Reliability of heart rate variability threshold and parasympathetic reactivation after a submaximal exercise test

• Main Authors: Carlos Janssen Gomes da Cruz (Author), Paloma da Silva Rolim (Author), Deleon de Souza Pires (Author), Christopher Marcos Oliveira Mendes (Author), Gabriel Monteiro de Paula (Author), Luiz Guilherme Grossi Porto (Author), Giliard Lago Garcia (Author), Guilherme Eckhardt Molina (Author)
• Format: Book
• Published: Universidade Estadual Paulista (UNESP).
• Subjects: article
• Online Access: Connect to this object online.

Summary

Abstract The objective of this study was to evaluate reproducibility of heart rate variability threshold (HRVT) and parasympathetic reactivation in physically active men (n= 16, 24.3 ± 5.1 years). During the test, HRVT was assessed by SD1 and r-MSSD dynamics. Immediately after exercise, r-MSSD was analyzed in segments of 60 seconds for a period of five minutes. High absolute and relatively reproducible analysis of HRVT were observed, as assessed by SD1 and r-MSSD dynamics (ICC = 0.92, CV = 10.8, SEM = 5.8). During the recovery phase, a moderate to high reproducibility was observed for r-MSSD from the first to the fifth minute (ICC = 0.69-0.95, CV = 7.5-14.2, SEM = 0.07-1.35). We conclude that HRVT and r-MSSD analysis after a submaximal stress test are highly reproducible measures that might be used to assess the acute and chronic effects of exercise training on cardiac autonomic modulation during and/or after a submaximal stress test.

Item Description

1980-6574
10.1590/s1980-6574201700010010