The First-Night Effect: Sex Differences in the Impact of Unfamiliar Sleeping Environment on Strength and Muscular Endurance Performance in Resistance-trained Participants
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 32
- 试验地点
- 1
- 主要终点
- Vertical Jump test (CMJ)
研究概览
简要总结
Introduction: The first-night effect, characterized by disturbed sleep in an unfamiliar environment, may impair next-day physical performance. However, whether this response differs between men and women remains unclear. This study investigated sex differences in the effects of sleeping in an unfamiliar environment on strength and muscular endurance in resistance-trained individuals.
Methods: Thirty-two resistance-trained participants (16 women, 16 men; 23 ± 4 years) completed a randomized, counterbalanced crossover study involving two conditions: sleeping for 8 h at home or in the laboratory. The following morning, participants performed bench press and back squat strength tests across 25-90%1RM, followed by muscular endurance tests to failure at 65%1RM.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Other
- 盲法
- Single (Investigator)
盲法说明
Investigador and Statistician were blinded
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Age between 18 and 35 years.• Body Mass Index (BMI) < 25 kg/m².
- •Resistance-trained individuals (more than 2 years of structured training).
- •Healthy men and women without neurological, cardiometabolic, immunological, or physical conditions that prevent them from exercising.
- •Participants must be able to perform the tests described in the following section.
排除标准
- •History of neuromuscular diseases, heart disease, or conditions that may affect liver or muscle metabolism.
- •Use of drugs, stimulants, or sports supplements that could interfere with the dietary supplement used in the study.
- •Sedentary habits (less than 150 minutes/week of moderate exercise).• Having undergone prolonged periods of physical inactivity in the 6 months prior to the study.
- •Engaging in strenuous exercise within 48 hours prior to the tests.• Failure to replicate the same food intake on both experimental days.
- •Consumption of caffeine or any other stimulant the day before the tests.
研究组 & 干预措施
8h Sleep at home
Participants sleep 8h at home
干预措施: first-night effect (at home) (Behavioral)
8h Sleep at the Laboratory
Participants sleep 8h at the laboratory
干预措施: First-Night Effect at the laboratory (Behavioral)
结局指标
主要结局
Vertical Jump test (CMJ)
时间窗: Through study completion, an average of 3 week
cm of Height and W/kg generate during a CMJ
Mean concentric velocity at 25%, 50%, 75%, and 90% 1RM (m/s)
时间窗: Through study completion, an average of 3 weeks
Mean velocity at different %1RM (25%, 50%, 75%, 90%)
Number of repetitions performed to task failure during the bench press and back squat exercises at 65% 1RM.
时间窗: Through study completion, an average of 3 weeks
In bench press and back squat exercises
Bar velocity displacement (mean velocity, m/s) performed in 1 set at 65%1RM until task failure
时间窗: Through study completion, an average of 3 weeks
In bench press and back squat exercises
Maximal force during handgrip and isometric mid-thigh pull tests (N)
时间窗: Through study completion, an average of 3 week
N generated
次要结局
- Mood state (tension, depression, anger, vigor, fatigue and confusion)(Through study completion, an average of 3 weeks)
研究者
Alberto Pérez-López
Principal Investigator
University of Alcala