Recruiting adults with osteoarthritis into an aquatic exercise class: strategies for a statewide intervention

Evaluation of an Arthritis Communication Campaign to Promote Physical Activity in Two Cities

Two communications campaigns (a “standard” campaign and an “enhanced” campaign linked to a physical activity opportunity) are evaluated to increase physical activity among people with arthritis. A pre- (n = 295) and post- (n = 806) intervention random sample telephone survey is conducted in two cities to measure the population effect of the campaigns. There are no changes in overall message awareness, beliefs, or behaviors related to physical activity and arthritis management in either city. Significant changes in message awareness and exercise frequency are found in subgroups in both cities, but the results do not show an advantage to enhancing the campaign with a local physical activity opportunity. An inability to saturate the market may partly explain why no overall significant increase in message awareness is found after the campaign. A high level of message awareness among respondents before the campaign may also have made it more difficult to affect measured outcomes.

Effectiveness of aquatic exercise for obese patients with knee osteoarthritis: a randomized controlled trial

OBJECTIVE

To design an aquatic exercise (AQE) and land-based exercise (LBE) program to enhance knee function and reduce body fat in patients with obesity and knee osteoarthritis and to investigate the effectiveness of AQE and LBE on body fat, functional fitness, and functional status.

SETTING

Outpatient clinic at a Seoul National University Bundang Hospital.

PARTICIPANTS

Obese patients with knee osteoarthritis were recruited from patients who visited the rehabilitation, orthopedic surgery, and geriatric outpatient clinics at the hospital. Study participants were limited to those who met the following criteria: body mass index more than 25 kg/m(2), abdominal circumference more than 90 cm (men) or 85 cm (women), clinically diagnosed osteoarthritis with Kellgren-Lawrence scale 2 or higher on radiographic studies, and independent ambulation state.

METHODS

Participants were randomly allocated into 3 groups: AQE (n = 26), LBE (n = 25), and the control group (n = 24). Exercise interventions were conducted 3 times a week for 8 weeks.

OUTCOME MEASURES

Body fat analysis, brief pain inventory, Western Ontario and McMaster Universities' osteoarthritis index, Short Form-36 questionnaire, and knee isokinetic tests were evaluated to assess changes in body fat composition, pain, physical function, and quality of life before and after the exercise program.

RESULTS

Although no significant difference was found in general characteristics among the 3 groups before exercise, body fat proportion in the AQE group decreased significantly (mean +/- SD, from 34.4 +/- 4.7 to 33.3 +/- 4.7; P = .031) after intervention. The body mass index was slightly reduced after intervention, but it was not statistically significant. The AQE group showed significant improvements in pain, disability, and quality of life. Notably, the change in pain interference in the AQE group (mean +/- SD, from 25.8 +/- 15.1 to 18.8 +/- 13.1; P = .009) was greater than that of the LBE group. Both exercise groups showed significant improvements in Western Ontario and McMaster Universities' osteoarthritis index disability compared with the control group.

CONCLUSIONS

AQE had an advantage in controlling the interference with activity because of pain. AQE may be an effective tool for patients with obesity who have difficulties with active exercise due to knee osteoarthritis.

Perceptions of Trained Leaders on Improving the Public Health Impact of Three Arthritis Foundation Programs

The Arthritis Foundation (AF) offers effective community-based programs to help manage arthritis, including aquatic, exercise, and self-help programs. Trained leaders can facilitate the adoption, maintenance, and reach of these programs and thus the impact on public health. This study identifies reasons for becoming AF aquatic, exercise, and/or self-help program leaders, AF program reach, and adoption and maintenance challenges encountered by individuals after being trained. Researchers interviewed by telephone 72 participants who attended an AF leader training workshop. Participants reported various reasons for becoming program leaders (e.g., a wish to help others). AF programs were mainly adopted and maintained in urban communities and in fitness/ health clubs, medical centers, or senior centers. Aquatics programs were the most frequently offered, and all programs had low reach (with a mean number of participants of 14.41, 12.50, and 11.00 for aquatic programs, exercise programs, and self-help programs, respectively. Challenges to adopting and maintaining programs include the time of year (e.g., winter, holidays) and lack of a facility to offer the program.

