共同层面的贡献,以减少机械劳动时,分带行走在老年人中
Russell T Johnson1, Tara Cornwell2, Ryan Novotny3
1Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL 60611, USA; Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA 900007, USA.
Journal of biomechanics
|December 9, 2024
概括
年长的成年人通过减少腿部劳动和代谢成本来适应分带跑步机行走. 这种适应主要是由脚关节工作的变化驱动的,证明了随着衰老而保持的机械节能.
科学领域:
- 生物力学 生物力学
- 人类适应的人类适应
- 老年学是一门学科.
背景情况:
- 分带跑步机适应揭示了个人如何适应新条件的步行.
- 年轻的成年人通过在更快的皮带上增加步骤长度不对称来减少代谢成本和腿部工作.
- 老龄化可能会改变联合工作分配,影响老年人适应策略.
研究的目的:
- 为了研究联合工作率和老年人的步骤长度不对称性之间的关系,在分带行走.
- 为了确定老年人是否可以在分裂皮带适应期间减少腿部工作.
- 确定哪些关节有助于老年人减少工作.
主要方法:
- 在14名老年人中,量化了关节工作率和步骤长度不对称性,他们在分带跑步机上行走.
- 分析了步骤长度不对称性和总正面关节工作之间的相关性.
- 研究了特定关节,特别是脚对工作速度变化的贡献.
主要成果:
- 步长不对称与总正值工作负相关 (p=0.01).
- 积极关节工作的变化主要是由快速皮带上的积极脚工作 (p=0.01) 驱动的.
- 减少脚关节的工作可能有助于降低代谢成本.
结论:
- 健康老龄化保留了通过分裂皮带适应步行减少机械能源成本的能力.
- 老年人可以利用跑步机的工作来减少能源消耗.
- 脚关节的工作是减少代谢成本的关键因素,在老年人时分带行走.
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