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CompletedNCT02948803Updated Aug 21, 2017

A Smartphone-based Intervention to Promote an Active Lifestyle in Low Educated Working Young Adults

An interventional study of smartphone based intervention with Active Coach app in Physical Activity, sponsored by University Ghent. Completed at 1 site in Belgium. Open to participants aged 18 Years to 28 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-08-21.

Sponsored by University Ghent · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
130
Allocation
Randomized
Ages
18 Years to 28 Years
Sex
All
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Study summary

The aim of this smartphone-based intervention study is to determine whether a newly developed app is effective in promoting an active lifestyle in low educated working young adults.

Read the detailed description

A stepwise approach was used to develop a new native Android smartphone app (Active Coach). This app aims to promote an active lifestyle (through physical activity and active transport) in low educated working young adults. The development of this app is based on theory, evidence and user's experiences. The app focuses on four determinants (knowledge, attitude (perceived benefits and perceived barriers), social support and self-efficacy) and includes several behavioral change techniques (self-monitoring, goal-setting, feedback on behavior, review behavior goals, instruction on how to perform the behavior, information about health consequences, enhancing network linkages and prompts/cues). Furthermore, the app works in combinations with a wearable activity tracker (Fitbit Charge) to track users activity behavior.

For the smartphone-based intervention, 120 low educated working young adults are being recruited via purposeful convenience sampling though companies and employers. Participants can not have any medical conditions that prevent them from being physically active and they need to own an Android smartphone. Fitbit Charge activity trackers will be provided. The participants will be randomly divided in the intervention group or the standard information control group. The intervention period will be nine weeks. At the beginning and the end of the intervention period, physical activity levels will be objectively measured with accelerometers. Follow-up measurements will be conducted 12 weeks after the end of the intervention period.

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Conditions studied

  • Physical Activity

Keywords

  • intervention
  • mHealth
  • physical activity
  • active transport
  • smartphone
  • application
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In context

Lead sponsor

University Ghent is the lead sponsor of 345 studies on the registry; 85 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 28 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • between 18 and 28 years old
  • low educated (maximum secondary school, no higher education (university or college)
  • employed
  • dutch speaking
  • owning an Android smartphone

Exclusion criteria

Exclusion Criteria:

  • being very physically active (already reaching the recommended 30 minutes of physical activity a day)
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Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
130 participants (actual)

Study arms

  • Experimental
    Intervention group

    smartphone based intervention with Active Coach app: participants in the intervention group will use a newly developed smartphone app in combination with a Fitbit Charge activity tracker for 9 weeks. The app aims to promote an active lifestyle.

    Behavioral: smartphone based intervention with Active Coach app

  • No intervention
    control group

    participants in the control groups only receive a flyer with standard information about an active lifestyle

Interventions

  • Behavioralsmartphone based intervention with Active Coach app
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What researchers measure

Primary outcomes

  1. change in physical activity: objective

    physical activity will be objectively measured by accelerometers (Actigraph)

    Time frame: The outcome will be measured at baseline (before start intervention), posttest (9 weeks after the start of the intervention) and follow-up (12 weeks after the posttest)

  2. change in physical activity: self-reported

    physical activity will be measured via the International Physical Activity Questionnaire (IPAQ, long version)

    Time frame: The outcome will be measured at baseline (before start intervention), posttest (9 weeks after the start of the intervention) and follow-up (12 weeks after the posttest)

Secondary outcomes

  1. Change in perceived benefits towards physical activity and active transport

    benefits will be measured via fifteen items with a five-point answer format

    Time frame: The outcome will be measured at baseline (before start intervention), posttest (9 weeks after the start of the intervention) and follow-up (12 weeks after the posttest)

  2. Change in perceived barriers towards physical activity and active transport

    barriers will be measured via fifteen items with a five-point answer format

    Time frame: The outcome will be measured at baseline (before start intervention), posttest (9 weeks after the start of the intervention) and follow-up (12 weeks after the posttest)

  3. Change in social support towards physical activity and active transport

    social support will be measured via nine items with a five-point answer format

    Time frame: The outcome will be measured at baseline (before start intervention), posttest (9 weeks after the start of the intervention) and follow-up (12 weeks after the posttest)

  4. Change in self-efficacy towards physical activity and active transport

    self-efficacy will be measured via eight items with a five-point answer format

    Time frame: The outcome will be measured at baseline (before start intervention), posttest (9 weeks after the start of the intervention) and follow-up (12 weeks after the posttest)

  5. Change in knowledge towards physical activity and active transport

    knowledge will be measured via one item with a six-point answer format

    Time frame: The outcome will be measured at baseline (before start intervention), posttest (9 weeks after the start of the intervention) and follow-up (12 weeks after the posttest)

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Study locations

1 site
  • Ghent University
    Ghent, 9000, Belgium
08

References and documents

Publications

  • Simons D, De Bourdeaudhuij I, Clarys P, De Cocker K, Vandelanotte C, Deforche B. Effect and Process Evaluation of a Smartphone App to Promote an Active Lifestyle in Lower Educated Working Young Adults: Cluster Randomized Controlled Trial. JMIR Mhealth Uhealth. 2018 Aug 24;6(8):e10003. doi: 10.2196/10003. PubMed 30143477 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 21, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02948803
Lead sponsor
University Ghent
Collaborators
Fund for Scientific Research, Flanders, Belgium
Responsible party
Sponsor
First posted
Oct 28, 2016
Start date
Sep 12, 2016
Primary completion
Feb 17, 2017
Completion
Feb 17, 2017
Last update
Aug 21, 2017

Study contacts

Dorien Simons
principal investigator · University Ghent
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2017. You cannot join it, but the record below documents what was studied.

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