对重复循环冲刺的运动反应,连续和间歇性缺氧暴露
Siu Nam Li1, Prashan Anbalagan1, Joel Pang1
1School of Human Sciences (Exercise and Sports Science), The University of Western Australia, Perth, Western Australia, Australia.
European journal of sport science
|June 14, 2024
概括
在重复冲刺过程中持续或间歇性缺氧会对表现产生不同的影响. 持续的缺氧显著降低了功率输出,而间歇性缺氧则影响了基于运动或恢复期间时间的氧和.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 高空训练 高空训练
背景情况:
- 了解强度运动期间不同氧气供应的影响对于优化训练和表现至关重要.
- 模拟高海拔的Normobaric缺氧越来越多地用于引起生理适应.
- 在重复冲刺方案中缺氧暴露的时间和持续时间需要进一步调查.
研究的目的:
- 为了研究在重复冲刺循环协议的不同阶段急性氧气操纵的影响.
- 为了比较连续与间歇性normobaric缺氧对性能,生理和感知反应的影响.
- 为了确定如何在运动中施加缺氧,冲刺和恢复期对结果产生影响.
主要方法:
- 十二名训练有素的雄性在四个条件下进行了四组五次5秒"全力以赴"循环冲刺:连续缺氧 (C-HYP),冲刺期间间歇性缺氧 (I-HYP_SPRINT),恢复期间间歇性缺氧 (I-HYP_RECOVERY) 和正常性缺氧 (C-NOR).
- 测量包括高峰和平均功率输出,外周氧和,心率,血液乳酸和通过近红外光谱的肌肉氧化.
- 还记录了感知反应,例如呼吸困难和感知劳动力的评级.
主要成果:
- 与C-NOR相比,C-HYP和I-HYP_RECOVERY的峰值和平均功率输出显著较低 (4-5%),而C-NOR的峰值和平均功率输出则明显低.
- 在C-HYP和I-HYP_SPRINT的冲刺比赛中,以及在C-HYP和I-HYP_RECOVERY的恢复过程中,周围氧气和明显降低.
- 呼吸困难与C-HYP显著增加,但其他生理和感知措施在条件之间是可比的.
结论:
- 应用低氧暴露 (连续或间歇) 的方法在重复循环冲刺期间对机械性能产生不同影响.
- 虽然持续的缺氧和恢复阶段的缺氧减少了功率输出,但在不同的缺氧应用策略中,内部生理需求在很大程度上仍然相似.
- 这些发现表明,低氧暴露的时间是影响重复冲刺运动中性能结果的关键因素.
更多相关视频
07:40Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
Published on: October 10, 2019
7.3K
10:34A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches
Published on: October 18, 2024
1.2K
相关概念视频
01:20Exercise and Cardiovascular Response
780
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
780
01:27Exercise and Muscle Performance
1.4K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.4K
01:17Exercise and Cardiac Output
982
Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be...
Sustained exercise increases the muscles' oxygen demand, which can be...
982
01:24Muscle Recovery and Fatigue
2.0K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
2.0K