Cardiorespiratory safety of respiratory muscle training using NU_spiroBreathe in healthy subjects

Objectives This study investigated responses of cardiorespiratory parameters of healthy subjects from respiratory muscle training using a NU_spiroBreathe device. Methods Nine healthy female subjects with sedentary lifestyles were asked to perform respiratory muscle training using a NU_spiroBreathe device with 10 cmH2O resistance (10 repetitions/set, 3 sets). Cardiorespiratory parameters (blood pressure; pulse rate; oxygen saturation) were assessed before and during respiratory muscle training sessions and after a 30-minute recovery period. The data were analyzed using the k-related sample Friedman test. Results There were no significant changes in cardiorespiratory parameters before, during or after a 30-minutes recovery period from respiratory muscle training using NU_spiroBreathe device (p > 0.05). Conclusions Respiratory muscle training using an NU_spiroBreathe device does not change cardio-respiratory parameters and is safe for use by healthy subjects. Chiang Mai Medical Journal 2021; 60(1):53-62. doi 10.12982/CMUMEDJ.2021.05