ClinicalTrials.gg
CompletedNCT03445325Updated Jun 27, 2022

Pre/Post Evaluation of Living Green and Healthy for Teens (LiGHT)

An interventional study of LiGHT v2.1 in Obesity, Pediatric, sponsored by University of British Columbia. Completed at 1 site in Canada. Open to participants aged 13 Years to 17 Years. Per ClinicalTrials.gov, last updated 2022-06-27.

Sponsored by University of British Columbia · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
500
Allocation
Not applicable
Ages
13 Years to 17 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 51 studies in Pediatric Obesity with a site in Canada — 7 open to participants now, 9 under way, 1 of them phase 3. Pediatric Obesity · Canada.

Enrollment
7th of 40
500 · median 73
Started
2018
with 4 others
No phase
37 of 51
6 open now
Registered
26th of 51
by date
Lead sponsor
3 of 51
University of British Columbia

Among the 51 studies in Pediatric Obesity with a site in Canada, this one is the 7th largest by enrollment of the 40 interventional ones that give a count, is one of 5 that started in 2018, is one of 37 with no phase, and was the 26th registered.

Pediatric Obesity

1,129 studies on the registry are indexed under Pediatric Obesity; 187 are open to participants now.

Browse Pediatric Obesity studies →

Open to participants now

7 of the 51 studies in Pediatric Obesity with a site in Canada are open now. Recruiting first, the newest first:

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All 7 open studies →

A study can be open while its sites in Canada have not opened yet or have stopped. Only those recruiting at a site in Canada →

Who these studies take

Of the 124 Pediatric Obesity studies recruiting now, 19 (15%) set no upper age limit and 103 (83%) stop at 75 or younger; 114 take children under 18; 69 take healthy volunteers.

This study: 13 Years to 17 Years · all sexes · no healthy volunteers.

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02

Study summary

This study is the first of three sub-studies aimed at evaluating the outcomes of Living Green, Healthy for Teens (LiGHT v2.1), an app for 13 to 17 year -olds and their families that is intended to help them shift from an unhealthy lifestyle toward better health habits in three areas: physical activity, nutrition and sedentary behaviours. This first evaluation has the following aims to: 1) describe reach; 2) determine utilization/adherence to strategies implemented in the app and predictors of utilization/adherence; 3) assess change in knowledge and lifestyles behaviours associated with obesity as well as assess mediators of behaviour change. As this is a formative evaluation, it will prospectively follow 500 families for 4.5 months.

Read the detailed description

Living Green, Healthy for Teens (LiGHT v2) is an engaging online, individualized, gamified lifestyle management program for youth focused on initiating long-term behaviour-change in youth and their families in order to help them shift from an unhealthy lifestyle toward better health habits in three areas: physical activity, nutrition and sedentary behaviour. The program aims both to treat and prevent childhood obesity, as well as to mitigate increased risk for metabolic and non-metabolic complications associated with obesity in the short and long-term.

Because parents have been shown to be of primary importance in treating childhood obesity, LiGHT v2 will educate and engage parents as well as youth. Parents will receive separate but complementary content, intended to guide them as they shop for and prepare food and make behavioural changes within their families. The content for parents will be delivered using the same social software that facilitates peer-to-peer conversations with teen users (forums), but the channels will be gated, so teens and parents each have their own space. LiGHT v2's social features will help parents strategize and empathize with other families facing similar challenges.

The program will be evaluated using three separate study groups. This protocol describes the first of the three.

A sample of 1400 families (one parent and one child) recruited by an online web panel will be screened for eligibility (i.e., children aged 13-17 and their parents). Of these, it is expected that approximately 500 will meet our eligibility criteria and express an interest in enrolling in the study, and of these, about 50% will actually enroll in the study. This evaluation will use a prospective design that integrates pre- and post-evaluations. All families will be given access to LiGHT v2.1 to use from their home computer and prospectively followed for 4.5 months.

Parents will complete questionnaires at baseline and after 4.5 months, which assess behaviours, sociodemographics, mediators of behaviour change, and satisfaction with the app. Teens will complete questionnaires at baseline, and after 1 and 4.5 months, which assess behaviours, satisfaction with the app, mediators of behaviour change, and knowledge for recommendations for healthy behaviours.

Parent/child usage will also be monitored using web-analytic tools in order to understand how users interact with LiGHT.

03

Conditions studied

  • Obesity, Pediatric

Keywords

  • obesity
  • physical activity
  • nutrition
  • adolescents
  • gamification
  • sedentary activity
04

Who can participate

Ages eligible
13 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Youth participants must be between the ages of 13 and 17
  • Youth participants and at least one of their parents must be literate in English
  • Youth participants and at least one of their parents must be able to read at the grade 5 level or above
  • Parent participants must have primary custody of the child participant
  • Families must have a computer or mobile device and internet access at home

Exclusion criteria

Exclusion Criteria:

  • Youth participants must not have any health condition that restricts the amount or type of activity the participant can do
  • Youth participants must not have any health condition that severely restricts the types of food the participant can eat
  • Youth participants must not have a diagnosis of type I diabetes
  • Youth participants must not have any reason (including cognitive, psychological, or physical limitations) that preclude them from being able to spend 20-30 minutes using a computer program that is written at a 5th grade reading level
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
500 participants (actual)

Study arms

  • Experimental
    LiGHT v2.1

    Participants will be assigned the intervention (use of the parent or teen app for 4.5 months) and asked to use throughout the intervention period (all participants are assigned to the intervention arm and results will be analyzed pre- and post-intervention).

