Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of Training
Adolescent athletes are particularly vulnerable to stress. The current study aimed to monitor one of the most popular and accessible stress markers, heart rate variability (HRV), and its associations with training load and sleep duration in young swimmers during an 11-week training period to evaluat...
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doaj-71220b2f04b44d7aab61a62b0bff83442020-11-25T03:50:59ZengMDPI AGInternational Journal of Environmental Research and Public Health1660-46012020-03-01176209710.3390/ijerph17062097ijerph17062097Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of TrainingSigitas Kamandulis0Antanas Juodsnukis1Jurate Stanislovaitiene2Ilona Judita Zuoziene3Andrius Bogdelis4Mantas Mickevicius5Nerijus Eimantas6Audrius Snieckus7Bjørn Harald Olstad8Tomas Venckunas9Institute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaInstitute of Physical Performance, Norwegian School of Sport Sciences, 0863 Oslo, NorwayInstitute of Sports Science and Innovation, Lithuanian Sports University, 44221 Kaunas, LithuaniaAdolescent athletes are particularly vulnerable to stress. The current study aimed to monitor one of the most popular and accessible stress markers, heart rate variability (HRV), and its associations with training load and sleep duration in young swimmers during an 11-week training period to evaluate its relevance as a tool for monitoring overtraining. National-level swimmers (n = 22, age 14.3 ± 1.0 years) of sprint and middle distance events followed individually structured training programs prescribed by their swimming coach with the main intention of preparing for the national championships. HRV after awakening, during sleep and training were recorded daily. There was a consistent ~4.5% reduction in HRV after 3−5 consecutive days of high (>6 km/day) swimming volume, and an inverse relationship of HRV with large (>7.0 km/day) shifts in total training load (r = −0.35, <i>p</i> < 0.05). Day-to-day HRV did not significantly correlate with training volume or sleep duration. Taken together, these findings suggest that the value of HRV fluctuations in estimating the balance between the magnitude of a young athlete’s physical load and their tolerance is limited on a day-to-day basis, while under sharply increased or extended training load the lower HRV becomes an important indicator of potential overtraining.https://www.mdpi.com/1660-4601/17/6/2097autonomic nervous systemcompetitive swimminghigh-intensity exercisesleeptraining volume |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sigitas Kamandulis Antanas Juodsnukis Jurate Stanislovaitiene Ilona Judita Zuoziene Andrius Bogdelis Mantas Mickevicius Nerijus Eimantas Audrius Snieckus Bjørn Harald Olstad Tomas Venckunas |
spellingShingle |
Sigitas Kamandulis Antanas Juodsnukis Jurate Stanislovaitiene Ilona Judita Zuoziene Andrius Bogdelis Mantas Mickevicius Nerijus Eimantas Audrius Snieckus Bjørn Harald Olstad Tomas Venckunas Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of Training International Journal of Environmental Research and Public Health autonomic nervous system competitive swimming high-intensity exercise sleep training volume |
author_facet |
Sigitas Kamandulis Antanas Juodsnukis Jurate Stanislovaitiene Ilona Judita Zuoziene Andrius Bogdelis Mantas Mickevicius Nerijus Eimantas Audrius Snieckus Bjørn Harald Olstad Tomas Venckunas |
author_sort |
Sigitas Kamandulis |
title |
Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of Training |
title_short |
Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of Training |
title_full |
Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of Training |
title_fullStr |
Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of Training |
title_full_unstemmed |
Daily Resting Heart Rate Variability in Adolescent Swimmers during 11 Weeks of Training |
title_sort |
daily resting heart rate variability in adolescent swimmers during 11 weeks of training |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1660-4601 |
publishDate |
2020-03-01 |
description |
Adolescent athletes are particularly vulnerable to stress. The current study aimed to monitor one of the most popular and accessible stress markers, heart rate variability (HRV), and its associations with training load and sleep duration in young swimmers during an 11-week training period to evaluate its relevance as a tool for monitoring overtraining. National-level swimmers (n = 22, age 14.3 ± 1.0 years) of sprint and middle distance events followed individually structured training programs prescribed by their swimming coach with the main intention of preparing for the national championships. HRV after awakening, during sleep and training were recorded daily. There was a consistent ~4.5% reduction in HRV after 3−5 consecutive days of high (>6 km/day) swimming volume, and an inverse relationship of HRV with large (>7.0 km/day) shifts in total training load (r = −0.35, <i>p</i> < 0.05). Day-to-day HRV did not significantly correlate with training volume or sleep duration. Taken together, these findings suggest that the value of HRV fluctuations in estimating the balance between the magnitude of a young athlete’s physical load and their tolerance is limited on a day-to-day basis, while under sharply increased or extended training load the lower HRV becomes an important indicator of potential overtraining. |
topic |
autonomic nervous system competitive swimming high-intensity exercise sleep training volume |
url |
https://www.mdpi.com/1660-4601/17/6/2097 |
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