A new simple local muscle recovery model and its theoretical and experimental validation.
This study was conducted to provide theoretical and experimental validation of a local muscle recovery model. Muscle recovery has been modeled in different empirical and theoretical approaches to determine work-rest allowance for musculoskeletal disorder (MSD) prevention. However, time-related parameters and individual attributes have not been sufficiently considered in conventional approaches. A new muscle recovery model was proposed by integrating time-related task parameters and individual attributes. Theoretically, this muscle recovery model was compared to other theoretical models mathematically. Experimentally, a total of 20 subjects participated in the experimental validation. Hand grip force recovery and shoulder joint strength recovery were measured after a fatiguing operation. The recovery profile was fitted by using the recovery model, and individual recovery rates were calculated as well after fitting. Good fitting values (r(2) > .8) were found for all the subjects. Significant differences in recovery rates were found among different muscle groups (p < .05). The theoretical muscle recovery model was primarily validated by characterization of the recovery process after fatiguing operation. The determined recovery rate may be useful to represent individual recovery attribute.
a Department of Industrial Engineering , Tsinghua University , P.R.China.
Liang
L
Ma
Wei
W
Zhang
Su
S
Wu
Zhanwu
Z
Zhang
D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008297:Male; D008954:Models, Biological; D008962:Models, Theoretical; D018763:Muscle Fatigue / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D020127:Recovery of Function / Q000502:physiology*; D015203:Reproducibility of Results; D012785:Shoulder Joint / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult
electromyography; muscle recovery; muscle recovery model; validation