Effects of High-Intensity Interval Exercise and Training on Hemostasis in Healthy Males
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Résumé
Vigorous aerobic exercise affects intravascular coagulation, shifting the hemostatic balance towards pro-coagulant activity. Increased sympathetic nervous system (SNS) activity during exercise with enhanced plasma catecholamine concentrations may transiently elevate the risk of acute thrombosis. The acute effects of high-intensity interval exercise (HIE) on pro- versus anti-coagulant balance is unknown, as are the effects of short-term HIE training. PURPOSE: To examine the effects of acute HIE and short-term HIE training on coagulant activity and its potential relationship to SNS activity. METHODS: Sixteen healthy males performed acute HIE and a subset of 8 males underwent 2 weeks of HIE training. Serial blood samples during HIE were collected at rest before HIE (Baseline), immediately after HIE (Post-EX1), after a 1-hour recovery (Post-EX2), and at rest after completing 6 HIE training sessions performed over 2 weeks (Post-TR). Classical thromboelastography (TEG®) and rotational thromboelastometry (ROTEM®) evaluated coagulation initiation (CI) time, enzyme-linked immunosorbent assay (ELISA) quantified plasma epinephrine (E) and norepinephrine (NE). Changes in CI time and catecholamine levels were assessed by independent one-way repeated measures ANOVA. Potential interrelationships between coagulation and SNS activity were examined using Pearson’s correlation. RESULTS: Acute HIE accelerated CI time in TEG by +24% (P=0.004) at Post-EX1 and +39% at Post-EX2 (P<0.001), whereas ROTEM showed increases of +12% (P=0.036) and +19% (P=0.003), respectively. HIE training significantly diminished post-HIE accelerations (ROTEM) in CI time, with a lengthened CI time at Post-EX2 as compared with pre-training values (P=0.003). Plasma E (P=0.021) and NE (P=0.003) were elevated during acute HIE at Post-EX1 and their relationship with CI time was assessed. After training, plasma E (P=0.292) and NE (P=0.105) were no longer elevated significantly Post-EX1 and E showed a strong inverse correlation to corresponding ROTEM CI time acceleration (P=0.011). CONCLUSIONS: HIE shifts the balance towards a pro-coagulant response in association with enhanced SNS activity. HIE training slows the rate of coagulation during acute HIE. These data suggest that HIE training can attenuate pro-coagulant mechanisms and may reduce the risk for a thrombotic event during acute vigorous exercise.
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Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,002 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
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