动力或速度:哪个指标更准确地用于模拟赛道上的耐力跑步性能?
Santiago A Ruiz-Alias1,2, Alberto A Ñancupil-Andrade1,2,3, Alejandro Pérez-Castilla4,5
1Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.
European journal of sport science
|October 14, 2024
概括
功率计为耐力运动员提供比基于速度的设备更准确的临界功率和超临界功率测量. 这种精度延伸到预测长期性能,使得功率计在训练分析中优越.
科学领域:
- 体育科学 运动科学 运动科学
- 运动生理学 运动生理学
- 业绩分析 业绩分析 业绩分析
背景情况:
- 精确测量生理和性能参数对于优化耐力训练至关重要.
- 评估临界功率 (CP) 和CP (W') 上的工作的传统方法依赖于各种测量工具.
- 可穿戴技术的出现,包括惯性测量单元 (IMU) 和全球导航卫星系统 (GNSS) 设备,提供了跟踪性能指标 (如速度) 的新方法.
研究的目的:
- 为了比较输出功率 (通过功率计测量) 与速度 (通过IMU和GNSS测量) 的准确性,确定关键功率 (CP) 和速度 (CS),CP (W') 和D' (D') 上的工作,以及60分钟的耐力性能.
- 评估关键绩效指标的每个测量方法相关的可靠性和错误.
主要方法:
- 15名训练有素的运动员完成了7场400米赛道计时赛.
- 临界功率 (CP) /速度 (CS) 和工作超过CP (W') /D'使用时间模型的反向计算,使用3,4,5,10和20分钟的试验.
- 使用功率定律模型估计了长时间 (60分钟) 的性能,使用1,3分钟和10分钟的试验,并与实际性能进行比较.
主要成果:
- 功率计显示CP (2.7%) 和W' (13.8%) 的估计标准误差低于CS (3.4%) 和D' (20.6-20.7%) 的IMU/GNSS.
- 功率计还显示CP/W'计算的变化系数 (4.9%) 低于CS/D' (10.9%) 的IMU/GNSS.
- 对于60分钟的性能估计,功率计的错误率低于IMU和GNSS设备.
结论:
- 与IMU和GNSS设备的基于速度的测量相比,功率计在确定关键功率,工作能力和预测轨道上的耐力性能方面提供了卓越的准确性和可靠性.
- 这些发现表明,对于耐力运动中详细的生理模型和训练处方来说,输出功率是比速度更强大的指标.
- 该研究强调了选择适当的测量工具的重要性,以便在训练有素的运动员中进行准确的性能分析和训练优化.
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