REHIT Versus SMIT in Sedentary Young Women

Study Overview
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Brief Summary
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Reduced-exertion high-intensity training (REHIT) is a novel form of exercise known for being non-classical, time-efficient, and effective on different populations. However, REHIT was scarcely tested on sedentary women with mortality risks. The aim of the study is to compare the effects of REHIT versus short moderate-intensity training (SMIT) on functional capacity, resting heart rate (RHR), and activity enjoyment in sedentary young women.

Detailed Description
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The aim of the study is to compare the effects of reduced-exertion high-intensity training (REHIT) versus short moderate-intensity training (SMIT) on functional capacity, resting heart rate (RHR), and activity enjoyment in sedentary young women. Therefore, sedentary young women will be randomly allocated to either a: i) REHIT group or ii) SMIT group. Both groups will perform an intervention over 6 weeks duration for 10 minutes each session for 2 sessions/week, but with different intensities (REHIT or SMIT). Both forms of exercise will be conducted on a cycle ergometer with the subjects monitored throughout the intervention. Before and after the 3-week intervention, functional capacity (6-minute walking test) and RHR will be measured. Additionally, physical activity enjoyment (Physical Activity Enjoyment Scale) will be assessed after the intervention.

Official Title
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Effects of Reduced-exertion High-intensity Training Versus Short Moderate Intensity Training on Functional Capacity and Physical Activity Enjoyment in Sedentary Young Women A Randomized Trial

Conditions
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Sedentary Behavior

Intervention / Treatment
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* Other: Reduced-exertion high intensity training
* Other: Short moderate intensity training


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Women. Age between 18 and 25 years old. Those who score a low physical activity level (< 600 METS min/week) in the International Physical Activity Questionnaire-short form. Exclusion Criteria: Women who suffer from musculoskeletal. Women who suffer from neurological diseases. Those who are taking medications.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 25 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

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
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Reduced-exertion high intensity training group<br>The REHIT part will consist of maximum cycling sprints of all-out exercise at 100% of the HRmax, increasing for up to 10 seconds, 15 seconds on week two and 20 seconds on week three. | Other: Reduced-exertion high intensity training<br>* The intervention of the REHIT group will consist of three parts: i) 3 minutes of warm-up part at 50% of HRmax obtained in the effort test; ii) 3 min 20 sec to 3 min 40 sec of REHIT; and iii) 3 minutes of cool-down at 50% of HRmax obtained in the effort test. The REHIT part will consist of maximum cycling sprints of all-out exercise at 100% of the HRmax, increasing for up to 10 seconds, 15 seconds on week two and 20 seconds on week three. Then, 3 minutes of active rest at 50% of HRmax. Finally, 10 seconds of all-out exercise at 100% of the HRmax, rising to 15 seconds on week two and 20 seconds on week three.<br>|
| Active Comparator: Short moderate intensity training group<br>The SMIT part of the session will consist of 6 minutes of moderate intensity exercise at 60-70% HRmax. | Other: Short moderate intensity training<br>* The SMIT group will receive a short moderate-intensity training with the same warm-up and cool-down exercises as the REHIT group. In addition, the main part of the session consisted of 6 minutes of moderate intensity exercise at 60-70% HRmax obtained in the effort test. In addition, the main part of the session increases 3 min every week as 6 min for the first 2 weeks, 9 min for the 3rd and 4th weeks, and 12 min for the last two weeks.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Functional capacity | It will be measured using the 6-minutes walking test (6MWT). Participants will be instructed to walk as quickly as possible along a 30-meter hallway for a duration of six minutes without running. Then, the distance in meters they cover will be registered. The greater the number of meters run, the better the functional capacity. | Baseline | 
| Functional capacity | It will be measured using the 6-minutes walking test (6MWT). Participants will be instructed to walk as quickly as possible along a 30-meter hallway for a duration of six minutes without running. Then, the distance in meters they cover will be registered. The greater the number of meters run, the better the functional capacity. | After the intervention (3 weeks) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Resting heart rate | It will be measured with a patient monitor (ProAct PC-3000 Patient Monitor, Medisave, UK). | Baseline | 
| Resting heart rate | It will be measured with a patient monitor (ProAct PC-3000 Patient Monitor, Medisave, UK). | After the intervention (3 weeks) | 
| Physical activity enjoyment | To assess enjoyment, a modified version of the Physical Activity Enjoyment Scale (PACES) will be used. In this questionnaire, 17 items are scored on a 7-point bipolar scale, with an overall enjoyment score ranging from 17 (not enjoyable) to 68 (neutral) and 119 (enjoyable). | Baseline | 
| Physical activity enjoyment | To assess enjoyment, a modified version of the Physical Activity Enjoyment Scale (PACES) will be used. In this questionnaire, 17 items are scored on a 7-point bipolar scale, with an overall enjoyment score ranging from 17 (not enjoyable) to 68 (neutral) and 119 (enjoyable). | After the intervention (3 weeks) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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High-intensity training, Moderate intensity training, Sedentary young women