摄入冰泥对体温和在炎热环境下软球投球表现的影响:一个随机交叉试验
Urara Numata1, Takuma Yanaoka2, Shiho Kurosaka1
1Graduate School of Humanities and Social Sciences, Hiroshima University, 1-1-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8524, Japan.
Journal of physiological anthropology
|June 29, 2023
概括
在炎热的天气中摄入冰泥会降低软球投手的体温和感知力度. 然而,这种方法并不能提高比赛期间的投球性能或准确性.
科学领域:
- 运动科学 运动科学 运动科学
- 环境生理学环境生理学
- 人类表现的人类表现.
背景情况:
- 软球运动员经常在炎热的条件下比赛.
- 冰泥摄入对体温和在炎热环境下投球表现的影响的研究有限.
- 这项研究解决了对软球投手预冷策略的证据需求.
研究的目的:
- 研究冰泥摄入对软球投手体温和投球表现在热环境中模拟比赛中的影响.
- 为了比较冰泥摄入与冷液摄入的疗效,用于管理热和生理应变.
主要方法:
- 一个随机的交叉设计,涉及七名热度适应的业余软球投手 (四名男性,三名女性).
- 参与者在炎热的条件下 (30.8°C,57.0%湿度) 完成模拟软球比赛.
- 进行了两项试验:对照 (冷却液体摄入) 和冰 (冰泥摄入) 在局前和局之间.
主要成果:
- 与冷却液体相比,摄入冰泥显著降低了直肠温度 (p=0.021).
- 在冰试验中,心率显著下降 (p<0.001),手握强度增加 (p=0.001).
- 感知到的劳动力,热舒适度和感觉在摄入冰泥时得到改善 (p<0.05).
- 球速和投球准确度不受冰泥摄入的影响.
结论:
- 在炎热的条件下,摄入冰泥有效地减少软球中的热,心血管和感知应变.
- 尽管有生理上的好处,但摄入冰泥并不能提高软球投球性能 (速度或准确性).
- 进一步的研究可能会探索将冰泥摄入纳入软球训练和比赛的最佳方案.
相关概念视频
Hot Weather Concreting
94
Concreting at elevated temperatures accelerates the hydration process, leading to quicker setting but potentially reducing the long-term strength of the concrete structure. Additionally, low air humidity fosters rapid moisture loss from the concrete, resulting in reduced workability, pronounced plastic shrinkage, and a higher likelihood of crazing.
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
94
Design Example: Managing Concrete Workability
102
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
102
Decreased Body Temperature
654
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
654
Methods of reducing fever
706
The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
Pharmacological Methods of Reducing Fever:
706
Factors Affecting Body Temperature
4.5K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
4.5K
Increased Body Temperature
714
A body temperature above 38°C (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
714


