Subjective Responses to Interval and Continuous Exercise in Adults With Exercise-Induced Bronchoconstriction.

BACKGROUND

Exercise triggers asthma symptoms among adults with exercise induced bronchoconstriction (EIBC). This may lead to lower physical activity levels among this population. The purpose of this study was to assess perceived exertion (RPE), perceived breathlessness (RPD), affect (FS), and physical activity enjoyment during and following an acute bout of high intensity interval exercise (HIIE), moderate intensity interval (MIIE) and moderate intensity continuous exercise (MICE) in adults with EIBC.

METHODS

RPD, RPE, and FS were assessed each minute during the sessions and enjoyment was assessed following each session (n = 11).

RESULTS

RPE was lower during MIIE compared with MICE (P = .006). RPD was lowest during MIIE but was not different between HIIE and MICE. Affect was lower in MICE than HIIE in the last minute of exercise (P = .003) and overall was greatest during the MIIE (P = .022; P = .018). Enjoyment scores were similar between protocols.

CONCLUSIONS

Interval exercise is associated with lower ratings of perceived exertion and dyspnea, an increase in in-task affect, and similar physical activity enjoyment when compared with continuous exercise.