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2019 | OriginalPaper | Chapter

Assessment of Muscular Strength for Male and Female Backpacking Task

Authors : Shui Cheng Tian, Ying Chen, Kai Way Li, Hong Xia Li

Published in: Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018)

Publisher: Springer International Publishing

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Abstract

Backpacking tasks are common. Back carrying, like many other manual materials handling (MMH) tasks, could result in muscular fatigue. Assessment of muscular strength recovery upon muscular fatigue is helpful to control musculoskeletal injuries and rest allowance management of the workplace. This research investigated back muscular fatigue for backpacking tasks of different loads via analyses of muscular strength decrease, recover, heart rate and subjective rating of physical exertion. Twelve adult participants (6 males and 6 females) were requested to carry a bag with 0%, 12.5%, and 25% of their body weights on their backs and walked on treadmill until they could no longer walk under three different speeds (2,4, and 6 km/hour) and two different ramp angles (0 and 10°). After the walk, the decrease of back muscular strength percentages (MVC) were measured in male and female subjects. In addition, the subjective rating on body fatigue was measured using the Borg RPE. It was found that back strength decreased after the carrying tasks, female subjects were more resistant to muscular fatigue than male subjects. The predictive model of RPE were been determined in Regression Equation, between the RPE score and MVC% are correlation coefficient. The RPE of results after the back-packing task were consistent with those of the muscular strength data.

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Title: Assessment of Muscular Strength for Male and Female Backpacking Task
Authors: Shui Cheng Tian
Ying Chen
Kai Way Li
Hong Xia Li
Publisher: Springer International Publishing
Book: Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018)
Print ISBN: 978-3-319-96082-1

Electronic ISBN: 978-3-319-96083-8

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-3-319-96083-8_31

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