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Respiratory muscles training with isocapnic hyperpnoea (HY) method improves ventilatory parameters and exercise capacity.

By L. Pomidori, S. Uliari, C. Coletto, G. Mandolesi, G. Grazzi, F. Manfredini, G. Mazzoni and A. Cogo

Abstract

Introduction: Recent evidences suggest that respiratory muscles training improves the exercise capacity. Aim: To evaluate the efficacy of respiratory muscles training with HY (Spirotiger®) on respiratory parameters and exercise capacity. Materials and Methods: 12 Females: Group A: 6 (age 24 ±0,8) with HY training (20 min/day x 5/weeks) for 1 month; Group B control: 6 (age 23 ±2,6). Respiratory function tests [vital capacity (VC), forced expiratory volume in 1st second (FEV1), maximum voluntary ventilation (MVV), maximum inspiratory pressure (MIP)]; Incremental maximal cycle ergometer test: [watt/min, oxygen consumption (VO2), heart rate (HR), dyspnea scale (Borg)] before (T0 ) and after training (T1 ). The daily physical activity was monitored by Armband at T0 and T1: unchanged.\ud Results:\ud Group A (table 1).\ud \ud \ud Respiratory Function:\ud VC (L) FEV1 (L/sec) MVV(L/min) MIP(kPa)\ud T0 3,87±0,32 3,52±0,23 128 ±23 7,16±1,03\ud T1 4,15±0,35* 3,47±0,27 139±13* 8,74±1,75*\ud Exercise test:\ud Wattmax Watt VAT VO2max (mL/min) VO2 VAT (mL/min)\ud T0 191±17,5 111±8,9 2240±137 1456 ±126\ud T1 200±18,4* 116±10,8* 2401±278 1533±107\ud VAT= ventilatory anaerobic threshold (V-Slope method)\ud \ud \ud During the test at T1 with respect to T0, HR and Borg scale were always significantly lower, while the tidal volume (TD) was always significantly higher. Group B: no significant change. Statistical analysis by T-Test and Test ANOVA: *=p<0,05\ud Conclusions: Respiratory muscles training with HY improves respiratory function parameters and exercise power expressed at VAT and at peak

Topics: exercise, training, respiratory muscles.
Year: 2009
OAI identifier: oai:iris.unife.it:11392/1379616
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