Blood pressure and cardiac autonomic modulation at rest, during exercise and recovery time in the young overweight

Abstract This study aimed to assess the blood pressure (BP), cardiac autonomic modulation at rest, in physical exercise and in the recovery in untrained eutrophic (E) and overweight (O) youth. The body mass index (BMI), waist circumference (WC), systolic BP-SBP (E: 109.80 ± 10.05; O: 121.85 ± 6.98 mmHg) and diastolic BP - DBP (E: 65.90 ± 7.28; O: 73.14 ± 12.22 mmHg) were higher in overweight and the heart rate recovery (%HRR) was lower as compared with E volunteers. The BMI was associated with SBP (r= 0.54), DBP (r= 0.65), load on the heart rate variability threshold - HRVT (r= -0.46), %HRR 2' (r= -0.48) and %HRR 5' (r= -0.48), and WC was associated with SBP (r= 0.54), DBP (r= 0.64) and HRR 2' (r= -0.49). The %HRR was associated to SBP, DBP and HRVT. In summary, the anthropometric variables, BP and cardiac autonomic modulation in the recovery are altered in overweight youth.

摘要 本研究旨在评估未经过训练的体质量正常（E组）与超重（O组）青年在静息状态、体育运动期间及运动后恢复阶段的血压（BP）与心脏自主神经调节水平。本研究结果显示，超重青年的身体质量指数（BMI）、腰围（WC）、收缩压（SBP：E组为109.80±10.05 mmHg，O组为121.85±6.98 mmHg）及舒张压（DBP：E组为65.90±7.28 mmHg，O组为73.14±12.22 mmHg）均显著高于体质量正常组志愿者，而心率恢复率（%HRR）则低于体质量正常组。相关性分析表明，BMI与SBP（r=0.54）、DBP（r=0.65）、心率变异性阈值（HRVT）负荷（r=-0.46）、2分钟心率恢复率（%HRR 2'，r=-0.48）及5分钟心率恢复率（%HRR 5'，r=-0.48）呈显著相关；WC则与SBP（r=0.54）、DBP（r=0.64）及2分钟心率恢复率（%HRR 2'，r=-0.49）呈显著相关。此外，%HRR与SBP、DBP及HRVT均存在相关性。综上，超重青年的人体测量学指标、血压及恢复阶段的心脏自主神经调节功能均发生异常改变。