Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise
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)...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/281265 |
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| author | Pierre-Marie Leprêtre Philippe Lopes Claire Thomas Christine Hanon |
| author_facet | Pierre-Marie Leprêtre Philippe Lopes Claire Thomas Christine Hanon |
| author_sort | Pierre-Marie Leprêtre |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-c73fa89e3176419c96933c1579049e6b |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-c73fa89e3176419c96933c1579049e6b2025-02-03T01:31:42ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/281265281265Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running ExercisePierre-Marie Leprêtre0Philippe Lopes1Claire Thomas2Christine Hanon3Laboratoire de Recherche Adaptations Physiologiques à l'Exercice et Réadaptations à l'Effort, EA 3300, UFR-STAPS, Université de Picardie Jules Verne, Avenue Paul Claudel, 80025 Amiens cedex 1, FranceDépartement STAPS, UFR Sciences Fondamentales Appliquées, Université d'Evry-Val d'Essonne,91025, Evry, FranceLaboratoire de Biomécanique et de Physiologie, Mission Recherche, Institut National du Sport, de l'Expertise et de la Performance(INSEP), 75012, Paris, FranceLaboratoire de Biomécanique et de Physiologie, Mission Recherche, Institut National du Sport, de l'Expertise et de la Performance(INSEP), 75012, Paris, FranceTo 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.http://dx.doi.org/10.1100/2012/281265 |
| spellingShingle | Pierre-Marie Leprêtre Philippe Lopes Claire Thomas Christine Hanon Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise The Scientific World Journal |
| title | Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise |
| title_full | Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise |
| title_fullStr | Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise |
| title_full_unstemmed | Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise |
| title_short | Changes in Cardiac Tone Regulation with Fatigue after Supra-Maximal Running Exercise |
| title_sort | changes in cardiac tone regulation with fatigue after supra maximal running exercise |
| url | http://dx.doi.org/10.1100/2012/281265 |
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