Study on the Effect of Carrying Air Respirators on Muscle Fatigue of Volunteer Firefighters
In order to understand the impact of carrying an air respirator on the muscle fatigue of volunteer firefighters,run-ning tests were conducted on them using both bare hands and carrying air respirators.The surface electromyography(sEMG)and pressure data were measured for a total of 60 participants.The subjective fatigue perception of the participants was also taken into account during the analysis.The results indicate that the fatigue levels of the bilateral biceps femoris muscles,bi-lateral gastrocnemius muscles,and bilateral tibialis anterior muscles were most affected by wearing the air respirator.Carrying an air respirator can cause pain in the shoulders and waist,requiring longer recovery time.The fatigue of the left erector spi-nae muscle,left and right gastrocnemius muscle,and right tibialis anterior muscle is most correlated with the subjective fa-tigue perception of volunteer firefighters.