Impact of ageing and pregnancy on the minute ventilation/carbon dioxide production response to exercise
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Ventilatory efficiency can be evaluated using the relationship between minute ventilation ( V ′ E ) and the rate of CO 2 production ( V ′ CO 2 ). In accordance with the modified alveolar ventilation equation, this relationship is determined by changes in dead space volume ( V D ) and/or the arterial CO 2 tension ( P aCO 2 ) equilibrium point. In this review, we summarise the physiological factors that may account for normative ageing and pregnancy induced increases in V ′ E / V ′ CO 2 during exercise. Evidence suggests that age-related increases in V D and pregnancy-related decreases in the P aCO 2 equilibrium point are mechanistically linked to the increased V ′ E / V ′ CO 2 during exercise. Importantly, the resultant increase in V ′ E / V ′ CO 2 (ratio or slope), with normal ageing or pregnancy, remains below the critical threshold for prognostic indication in cardiopulmonary disease, is not associated with increased risk of adverse health outcomes, and does not affect the respiratory system's ability to fulfil its primary role of eliminating CO 2 and maintaining arterial oxygen saturation during exercise.
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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 | 0.003 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| 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