An interventional study of mHealth in Exercise Training, sponsored by University of British Columbia. Status unknown at 1 site in Canada. Open to participants aged 13 Years to 16 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-05-10.
Sponsored by University of British Columbia · Not applicable, Interventional, and Basic science
The researchers are investigating whether adding mobile technology to a home-based exercise counselling program makes it easier for youth to begin and maintain regular exercise. Participants who joins the study will receive exercise counselling from an exercise specialist, but half of all participants will receive mobile technology - a fitness watch - that links to a mobile phone App. The mobile App allows the exercise specialist to provide personalized feedback throughout the program via the fitness watch. The investigators are interested to know whether the fitness watch and mobile App will make it easier for youth to achieve their exercise goals. Both groups will be compared to an active control group, who will receive no exercise program.
Purpose:
The investigators aim to undertake an experimental trial using exercise training in adolescents, evaluating a theoretical model where mHealth technology, allowing biometric informed feedback and coaching, is incorporated into a structured home-based exercise and physical activity (PA) intervention. The overall objective is to have an evidence-based exercise and PA intervention ready to evaluate in a future randomised controlled trial (RCT).
Hypothesis:
It is hypothesized that this approach will increase both habitual PA and adherence to structured exercise of the appropriate intensity to promote improvements in cardiorespiratory fitness and vascular function.
Justification:
Current physical activity guidelines suggest adolescents should accumulate at least 60 minutes of moderate to vigorous physical activity (MVPA) per day. Yet globally, more than 80% of adolescents fail to achieve the recommended level of daily MVPA, and less than 25% of Canadian adolescents are sufficiently physically active. Adolescence is a time when sedentary habits predominantly manifest. Sedentary time increases by approximately 100 minutes/day between the ages 12 and 16 years, and there is a disproportionate number of inactive adolescent girls (82%) compared to boys (71%). Clearly current strategies to encourage appropriate levels of physical activity in adolescence are inadequate.
It is important to note that the current MVPA guidelines lack the intensity associated with the enhancement of cardiorespiratory fitness in youth (\~85-90% of heart rate maximum).Further, the extant data show that habitual physical activity is not related, or at best weakly related to direct laboratory measures of cardiorespiratory fitness in youth.
If we aspire to improve cardiorespiratory or vascular health in our younger population, we need to find ways to engage adolescents in sufficient exercise i.e., 40-60 minutes, 3 to 4 times per week at \~85-90% of heart rate maximum.
Objectives:
Primary Objective
1) Determine the number of sedentary adolescents that are eligible to participate, the proportion of these who would be willing to take part in this trial, and their characteristics, and the number of participants retained at 6-months.
Secondary Objectives
Research Design:
The study is a randomised controlled intervention, whereby participants will complete pre-randomisation baseline testing (T1) before a 3-month supported PA and exercise intervention is completed. Immediately post-intervention (T2) and 6-months after the intervention is completed
Statistical Analysis:
The proportion of eligible patients who consent to participate in the pilot will be presented, along with the proportions in each intervention group completing each follow up assessment and the reasons for withdrawal. Descriptive characteristics and outcome data will be summarized overall and by intervention group, as mean (standard deviation) for normally distributed continuous variables, median (interquartile range) for non-normally distributed continuous variables, and number (percentage) for categorical variables.
Interview data will be analysed using thematic analysis, which will allow the research team to discuss emerging themes and help the research team to explore the barriers and facilitators to the intervention and refine the theoretical model, assessing which elements of the intervention. are most effective for participants. As this is a pilot study there will be no formal comparisons between groups in the intervention.
University of British Columbia is the lead sponsor of 1,335 studies on the registry; 256 are open to participants now.
Of its 6 completed or terminated interventional studies of FDA-regulated products, 1 (17%) have results posted.
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Exclusion Criteria:
Participants will undertake a 3-month structured exercise and PA intervention, supported by an exercise specialist. Participants will have 5 exercise consultations. Participants will receive a personalised progressive exercise programme. The aim will be to increase exercise intensity and duration during the first 3-months; aiming to meet the aerobic training guidelines of 3-4 sessions of at least 40 minutes at 85-90% heart rate maximum or of vigorous intensity. During follow-up, the aim will be to at least maintain this level of exercise. Participants will receive 1) a wrist worn fitness watch (Polar Ignite), featuring a 3d accelerometer and optical heart rate monitor, and 2) a smartphone app for participants (Polar Flow - Sync \& Analyse). These will be synced, allowing data to be transferred to the exercise specialist, who will created monitor pre-set exercise sessions.
Behavioral: mHealth
Participants will undertake the same 3-month structured exercise and PA intervention, supported by an exercise specialist, but without the use of mHealth technology to support the prescription and adherence to the exercise. Participants will be monitored using a wrist worn fitness watch, but will not receive feedback or have pre-set exercise sessions through the mHealth technology
Behavioral: mHealth
Participants will receive no exercise or PA intervention. Participants will continue with regular PA behaviours as an active control comparator. Participants in the control group will be monitored at the start and the end of the 3 months intervention period (2 weeks) to determine habitual PA and exercise levels
A 3-month structured exercise and PA intervention, supported by an exercise specialist, with a 3-month follow-up
Also known as: Exercise Counselling
Eligibility to participate in the intervention
1. The number of adolescents approached and reasons for not joining the study 2. Number of participants approached to participate, percentage attending/ dropout throughout the intervention
Time frame: Baseline, and follow up at weeks 4,8,12
Enrolment in the intervention
Percentage of adolescents attending at 3-month post and 6-month follow up and reasons for drop-out.
Time frame: Baseline, week 12
Adherence
Adherence to the exercise training. Assessed as the number of prescribed sessions completed (as a percentage), and as the percentage of each exercise session spent in desired heart rate zones (80-95% heart rate max).
Time frame: 12 weeks
Precision of potential outcome measures of cardiorespiratory fitness
Estimate precision of potential outcome measures required for sample size estimations for the definitive RCT. Maximal oxygen uptake will be assessed on an bike ergometer ramp incremental test to exhaustion. This will be compared from pre compared to post intervention
Time frame: Baseline, week 12, week 24
Precision of potential outcome measures of peripheral vascular function
Estimate precision of potential outcome measures required for sample size estimations for the definitive RCT. This is assessed using ultrasound to assess peripheral endothelial function of the brachial artery at baseline compared to post intervention and follow up assessment.
Time frame: Baseline, week 12, week 24
Precision of potential outcome measures of cerebrovascular function
Cerebrovascular function will be assessed using ultrasound of the internal carotid artery and vertebral artery for measures of blood flow and shear rate. This will be compared from baseline to post intervention.
Time frame: Baseline, week 12, week 24
Acceptability of the exercise training program
This will be assessed using validated PACES 5-point likert scales for enjoyment of exercise sessions, self efficacy, positive and negative affect and perceived behavioural control. These will be assessed on a 5 point scale from 1-5 of participants subjective feelings throughout the intervention, and compared to participants between different arms of the intervention
Time frame: baseline, week 6 and week 12
Plan to share: No — The data collected will be kept by Dr McManus and Dr Koep and written up for publication
Start is estimated for Jun 2024; primary completion for Aug 2025, 14 months later.
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This study is status unknown, as verified in May 2024. You cannot join it, but the record below documents what was studied.
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