenia, spectrum disorders. Single eHealth interventions or multi-modal interventions in conjunction with eHealth were included. Studies were excluded if only telephone calls, short message service (SMS) or conference calls were used. Authors of relevant abstracts or conference presentations were contacted to obtain a full-text article or detailed methodology and data set. Abstracts and conference presentations without an accompanying full-text article were excluded due to lack of a detailed methodology and potential for high risk of bias. Review articles, case studies and letters to the editor were also excluded.

PA is a complex multi-dimensional construct measured through objective (e.g. indirect calorimetry, accelerometers, pedometers) or self-report methods (e.g. questionnaire, log)21. Domains of PA can be considered on a continuum from light activity (e.g. slow walking) through to moderate level activity (e.g. brisk walking) and vigorous activity (e.g. jogging). Sedentary behaviour consists of low levels of activity, similar to resting (e.g. sitting or lying down)22. There are many different ways of quantifying PA. We included the following methods of quantifying PA, but not limited to the following; MET-minutes.week-1, minutes in light, moderate and/or vigorous PA per week, and meeting/not meeting PA guidelines (150 minutes per week of moderate/vigorous activity)23. All methods of measuring PA were included e.g. self-report, objective or direct measures.

Data sources & search strategy

An experienced medical librarian was consulted and a comprehensive search strategy was developed with all keywords and subject headings included (DM). The search strategy consisted of a search of four electronic databases: OVID Medline, EMBASE, PsychInfo, and Web of Science. Search terms included keywords and medical subject headings adapted for each database. These related to three categories: 1) the condition (e.g. ‘mental health’ ‘depression’, ‘bipolar disorder’, ‘schizophrenia’ and ‘anxiety disorder’), 2) technology (e.g.‘teleHealth’, ‘telerehabilitation’, ‘mobile health’, ‘Mhealth’, ‘eHealth’, ‘e-health’, ‘mobile technology’, ‘smartphone’), and 3) PA (e.g. ‘exercise’, ‘physical activity’, ‘exercise therapy’, ‘physiotherapy’). There was no limit placed on the year published as it was believed that the search strategy would produce only articles published within the last ten years, due to the relatively novel nature of this technology. Databases were searched until August 2017. The bibliographies of all included studies were examined to identify further studies. The search strategy is available in Supplementary File 2.

Selection of eligible studies

Two researchers (JM and GK), independently screened titles and abstracts to identify studies that met the eligibility criteria. Any disagreements between researchers were discussed and if a consensus could not be reached a third researcher (JB) intervened. All full-texts were retrieved and examined in detail to assess for inclusion in this review.

Risk of bias and classification of intervention type within studies

Two researchers (JM and GK) independently appraised the risk of bias of included studies; any disagreements were resolved through discussion. The Downs and Black checklist was used to assess the risk of bias of all included observational studies24. This checklist contains 27 items, with a maximum possible score of 32 points. The final score is variable as some items of the checklist may not be applicable and can be excluded. In addition, the Cochrane Collaboration’s tool25 was used to assess risk of bias for each RCT. Risk of bias was assessed in the following six areas; sequence generation (randomisation); allocation concealment; blinding of participants, personnel and investigator; incomplete data (e.g. losses to follow-up, intention-to treat analysis); selective outcome reporting; and other possible sources of bias.

Data extraction & analysis

Data were extracted by two researchers (JM and GK) independently onto standardised data extraction forms. Any disagreements were discussed, if a consensus could not be reached, a third member of the research team (JB) arbitrated. The standardised data extraction form was piloted on two randomly selected studies and modified accordingly. Data were extracted using the following headings: methods, allocation, blinding, duration, design, setting, participants, diagnosis, age, sex, inclusion criteria, exclusion criteria, intervention, control group, primary outcomes, secondary outcomes, results in PA outcomes, results in secondary outcomes.

Results

Study selection & design

The PRISMA flow diagram outlines study selection (Figure 1). A total of 2,994 articles were retrieved and 191 duplicates were removed. Following title and abstract screening, 2,728 articles were excluded leaving 75 full-text articles to be screened. Six abstracts were excluded as following contact with abstract authors, no full-texts could be obtained. Ultimately, seven articles were included in this review.

89d30255-9279-47fe-97f8-cc38ae4ad6cb_figure1.gif

Figure 1. PRISMA Flow diagram of study selection.

Types of studies were mixed, including RCTs (n=3) and observational studies (n=4). Table 1 describes the methodological features of included studies. Included studies were varied in design, likely reflecting this emerging research field. Three studies compared an eHealth intervention to a control group. The remaining studies (n=4) used an eHealth intervention to measure PA in participants with mental health conditions. Mobile technologies such as smartphones and the Fitbit were used to measure PA levels and predict clinical signs and symptoms of mental health conditions such as mood. The length of interventions ranged from 9 days to 12 months26,27, with the majority of studies not assessing PA post-study completion. Only one study assessed maintenance at 6 months post-baseline28.

