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采样速率,过和扭矩开始检测对四脚体扭矩发展速率和扭矩稳定性的影响
McKenzie S White1, Megan C Graham1, Tereza Janatova1
1Department of Physical Therapy, University of Kentucky, Lexington, KY 40536, USA.
Sensors (Basel, Switzerland)
|July 13, 2024
概括
在临床膝关节功能评估中,标准化四头骨扭矩发展速度 (RTD) 和扭矩稳定性的测量非常重要. 虽然通常是强大的,但扭矩开始检测显著影响早期RTD,需要仔细考虑.
科学领域:
- 生物力学 生物力学
- 神经肌肉功能 神经肌肉功能
- 康复科学 康复科学 康复科学
背景情况:
- 四肢扭矩发展速度 (RTD) 和扭矩稳定性是爆炸强度和力控制的关键指标.
- 缺乏标准化的测量协议,这阻碍了对膝关节功能评估的研究和人群进行比较.
研究的目的:
- 调查采样率,信号过和扭矩开始检测对RTD和扭矩稳定性测量的影响.
- 为了确定最佳的参数,可靠和有效的评估四头肌功能.
主要方法:
- 对前十字带重建和没有前十字带重建的个体进行了同度四头肌强度测试.
- 数据是在2222赫兹收集的,然后通过各种切断频率进行降低采样和过.
- 使用不同的值 (0.1Nm,1Nm,5Nm) 检测扭矩开始.
主要成果:
- 所有测试的参数组合都显示出统计学意义 (p < 0.05),但肢体之间的差异一致.
- 临床相关差异 (+/-10%) 主要受扭矩发作检测的影响,特别是影响早期RTD (0-100 ms).
- 对RTD和扭矩稳定性的测量表明,在各种信号处理参数中,总体稳定性很强.
结论:
- 虽然RTD和扭矩稳定性测量在很大程度上是稳定的,但选择扭矩开始检测非常关键.
- 仔细选择扭矩开始对于早期的RTD评估和短时间框架尤其重要.
- 推对扭矩开始检测进行标准化,以提高临床评估中的可比性.
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