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Respiratory muscle endurance training: effect on normoxic and hypoxic exercise performance.
- Source :
- European Journal of Applied Physiology; Mar2010, Vol. 108 Issue 4, p759-769, 11p, 1 Diagram, 4 Charts, 2 Graphs
- Publication Year :
- 2010
-
Abstract
- The aim of this study was to investigate the effect of respiratory muscle endurance training on endurance exercise performance in normoxic and hypoxic conditions. Eighteen healthy males were stratified for age and aerobic capacity; and randomly assigned either to the respiratory muscle endurance training (RMT = 9) or to the control training group (CON = 9). Both groups trained on a cycle-ergometer 1 h day(-1), 5 days per week for a period of 4 weeks at an intensity corresponding to 50% of peak power output. Additionally, the RMT group performed a 30-min specific endurance training of respiratory muscles (isocapnic hyperpnea) prior to the cycle ergometry. Pre, Mid, Post and 10 days after the end of training period, subjects conducted pulmonary function tests (PFTs), maximal aerobic tests in normoxia (VO(2max)NOR), and in hypoxia (VO(2max)HYPO; F(I)O(2) = 0.12); and constant-load tests at 80% of VO(2max)NOR in normoxia (CLT(NOR)), and in hypoxia (CLTHYPO). Both groups enhanced VO(2max)NOR (CON: +13.5%; RMT: +13.4%), but only the RMT group improved VO(2max)HYPO Post training (CON: -6.5%; RMT: +14.2%). Post training, the CON group increased peak power output, whereas the RMT group had higher values of maximum ventilation. Both groups increased CLT(NOR) duration (CON: +79.9%; RMT: +116.6%), but only the RMT group maintained a significantly higher CLT(NOR) 10 days after training (CON: +56.7%; RMT: +91.3%). CLT(HYPO) remained unchanged in both groups. Therefore, the respiratory muscle endurance training combined with cycle ergometer training enhanced aerobic capacity in hypoxia above the control values, but did not in normoxia. Moreover, no additional effect was obtained during constant-load exercise. [ABSTRACT FROM AUTHOR]
- Subjects :
- EXERCISE
CEREBRAL anoxia
NONINVASIVE diagnostic tests
PATHOLOGICAL physiology
PULMONARY function tests
ALGORITHMS
ATHLETIC ability
BREATHING exercises
COMPARATIVE studies
EXERCISE tests
HEART beat
RESEARCH methodology
MEDICAL cooperation
PHYSICAL fitness
RESEARCH
EVALUATION research
RANDOMIZED controlled trials
OXYGEN consumption
Subjects
Details
- Language :
- English
- ISSN :
- 14396319
- Volume :
- 108
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- European Journal of Applied Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 48058118
- Full Text :
- https://doi.org/10.1007/s00421-009-1286-0