Effect of Ethnicity on Changes in VO2max and Cardiac Output in Response to Short-Term High Intensity Interval Training
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 22
- 试验地点
- 2
- 主要终点
- Change in baseline in VO2max at 3 weeks
研究概览
简要总结
The purpose of this study was to determine if ethnicity alters training responsiveness to a low dose of high intensity interval training in inactive women.
详细描述
Prior to the session, women completed a 4-minute warmup at 10 % PPO. Each subject completed 9 sessions of HIIT over a 3-week period which consisted of eight to ten 1-minute bouts of cycling at 85% PPO with 75-second recovery between bouts at 10 % PPO. This protocol is well-tolerated in inactive individuals. Continuously during each session, heart rate was monitored using telemetry. On days 1, 3, 6, and 9 of training, the physical activity enjoyment scale (PACES) was completed. VO2max and cardiac output max were assessed prior to training, as well as post.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Sequential
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Between the age of 18-45
- •Healthy and non-obese (BMI < 30 kg/m2)
- •Perform less than 150 minutes per week of exercise in the last 12 months
- •100% Caucasian or 100% Hispanic
排除标准
- •Mixed ethnicity
结局指标
主要结局
Change in baseline in VO2max at 3 weeks
时间窗: 3 weeks
Each participant performed VO2max testing on an electronically-braked cycle ergometer using a ramp protocol. During exercise, subjects expired through a plastic mouthpiece and low resistance valve into tubing connected to a mixing chamber. Measures of ventilation and expired fractions of oxygen and carbon dioxide were obtained throughout exercise by a metabolic cart. Gas exchange data including VO2, VCO2, and ventilation were time-averaged every 15 seconds. The test was terminated when the subject's pedal cadence was below 50 rev/min.
Change in baseline in cardiac output max at 3 weeks
时间窗: 3 weeks
During the VO2max assessment, participants wore a thoracic impedance device to measure heart rate and stroke volume, calculating their cardiac output.
次要结局
未报告次要终点
研究者
Todd A. Astorino Ph.D
PhD, FACSM
California State University, San Marcos