Recovery Dynamics Of HR And HRV In Novice Female Runners After A Maximal Cardiopulmonary Exercise Test
Notice bibliographique
Résumé
PURPOSE: It is known that delayed cardiac vagal reactivation occurs after high-intensity endurance exercises. However, the recovery dynamics of heart rate and heart rate variability after a maximal incremental exercise test have been studied less in non-athletic population and especially in women. The main aim of the study was to find out the recovery dynamics of HR and HRV immediately after a maximal cardiopulmonary exercise test in novice female runners. METHODS: 28 novice female runners (33.7 ± 4.2 y, 167 ± 7 cm, 67.0 ± 13.0 kg, VO2max 39.0 ± 4.3 ml/kg/min) were selected to participate this study. The results of five participants were excluded from analysis due to missing data or artifacts. The visit to the laboratory included resting ECG, RR interval (RRI) and anthropometric measurements (height, body mass, fat % from the skinfold) and maximal incremental running test with 3-min steps on a treadmill until exhaustion. RRIs were measured continuously during rest, running test and immediate 15-minute sitting recovery. Breath-by-breath VO2 and VCO2 were collected continuously during the test. RESULTS: HRrest was 73 ± 9 bpm, RMSSDrest 31.0 ± 11.7 ms and HFPrest 6.0 ± 0.8 ln ms2. Fast recovery of HR occurred during the first 5 minutes (from 192.2 ± 9.9 to 111.4 ± 2.4 bpm, P < 0.001), after which no significant minute-by-minute recovery was detected. HR recovery during the first minute (HRR1min) was 36.4 ± 9.5 beats. Lower HRrest was associated (r = -0.53, P = 0.016) with faster HR recovery during the recovery. No recovery of RMSSD or HFP was detected during the 15 min recovery. Resting HRV was not associated with HRR or HRV recovery. RMSSD was 15.0 ± 9.2 % of RMSSDrest at the end of the recovery (RMSSD%), and positively associated with HRR15 (r = 0.504, P = 0.017). CONCLUSION: No recovery of vagal-derived HRV indices occurred during the 15-minute recovery after a maximal cardiopulmonary exercise test in novice female runners. This confirms the earlier findings of blunted vagal reactivation after high-intensity exercises also in women. A tendency towards higher RMSSD% when compared to rest was found in those who had faster HR recovery, but overall changes in HRV were minor. The typical fast HR recovery, during the first five minutes in the present study, may reflect more the withdrawal of sympathetic modulation and non-autonomic effects.
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| 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) | 0,002 | 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 source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».