通过使用相变材料冷却毯来增强生理恢复和随后的运动性能在炎热的环境中
1Department of Critical Care Medicine, The Fifth Medical Center of Chinese PLA General Hospital, No.8 of East Street, Beijing, 100071, China.
Journal of thermal biology
|February 13, 2024
概括
在运动期间使用相变材料 (PCM) 制冷毯显著改善了生理恢复,并在炎热条件下提高了随后的运动表现. 这种冷却方法有助于运动员在炎热的情况下.
科学领域:
- 运动生理学 运动生理学
- 环境生理学环境生理学
- 运动科学 运动科学 运动科学
背景情况:
- 运动期间的热应激会影响生理恢复,并降低后续的表现.
- 对于在炎热的环境中竞争的运动员来说,有效的冷却策略至关重要.
- 换相材料 (PCM) 提供了快速高效的热交换的潜力.
研究的目的:
- 为了评估相变材料 (PCM) 制冷毯的有效性,用于间接冷却.
- 评估PCM冷却对生理恢复参数的影响.
- 为了确定PCM冷却对随后在热中运动表现的影响.
主要方法:
- 18名男性志愿者在气候室 (33°C,40%RH) 中完成了两次耗尽的跑步机跑步.
- 参与者接受了自然冷却 (CON) 或在发作之间10分钟的PCM冷却毯子应用.
- 生理学参数 (核心温度,心率等) 并测量了运动表现指标.
主要成果:
- 与CON组相比,PCM组在冷却后的皮肤温度,核心温度,心率和呼吸率显著降低.
- 在PCM组中观察到平均皮肤和核心温度的较大降低.
- 在第二场比赛中,PCM组表现出较低的峰值核心温度和心率,减少感知到的劳动力,以及更高的平均跑步速度.
结论:
- 在炼期间使用PCM冷却毯进行冷却,有效地提高了在高温下的生理恢复.
- PCM冷却显著提高了随后的运动能力和在炎热条件下的表现.
- 对于运动员来说,PCM冷却毯子是一个可行的策略,可以减轻与热量相关的性能下降.
相关概念视频
Decreased Body Temperature
617
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...
617
Methods of reducing fever
663
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:
663
Mechanism of heat transfer
1.2K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.2K
Body Temperature
954
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
954
Mechanisms of Heat Transfer
325
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
325
Increased Body Temperature
669
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...
669


