The Impact of Fitness Status on Vascular and Baroreceptor Function in Healthy Women and Men
Why this work is in the frame
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Bibliographic record
Abstract
<b><i>Background:</i></b> Chronic endurance exercise training elicits desirable physiological adaptations in the cardiovascular system. The volume of exercise training required to generate healthy adaptations is unclear. This study assessed the effects of differing exercise training levels on arterial stiffness, compliance, and autonomic function. <b><i>Methods:</i></b> Eighty healthy adults (38.5 ± 9.7 years; 44% female) defined as endurance-trained (ET, <i>n</i> = 29), normally active (NA, <i>n</i> = 27), or inactive (IN, <i>n</i> = 24) participated. Cardiovascular markers, including hemodynamics, large arterial compliance and small arterial compliance (LAC and SAC), carotid-femoral pulse wave velocity (PWV), and spontaneous baroreceptor sensitivity (BRS) were assessed. <b><i>Results:</i></b> ET showed significantly greater LAC values (21.4 ± 6.5) than NA (16.9 ± 2.5; <i>p</i> = 0.002) and IN (14.7 ± 3.2 mL × mm Hg × 10; <i>p</i> = 0.028). Values for SAC and BRS were significantly higher in ET than IN (<i>p</i> &#x3c; 0.001 and <i>p</i> = 0.028, respectively), but not NA. Compared to IN, PWV values for ET and NA were significantly lower (<i>p</i> &#x3c; 0.003). After adjusting for covariates (age, sex, and SBP), significant associations with cardiovascular fitness status were noted for all markers but BRS. <b><i>Conclusion:</i></b> Endurance exercise increases LAC likely due to high-volume training; however, lower volumes of physical activity may be sufficient to positively benefit vascular health overall.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.006 | 0.001 |
| 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it