Ultra-shortened time-domain HRV parameters at rest and following exercise in athletes: an alternative to frequency computation of sympathovagal balance.
Eur J Appl Physiol
; 118(1): 175-184, 2018 Jan.
Article
em En
| MEDLINE
| ID: mdl-29128939
ABSTRACT
PURPOSE:
The primary purpose of this study was to determine the accuracy of the standard deviation of normal-to-normal intervals (SDNN) to root mean square of successive normal-to-normal interval differences (RMSSD) ratio from 1-min recordings (SDNNRMSSD1-min) compared to criterion recordings, as well as its relationship to low-frequency-to-high-frequency ratio (LFHF) at rest and following maximal exercise in a group of collegiate athletes.METHOD:
Twenty athletes participated in the study. Heart rate variability (HRV) data were measured for 5 min before and at 5-10 and 25-30 min following a maximal exercise test. From each 5-min segment, the frequency-domain measures of HF, LF, and LFHF ratio were analyzed. Time-domain measures of SDNN, RMSSD, and SDNNRMSSD ratio were also analyzed from each 5-min segment, as well as from randomly selected 1-min recordings.RESULT:
The 1-min values of SDNN, RMSSD, and SDNNRMSSD provided no significant differences and nearly perfect intra-class correlations (ICCs ranged from 0.97 to 1.00, p < 0.001 for all) to the criterion measures from 5-min recordings. In addition, SDNN, RMSSD, and SDNNRMSSD from the 1-min segments provided very large to nearly perfect correlations (r values ranged from 0.71 to 0.97, p < 0.001 for all) to LF, HF, and LFHF, respectively, at each time point.CONCLUSION:
The findings of the study suggest that ultra-shortened time-domain markers may be useful surrogates of the frequency-domain parameters for tracking changes in sympathovagal activity in athletes.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Clinical_trials
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article