A Comparison Between Two Repetition Prescription Approaches in Resistance Training Delivered Via Videoconferencing to Untrained Young Adults
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 58
- 试验地点
- 2
- 主要终点
- Change from baseline enjoyment score
研究概览
简要总结
A randomized controlled trial comparing between two approaches of prescribing repetition-numbers in resistance training (RT) sessions on psychological, physiological, and performance outcomes. Sixty healthy and sedentary adults (age range: 18-45) will be randomly allocated to either the "predetermined" or "self-selected" groups. The groups will differ in the amount of choice they will be able to make concerning the resistance of each exercise and the number of repetitions they complete (see detailed description). Both groups will complete two sessions per week composed of body weight and resistance band exercises, lasting 45 minutes for eight weeks. The sessions will be delivered live by a certified instructor using a videoconferencing platform.
The primary aim of this study is:
Compare between the "predetermined" and the "self-selected" repetition prescription approaches on psychological, physiological, and performance outcomes in a cohort of 60 healthy and sedentary adults (age range: 18-45) over an eight-week period of live, videoconferencing RT sessions.
The secondary aim is:
Determine the influence of live, videoconferencing group RT sessions on psychological, physiological, and performance outcomes across groups.
详细描述
Background:
Providing trainees with more choices in exercise sessions is an autonomy supportive process which can lead to a more enjoyable experience, greater adherence to the training program and preferable performance outcomes. We will compare between two approaches to prescribing repetition-numbers in resistance training sessions- the "predetermined" and the "self-selected", based on the amount of choice trainees receive while training. Sixty healthy and sedentary adults (age range: 18-45) will train bi-weekly for 45 minutes using resistance bands in a live, videoconferencing group setting.
Intervention details:
The intervention will last eight weeks and include bi-weekly, 45-minute online sessions instructed by two alternating experienced instructors. Each session will include an introduction and setup (5-minutes), warm-up (5-minutes), body-weight and resistance band exercises (30-minutes) and cool down (5-minutes). We will upload the study protocol to an external server for more details.
Both groups will follow the exact same exercise program with one key difference: participants in the "predetermined" group will be instructed to complete 10 repetitions per set and exercise, while aiming to reach a rating of perceived exertion (RPE) of 7/10 by the 10th repetition. This means that participants will need to select and adjust the resistance of each exercise (e.g., band's resistance) to achieve this goal. Conversely, in the "self-selected" group, participants will choose the initial resistance in view of their preferences, and complete as many repetitions as they wish in order to reach the same target RPE of 7/10. Note that while the initial resistance, and thus, the number of repetitions is expected to differ between group, both are matched for perception of effort.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Participant)
盲法说明
Participants will be blinded to allocation
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Non-active (characterized by 60 minutes or less per week of formal exercise sessions)
- •Ages of 18-45
- •Did not participate in RT in the past six months.
- •Participants will be asked to fill out a health questionnaire. If they marked any of the items on the health questionnaire as positive (e.g., diabetes) they were asked to provide a medical clearance from a doctor.
- •Signing a health declaration to participate in physical activity according to the government regulations
排除标准
- •Orthopedic or neurological conditions
- •Diagnosis of co-morbidities
- •Routine use of prescription medication
- •Pregnancy
- •Less than six months after childbirth
结局指标
主要结局
Change from baseline enjoyment score
时间窗: Change from week two to week four, week six and the end of the program on week eight.
Participants will respond to a bi-monthly survey introducing the question: "how much did you enjoy the previous four sessions?" using a visual analog scale (VAS) ranging from (-100) (i.e., did not enjoy it at all) to 100 (i.e., enjoyed it very much). First, the change in scores from one time point the previous one will be calculated, resulting in three change scores across the duration of the study (e.g., week 4 minus week 2, week 6 minus week 4, etc.). Then, the three change scores will be averaged per group and compared between groups as the main outcome.
次要结局
- Change in fat free mass (FFM)(Change from baseline to the end of intervention at eight weeks.)
- Change in response to the ease of use of the rating of perceived exertion (RPE) scale:(Change from week two to week four, week six and the end of the program on week eight.)
- Change in the satisfaction with technology:(Change from week two to week four, week six and the end of the program on week eight.)
- Change in lower-body explosive power:(Change from baseline to the end of intervention at eight weeks.)
- Adherence proportion(Through study completion, a period of eight weeks.)
- Change in body mass index (BMI)(Change from baseline to the end of intervention at eight weeks.)
- Change in maximal strength:(Change from baseline to the end of intervention at eight weeks.)
- Change in knee-extensor strength:(Change from baseline to the end of intervention at eight weeks.)
- Change in upper body endurance:(Change from baseline to the end of intervention at eight weeks.)
- Change in perception of autonomy:(Change from week two to week four, week six and the end of the program on week eight.)
- Change in Basic Regulation to Exercise Questionnaire (BREQ-3) score:(Change from baseline to the end of the intervention (up to seven days from the end of week eight).)
- Change in hand-grip strength:(Change from baseline to the end of intervention at eight weeks.)
- Change in satisfaction with the program:(Change from week two to week four, week six and the end of the program on week eight.)
研究者
Israel Halperin
Senior faculty member
Tel Aviv University