Investigating the landing kinetics factors and preparatory knee muscle activation in female handball players with and without dynamic knee valgus while performing single leg landing

IF 0.8 Q4 HEALTH CARE SCIENCES & SERVICES

Biomedical Human Kinetics Pub Date : 2021-01-01 DOI:10.2478/bhk-2021-0019

Reyhaneh Mansouri, F. Bahrami, R. Rajabi, H. Minoonejad, K. Kaczmarczyk

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引用次数: 4

Abstract

Abstract Study aim: to examine the differences in landing kinetics factors (LKF) to assess the whole body stability and preparatory muscle activation (PMA) in female handball players with and without dynamic knee valgus. Material and methods: Twenty-four professional female handball players (11 with (DKV) and 13 without (Control) dynamic knee valgus) were asked to perform three trials of a single-leg landing. LKF and surface EMG were recorded. Initial contact knee valgus angle (IC KVA), vertical ground reaction force (vGRF), confidence ellipse area of center of pressure (CEA), time to stability (TTS) and EMG from 100 ms prior to ground contact were used in the data analyses. Results: Multivariate analyzing of LKF showed significant differences between two groups (p = 0.001) while for PMA the result was not significant (p = 0.361). Conclusion: Altered landing mechanism considered as a predictor of non-contact knee injuries such as ACL rupture. Therefore according to current study it seems important to focus on reducing valgus angle in designing injury prevention program.

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研究女手球运动员单腿着地时伴有和不伴有动态膝外翻的着地动力学因素及预备膝肌激活

摘要:研究目的:探讨有无动态膝外翻的女子手球运动员着陆动力学因子(LKF)的差异，以评估其全身稳定性和预备肌激活(PMA)。材料与方法:选取24名职业女子手球运动员(11名有(DKV)， 13名无(Control)动态膝外翻)进行3次单腿落地试验。记录LKF和表面肌电图。数据分析采用初始接触膝外翻角(IC KVA)、垂直地面反力(vGRF)、压力中心置信椭圆面积(CEA)、稳定时间(TTS)和接触地面前100 ms的肌电图。结果:多因素分析显示两组间LKF差异有统计学意义(p = 0.001)， PMA差异无统计学意义(p = 0.361)。结论:改变的着陆机制被认为是非接触性膝关节损伤(如前交叉韧带破裂)的预测因素。因此，从目前的研究情况来看，在设计损伤预防方案时应注重减小外翻角。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biomedical Human Kinetics HEALTH CARE SCIENCES & SERVICES-

CiteScore

1.50

自引率

12.50%

发文量

审稿时长

15 weeks

期刊介绍： The leading idea is the health-directed quality of life. The journal thus covers many biomedical areas related to physical activity, e.g. physiology, biochemistry, biomechanics, anthropology, medical issues associated with physical activities, physical and motor development, psychological and sociological issues associated with physical activities, rehabilitation, health-related sport issues and fitness, etc.