Table 1. Study methodology & participant characteristics.

Author,
Year
CountryDesignDurationParticipantsAge: Mean
(SD) years
GenderMental Health
Conditions
eHealth as a
Standalone or
Component
of Multimodal
Intervention
Inclusion CriteriaExclusion Criteria
Beiwinkel
et al., 201627
GermanyPilot
Observational
Cohort Study
12 months13 participants
with bipolar
disorder
47.2 (3.8) Male: 8

Female: 5
13 participants
with bipolar
disorder
N/ADiagnosis of bipolar I or bipolar II disorder
according to the criteria in the DSM-IV

≥18 years of age

Sufficient knowledge of the German
language

Basic competence in using mobile devices
The need for inpatient
treatment at the time of
recruitment

Suicidality

Diagnosis of
schizophrenia or an
intellectual disability

Alcohol or drug abuse
up to 6 months prior to
the study
Glozier
et al., 201330
AustraliaRCT12 weeks562

(75 drop-outs)

487 analysed
IG: 57.5
(6.6)

CG: 58.4
(6.6)
IG: Female,
173 (61.8%)

CG: Female,
172 (61.0%)
487 participants
with psychological
distress
Multimodal:
Internet delivered
cognitive
behavioural
therapy designed
to address
areas including
physical activity
and symptoms of
depression
Self-reported history of CVD, or risk factors
for CVD, defined as any one of the following:
receiving treatment for heart attack/angina,
other heart disease, hypertension or high
blood cholesterol in the past month; taking
medications for heart disease, hypertension
or high blood cholesterol in the past month;
previous doctor’s diagnosis of heart disease,
stroke or hypertension; previous doctor’s
diagnosis of diabetes and report taking
glucose lowering therapy in the past month;
two or more of the following risk factors:
current smoker, obese (BMI>30), aged
65 years or more, family history of heart
disease or stroke in two or more first degree
relatives, all of which are well established
risk factors for CVD

Psychological distress at recruitment to the
health survey, defined with a high sensitivity
as a Kessler-10 (K-10) score of greater than
or equal to 16. This screening score reflects
distress six months to three years prior to
trial recruitment

Provided an email address established as
previously valid through 45 and Up Study
checking processes
N/R
Kerr et al.,
200831
USAPilot Non-
Randomised
Study
12 weeks36

(13 drop-outs)
44.1 (9.8)Males: 9
(25%)

Females: 27
(75%)
36 participants
with depression
N/AEnglish speaking men and women, aged
25–65 years,

with newly diagnosed or recurrent mild-to-
moderate depression (PHQ-9 score 15 or
greater at screening)

Doctor approved prescription of
escitalopram (Lexapro)

Telephone and internet access at home

Ability to participate in mild- to moderate-
intensity physical activity (PAR-Q)

Willingness to participate in all study
components
Individuals currently
receiving psychotherapy
for their depression
from a psychiatrist or
psychologist and those
at high risk for suicide as
assessed by the PHQ-9
suicide item.
Mailey et al.,
201029
USAPilot RCT10 weeks4725 (range
18–52)

Not
separated by
groups
Females: 32
(68.1%)

Males: 15
(32%)

Not
separated by
groups
Participants
receiving
mental health
counselling.

No further details
supplied.
Standalone:
Physical activity
website. The
website featured
four models
based on social
cognitive theory.
Be registered for and receiving mental
health counselling services

A student at the university

Able to participate in physical activity
without exacerbating a pre-existing
condition

Access to a personal computer with internet
connection.
N/R
Naslund
et al., 201632
USAObservational
Cohort Study
6 months43 recruited

(9 drop-outs)
50.2 (11.0)Female: 21
(61.8%)

Male: 13
(38.2%)
Schizophrenia
spectrum
disorders: 8
(23.5%)

Major depressive
disorder: 17
(50.0%)

Bipolar disorder:
9 (26.5%)
N/A≥21 years old

Serious mental illness defined by an axis I
diagnosis of schizophrenia, schizoaffective
disorder, major depressive disorder, or
bipolar disorder

Speaks English

On stable pharmacological treatment
defined as receiving the same psychiatric
medications over the prior 2 months

Obesity (BMI ≥30).
Participants were
excluded if they had any
medical contraindication
to weight loss

Pregnant or planning to
become pregnant within
the next 6 months

Current diagnosis of an
active alcohol-use or
substance-use disorder
Shin et al.,
201626
South
Korea
Observational
Cohort Study
9 days61 analysed46.59 (8.40)Males: 35
(52.4%)

Women: 26
(42.6%)
61 participants
with
schizophrenia
N/APatient had to be hospitalized with chronic
schizophrenia in a closed ward

Be involved in ordinary activity in a regular
psychiatric treatment program

Agree to wear an activity tracker and keep it
continuously for a week
Patients who were
restricted from outdoor
activity

