Changes in Physiological Performance, Psychological State, and Sleep Quality of Athletes From Sichuan Province, China During the Pre Competition Weight Loss Stage
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 16
- 试验地点
- 1
- 主要终点
- Serum blood urea
研究概览
简要总结
The objective of this observational study is to assess the long-term impact of a combined slow and rapid weight reduction strategy on the physiological performance, mental state, and sleep quality of male freestyle wrestlers. The primary question it seeks to address is:
Does the combined weight reduction approach affect the physiological performance, mental state, and sleep quality of male freestyle wrestlers during the pre-competition period?
Participants will undergo tests at three stages of their weight reduction process (T1, T2, T3) over a period of 38 days prior to the competition, providing data on various physiological and psychological indicators.
详细描述
The goal of this observational study is to investigate the long-term effects of a combined slow and rapid weight reduction strategy on the physiological performance, mental state, and sleep quality of male freestyle wrestlers over the period leading up to a competition. The main question it aims to answer is:
Does the combined weight reduction approach affect the physiological performance, mental state, and sleep quality of male freestyle wrestlers when implemented during the pre-competition phase?
Participants, who are already undergoing this weight reduction strategy as part of their regular training regimen for the 2024 Chinese Wrestling Championships, will be assessed at three distinct time points over a 38-day period. The study will involve the following detailed procedures:
Participant Selection: The study includes 16 male freestyle wrestlers from Sichuan Province, China, with an average age of 20.2 years, and extensive competitive experience.
Study Duration: The observation period spans 38 days prior to the competition, divided into a 30-day slow weight reduction phase and a 7-day rapid weight reduction phase, with the final assessment conducted the day before the competition.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 30 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Participants must be male freestyle wrestlers aged 18 years or older
- •Athletes should be preparing for the 2024 Chinese Wrestling Championships
- •Individuals must be willing to undergo all tests and assessments at the three specified time points (T1, T2, T3) over the 38-day study period
- •Participants should be in good health, with no medical conditions that would prevent them from completing the study
- •Athletes must be undergoing a combined slow and rapid weight reduction strategy as part of their regular training regimen
排除标准
- •Individuals with a history of severe cardiovascular, metabolic, or endocrine disorders that could affect the study outcomes
- •Wrestlers who are unable to comply with the study's testing schedule or intervention protocols
- •Participants with any condition that would make them unsuitable for the anaerobic power testing or blood sampling
- •Wrestlers who are unwilling or unable to provide informed consent
结局指标
主要结局
Serum blood urea
时间窗: 38 days
Approximately 3 mL of antecubital venous blood was collected from participants and tested for serum blood urea.
Serum immunoglobulin M
时间窗: 38 days
Approximately 3 mL of antecubital venous blood was collected from participants and tested for serum immunoglobulin M.
Anaerobic Power Testing
时间窗: 38 days
The Wingate 30-second anaerobic test (MONARK 894E, MONARK Company, Sweden) was used. Participants pedalled as fast as possible, adjusting to the prescribed resistance load within 3 to 4 seconds, and started timing for a 30-second all-out cycling exercise. The average power over 30 seconds, total work output, maximum power output within 5 seconds, and minimum power output within 5 seconds were recorded.
Blood Pressure Testing
时间窗: 38 days
Participants' blood pressure were measured in a supine position using an instrument (manufactured in Shenzhen, China, model: CK-W355) by laboratory personnel, with the average of three readings taken.
Serum creatine kinase
时间窗: 38 days
Approximately 3 mL of antecubital venous blood was collected from participants and tested for serum creatine kinase.
Body Composition Testing
时间窗: 38 days
The participants' weight and body fat percentage were tested using the Korean INBODY 3.0.
Sleep quality
时间窗: 38 days
The pittsburgh sleep quality index, a questionnaire for assessing sleep quality over the past month, consists of 18 self-rated items forming seven components, with a total score ranging from 0 to 21, where higher scores indicate worse sleep quality. The scale has a reliability between 0.65 and 0.84 and a validity greater than 0.85 for Chinese individuals.
Serum testosterone
时间窗: 38 days
Approximately 3 mL of antecubital venous blood was collected from participants and tested for serum testosterone.
Serum immunoglobulin A
时间窗: 38 days
Approximately 3 mL of antecubital venous blood was collected from participants and tested for serum immunoglobulin A.
Serum immunoglobulin G
时间窗: 38 days
Approximately 3 mL of antecubital venous blood was collected from participants and tested for serum immunoglobulin G.
The Profile of Mood States
时间窗: 38 days
For psychological state: the Profile of Mood States, a tool for studying mood states and their relation to exercise performance, was used. Participants answered 40 questions with a five-point scale (0 to 4 points, with 0 indicating 'almost none', 1 'a little', 2 'moderate', 3 'quite a bit', and 4 'extremely'), including seven mood dimensions: tension, anger, fatigue, depression, energy, confusion, and self-esteem. Energy and self-esteem are positive mood dimensions, with higher scores indicating better mood states, while the other five are negative mood dimensions, with higher scores indicating worse mood states. The total score, total mood disturbance (calculated as the sum of the five negative mood scores minus the sum of the two positive mood scores plus 100), indicates worse mood states with higher scores. The scale has a reliability between 0.60 and 0.82 and a validity greater than 0.90 for Chinese individuals.
次要结局
未报告次要终点
研究者
Cheng Liang
Principal Investigator
Chengdu Sport University