Biomechanical responses to incremental backpack loading during stair ascent in male adolescents.

IF 2.8 3区工程技术 Q3 ENGINEERING, INDUSTRIAL

Ergonomics Pub Date : 2026-10-20 DOI:10.1080/00140139.2026.2746687

Chuangui Mao, Zijun Lu, Xinxin Zhang, Yuliang Sun

引用次数: 0

Abstract

Backpack carriage is common among adolescents, yet its biomechanical responses during stair ascent remain unclear. This study investigated the effects of incremental backpack loads (0, 10, 15, and 20% body weight) on stair-ascent biomechanics in 16 male adolescents. Three-dimensional motion analysis, kinetics, surface electromyography, and dynamic stability measures were assessed using SPM1D. Increasing loads significantly altered AP-MOS, COM-COP inclination angle, vertical GRF, lower-limb joint mechanics, and muscle activation, while traditional spatiotemporal parameters remained unchanged. Load-related adaptations occurred during single-support, double-support, and swing phases, involving altered activation of key lower-limb muscles. These findings suggest that adolescents maintain external stair-ascent performance through internal biomechanical adjustments under increased backpack loads.

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男性青少年上楼梯时背包负重增加的生物力学反应。

背包行走在青少年中很常见，但其在爬楼梯时的生物力学反应尚不清楚。本研究调查了16名男性青少年增加背包负荷（0、10、15和20%体重）对爬楼梯生物力学的影响。使用SPM1D评估三维运动分析、动力学、表面肌电图和动态稳定性措施。增加载荷显著改变AP-MOS、COM-COP倾角、垂直GRF、下肢关节力学和肌肉激活，而传统的时空参数保持不变。负荷相关的适应发生在单支撑、双支撑和摇摆阶段，涉及下肢关键肌肉激活的改变。这些研究结果表明，在背包负荷增加的情况下，青少年通过内部生物力学调整来维持外部上楼性能。

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

Ergonomics 工程技术-工程：工业

CiteScore

4.60

自引率

12.50%

发文量

147

审稿时长

6 months

期刊介绍： Ergonomics, also known as human factors, is the scientific discipline that seeks to understand and improve human interactions with products, equipment, environments and systems. Drawing upon human biology, psychology, engineering and design, Ergonomics aims to develop and apply knowledge and techniques to optimise system performance, whilst protecting the health, safety and well-being of individuals involved. The attention of ergonomics extends across work, leisure and other aspects of our daily lives. The journal Ergonomics is an international refereed publication, with a 60 year tradition of disseminating high quality research. Original submissions, both theoretical and applied, are invited from across the subject, including physical, cognitive, organisational and environmental ergonomics. Papers reporting the findings of research from cognate disciplines are also welcome, where these contribute to understanding equipment, tasks, jobs, systems and environments and the corresponding needs, abilities and limitations of people. All published research articles in this journal have undergone rigorous peer review, based on initial editor screening and anonymous refereeing by independent expert referees.