Effects of inspiratory muscle training on physical performance during backpack carrying

Purpose: Restricting chest movement when carrying a loaded backpack reduces efficiency and increases the work of respiratory muscles. The aim present study was to investigate effects six weeks inspiratory muscle training (IMT) on strength endurance physical performance load. Methods: Twenty male (age: 32.2 ± 3.4 years) members Special Operations Unit Slovenian Army volunteered participate. experimental group (n=10) trained their muscles for against an incremental resistance with breathing apparatus. placebo performed same IMT protocol but sham resistance. Assessment subjects before after included measurements maximal expiratory pressures, heart rate measurements, ratings perceived exertion 60-min walk test 25-kg backpack. Results: After IMT, maximum pressure measured 60-minute increased significantly (p < 0.001) in by 47 13% 58 20%, respectively. Inspiratory fatigue also lower group. No changes were observed rating during walking test. In group, no significant parameters IMT.Conclusion: Six progressive improves Individuals who perform tasks that require them carry heavy extended periods time may benefit from IMT.