Department of Exercise and Health Sciences, University of Taipei, Taipei 111, Taiwan.
Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun'Álvares, 4900-347, Viana do Castelo, Portugal.
Int J Environ Res Public Health. 2020 Jan 26;17(3):775. doi: 10.3390/ijerph17030775.
The aim of this study was to examine ultra-short-term and short-term heart rate variability (HRV) in under-20 (U-20) national futsal players during pre-tournament training camps and an official tournament. Fourteen male U-20 national futsal players (age = 18.07 ± 0.73 yrs; height = 169.57 ± 8.40 cm; body weight = 64.51 ± 12.19 kg; body fat = 12.42% ± 3.18%) were recruited to participate in this study. Early morning 10 min resting HRV, Borg CR-10 scale session rating of perceived exertion (sRPE), and general wellness questionnaire were used to evaluate autonomic function, training load, and recovery status, respectively. Log-transformed root mean square of successive normal-to-normal interval differences (LnRMSSD) was used to compare the first 30 s, first 1 min, first 2 min, first 3 min, and first 4 min with standard 5 min LnRMSSD. Mean (LnRMSSD) and coefficient of variation (LnRMSSD) of LnRMSSD were used to compare the different time segments of HRV analysis. The result of LnRMSSD showed nearly perfect reliability and relatively small bias in all comparisons. In contrast, LnRMSSD showed nearly perfect reliability and relatively small bias from 2-4 min time segments in all study periods. In conclusion, for accuracy of HRV measures, 30 s or 1 min ultra-short-term record of LnRMSSD and short-term record of LnRMSSD of at least 2 min during the training camps are recommended in U-20 national futsal players.
本研究旨在探讨 20 岁以下（U-20）国家五人制足球运动员在赛前训练营和正式比赛期间的超短期和短期心率变异性（HRV）。招募了 14 名 U-20 国家五人制足球运动员（年龄=18.07±0.73 岁；身高=169.57±8.40cm；体重=64.51±12.19kg；体脂=12.42%±3.18%）参与本研究。使用清晨 10 分钟静息 HRV、Borg CR-10 量表运动后主观感觉等级（sRPE）和一般健康问卷分别评估自主功能、训练负荷和恢复状态。对数转换连续正常-正常间期差值的均方根（LnRMSSD）用于比较前 30 秒、前 1 分钟、前 2 分钟、前 3 分钟和前 4 分钟与标准 5 分钟 LnRMSSD。LnRMSSD 的平均值（LnRMSSD）和变异系数（LnRMSSD）用于比较 HRV 分析的不同时间段。LnRMSSD 的结果显示在所有比较中均具有近乎完美的可靠性和较小的偏差。相比之下，在所有研究期间，LnRMSSD 从 2-4 分钟时间段显示出近乎完美的可靠性和较小的偏差。总之，为了 HRV 测量的准确性，在 U-20 国家五人制足球运动员的训练期间，建议记录 30 秒或 1 分钟的 LnRMSSD 超短期记录和至少 2 分钟的 LnRMSSD 短期记录。
