The Effect of Heat Acclimation on Repeated Bouts of Strenuous Heat Stress, Hand Cooling Efficacy, and the Maintenance Thereof.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 34
- 主要终点
- Internal Body Temperature
研究概览
简要总结
This study had three aims:
- To determine the impact of consecutive days of exercise on thermoregulation and cardiovascular strain.
- To determine the efficacy of a hand cooling device to cool individuals throughout a heat acclimation period.
- To assess the maintenance of thermoregulatory and cardiovascular adaptations derived from heat acclimation during a 25-day intermittent exercise-heat exposure protocol.
详细描述
Participants completed 14 days of exercise heat acclimation in either a hot or cool environment, followed by a heat or cool exercise exposure every 5th day for 25 days. Cardiovascular, thermoregulatory, and perceptual strain were measured throughout exercise each day. Hydration assessment and stress response via blood biomarkers were measured before and after exercise. Aerobic capacity was measured before and after heat acclimation as well as after the intermittent exercise-heat exposure. Hand cooling was implemented periodically during exercise-heat stress visits to determine cooling efficacy before and after heat acclimation.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •no chronic health problems
- •no previous history of exertional heat stroke within the past 3 years
- •no history of cardiovascular, metabolic or respiratory disease
- •no current musculoskeletal injury that limits physical activity
排除标准
- •exercise less than once per week
- •VO2max < 45 ml/kg/min
结局指标
主要结局
Internal Body Temperature
时间窗: 5 days
Rectal temperature was assessed five days following measurement at baseline.
次要结局
- Heart Rate(5 days)
研究者
Douglas J Casa
Professor
University of Connecticut