Abstract 302: Aerobic Exercise Effects on Endothelial Health Status in Pre- and Post Menopausal African American Women
Bibliographic record
Abstract
Background: When compared to other racial groups, African American women (AAW) reach menopause at an earlier age and are at an increase risk for CVD and endothelial health complications. A known intervention for the treatment of both CVD and menopausal changes is aerobic exercise training (AEXT). The purpose of this study was to compare the effects of AEXT on endothelial function between pre- and post- menopausal AAW. Methods: Sedentary, non-smoking pre- and post- menopausal AAW not on hormone replacement therapy and free of CVD completed AEXT. Participants exercised at 65% of their VO2max for 40 min, 3 days/wk, for 6 months. Participants completed flow-mediated dilation (FMD) testing and blood sample collection. Endothelial microparticles from plasma samples were analyzed by labeling with late stage apoptotic antibodies CD31+/CD42b- and early phase endothelial dysfunction and endothelial activation CD62E+ and quantified using flow cytometry. Results: No difference in FMD was found between groups before (7.11±1.2 vs. 7.73±0.8 %) or after (10.38±0.2 vs. 9.88±0.6 %) AEXT. Both pre- (7.11±1.2 vs. 10.38±0.2 %, p≤0.005) and post- (7.73±0.8 vs. 9.88±0.6 %, p≤0.043) menopausal women significantly increased FMD after AEXT. CD31+/CD42b- EMPs did not differ between pre- and post-menopausal AAW before (4.52±0.9 vs. 2.9±0.4 events/μL) or after (2.1±0.4 vs. 2.31±0.5e vents/μL) AEXT. CD31+/CD42b- levels significantly decreased in pre-menopausal AAW (4.52±0.9 vs. 2.1±0.4 events/μL, p≤0.015) after AEXT. CD62E+ EMPS were not different between pre- and post-menopausal groups before (44±8.5 vs. 42.5±9 events/μL) or after (26.64±8.4 vs. 19.79±3.2 events/μL) AEXT. Both pre- (44±8.5 vs. 26.6±8.4 events/μL, p≤0.034) and post-menopausal (42.5±9 vs. 19.8±3.2 events/μL, p≤0.008) groups had lower levels of CD62E+ EMPs after AEXT. Discussion: No difference was found in terms of vascular function or health between pre- and post-menopausal AAW. Both groups showed improvements in vascular function and health after AEXT. Our findings suggest AEXT has significant improvements in terms of endothelial function and vascular health in AAW regardless of being a pre- or post-menopausal.
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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) | 0.003 | 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".