Heuvelmans Pieter, Benjaminse Anne, Bolt Ruben, Baumeister Jochen, Otten Egbert, Gokeler Alli
Exercise Science and Neuroscience Unit, Department of Exercise & Health, Paderborn University, Paderborn, Germany.
Department of Human Movement Sciences, Faculty of Medical Sciences, University of Groningen, Groningen, the Netherlands.
Sports Biomech. 2022 Jul 3:1-16. doi: 10.1080/14763141.2022.2093264.
Wearable inertial sensors (WIS) facilitate the preservation of the athlete-environment relationship by allowing measurement outside the laboratory. WIS systems should be validated for team sports movements before they are used in sports performance and injury prevention research. The aim of the present study was to investigate the concurrent validity of a wearable inertial sensor system in quantifying joint kinematics during team sport movements. Ten recreationally active participants performed change-of-direction (single-leg deceleration and sidestep cut) and jump-landing (single-leg hop, single-leg crossover hop, and double-leg vertical jump) tasks while motion was recorded by nine inertial sensors (Noraxon MyoMotion, Noraxon USA Inc.) and eight motion capture cameras (Vicon Motion Systems Ltd). Validity of lower-extremity joint kinematics was assessed using measures of agreement (cross-correlation: XCORR) and error (root mean square deviation; and amplitude difference). Excellent agreement (XCORR >0.88) was found for sagittal plane kinematics in all joints and tasks. Highly variable agreement was found for frontal and transverse plane kinematics at the hip and ankle. Errors were relatively high in all planes. In conclusion, the WIS system provides valid estimates of sagittal plane joint kinematics in team sport movements. However, researchers should correct for offsets when comparing absolute joint angles between systems.
可穿戴惯性传感器（WIS）通过允许在实验室外进行测量，有助于保持运动员与环境的关系。在将WIS系统用于运动表现和损伤预防研究之前，应对其在团队运动中的有效性进行验证。本研究的目的是调查一种可穿戴惯性传感器系统在量化团队运动中关节运动学方面的同时效度。十名有休闲运动习惯的参与者进行了变向（单腿减速和侧步切入）和跳落（单腿单跳、单腿交叉跳和双腿垂直跳）任务，同时由九个惯性传感器（Noraxon MyoMotion，Noraxon美国公司）和八个动作捕捉摄像头（Vicon Motion Systems Ltd）记录运动情况。使用一致性测量（互相关：XCORR）和误差（均方根偏差；以及幅度差）评估下肢关节运动学的效度。在所有关节和任务的矢状面运动学方面发现了极佳的一致性（XCORR >0.88）。在髋关节和踝关节的额状面和横断面运动学方面发现一致性变化很大。所有平面的误差都相对较高。总之，WIS系统在团队运动中能有效估计矢状面关节运动学。然而，研究人员在比较不同系统之间的绝对关节角度时应校正偏移量。
