Effects of Chair-Based Exercises on Perceived Therapeutic and Quality of Life in Inactive Older Adults With Knee Osteoarthritis: A Randomized Controlled Trial
Bibliographic record
Abstract
BACKGROUND: This study evaluated the effects of chair-based exercises (CBEs) on pain, function, balance, quality of life, and exercise perception in inactive older adults with knee osteoarthritis and explored social policy implications. METHODS: A single-blind, parallel-group, randomized controlled trial, included 40 participants (≥65 years, Kellgren-Lawrence Grade 2-3 knee osteoarthritis, and no regular exercise in the last 3 months). The intervention group (IG; n = 20) performed CBE twice weekly for 8 weeks, while the control group (n = 20) maintained usual activities. Outcomes were assessed using the Western Ontario and McMaster Universities Osteoarthritis index (pain, stiffness, and function), Timed Up-and-Go test (balance/mobility), Exercise Benefits/Barriers Scale, and Nottingham Health Profile. Data were analyzed using analysis of covariance to compare postintervention outcomes while controlling for baseline scores, and qualitative comparative analysis explored factors affecting quality of life. RESULTS: Analysis of covariance revealed that the IG demonstrated statistically significant and clinically substantial improvements in pain, stiffness, and function (Western Ontario and McMaster Universities Osteoarthritis), as well as dynamic balance and mobility (Timed Up and Go), with large treatment effects observed across all measures compared with the control group. Perceived exercise benefits increased, and barriers decreased in the IG. Nottingham Health Profile scores also improved significantly in the IG. Qualitative comparative analysis indicated that quality-of-life improvements resulted from pain reduction, functional gains, and enhanced exercise perception. CONCLUSION: This study provides robust evidence that an 8-week CBE program significantly improves pain, function, balance, and quality of life in older adults with knee osteoarthritis while enhancing exercise motivation. SIGNIFICANCE: As a cost-effective and safe intervention, CBE can support active aging, reduce health care costs, and enhance older adults' social participation. Integrating CBE into public health policies and community programs may promote well-being and independence.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 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".