Nakamura Fabio Y, Pereira Lucas A, Cal Abad Cesar C, Cruz Igor F, Flatt Andrew A, Esco Michael R, Loturco Irineu
Nucleus of High Performance in Sport - NAR, São Paulo, SP, Brazil.
State University of Londrina, Londrina, PR, Brazil.
J Hum Kinet. 2017 Mar 12;56:73-80. doi: 10.1515/hukin-2017-0024. eCollection 2017 Feb.
Heart rate variability has been widely used to monitor athletes' cardiac autonomic control changes induced by training and competition, and recently shorter recording times have been sought to improve its practicality. The aim of this study was to test the agreement between the (ultra-short-term) natural log of the root-mean-square difference of successive normal RR intervals (lnRMSSD - measured in only 1 min post-1 min stabilization) and the criterion lnRMSSD (measured in the last 5 min out of 10 min of recording) in young female basketball players. Furthermore, the correlation between training induced delta change in the ultra-short-term lnRMSSD and the criterion lnRMSSD was calculated. Seventeen players were assessed at rest pre- and post-eight weeks of training. Trivial effect sizes (-0.03 in the pre- and 0.10 in the post- treatment) were found in the comparison between the ultra-short-term lnRMSSD (3.29 ± 0.45 and 3.49 ± 0.35 ms, in the pre- and post-, respectively) and the criterion lnRMSSD (3.30 ± 0.40 and 3.45 ± 0.41 ms, in the pre- and post-, respectively) (intraclass correlation coefficient = 0.95 and 0.93). In both cases, the response to training was significant, with Pearson's correlation of 0.82 between the delta changes of the ultra-short-term lnRMSSD and the criterion lnRMSSD. In conclusion, the lnRMSSD can be calculated within only 2 min of data acquisition (the 1 min discarded) in young female basketball players, with the ultra-short-term measure presenting similar sensitivity to training effects as the standard criterion measure.
心率变异性已被广泛用于监测运动员因训练和比赛引起的心脏自主神经控制变化，最近人们一直在寻求更短的记录时间以提高其实用性。本研究的目的是测试年轻女性篮球运动员中（超短期）连续正常RR间期均方根差的自然对数（lnRMSSD，仅在1分钟稳定期后1分钟内测量）与标准lnRMSSD（在记录的10分钟中的最后5分钟测量）之间的一致性。此外，还计算了超短期lnRMSSD中训练引起的增量变化与标准lnRMSSD之间的相关性。在训练前和训练八周后的休息状态下对17名运动员进行了评估。在超短期lnRMSSD（训练前和训练后分别为3.29±0.45和3.49±0.35毫秒）与标准lnRMSSD（训练前和训练后分别为3.30±0.40和3.45±0.41毫秒）的比较中发现了微小的效应量（训练前为-0.03，训练后为0.10）（组内相关系数=0.95和0.93）。在这两种情况下，训练反应均显著，超短期lnRMSSD的增量变化与标准lnRMSSD之间的Pearson相关性为0.82。总之，年轻女性篮球运动员仅需在2分钟的数据采集内（舍弃1分钟）即可计算出lnRMSSD，超短期测量对训练效果的敏感性与标准标准测量相似。
