Assessment of Muscular Strength for Male and Female Backpacking Task

  • Shui Cheng Tian
  • Ying ChenEmail author
  • Kai Way Li
  • Hong Xia Li
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 820)


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.


Manual materials handling (MMH) Musculoskeletal injury Muscular fatigue MVC Subjective rating 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Shui Cheng Tian
    • 1
    • 2
  • Ying Chen
    • 1
    • 2
    Email author
  • Kai Way Li
    • 3
  • Hong Xia Li
    • 4
  1. 1.College of Safety Science and EngineeringXi’an University of Science and TechnologyXi’anChina
  2. 2.Key Laboratory of Western Mines and Hazard PreventionMinistry of Education of ChinaXi’anChina
  3. 3.Department of Industrial ManagementChung Hua UniversityHsin-ChuTaiwan
  4. 4.College of ManagementXi’an University of Science and TechnologyXi’anChina

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