Universidade Federal Fluminense, Departmento de Fisiologia e Farmacologia, Rua Professor Hernani Pires de Melo, 101, São Domingos, 24210-130 Niterói, RJ, Brazil.
Universidade Federal Fluminense, Departamento de Educação Física e Esportes, Rua Professor Marcos Waldemar de Freitas Reis, s/n, São Domingos, 24210-201 Niterói, RJ, Brazil.
An Acad Bras Cienc. 2021 Oct 29;93(suppl 3):e20201677. doi: 10.1590/0001-3765202120201677. eCollection 2021.
The current study was undertaken to test the hypothesis that the high physical capacity of rowing athletes may not reverse the influence of age on cardiac autonomic control decline estimated by heart rate variability (HRV). Forty-four male subjects divided in four groups: 11 young athletes (YA; 18 ±1 year), 11 young non-athletes (YNA; 20 ±1 year), 11 middle age athletes (MAA; 43 ±6 years) and 11 middle age non-athletes (MNA; 44 ±8 years) participated in the study. Heart rate (HR) was recorded beat-by-beat for 10 minutes in supine (SUP) and 10 min in orthostatic (ORT) positions. HRV was analyzed in the frequency domain to obtain the spectral power in the high (HF) and low frequency (LF) bands, and the changes to ORT (%∆HRV) were calculated (ORT - SUP / SUP). During SUP, HF was lower in MNA and MA compared to YA and YNA, while LF was lower in MNA than YA. For %ΔHRV, %ΔHF was higher in YA than YNA, MA and MNA. The %ΔLF was not different among groups. In conclusion, aging seems to overcome the influence of physical fitness on neural regulation of the heart, as highlighted by the HRV response to active standing.
划船运动员的高体能可能无法逆转心率变异性（HRV）估计的年龄对心脏自主控制下降的影响。44 名男性受试者分为四组：11 名年轻运动员（YA；18 ±1 岁）、11 名年轻非运动员（YNA；20 ±1 岁）、11 名中年运动员（MAA；43 ±6 岁）和 11 名中年非运动员（MNA；44 ±8 岁）参加了这项研究。在仰卧位（SUP）和 10 分钟直立位（ORT）下，每分钟记录一次心率（HR）。对 HRV 进行频域分析，以获得高频（HF）和低频（LF）带的频谱功率，并计算 ORT 时的变化（ORT-SUP/SUP）。在 SUP 期间，MNA 和 MA 组的 HF 低于 YA 和 YNA 组，而 MNA 组的 LF 低于 YA 组。对于 %ΔHRV，YA 组的 %ΔHF 高于 YNA、MA 和 MNA 组。%ΔLF 在各组之间没有差异。总之，年龄似乎超过了身体素质对心脏神经调节的影响，这突出表现在 HRV 对主动站立的反应上。
