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Open AccessArticle

Short-Term Cardiac Autonomic Recovery after a Repeated Sprint Test in Young Soccer Players

Nucleus of High Performance, São Paulo, SP 04753-070, Brazil
Red Bull Brazil, Jarinu, SP 13240-000, Brazil
Department of Physical Education, Federal University of Paraiba; João Pessoa, PB 58051-900, Brazil
Author to whom correspondence should be addressed.
Sports 2019, 7(5), 102;
Received: 9 March 2019 / Revised: 12 April 2019 / Accepted: 16 April 2019 / Published: 30 April 2019
(This article belongs to the Special Issue Training Process in Soccer Players)
The aim of this study was to describe the time course (within 2 h post-exercise) of heart rate variability (HRV) recovery following a traditional repeated sprint ability (RSA) test applied to youth soccer players. Twenty-four young soccer players (18.4 ± 0.5 years) undertook the following assessments: (1) 10 min rest in the seated position for HRV assessment; (2) a repeated sprint ability (RSA) test; (3) passive recovery in the seated position for 10 min, immediately after finishing the RSA test and 1 h and 2 h post-RSA test. During the HRV measurements (using the natural log of root mean square difference of successive normal RR intervals—lnRMSSD) the participants were instructed to assume a comfortable sitting position, remaining awake and breathing spontaneously for 10 min. Magnitude-based inference was used in the analyses. After the RSA test, the post-1 h measure was almost certainly lower than the resting measure, but almost certainly higher than the lnRMSSD measured post-RSA test. The lnRMSSD post-2 h was likely lower than the resting lnRMSSD and very likely higher than post-1 h. In conclusion, lnRMSSD is severely depressed after performing an RSA test, and reactivation is incomplete after 2 h of passive recovery. This result should be considered by practitioners when applying successive training sessions within intervals shorter than 2 h. View Full-Text
Keywords: heart rate variability; young players; training load monitoring heart rate variability; young players; training load monitoring
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Abad, C.C.C.; Pereira, L.A.; Zanetti, V.; Kobal, R.; Loturco, I.; Nakamura, F.Y. Short-Term Cardiac Autonomic Recovery after a Repeated Sprint Test in Young Soccer Players. Sports 2019, 7, 102.

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