ENCOURAGEing Start: A Quasi-experimental Trial on Pre-Op Physical Activity Intervention for Bariatric Surgery Candidates
Bibliographic record
Abstract
Abstract Introduction The American Society for Metabolic and Bariatric Surgery recommends pre- and post-operative physical activity (PA). However, there are no effective standardized PA programs incorporating a behavioral change approach for bariatric surgery patients. A novel pre-operative PA intervention ENCOURAGEing Start was developed and piloted to assist patients in reducing barriers to PA and encouraging positive PA habits. Methods This single arm pilot study recruited patients (n=27, BMI = 47.1 ± 6.2) from the Victoria General Hospital’s Centre for Metabolic and Bariatric Surgery in Winnipeg, Manitoba between September 2017 and May 2018. A time-series quasi-experimental design was used. The 16-week intervention took place at the University of Manitoba’s Active Living Centre. The primary outcome was a six-minute walk test (6MW), a measure of functional ability and predictive of post-surgical weight loss and maintenance. Secondary outcomes included fitness, cardiovascular disease risk and mental health. Outcomes were evaluated at baseline, 8 weeks, and 16 weeks. Results Ten patients completed the intervention. Clinically significant (p≤0.05) differences in the 6MW (457.21 vs 497.58 m, p=0.002), indirect 1RM leg press (283.72 vs 331.60 lb, p<0.001), sit-to-stand (12.78 vs 14.82, p<0.01), and quality of life (181.89 vs 195.96, p=0.028) were identified for completers. Conclusions The ENCOURAGEing Start intervention enhanced markers linked to long-term post-surgery outcomes, including a 10.7% increase in 6MW. This feasible program showed similar effect size to more resource intensive interventions, including those in Canada. A larger study with a minimum of 55 participants should be undertaken to assess the sustainability of these effects.
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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 | 0.003 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.009 | 0.001 |
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".