Correction: Pulling strength, muscular fatigue, and prediction of maximum endurance time for simulated pulling tasks

Yi, Cannan; Li, Kai Way; Tang, Fan; Zuo, Huali; Ma, Liang; Hu, Hong

doi:10.1371/journal.pone.0209882

Cited by 5 publications

(2 citation statements)

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“…Assessments of muscular fatigue for pushing and pulling tasks are essential to quantify the risk of MSDs. Pushing/pulling task-induced muscular fatigue may be assessed via developing empirical models [15][16][17] and studying the decrease of muscular strength [18], the electromyogram activities of muscles involved [19,20], the subjective responses of muscle fatigue [21], the endurance time [18,20,22], and metabolic responses [23,24] of the participants performing the tasks under specific conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Pulling is required while using this aid. Studies have been performed to investigate muscular strength decrease, perceived muscular fatigue, and maximum endurance time for simulated pallet jack pulling tasks to enhance our understanding of the developing of muscle fatigue for pallet jack pulling tasks [18,21,22]. The pulling tasks in those studies were completed without pause.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Pause Design on the Decline in Pulling Effort and the Evaluation of Perceived Effort in Pulling Tasks

Tang

et al. 2021

Applied Sciences

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Pulling is one of the manual material handling activities that could lead to work-related musculoskeletal disorders. The objectives of this study were to explore the development of muscular fatigue when performing intermittent pulling tasks and to establish models to predict the pull strength decrease due to performing the tasks. A simulated truck pulling experiment was conducted. Eleven healthy male adults participated. The participants pulled a handle with a load of 40 kg, which resulted in a pulling force of approximately 123 N. The pulling tasks lasted for 9 or 12 min with one, two, or three pauses embedded. The total time period of the embedded pauses was 3 min. The pull strength after each pull and rest was measured. Ratings of the perceived exertion on body parts after each pull were also recorded. The results showed insignificant differences regarding the development of muscular fatigue related to rest frequency. We found that the development of muscular fatigue for pulling tasks with embedded pauses was significantly slower than that for continuous pulls. The forearm had a higher CR-10 score than the other body parts indicating that the forearm was the body part suffering early muscle fatigue. An exponential model was developed to predict the pull strength of the pulling tasks with embedded pauses. This model may be used to assess the developing of muscular fatigue for pulling tasks.

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