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A randomized controlled clinical trial of the effects of respiratory muscle training on improving exercise tolerance in women's soccer players

Grant number: 14/10145-9
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): September 01, 2014
Effective date (End): October 31, 2018
Field of knowledge:Health Sciences - Physiotherapy and Occupational Therapy
Principal researcher:Audrey Borghi e Silva
Grantee:Bruno Archiza
Home Institution: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated scholarship(s):16/08999-5 - Diaphragm fatigue in young adult males and its characterization during exercise, BE.EP.DD

Abstract

Introduction: the respiratory muscle training (RMT) is a type of exercise that uses a device which resists the flow of ventilation in order to provide strength and resistance to respiratory muscles. It is reported that RMT reduces respiratory muscle fatigue, blood lactate concentration during exercise and act reflexively to greater redirection of blood flow to peripheral muscles, reducing mechanical and ventilatory changes during exercise in athletes. However, no previous study seems to have assessed the effects of RMT on peripheral and respiratory muscle oxygenation in the population of women soccer players, which is marked by high intensity sprints and are characterized by the involvement of large magnitude of muscle strength and power. Main objective: to analyze the impact of RMT in tolerance to high-intensity exercise in women soccer players and their impact on blood oxygenation of peripheral and respiratory muscles. Material and methods: A controlled clinical trial, randomized, double blind, where 20 players of elite soccer will be selected. These women will be submitted to an incremental cardiopulmonary exercise test on a treadmill. Thereafter, they will perform a test with constant speed, until the time limit of tolerance (80% of VO2max). In this test shall be determined: (1) peripheral muscle oxygenation (vastus lateralis) and breathing (intercostal muscles) through the near-infrared spectroscopy (NIRS), (2) cardiac output (CO) by transthoracic impedance; (3) the oxyhemoglobin saturation by pulse oximetry and, (4) the changes of arterial blood lactate. Also the test of repeated sprints (TRS) will be performed. After 6 weeks of RMT at 50% of maximal inspiratory pressure (MIP), 2 sets of 30 repetitions, 5 times a week, the volunteers will be reassessed. Main hypothesis: After 6 weeks of RMT such responses would be opposite, with marked improvement in exercise tolerance and increased respiratory and peripheral muscle oxygenation. Relevance of the study: rationale of the role of RMT in the conditioning of respiratory muscles and its value as a strategy to help women who play high performance intermittent sports. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ARCHIZA, BRUNO; ANDAKU, DANIELA KUGUIMOTO; ROSSI CARUSO, FLAVIA CRISTINA; BONJORNO JR, JOSE CARLOS; DE OLIVEIRA, CLAUDIO RICARDO; RICCI, PAULA ANGELICA; DO AMARAL, ANDRE CAPALDO; MATTIELLO, STELA MARCIA; LIBARDI, CLEITON AUGUSTO; PHILLIPS, SHANE A.; ARENA, ROSS; BORGHI-SILVA, AUDREY. Effects of inspiratory muscle training in professional women football players: a randomized sham-controlled trial. JOURNAL OF SPORTS SCIENCES, v. 36, n. 7, p. 771-780, 2018. Web of Science Citations: 8.

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