EFFECTS OF A SHORT-TERM INTERMITTENT HEAT ACCLIMATION PROTOCOL ON PHYSIOLOGICAL PERFORMANCE AMONG ELITE BOXERS
Notice bibliographique
Résumé
Elizabeth Leal-Alfaro1, Brandon Stone2, J. Jay Dawes1 1Oklahoma State University, Stillwater, Oklahoma; 2High Performance Department, The Toronto Blue Jays Baseball Club, Dunedin, Florida PURPOSE: The purpose of this study was to determine the physiological responses to a 5-day exposure/10-day heat acclimation protocol in elite level boxers. METHODS: Physiological performance data was recorded from thirteen (8 males, 5 females) elite level boxers who underwent a 10-day HA protocol. All sessions were conducted in an environmental chamber (32˚C and 70% RH), at the same time of day. HA sessions occurred on in an every other day fashion, such that odd days were HA sessions (interval based) and ‘even days’ were considered normal sport training (aerobic based) with no HA session conducted. Prior to each session, anthropometric measurements were collected (e.g. height and body mass) and an instrumentation for heart rate (HR) monitoring was utilized, followed by a dynamic warm-up and a HA session or rowing heat stress test (RHST). The RHST occurred 24-hours pre- and post-the first and last HA session. The RHST occurred as follows: 3 minute warm up at self-selected pace followed by 3 “bouts” of 3 minutes maintaining a pace of 10% below their critical power level reached during an initial 3minute all-out effort row. Each bout was separated by 1-minute rest period. Average peak (HRpeak) and relative HR (HRavg) and training load (TLoad) were recorded on a second by second basis, while power output (watts) and pace (meters:minute) were recorded. Each bout was average across 20 second intervals to ensure power output requirements were maintained. RESULTS: Both average heart rate (HRavg) (150.82 ± 9.44 bpm to 129.06 ± 8.00 bpm, p < 0.001) and relative average heart rate (HRrel) (76.06 ± 4.26% to 65.13 ± 4.08%, p < 0.01) were significantly lower from pre- to post-HST. Additionally, training load was also significantly lower from pre to post-heat stress test (31.56 ± 6.55AU to 26.13 ± 4.16AU, p = 0.001). Significant differences in body mass were observed throughout the HST (Session 1 through Session 5, p < 0.01). CONCLUSION: Elite level boxers exhibited improvements in average peak and relative HR (e.g., were lower) for the RHST post HST. There was also a decrease in training load from pre- to post-HST. These results suggest that a 5-day heat acclimation protocol distributed intermittently over a 10-day training period may elicit significant improvements in physiological responses to heat exposure among elite level boxers.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| 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.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
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