The Effects of The Exercise Intensity and Rest Duration on Physiological and Perceptual Responses During 4-Second Sprint Interval Exercise
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 11
- 试验地点
- 1
- 主要终点
- Cardiovascular changes
研究概览
简要总结
The purpose of this study is to investigate the acute effects of different intensities (i.e., 50, 75, and 100% of maximal anaerobic power) of 4-s sprint interval exercise on physiological responses. Secondly, it will determine the relationship between intensity and recovery duration (i.e., 15, 30, or 45-s) that will stimulate the cardiovascular and metabolic systems.
详细描述
Background Short sprint interval training (sSIT) is typically performed at maximal intensity, generating power far above what is needed to reach peak oxygen consumption (VO₂peak). However, the physiological effects of submaximal sprint intensities and different recovery periods are not well understood.
Study Aim This study examined how power output and oxygen consumption (VO₂) respond to repeated 4-second sprints at 50%, 75%, and 100% of maximal power (Pmax) with rest periods of 15, 30, or 45 seconds.
Methods Eleven recreationally active participants completed nine trials, each consisting of thirty 4-second cycling sprints under different intensity and recovery conditions.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Young (18-30),
- •Recreationally active, but untrained (not meeting ACSM's recommendations of 150 min/week of moderate-vigorous aerobic exercise)
排除标准
- •Cardiovascular disease
- •Subjects who were exercising regularly (>75 min/week) were excluded.
研究组 & 干预措施
50% Pmax and 15-s rest duration
Participants used 50% Pmax and 15-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
50% Pmax and 30-s rest duration
Participants used 50% Pmax and 30-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
50% Pmax and 45-s rest duration4
Participants used 50% Pmax and 45-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
75% Pmax and 15-s rest duration
Participants used 75% Pmax and 15-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
75% Pmax and 30-s rest duration
Participants used 75% Pmax and 30-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
75% Pmax and 45-s rest duration
Participants used 75% Pmax and 45-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
All-out Pmax and 15-s rest duration
Participants used all-out Pmax and 15-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
all-out Pmax and 30-s rest duration
Participants used all-out Pmax and 30-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
all-out Pmax and 45-s rest duration
Participants used all-out Pmax and 45-s rest duration during 30 bouts of 4-s sprint interval training.
干预措施: Preventive (Behavioral)
结局指标
主要结局
Cardiovascular changes
时间窗: From enrollment (Day 1) to the end of treatment (9 trials) (Day 11), through study completion, an average of 5 weeks.
The %VO2peak associated with repeated submaximal power sprints (%Pmax), particularly when paired with varying rest periods, remains unknown. The aim of this study was to systematically investigate the cardiovascular changes for better exercise programming, measured in mL/min/kg.
次要结局
未报告次要终点