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Cardiorespiratory synchronism is associated in the maximal cardiopulmonary exercise test in male athletes of the University of Málaga

2022; Volume: 75; Issue: 2 Linguagem: Inglês

10.23736/s0025-7826.22.04147-3

1827-1863

Wollner Materko, Caio CESAR DOS REIS FAÇANHA, Maria Neide Sadala, Marcela FABIANI SILVA DIAS, Alisson VIEIRA COSTA, Demilto YAMAGUCHI da PUREZA, Dilson RODRIGUES BELFORT, Álvaro A. DUARTE ALBERTO,

Chronic Obstructive Pulmonary Disease (COPD) Research

BACKGROUND: Cardiorespiratory interactions modulated by exercise intensity have the capacity to both dampen the variability in systemic blood flow as well as improve the efficiency of work done by the heart to distribute adequate amounts of O2 and eliminate CO2 formed in the body tissues optimizing ATP production for muscle contraction. Our aim was to describe cardiorespiratory synchronism during last 5 min in the CPET in male athletes of the University of Málaga.METHODS: This study was designed as a cross-sectional study of consisted of thirty-one male athletes (178.5±1.1 cm and 75.1±1.2 kg) between 20 to 30 yrs of old. The athletes performed a CPET on a treadmill connected to a gas analyzer system with breath-by-breath measurements of respiratory parameters and heart rate (HR) collected by an ECG device. The cross-correlation analysis was adapted to evaluate the strength of coupling between HR and respiration rate (RR) during last 5 min of the CPET in time domain.RESULTS: The athletes showed a variation of heart rate during last 5 min of the CPET, 170.1±9.2 bpm and the variation of the respiration rate, resulting in 44.5±6.3 rpm, in which the participants had an average ratio of 3.85±0.48 respiratory rates per cardiac cycle. The results of the cross-correlation between the signals were excellent, resulting in 0.98±0.01 and no delay between the signals.CONCLUSIONS: Our finding described a cardiorespiratory synchronism during last 5 min in the CPET in participants with physical and anthropometric characteristics similar present study.