Graduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.
Human Movement Biomechanics Laboratory, University of Ottawa, Ottawa, Canada.
J Sports Sci. 2022 Sep;40(17):1964-1972. doi: 10.1080/02640414.2022.2123506. Epub 2022 Sep 14.
This study investigated the effect of a handball-specific fatigue protocol on hip and knee kinematics. Twenty female handball athletes performed three trials of the single-leg landing (SLL), sidestep cutting manoeuvre (SCM), and drop vertical jump (DVJ) before and after the fatigue protocol. Knee and hip angle waveforms were compared using statistical parametric mapping (p < 0.05). During the SLL, the fatigue increased hip adduction (4-7% cycle) and knee abduction (4-9% and 25-27%). For the SCM, hip flexion was reduced under fatigue during 14-29% and 44-68% of the cycle. Similarly, the knee flexion decreased between 7-36% and 53-73%. Besides, during the fatigue state, the athletes reduced the hip abduction between 0-11% of the cycle and increased the knee abduction between 20-23%. During the DVJ task, when fatigued, the hip flexion decreased between 19-44% of the cycle and the knee flexion between 1-16% and 18-77%. The fatigue protocol altered the lower limb kinematics, decreasing knee and hip flexions during the SCM and DVJ and increasing the knee valgus during both single-leg landing tasks.
本研究调查了特定于手球的疲劳方案对髋关节和膝关节运动学的影响。 20 名女性手球运动员在疲劳方案前后进行了三次单腿着陆（SLL）、侧步切割动作（SCM）和垂直跳落（DVJ）测试。使用统计参数映射（p <0.05）比较了膝关节和髋关节角度的波形。在 SLL 期间，疲劳增加了髋关节内收（4-7%的周期）和膝关节外展（4-9%和 25-27%）。对于 SCM，在 14-29%和 44-68%的周期中，疲劳时髋关节屈曲减少。同样，膝关节屈曲在 7-36%和 53-73%之间减少。此外，在疲劳状态下，运动员减少了 0-11%周期内的髋关节外展，并增加了 20-23%的膝关节外展。在 DVJ 任务中，当疲劳时，髋关节屈曲在 19-44%的周期内减少，膝关节屈曲在 1-16%和 18-77%的周期内减少。疲劳方案改变了下肢运动学，减少了 SCM 和 DVJ 中的膝关节和髋关节屈曲，并增加了两个单腿着陆任务中的膝关节外翻。