    Behavioral: LiGHT v2.1

Interventions

  • BehavioralLiGHT v2.1

    The LiGHT mobile program strives to support youth and their families to adopt lifelong healthy behaviours in four areas - eating, physical activity, recreational screen time and sleep - to foster healthy growth and development, to prevent chronic diseases and manage unhealthy weights. The program includes content that involve the family, and focus on behavioural therapy as well as dietary and physical activity patterns. LiGHT is intended to be engaging and fun, provide virtual and tangible rewards, and interact with participants multiple times per day. In addition, it will feature a mobile social support network and interaction with a live coach with specialized training in motivational interviewing to support youth/families in changing their health behaviours through messaging and phone calls.

06

What researchers measure

Primary outcomes

  1. Reach

    Survey questions will assess socio-demographic characteristics of families and will be compared against those who were invited to participate in the study (from a web-based panel) and families who typically register for weight-management centres in Canada.

    Time frame: Baseline

  2. Adherence

    Web-analytic tools will track utilization of LiGHT components and all interactions with the program. Adherence will be calculated as cumulative number of feature-specific interactions per week (e.g., number of interactions with articles, number of interactions with social wall, etc.).

    Time frame: Ongoing for 4.5 months

  3. Change in health behaviour knowledge

    Survey questions (using a LiGHT-specific tool) will assess teens' knowledge of Canadian recommendations for healthy eating, physical activity, and sedentary behaviours. Knowledge will be reported as an aggregate knowledge score from 0 to 13 (a score of 0 indicates low knowledge and a score of 13 indicates high knowledge), as well as sub-score for each of the knowledge area (healthy eating, physical activity, and sedentary behaviours).

    Time frame: Baseline and 4.5 months

  4. Change in physical activity behavior (teens)

    Survey questions will assess teens' physical activity behaviours, and change in physical activity will be computed based on a composite physical activity score. Teen physical activity will be assessed using a modified version of the Physical Activity Questionnaire for Children (PAC-Q), and scored as average minutes per day of moderate-vigorous physical activity.

    Time frame: Baseline and 4.5 months

  5. Change in physical activity behavior (parents)

    Survey questions will assess parents' physical activity behaviours, and change in physical activity will be computed based on a composite physical activity score. Parent physical activity will be assessed using a modified version of the International Physical Activity Questionnaire Short Form (IPAQ-SF), and scored as average minutes per day of moderate-vigorous physical activity.

    Time frame: Baseline and 4.5 months

  6. Change in sedentary behaviour

    Survey questions will assess teens' and parents' recreational screen time use (using the Take Action survey), and will be reported as the number of self-reported hours of recreational screen time per day.

    Time frame: Baseline and 4.5 months

  7. Change in dietary behaviour

    Survey questions will assess teens' and parents' dietary behaviours, and be reported as average number of fruits and vegetables and sugar-sweetened beverages per day.

    Time frame: Baseline and 4.5 months

Secondary outcomes

  1. Change in mediators of behaviour change

    Survey questions will assess teens' self-efficacy and motivation in changing the health behaviours targeted by LiGHT

    Time frame: Baseline, 1 month, and 4.5 months

Other outcomes

  1. Functionality

    Monthly satisfaction surveys will assess whether users like the program (e.g. was LiGHT fun, easy to use and intuitive, did it offer content to which they could relate and features they like) and whether they have suggestions for improvement

    Time frame: 4.5 months

07

Study locations

1 site
  • BC Children's Hospital Research Institute
    Vancouver, British Columbia V6H 3V4, Canada
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Mar 2018 to primary completion in Nov 2018, 8 months.

Of 539 non-industry interventional studies with no phase under Pediatric Obesity, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 45. This study's 8 months is below that.

Counting every sponsor, half of 541 studies reached it within 25 months; a quarter within 11 and three quarters within 45.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 6, 2018
First posted
Feb 26, 2018
StartActual
Mar 1, 2018
Primary completionActual
Nov 30, 2018
CompletionActual
Dec 23, 2019
Last update
Jun 27, 2022
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 27, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03445325
Collaborators
Childhood Obesity Foundation, Ayogo Health Inc., Public Health Agency of Canada (PHAC), Merck Canada Inc., Pacific Blue Cross, Heart and Stroke Foundation of Canada
Responsible party
Louise Masse (Professor, University of British Columbia) — Principal investigator
First posted
Feb 26, 2018
Start date
Mar 1, 2018
Primary completion
Nov 30, 2018
Completion
Dec 23, 2019
Last update
Jun 27, 2022

Study contacts

Louise C Masse, PhD
principal investigator · University of British Columbia School of Population and Public Health

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2022. You cannot join it, but the record below documents what was studied.

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