Cardiovagal activity following acute sprint interval exercise (706.6)
Bibliographic record
Abstract
The purpose of this study was to examine the impact of sprint interval exercise (SIE) on the time course of cardio‐autonomic recovery and vagal activity over a 24 h period. Eight healthy males (age=24.1±2.3 y) performed a single bout of SIE that included 4 x 30 s all out sprints interspersed by 4 min of recovery, performed on a manual treadmill. Following an overnight fast, measurements were taken at baseline (day 1; 8:00 a.m.), pre‐exercise (PRE‐X), immediately (PT‐X1), 90 (PT‐X2), 180 (PT‐X3) and 300 (PT‐X4) min post‐exercise as well as the following morning (day 2). Compared to PRE‐X, all spectral, time domain and Poincaré plot indices of heart rate variability (HRV) were reduced during PT‐X1‐3 (P蠄0.01). Baroreflex sensitivity was also depressed from PT‐X1‐4 (P<0.01). Relative to PRE‐X, plasma pancreatic polypeptide (PP; plasma indicator of vagal stimulation) was elevated at PT‐X1 (P=0.03). There were no differences in resting HRV, baroreflex sensitivity and plasma PP values between day 1 and 2 (P蠅0.12). These results indicate that despite an acute rise in plasma PP, there is a profound minimization of cardio‐vagal control following SIE. Cardio‐autonomic modulation recovers progressively and all indices of vagal activity are normalized by the following morning. Grant Funding Source : Supported by NSERC
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".