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Caffeine affects heart rate autonomic control and blood pressure recovery after aerobic exercise in young adults


The postexercise recovery period is associated with changes in autonomic modulation, which may promote an intercurrent-favorable environment. Caffeine has the ability to release catecholamines, but its effects after the practice of physical exercises is poorly explored. The present study aimed to evaluate the acute effects of caffeine on the autonomic control of heart rate and cardiorespiratory parameters after moderate intensity aerobic exercise. 32 young males (23,59 ± 3,45 years) were submitted to: 1) Cardiopulmonary Exercise Testing; 2) Placebo Protocol and 3) Caffeine Protocol, that consisted of 15 minutes of rest, 30 minutes of exercise on a treadmill to 60% of VO2peak, followed by 60 minutes of recovery. Heart rate variability (HRV) indices and cardiorespiratory parameters were determined at different times during the protocols. Caffeine was shown to be capable of delaying the parasympathetic recovery, evaluated by the RMSSD and SD1 indices, promoted delayed recovery of blood pressure at baseline conditions; however it did not influence the behavior of respiratory rate, oxygen saturation and frequency-domain HRV indices. (AU)

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(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)
GONZAGA, LUANA ALMEIDA; MARQUES VANDERLEI, LUIZ CARLOS; GOMES, RAYANA LOCH; VALENTI, VITOR ENGRACIA. Caffeine affects autonomic control of heart rate and blood pressure recovery after aerobic exercise in young adults: a crossover study. SCIENTIFIC REPORTS, v. 7, . (16/02994-1, 17/14800-0)

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