单纯的胫骨加速度并不能有效地替代测量胫骨负荷对步长操纵的反应。

IF 9.7 1区 医学 Q1 HOSPITALITY, LEISURE, SPORT & TOURISM Journal of Sport and Health Science Pub Date : 2024-09-03 DOI:10.1016/j.jshs.2024.100978
Jean Tu, Olivia L Bruce, W Brent Edwards
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引用次数: 0

摘要

目的:本研究旨在评估在平地跑步过程中,胫骨加速度峰值和踝关节接触力峰值与步长调节之间的关系:方法:27 名身体活跃的参与者在 5 种步长条件下(首选、首选步长的 ±5% 和 ±10%)分别以首选速度进行了 10 次试验。直接测量运动捕捉、力平台和胫骨加速度数据,并使用基于反动力学的静态优化程序估算踝关节接触力:一般来说,轴向胫骨加速度峰值(p < 0.001)以及轴向(p < 0.001)和结果(p < 0.001)踝关节接触力随着步长的增加而增加。如果对每种步长条件下的 10 步进行平均,则可观察到轴向加速度峰值与关节接触力(r = 0.49)以及结果加速度峰值与关节接触力(r = 0.51)之间存在中等程度的正相关。然而,37% 的参与者之间没有关系或呈负相关。在逐级检查时,不同参与者的轴向加速度峰值与关节接触力(r = 0.12)以及结果加速度峰值与踝关节接触力(r = 0.18)之间仅存在微弱的相关性:这些结果表明,在平地跑步过程中,胫骨加速度不应作为踝关节接触力的代用指标。10步平均胫骨加速度指标可能对某些跑步者有用,但需要进行初步实验室评估以确定这些人。
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Tibial acceleration alone is not a valid surrogate measure of tibial load in response to stride length manipulation.

Purpose: This study aimed to evaluate the relationship between peak tibial acceleration and peak ankle joint contact forces in response to stride length manipulation during level-ground running.

Methods: Twenty-seven physically active participants ran 10 trials at preferred speed in each of 5 stride length conditions: preferred, ±5 %, and ±10 % of preferred stride length. Motion capture, force platform, and tibial acceleration data were directly measured, and ankle joint contact forces were estimated using an inverse-dynamics-based static optimization routine.

Results: In general, peak axial tibial accelerations (p < 0.001) as well as axial (p < 0.001) and resultant (p < 0.001) ankle joint contact forces increased with stride length. When averaged within the 10 strides of each stride condition, moderate positive correlations were observed between peak axial acceleration and joint contact force (r = 0.49) as well as peak resultant acceleration and joint contact force (r = 0.51). However, 37% of participants illustrated either no relationship or negative correlations. Only weak correlations across participants existed between peak axial acceleration and joint contact force (r = 0.12) as well as peak resultant acceleration and ankle joint contact force (r = 0.18) when examined on a step-by-step basis.

Conclusion: These results suggest that tibial acceleration should not be used as a surrogate for ankle joint contact force on a step-by-step basis in response to stride length manipulations during level-ground running. A 10-step averaged tibial acceleration metric may be useful for some runners, but an initial laboratory assessment would be required to identify these individuals.

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来源期刊
CiteScore
18.30
自引率
1.70%
发文量
101
审稿时长
22 weeks
期刊介绍: The Journal of Sport and Health Science (JSHS) is an international, multidisciplinary journal that aims to advance the fields of sport, exercise, physical activity, and health sciences. Published by Elsevier B.V. on behalf of Shanghai University of Sport, JSHS is dedicated to promoting original and impactful research, as well as topical reviews, editorials, opinions, and commentary papers. With a focus on physical and mental health, injury and disease prevention, traditional Chinese exercise, and human performance, JSHS offers a platform for scholars and researchers to share their findings and contribute to the advancement of these fields. Our journal is peer-reviewed, ensuring that all published works meet the highest academic standards. Supported by a carefully selected international editorial board, JSHS upholds impeccable integrity and provides an efficient publication platform. We invite submissions from scholars and researchers worldwide, and we are committed to disseminating insightful and influential research in the field of sport and health science.
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