Norheim Kristoffer L, Samani Afshin, Madeleine Pascal
Sport Sciences - Performance and Technology, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark; Department of Occupational and Environmental Medicine, Danish Ramazzini Centre, Aalborg University Hospital, Aalborg, Denmark.
Sport Sciences - Performance and Technology, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.
Appl Ergon. 2021 Jan;90:103157. doi: 10.1016/j.apergo.2020.103157. Epub 2020 Sep 12.
The aim of this study was to investigate the effects of age on response time and accuracy during a hammering task. Older male workers aged 51-69 years (older group: OG, n = 23) and younger male reference individuals aged 25-36 years (younger group: YG, n = 16) performed the experiment. Response time, accuracy, and 3D shoulder/arm kinematics were acquired using motion capture. The effects of age were investigated using linear mixed model analysis. Response times were significantly longer for OG compared with YG (P < 0.001) while no marked differences in the accuracy was observed (P = 0.729). OG showed less hammer displacement and smaller range of motion in the shoulder. Although older workers seemed to use a less biomechanical demanding motor strategy, their response times during hammering were about twice that of younger individuals.
本研究的目的是调查年龄对锤击任务中反应时间和准确性的影响。51至69岁的老年男性工人（老年组：OG，n = 23）和25至36岁的年轻男性参考个体（年轻组：YG，n = 16）参与了该实验。使用动作捕捉技术获取反应时间、准确性和三维肩部/手臂运动学数据。采用线性混合模型分析研究年龄的影响。与YG相比，OG的反应时间显著更长（P < 0.001），而准确性方面未观察到明显差异（P = 0.729）。OG的锤子位移较小，肩部运动范围也较小。尽管老年工人似乎采用了生物力学要求较低的运动策略，但他们锤击时的反应时间约为年轻人的两倍。
