不同运动界面对业余跑步者的下肢生物力学分析

The Effect of Running Surface on the Lower Limb Biomechanical

目的:通过对比水泥路面和人造草坪两种不同的运动表面,分析不同运动界面对业余跑步者的下肢生物力学影响。方法:选取10名健康男性大学生,近半年内无任何下肢损伤,采用8摄像头三维运动捕捉系统和测力台同步采集受试者在3.3m/s±0.2m/s速度下的下肢运动学和动力学参数。结果显示:在水泥路面和人造草坪地面上,下肢三维角度、力矩、功率和地面反作用力均发生显著性差异。水泥界面跑步支撑期的踝关节内外翻活动范围(P=0.035)、踝关节最大跖屈功率(P=0.001)和踝关节最大背屈功率(P=0.002)明显大于人造草坪地面;踝关节最大背屈角度(P=0.004)、踝关节最大内翻角度(P=0.004)、踝关节最大跖屈力矩(P=0.0036)和膝关节最大屈曲角度(P=0.033)在水泥路面跑步时明显小于人造草坪;膝关节内外旋活动范围(P=0.008)、膝关节最大外旋角度(P=0.019)、膝关节最大屈曲力矩(P=0.001)、膝关节最大伸展力矩(P=0.001)在水泥界面跑步时明显大于人造草坪地面;水泥路面跑步支撑期内的垂直负荷增长率(P=0.024)明显大于人造草坪地面。

Objective:To analyze the impact of different sports surfaces on the biomechanics of the lower limbs of amateur runners by comparing two different sports surfaces,cement pavement,and artificial turf.Methods:10healthy male college students were selected without lower extremity injury in the past six months.The 8-camera 3Dmotion capture system and force platform were used to simultaneously collect the subjects’lower extremity kinematics and dynamics at 3.3m/s±0.2m/s.Kinetic parameters.The results showed significant differences in the three-dimensional angle,moment,power,and ground reaction force of the lower limbs on the cement pavement and the artificial turf ground.The ankle joint varus range of motion(P=0.035),the maximum ankle plantarflexion power(P=0.001)and the ankle joint maximum dorsiflexion power(P=0.002)during the running support period of the cement interface were significantly greater than those on the artificial turf ground;The flexion angle(P=0.004),the maximum ankle varus angle(P=0.004),the maximum ankle plantarflexion moment(P=0.0036)and the maximum knee flexion angle(P=0.033)were significantly smaller than those on the artificial turf when running on the cement road.;range of motion of knee joint internal and external rotation(P=0.008),maximum knee joint external rotation angle(P=0.019),maximum knee joint flexion moment(P=0.001),knee joint maximum extension moment(P=0.001)running on cement interface The vertical load growth rate(P=0.024)of the cement pavement during the running support period was significantly larger than that of the artificial turf ground.