Abstract
Objective
To identify predictors of poor exercise adherence in patients with osteoarthritis
(OA) and meniscal tear.
Design
Secondary analysis of data gathered over the first 12 weeks in the Meniscal Tear in
Osteoarthritis Research (MeTeOR) trial, a multicenter, randomized controlled trial.
Setting
Seven referral centers.
Participants
Most of the patients in the MeTeOR trial (N=325 of 351) were included in the analysis,
each of whom was aged ≥45 years and had a meniscal tear and osteoarthritic changes
on imaging studies; 26 were excluded because of missing data from which to derive
the primary outcome variable.
Interventions
All patients received a structured, supervised exercise program focused on strengthening,
along with prescribed home exercises; half were randomly assigned to also receive
arthroscopic partial meniscectomy.
Main Outcome Measure
Poor exercise adherence through 12 weeks, defined as performing <50% of prescribed
exercise.
Results
Thirty-eight percent of the MeTeOR cohort showed poor exercise adherence. In the multivariate
model, adjusting for treatment group, those who earned ≤$29,000 per year had 1.64
times the risk of nonadherence (95% confidence interval [CI], 1.10–2.43) than those
who earned >$100,000 per year; and those without baseline pain with pivoting and twisting
had 1.60 times greater risk of nonadherence than those with these symptoms (95% CI,
1.14–2.25).
Conclusions
Low income was associated with poor exercise adherence among patients aged ≥45 years
with OA and a meniscal tear, as was absence of pain with pivoting and twisting. Our
findings highlight the need for further research into exercise adherence and for interventions
to enhance adherence among those with low incomes.
Keywords
List of abbreviations:
APM (arthroscopic partial meniscectomy), CI (confidence interval), MeTeOR (Meniscal Tear in Osteoarthritis Research), MRI (magnetic resonance imaging), OA (osteoarthritis), PT (physical therapy), SF-36 (Medical Outcomes Study 36-Item Short-Form Health Survey)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: June 10, 2016
Footnotes
Supported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases (grant nos. R01AR05557, T32AR055885, K24AR057827, P60AR47782).
Disclosures: none.
Identification
Copyright
© 2016 by the American Congress of Rehabilitation Medicine