Effects of different stretching techniques on the outcomes of isokinetic exercise in patients with knee osteoarthritis

We recruited 132 subjects with bilateral knee osteoarthritis (Altman Grade II) to compare the effects of different stretching techniques on the outcomes of isokinetic muscle strengthening exercises. Patients were randomly divided into four groups (I-IV). The patients in Group I received isokinetic muscular strengthening exercises, Group II received bilateral knee static stretching and isokinetic exercises, Group III received proprioceptive neuromuscular facilitation (PNF) stretching and isokinetic exercises, and Group IV acted as controls. Outcomes were measured by changes in Lequesne's index, range of knee motion, visual analog pain scale, and peak muscle torques during knee flexion and extension. Patients in all the treated groups experienced significant reductions in knee pain and disability, and increased peak muscle torques after treatment and at follow-up. However, only patients in Groups II and III had significant improvements in range of motion and muscle strength gain during 60 degrees/second angular velocity peak torques. Group III demonstrated the greatest increase in muscle strength gain during 180 degrees/second angular velocity peak torques. In conclusion, stretching therapy could increase the effectiveness of isokinetic exercise in terms of functional improvement in patients with knee osteoarthritis. PNF techniques were more effective than static stretching.

Recruitment strategies and costs for a community-based physical activity program

A community-based participatory research project using social marketing strategies was implemented to promote physical activity among women aged 35 to 54 who were insufficiently active or completely inactive. A variety of media were used to disseminate messages about how to enroll in Step Up. Step Out! This article describes the effectiveness and cost of the recruitment strategies and lessons learned in recruiting the women. Of the total inquiries (n = 691), 430 women were eligible and enrolled in the program. Based on data from questionnaires, the most effective method of recruiting women into Step Up. Step Out! was word of mouth (36%). Newspaper ads accounted for 29% of the women's responses. The least effective method was billboards. Mass media was not as effective in recruiting women for the program as interpersonal efforts such as word of mouth. Interpersonal efforts are a valuable and possibly underrated recruitment and promotion tool.

Influence of various recruitment strategies on the study population and outcome of a randomized controlled trial involving patients with osteoarthritis of the hip or knee

OBJECTIVE

To examine the effect of 2 different recruitment methods on the characteristics of participants with osteoarthritis (OA) of the hip or knee and on the efficacy of an exercise program.

METHODS

In a clinical trial on the effectiveness of exercise therapy in OA of the hip or knee, 2 groups of patients were recruited: one group through referrals by physiotherapists (PT group, n = 110) and one group invited by newspaper articles (NP group, n = 90). At baseline, demographic, clinical, and psychosocial data were collected and compared between the 2 groups using chi-square and Student's t-tests. After 13 weeks of exercise therapy and followup assessments at weeks 39 and 65, the main outcome measures (pain, physical function, and global perceived effect) were assessed and compared by multiple regression analysis.

RESULTS

The NP group reported less pain and tiredness at baseline, although more joints were affected with osteoarthritis. The PT group scored higher on the scale 'powerful-others' of locus of control. After adjusting for baseline differences, the effect of treatment after 13, 39, and 65 weeks was comparable for both groups for all outcome measures.

CONCLUSION

Recruitment method affects clinical characteristics and physical functioning of patients recruited for the study. A mix of recruitment strategies does not seem to affect treatment outcome, on the condition that adjustments are made for baseline differences.

Does adherence make a difference? Results from a community-based aquatic exercise program

BACKGROUND

Evidence exists demonstrating the benefits of exercise for people with osteoarthritis, but little is known about whether exercise programs are effective, that is, whether the benefits of exercise can be seen in "real life" programs for "normal" people under nonlaboratory conditions.

OBJECTIVE

To identify characteristics of and outcomes for participants who adhere to a community-based aquatic exercise program.

METHOD

Two hundred and forty-nine adults with osteoarthritis were recruited from Washington State for randomization to a 20-week Arthritis Foundation aquatic exercise program (n = 125) or a wait-list control group (n = 124). Adherers were defined as those attending at least two classes per week for 16 of 20 weeks. Measures included: Quality of Well Being Scale, Health Assessment Questionnaire, Center for Epidemiological Studies-Depression Scale, and a single arthritis quality of life rating-item.

