Self-efficacy and outcome expectations related to reducing sedentary behaviour and increasing physical activity in older adults with a mobility limitation
Bibliographic record
Abstract
Background: Few older adults with a mobility limitation achieve sufficient physical activity (PA) due to pain and physical dysfunction. In this population, reducing sedentary behaviour (SB) may be a more realistic starting point to modify activity behaviours compared to increasing PA. However, it is unknown how receptive this population is to this novel health intervention. We used social cognitive theory to examine receptivity of older adults with a mobility limitation to reducing SB relative to increasing PA. Specifically, we compared participants' self-efficacy and outcome expectations related to both behaviours. Methods: Pre-operative (n=39) and one-year post-operative (n=37) total knee replacement patients completed self-efficacy (task and self-regulatory efficacy) and outcome expectation questionnaires related to reducing SB and increasing PA. Paired samples t-tests and Wilcoxon Signed Rank Tests (for non-normal distributions) were used for statistical analyses. Results: Independent samples t-tests (with Bonferroni corrections) showed no significant differences between pre- and post-op groups. Therefore, groups were collapsed for analyses. Patients reported greater task self-efficacy for reducing SB (Median=80.89, IQR= 34.71) compared to increasing PA (Median=71.43, IQR=40.00) (Z=-2.441, p=0.015). There was no difference between patients' self-regulatory efficacy for reducing SB (M=4.95, SD=1.95) compared to increasing PA (M=4.63, SD=2.01); t(75)=1.802, p=0.076. Increasing PA was more strongly expected to lead to positive outcomes (M=4.07, SD=0.54) than reducing SB (M=3.89, SD=0.72; t(74)=-2.89, p=0.005). Conclusion: Although patients were more confident to reduce SB than increase PA and were equally confident to manage both behaviors, educating this population about positive outcomes associated with reducing SB may enhance receptivity to SB interventions.
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 | 0.002 | 0.007 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".