Yoga for Managing Knee Osteoarthritis in Older Women: a Feasibility Study
The study hypothesized that it is feasible and safe to use Hatha yoga in older women with knee osteoarthritis (OA), and practicing Hatha yoga regularly will help reduce pain and stiffness, enhance physical function, and improving quality of sleep and quality of life in older women with knee OA.
Quality of Life
Poor Quality Sleep
Behavioral: Hatha yoga
Behavioral: Hatha Yoga
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Outcomes Assessor)
|Official Title:||A Pilot Study Testing a Hatha Yoga Exercise Program in Older Women With Knee Osteoarthritis|
- Change from baseline knee osteoarthritis (OA) symptoms at 8 weeks [ Time Frame: 8 weeks ] [ Designated as safety issue: Yes ]Primary outcome measures included: OA symptoms (e.g., pain, stiffness and physical function). They were assessed using the Western Ontario and McMaster Universities OA Index scale (LK scale 3.1) (WOMAC) and a single question that asked about the number of pain medications used per day.
- Change from baseline physical performance of the lower extremities at 8 weeks [ Time Frame: 8 weeks ] [ Designated as safety issue: Yes ]Secondary outcome measures included physical performance of the LE which was assessed using the Short Physical Performance Battery (SPPB) developed by the National Institute on Aging. The test consists of three components: repeated chair stands, balance, and timed 8" walk.
- Change from baseline Quality of Sleep at 8 weeks [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]Pittsburgh Sleep Quality Index (PSQI) was used to measured quality of sleep. A score of ≥ 5 on the PSQI total scale, which is computed as a sum of the seven subscales (e.g., sleep quality, sleep latency, sleep duration, sleep disturbance, sleep efficiency, and use sleep medication) is associated with clinically significant sleep disruptions, including insomnia and major mood disorders.
- Change from baseline quality of life at 8 weeks [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]The self-perceived quality of life was assessed using the Short Form Health Survey (SF-12) which measures both physical and mental component summary scales and the Cantril Self-Anchoring Ladder that measures both "current" and "in 5 years" using steps from 0 to 10, where "0" represents the worst possible life and "10" represents the best possible life.
- Change from baseline BMI at 8 weeks [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]BMI was calculated using the participant's weight and height.
- Feasibility measures - Retention/adherence [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]Feasibility was measured by retention and adherence rates. Participants' class attendance and exercise adherence during and 12 weeks after the yoga program. Reasons for withdrawing were documented. Exercise adherence was evaluated by the percentage of yoga sessions attended and percentage and number of days yoga was practiced at home as self-reported by the participant on a log sheet.
- Feasibility measure - Acceptability [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]Acceptability was evaluated by the participants' perceived difficulty of the yoga class, level of enjoyment, whether they would recommend the class to others with OA (yes or no). Perceived level of program difficulty and enjoyment were rated by participants after completing the yoga program using a scale of 1 - 10 where 10 represents extremely difficult and most enjoyable, respectively.
- Feasibility measure - Safety [ Time Frame: 8 weeks ] [ Designated as safety issue: Yes ]Safety was assessed by recording the type and severity of any injuries that occur from group or home-based exercise sessions.
- Feasibility measure - Recruitment [ Time Frame: 6 months ] [ Designated as safety issue: No ]The length of time it took to recruit 36 participants. Reasons for not participating in the study were collected.
|Study Start Date:||January 2011|
|Study Completion Date:||December 2011|
|Primary Completion Date:||December 2011 (Final data collection date for primary outcome measure)|
Experimental: yoga intervention
The yoga intervention received eight 60 minute weekly Hatha yoga intervention classes and asked to practice additional 30 minute yoga per day at home.
Behavioral: Hatha yoga
Hatha yoga poses that were specifically designed by a group of yoga experts for older adults with knee osteoarthritis. Program included physical poses and sequence that focus on strengthening the lower extremities, and relaxation techniques.
wait list control
The wait list control group received the same 8-week Hatha yoga intervention involving group and home-based exercise sessions after the yoga intervention group completed the intervention at the end of 8 weeks.
Behavioral: Hatha Yoga
The same intervention was provided to the wait-list control group at the end of 8 weeks when the intervention completed their intervention classes.
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|United States, Minnesota|
|University of Minnesota|
|Minneapolis, Minnesota, United States, 55455|