Patients with severe
medical conditions
affecting physical
activity

Patient with conditions
such as akathisia,
delirium, idiopathic
or drug induced
Parkinsonism and
epilepsy

Patients who lacked an
understanding of this
study due to psychiatric
symptoms or moderate
intellectual disability
Ström et al.,
201328
SwedenRCT9 weeks48 participants

IG: 24

CG: 24
Total: 49.2
(10.7)

IG: 48.8
(12.7)

CG: 49.6
(8.7)
Total:
Female = 40;
Male = 8

IG: Female =
20; Male = 4

CG: Female=
20; Male = 4
48 participants
with mild to
moderate
depression
Standalone:
Physical activity
based self-help
programme
administered via
the Internet
Mild to moderate major depression
diagnosis

A sedentary lifestyle
Subclinical depressive
symptoms, severe
depressive symptoms,
dysthymia as a primary
diagnosis, elevated
suicide risk

High levels of physical
activity prior to treatment

Recent changes in
medication

Somatic illness making
physical exercise
inappropriate

BMI: Body Mass Index, CG: Control group, CVD: Cardiovascular disease, DSM-VI: Diagnostic and Statistical Manual of Mental Disorders 4th edition, IG: Intervention group, N/A: Not applicable, N/R: Not reported, PAR-Q; Physical Activity Readiness – Questionnaire, PHQ-9: Patient Health Questionnaire-9.

A quantitative synthesis of included data were planned, but was deemed inappropriate due to the heterogeneity of study design, participants, interventions and outcomes. Consequently, a qualitative synthesis of study interventions and results was completed. A number of sub-group analyses were planned, including comparing self-report and objectively measured PA and intervention focus such as smart phone applications vs. web-based interventions. Due to insufficient data in included studies these comparisons could not be completed.

Participant characteristics

Participant characteristics are also summarised in Table 1. A total of 811 participants were recruited with 102 dropping out. Ultimately, 709 participants were analysed across seven studies. A total of 101 participants analysed had depression. There were 487 participants with psychological distress, identified with a score of ≥ 16 using the Kessler-10 screening tool. The remaining mental health conditions included; schizophrenia or schizophrenia spectrum disorders (n=69) and bipolar disorders (n=22). One study did not report the specific diagnoses of mental health conditions included29.

eHealth interventions and control treatments

A variety of eHealth platforms designed to increase PA were described in these studies; web-based (n=4), web and mobile application (n=3) and e-mail-based (n=1), one study used both a web-based and mobile application26. A breakdown of each technological intervention is detailed in Table 2 below.

Table 2. Features of E-Health technologies and interventions employed in included studies.

Author, yearPlatform for
intervention
App/
software
PersonalisationBehaviour
change theory
PA Reporting
by user
InteractionFeedback
Web appMobile appEmailWebYesNoSCTTTMTheory of Goal SettingCBTTypeDurationIntensityReal-timeAutomated remindersTelEmailPushSMS
Beiwinkel et al.,
201627
-X--SIMBAX-----X-----X-
Glozier et al.,
201330
---XE-couch and
Healthwatch
-X---X-X-XXX---
Kerr et al.,
200831
--X--X-X--XX-X-XX--
Mailey et al.,
201029
---XIPACSX-X---XXX--X--
Naslund et al.,
201632
-X--Fitbit-X--XXX-X----X
Shin et al.,
201626
-X-XFitbitX-----XX-------
Ström et al.,
201328
---X - X----XXX-X--X--

CBT; Cognitive Beahvioural Therapy, IPACS; Internet Physical Activity for College Students, SIMBA; Social Information Monitoring for Patients with Bipolar Affective Disorder, SCT-Social Cognitive Theory, TTM-Trans Theoretical Model.

eHealth interventions included internet delivered cognitive behavioural therapy (CBT)30. An internet-based PA intervention and an internet-based therapist delivered self-help programme28,29. Control treatments included standard care29, waiting list care28 and an active control group30. Participants in the active control group underwent a 12-week online programme that delivers health information on topics including nutrition, stroke, PA, medicines in the home, blood pressure and cholesterol, and heart health.

All experimental studies (n=3) reported eHealth interventions significantly increased PA levels from baseline, however, it is unclear if eHealth interventions are superior to traditional mental health services at increasing PA. Glozier and colleagues reported a greater proportion of participants with psychological distress (n=487) engaging in the recommended levels of PA (≥150 mins a week) who performed internet based cognitive behavioural therapy (ICBT) compared to the online active control group (67% in ICBT vs 61% in control group, Odds Ratio: 1.91, 95% CI: 1.01–3.61). In contrast two studies reported there were no significant differences in PA levels between eHealth interventions and control treatments. Mailey and colleagues noted an increase in PA in both the internet delivered PA intervention and standard care control group. However, there was a larger increase in mean PA in the intervention group (Pre: 243421.81 vs. Post: 299791.57, Cohen’s d=0.68) compared to the control group (Pre: 247753.55 vs. Post: 251625.04, Cohen’s d=0.05) as measured using the Actigraph accelerometer. Furthermore, Ström and colleagues noted PA significantly increased in both the intervention and control groups, however, there was no significant difference between the CBT based eHealth intervention and waiting list control group.

