Comparison of physical activity levels in people with chronic obstructive pulmonary disease and healthy subjects residing in hypobaric hypoxia environments
Bibliographic record
Abstract
Background: The reduced level of physical activity in individuals with chronic obstructive pulmonary disease (COPD) is associated with disease severity; however, mild COPD may or may not decrease individuals' physical fitness. Currently, it is unknown whether high-altitude hypoxia is a modifying factor of physical activity levels in COPD compared to healthy subjects. Objective: To compare physical activity levels in individuals with COPD versus healthy subjects residing in high-altitude environments. Methods: Individuals with COPD GOLD 1(A, B) and control subjects residing at high altitudes (>2500m) were studied. Physical activity level was measured for seven days using triaxial accelerometry. Measurement variables included METs/hour, energy expenditure in kcal/hour, total daily energy expenditure, and number of steps per day. Results: Daily caloric expenditure associated with physical activity showed only a slight decrease (3.1%) in COPD patients compared to the control group; there was a significant 61.32% lower hourly calorie consumption rate in the COPD group. Additionally, COPD patients exhibited lower MET/hour (9.64% difference) and a substantial difference in the number of steps per day, with 139.41% fewer steps compared to the control group. Conclusion: COPD patients in hypobaric hypoxia environments exhibit significantly lower levels of physical activity compared to healthy individuals. Altitude hypoxia contributes to low levels of physical activity in both COPD patients and healthy subjects.
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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 | 0.001 | 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) | 0.001 | 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".