Bibliographic record
Abstract
Our bodies are built for movement, no matter our age.Yet most older adults are sedentary for at least 8.5 hours a day. 1 Sedentary behaviour refers to the activities we do sitting or lying down where little energy is expended, such as television watching, computer work and driving. 2 By comparison, physical activity guidelines recommend that all adults, including those older than 65 years, should get at least 150 minutes per week of moderate-intensity aerobic exercise in periods of at least 10 minutes at a time. 3,4We should also do muscle and strength activities at least 2 days per week. 5ogether, physical inactivity and sedentary behaviour increase the risk of diabetes, obesity, cardiovascular disease, breast and colon cancer, premature death and many other chronic diseases. 2,6,7For someone who is inactive, the weekly goal of 150 minutes of physical activity can be daunting if they do not have an effective strategy to becoming more active.It is even more difficult for older adults who have limited mobility, ailing health, poor access to services or a perception that physical activity takes too much time. 8
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 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 | 0.011 | 0.081 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.006 |
| Science and technology studies | 0.004 | 0.002 |
| Scholarly communication | 0.007 | 0.008 |
| Open science | 0.003 | 0.002 |
| Research integrity | 0.005 | 0.003 |
| Insufficient payload (model declined to judge) | 0.049 | 0.008 |
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".