Physical activity assessment

Objective methods of measuring PA included smartphones (GPS, cell tower movement and accelerometer data)27, wearable technologies (Fitbit)26,32, accelerometers29 and pedometers31 as shown in Table 3. The remaining studies (n=2) used the International Physical Activity Questionnaire (IPAQ) to subjectively measure PA28,30.

Table 3. Physical activity outcomes.

Author, yearIntervention (IG) and control group
(CG)
Physical activity outcomes and result
How PA recordedMethod of PA quantificationBaseline and end-intervention PA results: Mean (Standard
Deviation) unless otherwise stated.
Beiwinkel et al.,
201627
IG: Physical activity recorded over 12
months in 13 participants with bipolar
disorder

CG: N/A
Smartphone. Three smartphone sensors
were used to measure physical activity.

(GPS for the distance travelled per day,
cell tower movement as an indicator of
location changes, and accelerometer to
measure the users’ device activity)
GPS, distance travelled (km)

Cell tower changes

Device activity, % of day
Distance travelled as measured by the GPS signal had a
significant negative relationship with clinical manic symptoms
(YMRS: beta=-.37, P<.001).

An increase in cell tower movement was negatively related to
both manic symptoms (YMRS: beta=-.17, P<.001) and depressive
symptoms (HAMD: beta=-.11, P=.03)
Glozier et al.,
201330
IG: 12 weeks of internet delivered
cognitive behavioural therapy

CG: 12-week online programme that
delivers health information on topics
including nutrition, stroke, physical
activity, medicines in the home, blood
pressure and cholesterol, and heart
health
IPAQThe average time spent walking
per day and a composite
measure of undertaking
enough exercise to provide a
health benefit (defined as at
least 150 mins of activity over 5
or more occasions each week)
Post-intervention

Activity sufficient to confer a health benefit post intervention
(150 mins over 5 occasions/week) (N=number of participants)

IG: N=136 (67%)

CG: N=165 (61%) (Odds Ratio 1.91, 95%CI: 1.01–3.61),

Average walking time per day

0–14 mins per day, IG: N=78 (38%), CG: N=116 (43%)

15–29 mins per day, IG: N=47 (23%), CG: N=64 (23%)

30+ mins per day, IG: N=79 (39%), CG: N=92 (34%)

(Odds ratio = 1.46, 95% CI: 0.81–2.62)
Kerr et al.,
200831
IG: A community based physical
activity intervention (involving internet,
telephone, and pedometer support),
integrated with medication and mood
management for depressed patients

CG: N/A
PedometerSteps per day

Units of measurement for
sedentary behavior were not
reported
All participants (n=36)

Daily step count: Mean (SE)

Baseline: 6604.1 (883.6)

6 weeks: 8558.8 (868.8)

12 weeks: 9053.3 (818.1)

Significantly different baseline to 12 weeks: p=0.03

Sedentary behavior: Mean (SE)

Baseline: 62.2 (5.0)

6 weeks: 58.9 (4.2)

12 weeks: 57.6 (4.2)

Not significantly different at any time-point: p=0.15

Completers only (n=23)

Daily step count: Mean (SE)

Baseline: 6656.2 (1618.7)

6 weeks: 8903.2 (1665.2)

12 weeks: 8550.0 (1374.4)

Not significantly different at any time-point: p=0.22

Sedentary behavior: Mean (SE)

Baseline: 63.4 (6.3)

6 weeks: 58.9 (4.3)

12 weeks: 56.8 (4.4)

Not significantly different at any time-point: p=0.09
Mailey et al.,
201029
IG: An internet-based physical activity
intervention on physical activity,
self-efficacy, depression, and anxiety
in college students (n=23) receiving
mental health counselling

CG: Standard mental health care
(n=24)
Actigraph accelerometerTotal daily activity score
presented as 1-minute
epochs

Daily totals were averaged
across five days of continuous
activity
Physical activity pre-intervention

IG: 243421.81 (62414.56)

CG: 247753.55 (69613.96)

Physical activity post-intervention

IG: 299791.57 (102800.00)

CG: 251625.04 (83080.77)

Pre and post intervention physical activity: Cohen’s d = 0.68

Pre and post control group physical activity: Cohen’s d = 0.05

A significant main effect for time with both conditions increasing
their physical activity levels across the 10-week period, F (1, 40) =
4.20, p=0.04, n2 = 0.09.
Naslund et al.,
201632
IG: Daily step count measured using
Fitbit wearable devices to improve
weight loss and fitness among
individuals with serious mental
illness enrolled in a 6-month lifestyle
programme

CG: N/A
FitbitSteps per dayParticipants achieved an average of 4453.5 (SD = 2707.4) steps
each day over the 6 month study period.

