The effects of fatigue on knee kinematics during unanticipated change of direction in adolescent girl athletes: a comparison between dominant and non-dominant legs.

IF 2 3区医学 Q3 ENGINEERING, BIOMEDICAL

Sports Biomechanics Pub Date : 2024-09-01 Epub Date: 2021-06-14 DOI:10.1080/14763141.2021.1925732

Elham Hosseini, Abdolhamid Daneshjoo, Mansour Sahebozamani, David Behm

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Abstract

This study was aimed to compare the knee kinematic parameters between dominant and non-dominant legs of adolescent female athletes during change of direction (CoD) in fatigued and unpredictable settings. Knee kinematic parameters on 49 athletes (mean± SD; age = 14.69 ± 0.14 years; mass = 49.05 ± 1.22 kg; height = 1.61 ± 0.08 m) during CoD before and after performing the Bruce protocol and also in predictable and unpredictable setting situations were collected. Kinematic data were recorded at a sampling rate of 200 Hz. The results showed that the dominant leg had significantly 18.7% more flexion (p = 0.001, η = 0.95), 7.1% less valgus (p = 0.001, η = 0.95) and 0.32% lower tibia rotation (p = 0.003, η = 0.16) compared to the non-dominant leg in predictable and pre-fatigue (p < 0.05) conditions. With unpredictable and post-fatigue conditions the dominant limb again demonstrated 17.4% (p = 0.001, η = 0.67), greater knee flexion, 6.8% (0.003,η = 0.97) lower knee valgus and 1.4% (p = 0.001, η = 0.71) less tibiarotation. In conclusion, there may be an increased risk of injury withthe non-dominant leg due to changes in kinematic parameters caused by fatigue and unpredictable CoD manoeuvres.

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青少年女子运动员在意外变向时疲劳对膝关节运动学的影响：优势腿与非优势腿的比较。

本研究旨在比较青少年女运动员在疲劳和不可预测的环境下进行变向（CoD）时优势腿和非优势腿的膝关节运动学参数。研究收集了49名运动员（平均±标清；年龄=14.69±0.14岁；体重=49.05±1.22千克；身高=1.61±0.08米）在执行布鲁斯方案前后以及在可预测和不可预测环境下进行CoD时的膝关节运动学参数。运动数据以 200 Hz 的采样率记录。结果显示，在可预测和疲劳前（p < 0.05）条件下，优势腿与非优势腿相比，屈曲明显增加 18.7%（p = 0.001，η = 0.95），外翻减少 7.1%（p = 0.001，η = 0.95），胫骨旋转减少 0.32%（p = 0.003，η = 0.16）。在不可预测和疲劳后的条件下，优势肢再次表现出 17.4% (p = 0.001, η = 0.67) 的膝关节屈曲度、6.8% (0.003,η = 0.97) 的膝关节外翻度和 1.4% (p = 0.001, η = 0.71) 的胫骨旋转度。总之，由于疲劳和不可预测的CoD动作导致运动参数的变化，非优势腿受伤的风险可能会增加。

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

Sports Biomechanics 医学-工程：生物医学

CiteScore

5.70

自引率

9.10%

发文量

135

审稿时长

>12 weeks

期刊介绍： Sports Biomechanics is the Thomson Reuters listed scientific journal of the International Society of Biomechanics in Sports (ISBS). The journal sets out to generate knowledge to improve human performance and reduce the incidence of injury, and to communicate this knowledge to scientists, coaches, clinicians, teachers, and participants. The target performance realms include not only the conventional areas of sports and exercise, but also fundamental motor skills and other highly specialized human movements such as dance (both sport and artistic). Sports Biomechanics is unique in its emphasis on a broad biomechanical spectrum of human performance including, but not limited to, technique, skill acquisition, training, strength and conditioning, exercise, coaching, teaching, equipment, modeling and simulation, measurement, and injury prevention and rehabilitation. As well as maintaining scientific rigour, there is a strong editorial emphasis on ''reader friendliness''. By emphasising the practical implications and applications of research, the journal seeks to benefit practitioners directly. Sports Biomechanics publishes papers in four sections: Original Research, Reviews, Teaching, and Methods and Theoretical Perspectives.