Santos Lucas E R, Dames Karla K, DE Oliveira Edilaine S D, Fernandes Matheus S S, Filgueira Tayrine O, Mesquita Bruna M S, DE Souza Catarina F C X M, Lattari Eduardo, Santos Tony M
Physical Education Department, Federal University of Pernambuco, Recife, PE, BRAZIL.
Grad Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco, Recife, PE, BRAZIL.
Int J Exerc Sci. 2023 May 1;16(2):525-537. doi: 10.70252/QHJU6601. eCollection 2023.
Non-linear analyzes such as Approximated Entropy (ApEn) and Sample Entropy (SampEn) could show the adaptability of the autonomic nervous system in relation to the dynamic changes caused by exercise. The aims of the study were: a) Investigate the effects of different Self-Selected based Interval Exercises (SSIE) configurations on Heart Rate (HR) entropy; b) Determine whether the stimuli time promote different entropy responses; c) Observe whether exercises with passive self-selected recovery time (SSRT) promote different HR entropy responses compared to those with imposed time and active recovery; and d) Determine whether post-training entropy responses quickly return to baseline. Fifteen older women were randomized to perform six sessions of SSIE and one session of Self-Selected Continuous Exercise (SSCE), with approximately 24 min duration each. The results showed increases on ApEn during the exercises compared to the moments of rest Pre (p < 0.001), Post 6 min (p = 0.003) and Post 12 min (p < 0.001). Results demonstrated that interval exercises (IE) with SSRT, present lower values of ApEn and SampEn regarding the continuous activity (p < 0.05). It was also observed that the entropy values after training returned quickly to levels close to those of pre-exercise rest with a tendency to decrease more pronounced for the continuous. The SSIE were able to promote greater complexity in the HR entropy of older women, allowing greater stabilization of the cardiovascular system, including after training.
诸如近似熵（ApEn）和样本熵（SampEn）等非线性分析可以显示自主神经系统对运动引起的动态变化的适应性。本研究的目的是：a）研究不同的基于自我选择的间歇运动（SSIE）配置对心率（HR）熵的影响；b）确定刺激时间是否会促进不同的熵反应；c）观察与设定时间和主动恢复的运动相比，具有被动自我选择恢复时间（SSRT）的运动是否会促进不同的HR熵反应；d）确定训练后的熵反应是否会迅速恢复到基线水平。15名老年女性被随机分配进行6节SSIE课程和1节自我选择的持续运动（SSCE）课程，每节课程持续约24分钟。结果显示，与运动前休息时刻（p < 0.001）、运动后6分钟（p = 0.003）和运动后12分钟（p < 0.001）相比，运动期间ApEn增加。结果表明，与持续活动相比，具有SSRT的间歇运动（IE）的ApEn和SampEn值较低（p < 0.05）。还观察到，训练后的熵值迅速恢复到接近运动前休息时的水平，且持续运动的熵值下降趋势更明显。SSIE能够促进老年女性HR熵的更大复杂性，使心血管系统包括训练后能有更大的稳定性。