Average daily step counts ranged from 1037.6 (SD = 767.9) steps
to 11,366.3 (SD = 3416.9) steps.

21 (61.8%) participants achieved 10,000 steps or more on at least
one day.

There was a significant association between participants’ average
daily step count and weight loss.

For every 1000 step increase in participants’ daily average step
count, they experienced a decrease in weight of 1.78 pounds
(F = 5.07; df = 1, 32; p = 0.0314).

The relationship between participants' average daily step
count and change in fitness (measured in feet using the 6-Minute Walk
Test) was not significant (F = 1.92; df = 1, 31; p = 0.176).

A within group analysis was not performed.
Shin et al.,
201626
IG: Physical activity, measured using
an mHealth device, correlations with
psychopathology in participants with
chronic schizophrenia

CG: N/A
FitbitSteps per dayMean daily activity: 12,649.21 ± 5883.99 steps/day.

Range: 3612 – 29,663 steps/day

Significant correlations were found between daily activity and
PANSS positive, general and total subscale.

Activity levels (steps per day)

PANSS-positive; -0.508 (p<0.001)

PANSS-negative; -0.356 (p=0.005)

PANSS-general; -0.39 (p=0.002)

PANSS-total; -0.459 (p<0.001)

PANSS 5-factor positive; -0.495 (p<0.001)

PANSS 5-factor negative; -0.445 (p<0.001)

PANSS 5-factor disorganisation; - 0.362 (p=0.004)
Ström et al.,
201328
IG: Internet based therapist delivered
self-help programme

CG: Waiting list
IPAQTotal MET minutes per weekIPAQ

IG:

   •   Pre: 778 (695)
   •   Post: 1331 (990)
   •   6-months: 1282 (1255)

CG:

   •   Pre: 953 (670)
   •   Post: 1143 (918)
   •   6-months: N/a

Between groups effect size: Cohen’s d = 0.20

Within groups effect size:

   •   IG Cohen’s d = 0.66
   •   CG Cohen’s d = 0.24

Physical activity increased in both groups, no significant
difference between two groups

HAMD; Hamilton Depression Scale, IG; Intervention Group, IPAQ; International Physical Activity Questionnaire, CG; Control Group, METS; Metabolic Equivalent of Task, PA; Physical Activity, PANSS; Positive and Negative Syndrome Scale, YMRS; Young Mania Rating Scale. Data is presented as mean (standard deviation) unless otherwise stated

Four studies used eHealth technologies to measure PA in participants with mental health conditions26,27,31,32. Higher levels of PA as measured using eHealth are associated with less manic symptoms as measured using the Young Mania Rating Scale (YMRS) in participants with bipolar disorder (YMRS: beta=-.37, p<0.001)27. In addition, a decline in PA participation was reported to be predictive of an increase in depressive symptoms. In participants with schizophrenia, daily PA levels as measured by an eHealth device (Fitbit Flex®), showed a moderate association33 with positive (steps per day: -0.508, p<0.001), general (steps per day: -0.39, p=0.002) and total (steps per day: -0.459, p<0.001) scores measured using the Positive and Negative Syndrome Scale (PANSS)26.

eHealth technologies were shown to increase PA participation in participants with depression31. Kerr and colleagues reported daily step count significantly increased from baseline (Mean: 6604.1 (SE: 883.6)) to 12 weeks (Mean: 9053.3 (SE: 818.1)) in 36 participants with depression. In addition, sedentary behaviour reduced from baseline to 12 weeks, however, this did not reach statistical significance (Table 5).

Risk of bias of included studies

Risk of bias of all included studies is noted in Table 4 & Table 5. The Cochrane Collaboration’s tool25 was used to evaluate the risk of bias of the three included RCTs. The Downs and Black checklist assessed the risk of bias of the remaining observational studies (n=4). Individual risk of bias for all of the included studies is included as Supplementary File 3.

Table 4. Cochrane risk of bias assessment of intervention studies.

Risk of Bias DomainGlozier et al., 2013Mailey et al., 2010Ström et al., 2013
Sequence generationLowUnclearLow
Allocation concealmentLowUnclearUnclear
Blinding of participants,
personnel and outcome
assessors
LowUnclearUnclear
Incomplete outcome dataLowLowLow
Selective outcome reportingUnclearUnclearUnclear
Other sources of biasUnclearLowLow

Table 5. Downs and Black risk of bias assessment of observational studies.

