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Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise
Joint Authors
Leprêtre, Pierre-Marie
Hanon, Christine
Lopes, Philippe
Thomas, Claire
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-30
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
To investigate the effects of fatigue and metabolite accumulation on the postexercicse parasympathetic reactivation, 11 long-sprint runners performed on an outdoor track an exhaustive 400 m long sprint event and a 300 m with the same 400 m pacing strategy.
Time constant of heart rate recovery (HRRτ), time (RMSSD), and frequency (HF, and LF) varying vagal-related heart rate variability indexes were assessed during the 7 min period immediately following exercise.
Biochemical parameters (blood lactate, pH, PO2, PCO2, SaO2, and HCO3−) were measured at 1, 4 and 7 min after exercise.
Time to perform 300 m was not significantly different between both running trials.
HHRτ measured after the 400 m running exercise was longer compared to 300 m running bouts (183.7±11.6 versus 132.1±9.8 s, P<0.01).
Absolute power density in the LF and HF bands was also lower after 400 m compared to the 300 m trial (P<0.05).
No correlation was found between biochemical and cardiac recovery responses except for the PO2 values which were significantly correlated with HF levels measured 4 min after both bouts.
Thus, it appears that fatigue rather than metabolic stresses occurring during a supramaximal exercise could explain the delayed postexercise parasympathetic reactivation in longer sprint runs.
American Psychological Association (APA)
Leprêtre, Pierre-Marie& Lopes, Philippe& Thomas, Claire& Hanon, Christine. 2012. Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-459979
Modern Language Association (MLA)
Leprêtre, Pierre-Marie…[et al.]. Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise. The Scientific World Journal No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-459979
American Medical Association (AMA)
Leprêtre, Pierre-Marie& Lopes, Philippe& Thomas, Claire& Hanon, Christine. Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-459979
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-459979