PMID- 29128939
OWN - NLM
STAT- MEDLINE
DCOM- 20180727
LR  - 20210213
IS  - 1439-6327 (Electronic)
IS  - 1439-6319 (Linking)
VI  - 118
IP  - 1
DP  - 2018 Jan
TI  - Ultra-shortened time-domain HRV parameters at rest and following exercise in 
      athletes: an alternative to frequency computation of sympathovagal balance.
PG  - 175-184
LID - 10.1007/s00421-017-3759-x [doi]
AB  - 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 (SDNN:RMSSD(1-min)) compared to criterion recordings, as well as its 
      relationship to low-frequency-to-high-frequency ratio (LF:HF) 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 LF:HF 
      ratio were analyzed. Time-domain measures of SDNN, RMSSD, and SDNN:RMSSD 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 SDNN:RMSSD 
      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 SDNN:RMSSD 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 LF:HF, 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.
FAU - Esco, Michael R
AU  - Esco MR
AUID- ORCID: 0000-0002-9470-9680
AD  - Exercise Physiology Laboratory, Department of Kinesiology, University of Alabama, 
      Box 870312, Tuscaloosa, AL, 35487, USA. mresco@ua.edu.
FAU - Williford, Henry N
AU  - Williford HN
AD  - Department of Kinesiology, Auburn University Montgomery, Montgomery, AL, USA.
FAU - Flatt, Andrew A
AU  - Flatt AA
AD  - Biodynamics Laboratory, Department of Health Sciences, Armstrong State 
      University, Savannah, GA, USA.
FAU - Freeborn, Todd J
AU  - Freeborn TJ
AD  - Department of Electrical and Computer Engineering, University of Alabama, 
      Tuscaloosa, AL, USA.
FAU - Nakamura, Fabio Y
AU  - Nakamura FY
AD  - Department of Medicine and Aging Sciences, "G. d'Annunzio" University of 
      Chieti-Pescara, Chieti, Italy.
AD  - The College of Healthcare Sciences, James Cook University, Douglas, QLD, 
      Australia.
LA  - eng
PT  - Journal Article
DEP - 20171111
PL  - Germany
TA  - Eur J Appl Physiol
JT  - European journal of applied physiology
JID - 100954790
SB  - IM
CIN - Eur J Appl Physiol. 2018 Jun;118(6):1287-1288. PMID: 29619594
MH  - Athletes
MH  - Electrocardiography/methods/*standards
MH  - Exercise Test/methods/*standards
MH  - *Heart Rate
MH  - Humans
MH  - Male
MH  - *Physical Conditioning, Human
MH  - Random Allocation
MH  - Vagus Nerve/*physiology
MH  - Young Adult
OTO - NOTNLM
OT  - Athlete monitoring
OT  - Cardiovascular-autonomic control
OT  - Heart rate variability
OT  - RMSSD
OT  - Time-domain
EDAT- 2017/11/13 06:00
MHDA- 2018/07/28 06:00
CRDT- 2017/11/13 06:00
PHST- 2017/06/10 00:00 [received]
PHST- 2017/10/25 00:00 [accepted]
PHST- 2017/11/13 06:00 [pubmed]
PHST- 2018/07/28 06:00 [medline]
PHST- 2017/11/13 06:00 [entrez]
AID - 10.1007/s00421-017-3759-x [pii]
AID - 10.1007/s00421-017-3759-x [doi]
PST - ppublish
SO  - Eur J Appl Physiol. 2018 Jan;118(1):175-184. doi: 10.1007/s00421-017-3759-x. Epub 
      2017 Nov 11.