Prática esportiva está relacionada à atividade parassimpática em adolescentes

Abstract

OBJECTIVE: To analyze the relationship among sports practice, physical education class, habitual physical activity and cardiovascular risk in adolescents. METHODS: Cross-sectional study with 120 schoolchildren (mean: 11.7±0.7 years old), with no regular use of medicines. Sports practice and physical education classes were assessed through face-to-face interview, while habitual physical activity was assessed by pedometers. Bodyweight, height and height-cephalic trunk were used to estimate maturation. The following variables were measured: body fatness, blood pressure, resting heart rate, blood flow velocity, intima-media thickness (carotid and femoral) and heart rate variability (mean between consecutive heartbeats and statistical index in the time domain that show the autonomic parasympathetic nervous system activity root-mean by the square of differences between adjacent normal R-R intervals in a time interval). Statistical treatment used Spearman correlation adjusted by sex, ethnicity, age, body fatness and maturation. RESULTS: Independently of potential confounders, sports practice was positively related to autonomic parasympathetic nervous system activity (β=0.039 [0.01; 0.76]). On the other hand, the relationship between sport practice and mean between consecutive heartbeats (β=0,031 [-0.01; 0.07]) was significantly mediated by biological maturation. CONCLUSIONS: Sport practice was related to higher heart rate variability at rest.

Influência Da Atividade Física Na Modulação Autonômica Cardíaca

“…With this, the resistance exercise has an effect on the life of patients with peripheral artery disease, improving the ability to walk, quality of life and muscular strength 17,18 . Therefore, exercise has a positive role in stimulating the improvement of the physical capacity, presenting a significant and positive relation in the quality of life 2 .…”

“…Heart rate variability (HRV) is a simple, non-invasive method that consists of oscillation of the intervals between consecutive heartbeats (R-R). Moreover, it is an effective tool to study factors of cardiovascular risks and cardiac autonomic modulation, being a functional indicator of the autonomous nervous system (ANS) 1,2 .…”

A música nas aulas de body combat™ melhora o estado de ânimo de adolescentes

“…Ainda, facilita autopercepção de competência e autodeterminação para realizá-lo, motivando ao desenvovimento do exercício 14,15 . Portanto, estes benefícios associados à prática de atividade física provocam alterações fisiológicas no ser humano: atuando no controle nervoso simpático 16 , na frequência cardíaca e respiratória 13,17 , no metabolismo, no consumo de oxigênio e na tensão muscular 18 . Além disso, o impacto positivo da música pode melhorar os estados de ânimo 19 levando à maior aderência à prática regular de exercício físico 14,15 .…”

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“…Methods of HRV assessment are used in sports physiology and medicine (Schmitt, Regnard, Desmarets, Mauny, Mourot, Fouillot, Coulmy, & Millet, 2013, Sandercock, & Brodie, 2006. However, the study of age-related HRV peculiarities showed ambiguous results (Gąsior, Sacha, Jeleń, Pawłowski, Werner, & Dąbrowski, 2015, Cayres, Vanderlei, Rodrigues, Silva, Codogno, Barbosa, & Fernandes, 2015, Jarrin, McGrath, Poirier, Séguin, Tremblay, Montplaisir, Paradis, & Séguin, 2015, which are possibly related to the samples studied. Interpretation and the choice of methods and HRV parameters also differ.…”