AuthorDowns and Black
Risk of Bias
Beiwinkel et al., 20162711/18
Kerr et al., 20083117/20
Naslund et al., 20163219/20
Shin et al., 20162616/17

Discussion

This systematic review comprehensively searched and evaluated the effect of eHealth interventions on PA levels in participants with a range of mental health conditions. Overall, eHealth interventions appear to be beneficial at promoting PA, although consistent increases in PA were not demonstrated across all studies. Importantly perhaps, higher levels of PA were associated with improvements in clinical signs and symptoms of mental health conditions (e.g. mood) in two studies26,27. Although beneficial in increasing PA levels, it is currently unclear if eHealth interventions are superior to traditional care at increasing PA as results are inconsistent. A summary of objectives and best available evidence is shown in Table 6.

Table 6. Summary of best available evidence for review objectives.

ObjectivesBest available evidence
The effectiveness of eHealth technologies as
a stand-alone or component of a multimodal
intervention to promote PA in people with a mental
health condition
Evidence from one high quality RCT22 supports the use of eHealth technology
as part of a multimodal intervention in individuals with psychological distress and
concomitant CVD in increasing the likelihood of achieving PA guidelines for adults
(Odds Ratio 1.91, 95% CI: 1.01–3.61).
The effectiveness of eHealth technologies to
measure PA among people with mental health
conditions
Evidence from three moderate-high quality observational studies reported eHealth
technologies offer a feasible, potentially effective method of measuring PA among
people with mental health conditions.
The effectiveness of eHealth technologies, designed
to monitor PA, on general or mental health profiles
Evidence from one high quality observational study reported that for participants
with schizophrenia, daily PA levels as measured by an eHealth device (Fitbit Flex®),
showed a significant association with positive (steps per day: -0.508, p<0.001),
general (steps per day: -0.39, p=0.002) and total (steps per day: -0.459, p<0.001)
scores measured using the Positive and Negative Syndrome Scale (PANSS).

Glozier and colleagues noted a greater proportion of participants achieved the recommended levels of PA (≥150 mins a week) in favour of the e-health intervention compared to the control group (67% in ICBT vs 61% in control group, Odds Ratio: 1.91, 95% CI: 1.01–3.61). The risk of bias for this study as measured using the Cochrane collaboration tool was relatively low in a number of domains. In contrast, two studies comparing eHealth interventions to control treatments reported no significant differences between the intervention and control arms in terms of PA, however both of these studies were rated as unclear risk of bias in a number of domains28,29. In addition, both of these studies had much smaller sample sizes compared to the study by Glozier and colleagues which was notably much larger in size (n=487) compared to other studies included in this review. It should be noted however that Glozier and colleagues employed a subjective measure of PA, the IPAQ, compared to the more reliable objective measure of PA, the Actigraph accelerometer used by Mailey and colleagues34.

Subjective methods of measuring PA are more prone to error compared to objective measures such as pedometers and accelerometers35. Subjective measures of PA raise the likelihood of self-report bias influencing results as participants are instructed to think about PA. Furthermore, subjective measures are liable to recall bias, further limiting the interpretability of these results. eHealth technologies such as smartphones and wearable technology (i.e. Fitbit) demonstrate good validity and reliability at measuring PA and have been noted to improve patient motivation to partake in PA3638. The use of such tools may limit the influence of bias and other factors associated with subjective measures of PA21.

Experimental studies in this review varied in the type of behavior change theory supporting the eHealth intervention. Glozier and colleagues employed an internet-delivered CBT approach in people with psychological distress and was compared to an online active control group. This online programme, HealthWatch, consisted of 12 weeks of information on topics such as PA and nutrition. In addition, Ström and colleagues performed a similar experimental study comparing internet-delivered CBT compared to a wait-list control group. It was not possible to individually assess or estimate whether it was the method of delivery or behavioural change theory supporting the intervention or a combination of these two elements which resulted in any observed changes.

eHealth technologies are rapid and constantly evolving through continuous software and hardware updates that regularly outpace medical research. The RCT is widely regarded the gold-standard of experimental research, however the mean duration from enrolment to publication is 5.5 years39. eHealth technologies are likely to become obsolete within this time-frame. A call has been made for medical research to evolve and adapt to maintain pace with developments in eHealth40. The Continuous Evaluation of Evolving Behavioural Intervention Technologies (CEEBIT) methodological framework has been proposed as an alternative to the conventional RCT design41. It is statistically powered to continuously evaluate eHealth applications throughout the study duration while accounting for updates to the application. Therefore, future eHealth interventions should consider using this novel methodological framework specific to the ever evolving eHealth technologies.

Further research is required to make a judgement of the ability of eHealth interventions to increase PA in people with mental health conditions. A recent systematic review showed that drop-out rates from exercise trials in people with depression are lower when delivered by a health professional with specific training in exercise prescription42. The need for qualified personnel to supervise PA programmes for people with schizophrenia was also echoed in a review by Vancampfort (2016)43. Drop-out rates of the PA arm of randomised controlled trials in people with schizophrenia was reported to be 26.7%43. Amalgamated drop-out rates for the current review show a lower drop-out rate of 12.5% but this may be reflective of the mixed mental health population with the majority having mild-moderate depression. It is not known whether the remotely delivered nature of eHealth interventions may result in less or more efficacious outcomes than traditionally delivered programmes. Head-to-head comparisons between these intervention mediums are necessary to elucidate the relative benefits of each.

