Abstract P143: Vigorous Physical Activity and 3-year Changes in Weight and Other Cardiometabolic Parameters in Youth: A Prospective Cohort Study
Bibliographic record
Abstract
Introduction: Few data exist describing the temporal association between the time spent within various intensities of physical activity (PA) and cardiometabolic health outcomes in youth. Study Hypotheses: In contrast to light- or moderate-intensity physical activity (PA) Vigorous- intensity PA would be associated with a reduced risk incident overweight and high normal blood pressure and (2) time spent in vigorous-intensity but not moderate- or light-intensity PA would be associated with cardiometabolic risk factors two years following baseline measurements. Design and Methods: This was a 3-year prospective cohort study of objectively-measured PA (Actical) in 315 youth aged 9 to-17 yrs of age studied in 14 schools. The primary exposure variable was PA intensity. The main outcomes measures were incident overweght status and high normal blood pressure. Secondary outcomes included disproportionate weight gain (annual change in body mass index Z score), waist circumference, systolic blood pressure (SBP), and cardiorespiratory fitness (VO 2 max) at the three year time point. Results: After three year follow-up, increasing time spent in any of the three PA intensities was not associated with incident overweight or incident high normal blood pressure. Compared to the lowest quartile, waist circumference [β = -0.04 95% CI = -0.07 to -0.01; p trend <0.01) and SBP [β = -3.08 95% CI = -6.79 to 0.64; p trend = 0.05] were lower in boys while VO 2 max was significantly higher [43.3 (39.6-46.4) vs 50.2 (43.8-52.9) mL/kg/min; p trend <0.01] in both boys and girls in the highest quartile of vigorous PA. These trends were not observed or reversed across quartiles of moderate- and light-intensity PA. Conclusions: Increasing time spent in vigorous-intensity PA at 12 years of age was associated with a more favorable cardiometabolic profile two years later. Similar trends were not evident for lower intensity PA. Experimental trials are needed to determine if these associations are causal in nature.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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) | 0.000 | 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".