Sports practice is related to parasympathetic activity in adolescents

Revista Paulista de Pediatria

Suziane Ungari Cayres¹  Luiz Carlos Marques Vanderlei¹  Aristides Machado Rodrigues¹  Manuel João Coelho E Silva¹  Jamile Sanches Codogno¹  Maurício Fregonesi Barbosa¹  Rômulo Araújo Fernandes¹ 

关键词: Heart rate;    Autonomic nervous system;    Carotid intima-media thickness;    Adolescent;    Sports practice;    Frequência cardíaca;    Sistema nervoso autônomo;    Espessura mediointimal carotídea;    Adolescente;    Prática esportiva;   

DOI  :  10.1016/j.rpped.2014.09.002

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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