Chiba Noboru, Minamisawa Tadayoshi
Department of Occupational Therapy, Yamagata Prefectural University of Health Sciences, 260 Kamiyanagi, Yamagata 990-2212, Japan.
Department of Physical Therapy, Yamagata Prefectural University of Health Sciences, 260 Kamiyanagi, Yamagata 990-2212, Japan.
J Funct Morphol Kinesiol. 2022 Jan 6;7(1):6. doi: 10.3390/jfmk7010006.
The purpose of this study was to clarify the lower limb joint motor coordination of para-athletes during running motion from frequency characteristics and to propose this as a method for evaluating their performance. The subject used was a 43-year-old male para-athlete who had suffered a left cerebral infarction. Using a three-dimensional motion analysis system, the angles of the hip, knee, and ankle joints were measured during 1 min of running at a speed of 8 km/h on a treadmill. Nine inter- and intra-limb joint angle pairs were analyzed by coherence and phase analyses. The main characteristic of the stroke patient was that there were joint pairs with absent or increased coherence peaks in the high-frequency band above 4 Hz that were not found in healthy subjects. Interestingly, these features were also observed on the non-paralyzed side. Furthermore, a phase analysis showed different phase differences between the joint motions of the stroke patient and healthy subjects in some joint pairs. Thus, we concluded there was a widespread functional impairment of joint motion in the stroke patient that has not been revealed by conventional methods. The coherence analysis of joint motion may be useful for identifying joint motion problems in para-athletes.
本研究的目的是从频率特征方面阐明残疾运动员在跑步运动过程中的下肢关节运动协调性，并将此作为评估他们运动表现的一种方法。研究对象是一名43岁的男性残疾运动员，他曾患左脑梗死。使用三维运动分析系统，在跑步机上以8公里/小时的速度跑步1分钟期间，测量髋、膝和踝关节的角度。通过相干分析和相位分析，对9对肢体间和肢体内部的关节角度进行了分析。中风患者的主要特征是，在4赫兹以上的高频带中，存在健康受试者未发现的相干峰值缺失或增加的关节对。有趣的是，在非瘫痪侧也观察到了这些特征。此外，相位分析显示，在一些关节对中，中风患者和健康受试者的关节运动之间存在不同的相位差。因此，我们得出结论，中风患者存在广泛的关节运动功能损害，而传统方法尚未揭示这一点。关节运动的相干分析可能有助于识别残疾运动员的关节运动问题。
