Blood pressure reduction following prolonged exercise in young and middle-aged endurance athletes
Bibliographic record
Abstract
BACKGROUND: Previous studies examining the relationship between exercise dose and post-exercise hypotension (PEH) have employed a limited range of exercise duration and subject age. We extended the dose-response curve by studying two intensities of prolonged exercise that may produce a greater magnitude of PEH and reveal age differences in the exercise dose-response relationship for PEH. METHODS: Two groups of healthy recreational endurance athletes were studied: Young (n = 17; age 28 ± 1.1 years) and middle-aged participants (n = 18; 52 ± 0.90 years). They performed on separate occasions, 120 min of prolonged exercise (running) at moderate (60% VO2max) and high intensities (80% VO2max). RESULTS: PEH after 1 hour of recovery was similar within each age group for either exercise intensity, but was significantly greater in the middle-aged group (moderate intensity, -12.3 ± 1.6 mmHg; high intensity, -15.1 ± 1.7 mmHg) compared with the young group (moderate intensity, -1.2 ± 1.7 mmHg; high intensity, -5.7 ± 2.5 mmHg; p < 0.05). Stepwise regression showed that baseline blood pressure but not age was significantly related to the degree of PEH. Thus, the greater PEH seen in the middle-aged group is attributed to their higher baseline blood pressure (124 ± 3.0/79 ± 2.0 mmHg) than the young group (111 ± 2.0/69 ± 1.8 mmHg). A reduced total peripheral resistance following exercise was the primary contributor to PEH across both age groups and exercise intensities. CONCLUSIONS: We conclude that prolonged exercise induces a significant PEH regardless of exercise intensity.
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How this classification was reachedexpand
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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| 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) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".