Adherence to Different Exercise Interventions

Study Overview
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Brief Summary
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Only 50% of sedentary adults that start an exercise training program adhere to the program after 6 months. Exercise variety may improve adherence. The goal of this study is to examine different exercise interventions that include a variety of exercise on adherence.

Detailed Description
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Regular exercise, in the form of walking 150 minutes per week, is widely regarded as having many health and fitness benefits. Despite these well-known benefits, adherence to exercise interventions is extremely low. When sedentary adults start an exercise training program only 50% adhere to the program and meet the national recommendations of 150 minutes per week. A possible explanation of the low adherence is that most adults only walk for exercise, and that providing a variety of exercise may increase adherence. Preliminary observational data show that a variety of exercise may increase weekly exercise expenditure compared to other interventions. The overall objective of this study is to investigate the feasibility, adherence, and acceptability of different exercise interventions including 1) walk intervention, 2) variety intervention, and 3) progressive intervention (see below for description).

Official Title
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Aherence to Different Exercise Interventions

Conditions
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Exercise Adherence

Intervention / Treatment
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* Behavioral: Walking
* Behavioral: Variety
* Behavioral: Progressive


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 18-40 years old Sedentary (<1 hour per week of exercise) BMI 18.5 to 40 kg/m2 Exclusion Criteria: Adults with diagnosed cardiovascular, diabetes, renal, or any other metabolic disease determined by Health and Fitness History questionnaire. Any other disability, ailment, or physical characteristics that may hinder the ability to participate in regular exercise determined by Health and Fitness History questionnaire. Participating in other studies that would interfere with their ability to safely complete the exercise protocols. Pregnant or trying to become pregnant, and peri-menopausal or post-menopausal women. History of smoking within the last 6 months Any other vulnerable population (children <18, pregnant women, prisoners, etc.)

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Randomized study to three arms: 1) walk intervention, 2) variety intervention, 3) progressive intervention
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Walking<br>Participants prescribed 150 minutes/week of moderate to vigorous walking. | Behavioral: Walking<br>* Prescribed 150 minutes per week of moderate to vigorous walking.<br>|
| Experimental: Variety<br>Participants prescribed 150 minutes/week of moderate to vigorous variety of exercise. Each week participants will be prescribed a single different exercise (variety) which will include cycling, walking/jogging, yoga/Pilates, and cross-training. | Behavioral: Variety<br>* Prescribed 150 minutes per week of moderate to vigorous variety of exercise. Each week participants are randomly asked to participate in cycling, walking/jogging, yoga/Pilates, or cross-training.<br>|
| Experimental: Progressive<br>Participants prescribed 150 minutes/week of moderate to vigorous exercise. The exercises include cycling, walking/jogging, yoga/Pilates, and cross-training, and each week another exercise will be added to the list of options for participants. Participants may choose from the list of exercise. They do not have to do them all, and they can do as much or little (none) of whatever they choose. | Behavioral: Progressive<br>* Prescribed 150 minutes per week of moderate to vigorous progressive variety of exercise. Each week participants are randomly asked to participate in cycling, walking/jogging, yoga/Pilates, or cross-training. Participants can choose which exercise they want to do, and can do as much or little as they want.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Adherence to exercise intervention | Adherence is assessed as meeting or exceeding 150 minutes per week of moderate to vigorous exercise | Change from baseline at 1-week, 2-weeks, 3-weeks, and 4-weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Acceptability of intervention | Participants will complete a survey on acceptability at the end of the exercise intervention | Acceptability at 4-weeks | 
| Body Weight | Body weight will be measured at baseline and 4-weeks | Change in body weight from baseline to 4-weeks |