TY - JOUR T1 - The effects of inspiratory resistive loading on respiratory and locomotors muscle oxygenation during high intensity exercise in female soccer players JF - European Respiratory Journal JO - Eur Respir J DO - 10.1183/13993003.congress-2016.PA697 VL - 48 IS - suppl 60 SP - PA697 AU - Flavia Cristina Rossi Caruso AU - Bruno Archiza AU - Daniela Kuguimoto Andaku Olenscki AU - Renata Trimer AU - Stela Mattiello AU - Cleiton Libardi AU - André Capaldo Amaral AU - José Carlos Bonjorno-Junior AU - Claudio Ricardo de Oliveira AU - Shane A. Phillips AU - Ross Arena AU - Jose Alberto Neder AU - Audrey Borghi-Silva Y1 - 2016/09/01 UR - http://erj.ersjournals.com/content/48/suppl_60/PA697.abstract N2 - BACKGROUND: Female athletes are more susceptible to expiratory flow limitation and arterial hypoxemia during high-intensity exercise compared to men, which might induce to diaphragmatic fatigue with negative consequences to muscle blood flow supply to respiratory and peripheral muscles.AIM: To assess the impact of inspiratory resistive loading (IRV) on respiratory and peripheral muscle oxygenation in female soccer players (FSP).METHODS: Twenty elite FSP were recruited. After an incremental cardiopulmonary exercise test (CPX) on a treadmill, they performed (on a different day) two high-intensity constant velocity testing to the limit of the tolerance-Tlim (100% of peak CPX). During these bouts they breathed through a resistive load of 15cmH2O or sham. Peripheral and respiratory muscle oxygenation by near-infrared spectroscopy, breath-by-breath ventilatory and metabolic variables and blood lactate ([La+]) were measured.RESULTS: IRV was associated with significant increases in [La+]/Tlim and lower Tlim compared to sham (224.4±54.2 vs 77.7±19.7, P<0.05). Respiratory and peripheral muscle deoxygenation were higher during IRV than sham (4.2 ± 3.9 vs 5.6±3.2 and 8.5±4.2 vs 9.7±4.9, p<0.05).CONCLUSION: IRV decreases peripheral muscle oxygenation (likely secondary to impaired blood flow) and exercise performance in FSP. Respiratory muscle training may prove helpful to enhance exercise performance in these athletes.Financial Support; CNPq: 487385/2013-6 and 400442/2014-0. ER -