鞋纵向弯曲刚度对老年跑步者跑步经济性和生物力学的影响。

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Accounts of Chemical Research Pub Date : 2023-12-01 Epub Date: 2022-09-12 DOI:10.1080/02701367.2022.2114589
Richard T Beltran, Douglas W Powell, Daniel Greenwood, Max R Paquette
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引用次数: 0

摘要

目的:研究鞋的纵向弯曲刚度对老年跑步者后脚撞击的跑步经济性和生物力学的影响。方法:9名60岁以上的跑步者在低(4.4±1.8 N·m-1)、中(5.7±1.7 N·m-1)和高(6.4±1.6 N·m-1)三种鞋型条件下,以自己喜欢的跑步速度完成两组跑步。测试顺序随机化,使用镜像协议(即,a,B,C,C,B, a)。同时收集过期气体、下肢运动学和地面反作用力,并计算下肢关节动力学、跑步经济性(即VO2)、腿部刚度和时空变量。结果:不同刚度条件下运行经济性无显著差异(p = 0.60, p = 0.53[质量调整])。较大的鞋履刚度减少了步长(p = 0.046),增加了峰值垂直地面反作用力(p = 0.019),但没有改变峰值踝关节跖屈肌扭矩(p = 0.65)、峰值踝关节正功(p = 0.48)、踝关节正功(p = 0.86)、推进力(p = 0.081)和腿部刚度(p = 0.46)。与低(p = 0.04)和高(p = 0.03)硬度相比,中等硬度的鞋子产生了更大的峰值负膝关节力。结论:这些新发现表明,使用平面碳纤维插入物增加鞋类纵向弯曲刚度并不能提高跑步经济性,并且通常不会改变60岁以上后脚着地跑步者的下肢关节力学。未来的研究应该调查其他鞋类特征(例如,中底材料,板块位置和鞋底曲率)如何影响该人群的经济和生物力学。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Influence of Footwear Longitudinal Bending Stiffness on Running Economy and Biomechanics in Older Runners.

Purpose: This study assessed the effects of footwear longitudinal bending stiffness on running economy and biomechanics of rearfoot striking older runners. Methods: Nine runners over 60 years of age completed two running bouts at their preferred running pace in each of three footwear conditions: low (4.4 ± 1.8 N·m-1), moderate (5.7 ± 1.7 N·m-1), and high (6.4 ± 1.6 N·m-1) bending stiffness. Testing order was randomized and a mirror protocol was used (i.e., A,B,C,C,B,A). Expired gases, lower limb kinematics, and ground reaction forces were collected simultaneously and lower limb joint kinetics, running economy (i.e., VO2), leg stiffness, and spatio-temporal variables were calculated. Results: Running economy was not different among stiffness conditions (p = 0.60, p = 0.53 [mass adjusted]). Greater footwear stiffness reduced step length (p = 0.046) and increased peak vertical ground reaction force (p = 0.019) but did not change peak ankle plantarflexor torque (p = 0.65), peak positive ankle power (p = 0.48), ankle positive work (p = 0.86), propulsive force (p = 0.081), and leg stiffness (p = 0.46). Moderate footwear stiffness yielded greater peak negative knee power compared to low (p = 0.04) and high (p = 0.03) stiffness. Conclusions: These novel findings demonstrate that increasing footwear longitudinal bending stiffness using flat carbon fiber inserts does not improve running economy and generally does not alter lower limb joint mechanics of rearfoot strike runners over 60 years. Future studies should investigate how other footwear characteristics (e.g., midsole material, plate location, and sole curvature) influence economy and biomechanics in this population.

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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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