The effect of sets and repetitions of the spirometer by flow in cardiorespiratory parameters

Efeito das séries e repetições do inspirômetro a fluxo nos parâmetros cardiorrespiratórios

Introduction

The incentive spirometer helps pulmonary ventilation and the cardiorespiratory changes of its use are controversial.

Objective

To evaluate the effect of sets and repetitions on cardiorespiratory parameters using a spirometer alinear flow (SAF). The sample group consisted of 50 young people, healthy and sedentary. The evaluated parameters were: systolic blood pressure (SBP), diastolic (DBP), heart rate (HR), respiratory rate (RR), oxygen saturation (SaO₂), minute volume (VE), tidal volume (VT), vital capacity (VC), maximal inspiratory pressure (Pi_max), maximal expiratory pressure (Pe_max), and peak expiratory flow (PEF). The moments of study were: initial evaluations (M1); 3 sets of 10 repetitions using SAF (M2); 3 sets of 15 repetitions using SAF (M3); and final evaluation (M4). Statistical analysis was made by t test, ANOVA and Tukey test (p < 0.05).

Results

SBP and HR decreased in M2 after the 2^nd set. In the 3^rd set, SBP and RR decreased. Comparing the initial and final variables in M2, SBP and RR decreased, and Pe_max increased. After 1^st set in M3, SBP and SaO₂ decreased. The 2^nd set: SBP, HR, RR, and SaO₂ decreased. After the 3^rd set: SBP, HR, SaO₂, and RR decreased. Comparing the initial and final variables in M3, SBP, HR, RR decreased, and Pi_max and Pe_max increased. Comparing M4 to M1, Pi_max, Pe_max, and VC increased, and RR decreased.

Conclusion

There are changes in cardiorespiratory parameters after the use of a spirometer alinear flow, especially in the sets with more repetitions.

Physiotherapy; Pulmonology; Respiratory therapy