Previous reviews in other clinical populations such as cancer survivors have reported that the initial results of eHealth technologies to increase PA in the cancer rehabilitation setting are promising44. However, similar to this review, weaknesses in methodological quality and uses of subjective measures of PA limit the interpretability of these findings.

Mental health conditions and CVD are inextricably linked as there is a high prevalence of CVD in people with mental health conditions due to a number of behavioural and lifestyle factors that confer increased CVD risk45, and similarly people with CVD have a high prevalence of mental health disorders46. Therefore, evaluation of the ability of eHealth interventions to ameliorate CVD risk is an important consideration, but this was beyond the scope of this review. Future reviews should explore this topic.

Perhaps due to this nascent field of research, the methodological quality of the included studies is low. This review has a number of suggestions to improve the methodological quality of studies examining eHealth interventions and PA participation among mental health populations. Future studies should use objective measures of PA, including but not limited to pedometers, accelerometers and wearable technology. In addition, eHealth interventions should adhere to improved reporting of interventions, to ensure that such interventions can be repeated. Follow-up times in this review have varied from 9 days-12 months, with the majority of studies not recording PA levels in the maintenance phase. Therefore, the long-term implications of eHealth technologies to increase PA in a mental health population should be explored.

Limitations

There are several notable limitations to this review. Firstly, due to the relatively new nature of eHealth technologies to promote PA among people with mental health conditions, the number of studies included was relatively low (n=7). Secondly, six studies were excluded as only abstract proceedings were available. In each case the authors were contacted to ascertain if further information pertaining to these studies could be supplied however, no further data was supplied and these studies were subsequently excluded from this review. Although this significantly reduced the number of articles a lack of a detailed methodology may have increased bias if these studies were included. Thirdly, eligibility criteria in the study by Mailey and colleagues was unclear it was reported that participants with mental health disorders were recruited, however the criteria used to classify mental health disorders was not specified. Therefore, it is unclear the exact type of mental health disorders in this study population. In addition, Glozier and colleagues reported recruiting participants with mild-moderate depression. They used Kessler-10 screening tool to screen for depression, however it is a global measure of distress encompassing questions about both anxiety and depression. A possible further limitation is the distinction we have made between observational and interventional studies, as plausibly, if PA is monitored, this may in itself influence PA behaviour blurring the distinction between these two types of studies. The extent of behavioural change as a result of monitoring PA using eHealth is not known at this time and warrants further investigation. Finally, both observational and interventional studies were included in this review which resulted in strong heterogeneity which precluded the ability to quantitatively analyse results.

Conclusion

eHealth interventions appear beneficial at promoting PA and improving mental health symptoms for people with mental health conditions. Even though some of the included studies in this review demonstrated promising results, methodological restrictions and potential biases from using subjective measures of PA limit the interpretability of these results. Currently, it is unclear if eHealth interventions are superior compared to traditional interventions methods to increase PA. Larger well-designed studies are needed to extensively evaluate the true potential of this medium.

Data availability

All data underlying the results are available as part of the article and no additional source data are required.

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Moran J, Kelly G, Haberlin C et al. The use of eHealth to promote physical activity in people with mental health conditions: a systematic review [version 3; peer review: 3 approved]. HRB Open Res 2018, 1:5 (https://doi.org/10.12688/hrbopenres.12796.3)
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Reviewer Report 09 Jul 2018
Helen P. French, School of Physiotherapy, Royal College of Surgeons in Ireland, Dublin, Ireland 
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The authors have made necessary amendments and as a result the manuscript is easier to follow. I have a couple of minor suggested changes.

