在U23精英骑自行车运动员中实验室和现场衍生的冲刺动力储备之间的协议
Peter Leo1,2, Iñigo Mujika3,4
1Department of Sport Science, University of Innsbruck, Innsbruck, Austria.
International journal of sports physiology and performance
|January 22, 2026
概括
冲刺动力储备模型准确地预测了实验室和现场测试中的循环功率输出. 这些预测对从业者来说是可靠的,增强了培训策略.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 骑自行车的性能分析
背景情况:
- 冲刺动力储备 (SPR) 模型用于预测高强度循环功率输出.
- 在实验室和现场条件下评估SPR模型的准确性对于实际应用至关重要.
研究的目的:
- 评估SPR模型在严重和极端强度领域的预测能力.
- 将实验室和现场设置中的SPR模型预测与实际平均最大功率输出 (MMP) 进行比较.
主要方法:
- 十名23岁以下的男子骑自行车者接受了实验室的增量和10秒冲刺测试,以及野外的3分钟和10秒冲刺测试.
- 实验室 (PREDLAB) 和现场 (PREDFIELD) 条件的预测与现场记录的MMP使用Bland-Altman分析在不同时间段进行了比较.
主要成果:
- 在实验室和现场冲刺测试之间,或在3分钟的现场测试和实验室峰值功率之间没有发现显著差异.
- SPR模型的时间常数 (k=0.027) 显示出与MMP (R2 = .98) 极好的匹配.
- 大多数PREDLAB和PREDFIELD预测都在95%的MMP协议范围内,除了150秒的PREDFIELD外.
结论:
- 从实验室和现场条件中得出的SPR模型预测显示出可比的可靠性.
- SPR模型是一个可靠的工具,可以让从业者自信地预测高强度输出功率.
相关概念视频
01:08Power
12.9K
The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
12.9K
01:16Flame Photometry: Lab
898
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
898
01:25Power System Distribution
1.1K
Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
The transmission system is designed...
The transmission system is designed...
1.1K
02:36Nuclear Power
9.4K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
9.4K
01:12Power and Energy
1.9K
The power and energy delivered to an element are subjects of great significance in the field of electrical engineering. It is a well-known fact that a 100-watt light bulb emits more light than a 60-watt one. Therefore, power and energy calculations play a crucial role in the analysis of electrical circuits.
Power, defined as the time rate of expending or absorbing energy, is quantified in units called watts (W). The relation between power and energy is mathematically given as
Power, defined as the time rate of expending or absorbing energy, is quantified in units called watts (W). The relation between power and energy is mathematically given as
1.9K
01:13Average Power
1.0K
In practical electrical applications, the concept of time-varying instantaneous power is not frequently utilized. Instead, focus shifts to the more practical quantity known as average power. Average power is determined by integrating the instantaneous power over a specified time period and subsequently dividing it by that duration.
1.0K