使用一个低成本的二维摄像机预测动力强度指数 (DSI):一种机器学习方法
Mostafa Haj Lotfalian1, Ali Abbasi2
1Department of Physical Education and Sport Sciences, Faculty of Psychology and Educational Sciences, Yazd University, Yazd, Iran. M.hajlotfalian@yazd.ac.ir.
Scientific reports
|November 7, 2025
概括
这项研究表明,低成本的二维视频和机器学习可以准确预测动力强度指数 (DSI),这是神经肌肉性能的关键指标. 这为传统实验室设备提供了价格实惠,可访问的替代方案.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 机器学习应用 机器学习应用
背景情况:
- 动力强度指数 (DSI) 是神经肌肉性能的一个关键指标.
- 传统的DSI评估依赖于昂贵的强力板和实验室级设备.
- 需要更容易获得和更具成本效益的方法来评估DSI.
研究的目的:
- 为了研究低成本的有效性,2D视频摄像头系统与监督机器学习 (ML) 模型相结合,用于预测DSI.
- 评估基于视频的弹力估计在反运动跳跃 (CMJ) 期间的准确性.
- 为神经肌肉诊断提供可扩展和非侵入性的替代方案.
主要方法:
- 263名健康参与者进行了CMJ和同位数中部拉动 (IMTP).
- 用动力计测量同度力;根据2D视频数据估计弹道力.
- 六个时空视频特征,高度和重量被用来训练回归模型 (高斯过程回归,神经网络).
主要成果:
- 高斯过程回归和神经网络显示了DSI的高预测准确性 (R2 > 0.92,RMSE < 0.06).
- 基于视频的估计显示出与实验室衍生的强力板值有很好的一致性.
- 机器学习模型使用视频衍生的时空特征成功预测了DSI.
结论:
- 将简单的2D视频系统与ML算法相结合,为DSI估计提供了一种准确且负担得起的方法.
- 这种方法为神经肌肉评估提供了传统实验室设备的可扩展,非侵入性的替代方案.
- 这些发现支持对绩效监测的更广泛的访问,特别是在现场设置和青少年运动中.
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