Establishment of a Human Comfort Evaluation Method Based on Musculoskeletal Activity
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Abstract:
Objective To establish and validate a human comfort evaluation method based on musculoskeletal activity in biomechanics. Methods Firstly, the limitations of current biomechanical-based comfort evaluation methods were analyzed. Secondly, a new evaluation method based on musculoskeletal activity was proposed, which considered? the influence of muscle and joint on comfort, resulting in a comfort index. Finally, the firefighter hose-rolling task was selected for verification. Results The comfort index derived from the improved musculoskeletal activity-based evaluation method was 0.74, which was lower than the comfort index of 0.82 obtained from the comfort based on muscle activity. The verification results align with the theoretical analysis. A questionnaire survey conducted on 43 firefighters showed that the subjective assessments gathered are consistent with the verification outcomes, further confirming the conclusion that the former method is more comprehensive and accurate. Conclusions The comfort evaluation method that integrated both muscle and joint conditions better reflects the actual conditions of the human body. Compared to methods that focus solely on muscle, this approach was more effective at revealing potential biomechanical risks and had greater practical significance.
