Feasibility and assessment of outcome measures for yoga as self-care for minorities with arthritis: a pilot study

BACKGROUND: While there is a growing interest in the therapeutic benefits of yoga, minority populations with arthritis tend to be under-represented in the research. Additionally, there is an absence of guidance in the literature regarding the use of multicultural teams and sociocultural health beliefs, when designing yoga studies for a racially diverse population with arthritis. This pilot study examined the feasibility of offering yoga as a self-care modality to an urban, bilingual, minority population with osteoarthritis (OA) or rheumatoid arthritis (RA), in the Washington, DC area. METHODS: The primary objective of the study was to assess the feasibility of offering an 8-week, bilingual yoga intervention adapted for arthritis to a convenience sample of primarily Hispanic and Black/African-American adults. A racially diverse interdisciplinary research team was assembled to design a study to facilitate recruitment and retention. The second objective identified outcome measures to operationalize potential facilitators and barriers to self-care and self-efficacy. The third objective determined the feasibility of using computer-assisted self-interview (CASI) for data collection. RESULTS: Enrolled participants (n = 30) were mostly female (93%), Spanish speaking (69%), and diagnosed with RA (88.5%). Feasibility was evaluated using practicality, acceptability, adaptation, and expansion of an arthritis-adapted yoga intervention, modified for this population. Recruitment (51%) and participation (60%) rates were similar to previous research and clinical experience with the study population. Of those enrolled, 18 started the intervention. For adherence, 12 out of 18 (67%) participants completed the intervention. All (100%), who completed the intervention, continued to practice yoga 3 months after completing the study. Using nonparametric tests, selected outcome measures showed a measurable change post-intervention suggesting appropriate use in future studies. An in-person computerized questionnaire was determined to be a feasible method of data collection. CONCLUSIONS: Findings from this pilot study confirm the feasibility of offering yoga to this racially/ethnically diverse population with arthritis. This article provides recruitment/retention rates, outcome measures with error rates, and data collection recommendations for a previously under-represented population. Suggestions include allocating resources for translation and using a multicultural design to facilitate recruitment and retention. TRIAL REGISTRATION: ClinicalTrials.gov, NCT01617421