In relation to the aims, I suggest that they clarify studies were included ... Continue reading
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French HP. Reviewer Report For: The use of eHealth to promote physical activity in people with mental health conditions: a systematic review [version 3; peer review: 3 approved]. HRB Open Res 2018, 1:5 (https://doi.org/10.21956/hrbopenres.13877.r26284)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.
  • Author Response 12 Jul 2018
    Julie Broderick, Discipline of Physiotherapy, Trinity College Dublin, University of Dublin, Dublin, D08 W9RT, Ireland
    12 Jul 2018
    Author Response
    We would very much like to thank the reviewer for her insightful comments
    Competing Interests: No competing interests were disclosed.
COMMENTS ON THIS REPORT
  • Author Response 12 Jul 2018
    Julie Broderick, Discipline of Physiotherapy, Trinity College Dublin, University of Dublin, Dublin, D08 W9RT, Ireland
    12 Jul 2018
    Author Response
    We would very much like to thank the reviewer for her insightful comments
    Competing Interests: No competing interests were disclosed.
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Reviewer Report 04 Jul 2018
Jennifer M. Ryan, Department of Epidemiology and Public Health Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland;  Department of Clinical Sciences, Brunel University London, Uxbridge, UK 
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I'd like to thank the authors for considering my comments. I believe the amendments made ... Continue reading
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Ryan JM. Reviewer Report For: The use of eHealth to promote physical activity in people with mental health conditions: a systematic review [version 3; peer review: 3 approved]. HRB Open Res 2018, 1:5 (https://doi.org/10.21956/hrbopenres.13877.r26283)
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Reviewer Report 29 Jun 2018
Olive Lennon, School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland 
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I am satisfied that this article has been sufficiently revised to warrant full acceptance. The addition of a best evidence table is a welcome and valuable addition and the authors have considered and responded to all recommendations. The final point in ... Continue reading
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Lennon O. Reviewer Report For: The use of eHealth to promote physical activity in people with mental health conditions: a systematic review [version 3; peer review: 3 approved]. HRB Open Res 2018, 1:5 (https://doi.org/10.21956/hrbopenres.13877.r26282)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.
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Reviewer Report 05 Apr 2018
Helen P. French, School of Physiotherapy, Royal College of Surgeons in Ireland, Dublin, Ireland 
Approved with Reservations
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Thank you for the opportunity to review this review on a topical and relevant issue. The review appears to have been well conducted but there are some flaws which should be addressed. My comments below are designed to enhance the ... Continue reading
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French HP. Reviewer Report For: The use of eHealth to promote physical activity in people with mental health conditions: a systematic review [version 3; peer review: 3 approved]. HRB Open Res 2018, 1:5 (https://doi.org/10.21956/hrbopenres.13856.r26161)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.
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Reviewer Report 15 Mar 2018
Jennifer M. Ryan, Department of Epidemiology and Public Health Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland;  Department of Clinical Sciences, Brunel University London, Uxbridge, UK 
Approved with Reservations
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This systematic review aims to investigate the effectiveness of eHealth to increase physical activity (PA) among individuals with mental health conditions. This review is on an important topic and the authors provide a timely summary of the evidence. 

... Continue reading
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HOW TO CITE THIS REPORT
Ryan JM. Reviewer Report For: The use of eHealth to promote physical activity in people with mental health conditions: a systematic review [version 3; peer review: 3 approved]. HRB Open Res 2018, 1:5 (https://doi.org/10.21956/hrbopenres.13856.r26070)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.
  • Author Response 12 Jul 2018
    Julie Broderick, Discipline of Physiotherapy, Trinity College Dublin, University of Dublin, Dublin, D08 W9RT, Ireland
    12 Jul 2018
    Author Response
    We would like to very much thank the reviewer for her insightful comments
    Competing Interests: No competing interests were disclosed.
COMMENTS ON THIS REPORT
  • Author Response 12 Jul 2018
    Julie Broderick, Discipline of Physiotherapy, Trinity College Dublin, University of Dublin, Dublin, D08 W9RT, Ireland
    12 Jul 2018
    Author Response
    We would like to very much thank the reviewer for her insightful comments
    Competing Interests: No competing interests were disclosed.
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Reviewer Report 08 Mar 2018
Olive Lennon, School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland 
Caitriona Cunningham, School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland 
Approved with Reservations
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This systematic review explores the available evidence to support ehealth technology (utilising internet and mobile technologies) as a stand-alone intervention or as part of a multimodal intervention to increase physical activity in individuals with mental health conditions. The introduction addresses ... Continue reading
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CITE
HOW TO CITE THIS REPORT
Lennon O and Cunningham C. Reviewer Report For: The use of eHealth to promote physical activity in people with mental health conditions: a systematic review [version 3; peer review: 3 approved]. HRB Open Res 2018, 1:5 (https://doi.org/10.21956/hrbopenres.13856.r26071)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.
  • Author Response 12 Jul 2018
    Julie Broderick, Discipline of Physiotherapy, Trinity College Dublin, University of Dublin, Dublin, D08 W9RT, Ireland
    12 Jul 2018
    Author Response
    We would very much like to thank the reviewers for their insightful comments
    Competing Interests: No competing interests were disclosed.
COMMENTS ON THIS REPORT
  • Author Response 12 Jul 2018
    Julie Broderick, Discipline of Physiotherapy, Trinity College Dublin, University of Dublin, Dublin, D08 W9RT, Ireland
    12 Jul 2018
    Author Response
    We would very much like to thank the reviewers for their insightful comments
    Competing Interests: No competing interests were disclosed.

Comments on this article Comments (0)

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Alongside their report, reviewers assign a status to the article:
Approved - the paper is scientifically sound in its current form and only minor, if any, improvements are suggested
Approved with reservations - A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit.
Not approved - fundamental flaws in the paper seriously undermine the findings and conclusions

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