RESULTS

Baseline to postintervention change scores revealed that treatment-group adherers (N = 35) reported improved quality of well-being, physical function, and change in arthritis quality of life compared to controls (N = 124). When comparing treatment-group adherers (N = 35) to treatment-group nonadherers (N = 67), quality of well-being and depressed mood improved for adherers, but not for nonadherers.

CONCLUSION

When analyzed for level of participation, exercise benefits adults with osteoarthritis. Consistent participation in exercise programs results in better outcomes. Improved methods are needed to enhance adherence, with increased attention to the role of intrinsic factors such as self-efficacy and belief systems.

Use of alternative therapies by older adults with osteoarthritis

OBJECTIVE

To examine the rates of use and expenditures on alternative therapies by adults with osteoarthritis (OA).

METHODS

Adults with OA recruited from the community to participate in a randomized clinical trial recorded alternative and traditional health care use on postcard diaries. General and arthritis-specific quality of life was assessed by questionnaires.

RESULTS

More than 47% of participants reported using at least one type of alternative care during the 20-week intervention period. Among alternative care consumers, the most commonly used treatments were massage therapy (57%), chiropractic services (20.7%), and nonprescribed alternative medications (17.2%). Four percent of subjects reported using only alternative care during the study period. Expenditures for alternative therapy averaged $1,127 per year, compared with $1,148 for traditional therapies.

CONCLUSION

Use of and expenditures for alternative care were high among this cohort of older adults with OA. Clinicians may want to inquire about use of these therapies before recommending treatments for this condition.

Managing arthritis with exercise

Almost half of all older adults have arthritis, either degenerative or inflammatory. Regular exercise is an important therapeutic intervention for all types of arthritis. Specifically, regular exercise can prevent deconditioning of the muscles, keep the joints stable, improve joint function and flexibility, decrease pain, enhance aerobic fitness, improve balance, and decrease falls. A comprehensive exercise program should include stretching exercises followed by a range-of-motion program for joints, muscle strengthening, and aerobic exercise, if possible. Unfortunately, despite these known benefits, most older adults with arthritis do not engage in regular exercise. The Seven Step Approach was developed to provide a practical framework to help overcome barriers and improve exercise activity in older adults with arthritis.

Economic evaluation of aquatic exercise for persons with osteoarthritis

OBJECTIVES

To estimate cost and outcomes of the Arthritis Foundation aquatic exercise classes from the societal perspective.

DESIGN

Randomized trial of 20-week aquatic classes. Cost per quality-adjusted life year (QALY) gained was estimated using trial data. Sample size was based on 80% power to reject the null hypothesis that the cost/QALY gained would not exceed $50,000.

SUBJECTS AND METHODS

Recruited 249 adults from Washington State aged 55 to 75 with a doctor-confirmed diagnosis of osteoarthritis to participate in aquatic classes. The Quality of Well-Being Scale (QWB) and Current Health Desirability Rating (CHDR) were used for economic evaluation, supplemented by the arthritis-specific Health Assessment Questionnaire (HAQ), Center for Epidemiologic Studies-Depression Scale (CES-D), and Perceived Quality of Life Scale (PQOL) collected at baseline and postclass. Outcome results applied to life expectancy tables were used to estimate QALYs. Use of health care facilities was assessed from diaries/questionnaires and Medicare reimbursement rates used to estimate costs. Nonparametric bootstrap sampling of costs/QALY ratios established the 95% CI around the estimates.

RESULTS

Aquatic exercisers reported equal (QWB) or better (CHDR, HAQ, PQOL) health-related quality of life compared with controls. Outcomes improved with regular class attendance. Costs/QALY gained discounted at 3% were $205,186 using the QWB and $32,643 using the CHRD.

CONCLUSION

Aquatic exercise exceeded $50,000 per QALY gained using the community-weighted outcome but fell below this arbitrary budget constraint when using the participant-weighted measure. Confidence intervals around these ratios suggested wide variability of cost effectiveness of aquatic exercise.