High-intensity Interval Training on Cardiorespiratory Fitness in Overweight Women
Effect of Low-volume High-intensity Interval Training on Cardiorespiratory Fitness and Total Body Fat in Overweight Women
High-intensity interval training (HIIT) is currently considered one of the most effective strategies to improved cardiorespiratory fitness, which is recognized as a protective factor for cardiovascular diseases and metabolic diseases such as overweight and obesity. However, current evidence is still limited and requires clarity (frequency, time per session and intensity) regarding to greater increases attributed to HIIT.
The aim of this study is to compare the effect of a low-volume high-intensity interval training versus a moderate-intensity continuous exercise on maximal oxygen consumption in overweight women 18 to 44 years old.
研究概览
地位
条件
详细说明
Thirty-six women will be randomly assigned to one of two aerobic exercise on a real-life setting supervised for a physical activity instructor. The interventions will performed three times a week for ten-weeks (on alternate days).
The first two weeks will correspond to the conditioning period (30 minutes between 55-65% of maximum heart rate (HRmax). From week three, 18 participants will perform 30 minutes of continuous exercise at an intensity between 65-75 % of HRmax, and the remaining 18 will complete 21.5 minutes of interval exercise at an intensity between 90-95% of HRmax, with recoveries between 50-55% of HRmax.
All Participants will be evaluated to measure their maximal oxygen consumption, total body fat, waist circumference, body mass index, systolic blood pressure, diastolic blood pressure, prior to start the interventions and at the end of the program (week 11).
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Antioquia
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Medellín、Antioquia、哥伦比亚
- Universidad de Antioquia
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Overweight (≥ 25 kg/m-2) women 18 to 44 years.
- Healthy volunteers.
- Perform ≤ 600 Met/min/week.
Exclusion Criteria:
- Perform high-intensity interval exercise in the last six month.
- Smoker.
- History of asthma.
- History of diabetes.
- History of hypertension.
- History of cardiovascular disease.
- History of coronary heart disease.
- Arrhythmias.
- Personal history of surgical procedures in the last three months
- Uncontrolled non-communicable diseases
- Under medical treatment with anticoagulants, beta-blockers, calcium antagonists, bronchodilators, and/or steroids.
- Psychological, neuromotor and/or osteo-muscular conditions that may affect participation in an exercise program.
- Psychoactive drug abuse.
学习计划
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：高强度间歇训练
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21.5 minutes of high-intensity interval exercise at an intensity between 90-95 of HRmax (15x30 s), with recoveries at 50-60% of HRmax (14x60 s).
24 sessions, 3x weekly of walking and running outdoors on a sports field in a supervised manner.
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有源比较器：Moderate-intensity continuous exercise
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30 minutes of continuous exercise at an intensity between 65-75% of HRmax.
24 sessions, 3x weekly of walking and jogging outdoors on a sports field in a supervised manner
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Change in maximal oxygen consumption
大体时间：Baseline and after 10 weeks
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Maximal oxygen consumption will be obtained using a graded exercise test on a treadmill (Trackmaster® model TMX 425C) using a portable K4b2 gas analyzer (Cosmed Inc., IL, USA)
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Baseline and after 10 weeks
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Change in total body fat
大体时间：Baseline and after 10 weeks
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Total body fat will be obtained using an Omron® HBF-510 (Omron Healthcare, Inc. Bannockburn, IL, USA) bioelectrical impedance machine.
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Baseline and after 10 weeks
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合作者和调查者
出版物和有用的链接
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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