EFFECT OF HUMAN PREGANCY ON PHASE II VENTILATORY AND GAS EXCHANGE KINETICS DURING MODERATE EXERCISE
Bibliographic record
Abstract
PURPOSE: To examine the hypothesis that O2 uptake (VO2) kinetics would be slowed in late pregnancy in response to a step increase in work rate. METHODS: The responses of eight healthy, physically active pregnant women (PG; gestational age 36.1 ± 0.4 wk) were compared to those of six nonpregnant women (CG) with similar characteristics. Subjects performed four repeats, on seperate days, of 8 min square-wave exercise bouts from loadless pedaling (4 min) to a work rate corresponding to 80% of their ventilatory threshold (Tvent). Time aligned and averaged responses for minute ventilation (VE), VO2 and CO2 output (VCO2) were fit using a monoexponential model from 20s post-work rate to either 3 min (ie. VO2) or 6 min exercise (ie. VCO2 and VE). CONCLUSION: The slower τVE in the PG was related to the greater gain in this group. It was postulated that the slowed τVO2 in late gestation was due to a reduced O2 availability resulting from a reduced hemoglobin concentration, a leftward shift in the O2-hemoglobin dissociation curve, a blunted sympathoadrenal response to exercise and shunting of blood to the fetoplacental unit. Supported by the U.S. Army Medical Research and Materiel Command Contract #DAMD17–96–C–6112, the Ontario Thoracic Society, Ontario Thoracic Society (Block-term Grant Funding), and Natural Sciences and Engineering Research Council of Canada (N.S.E.R.C.).
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| 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 | 0.000 |
| 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".