不同负重、坡度和速度背包任务下的背部肌肉疲劳评估
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X928.03

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国家自然科学基金(51874237);国家自然科学基金联合基金重点支持项目(U1904210);国家社会科学(20XGL025).


Assessment of back muscular fatigue with varying load, speed and gradient in a backpacking task
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    摘要:

    为评估不同条件下男、女性背包作业过程中的肌肉疲劳状况。设计男、女性背包徒步行走试验范式,分别测量任务前、后参与者背部肌肉肌力的最大随意收缩力(fMVC)和f’MVC、心率(Rh)、最大耐受时间(Tme),并给予博格体力消耗的主观疲劳感知评分(Erp)。12名大学生参与者(6名男性和6名女性)被要求背着装有哑铃(重量分别为0,自身体重的12.5%和25%)的背包,以三种不同的速度(2、4和6km/h)和两种不同的坡度(0和10°)在跑步机上行走,直至因劳累而无法继续为止。结果发现:背包任务后,背部肌力(Sb)值下降,主观疲劳评分(Erp)值增大;相比女性,男性肌力下降快,抗疲劳性强,但女性的疲劳感知能力较男性强。研究助力提升从业人员的作业设计和生活安排合理化,从而预防肌肉骨骼疾病(MSDs)风险。

    Abstract:

    To discuss the muscle fatigue of men and women in backpacking task under different conditions. An experimental paradigm for male and female on backpac walking task, fMVC and f’MVC of the back muscles, Rh, Tme and Borg Erp were measured before and after the task. Twelve adult participants (6 males and 6 females) were requested to carry a bag with 0%, 12.5%, and 25% of their body weights dumbbells on their backs. Then walked on the treadmill until they could no longer walk at three different speeds (2, 4, and 6 km/h) and two different inclinations (0 and 10°). It was found that back strengths decreased after the carrying tasks, the Erp results were gradually increased after the backpacking task; The fMVC of Males were decreased quickly, and Males were more resistant to muscular fatigue than Males, while Females were easier to perceive fatigue. It is expected to provide targeted suggestions on the job design and life arrangement for the practitioners, so as to prevent the risk of musculoskeletal diseases (MSDs)

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陈盈,田水承,李开伟,等. 不同负重、坡度和速度背包任务下的背部肌肉疲劳评估[J]. 科学技术与工程, 2022, 22(16): 6774-6779.
Chen Ying, Tian Shuicheng, Li Kaiwei, et al. Assessment of back muscular fatigue with varying load, speed and gradient in a backpacking task[J]. Science Technology and Engineering,2022,22(16):6774-6779.

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历史
  • 收稿日期:2021-06-23
  • 最后修改日期:2022-02-22
  • 录用日期:2022-01-13
  • 在线发布日期: 2022-06-22
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