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From International Journal of Clinical Rheumatology Posted: 05/12/2010; Int J Clin Rheum. 2010;5(1):37-51. © 2010 Future Medicine Ltd. Abstract
With the exponential growth of the aging segment of the population, physical therapy clinics are treating larger proportions of patients with arthritic conditions. Arthritis is a leading cause of functional restrictions and disability due to its associated pain, inflammation, cardiovascular and pulmonary involvement. These symptoms overlaid upon normal age-related declines in the musculoskeletal, neuromuscular, integumentary and cardiopulmonary systems place older adults with arthritis at higher risk of disability and loss of independence. Physical therapy interventions are recognized as an integral component of arthritis management and their benefits have been well documented. This article reviews the common findings of the physical therapy examination and evidence for physical therapy interventions for select arthritic conditions. IntroductionArthritis and musculoskeletal disorders are widespread and may result in joint pain, soft tissue contracture, restrictions in joint movement and activities of daily living, deformity, disability[1] and, in some instances, death.[2] Physiologic manifestations of arthritis, such as joint capsule thickening, inflammation, muscle atrophy and reduced cardiopulmonary reserve, are exacerbated with physical inactivity and may be compounded with side effects of pharmacotherapy. Unfortunately, approximately 70% of older adults in the USA report no regular exercise and among older adults with arthritis, the rates of leisure time physical activity are 7% lower than their healthy counterparts.[3] There are more than 100 rheumatic conditions, of which the most common form is osteoarthritis (OA). Osteoporosis may be present at any age, but is more prevalent in older adults. Polymyalgia rheumatica (PMR) presents with advancing age, while ankylosing spondylitis (AS) often presents early in life. Diseases such as systematic lupus erythematosus (SLE) and rheumatoid arthritis (RA) may present early (patients aged in their 30s and 40s) or have a late onset (age of 55 years and older). The systematic and local manifestations of these conditions are compounded by the normal aging process and influence the physical therapy management of older adults with arthritis.[2]
Normal Changes with AgingIn brief, changes with aging are evident across all systems of the human body and produce concurrent changes in physical performance over time. In the musculoskeletal system, muscle force production reaches its peak in the second and third decades of life and declines with age. Loss of motor units and reduction in muscle mass are associated with changes in protein synthesis and mitochondrial enzyme activity, leading to decreased strength.[4] Neurosensory changes result in diminished proprioception, disturbances in balance, reduced response to external challenges and increased risk of falls. In addition, cardiovascular and pulmonary systems become less efficient, resulting in declining stroke volume, vital capacity and exercise performance. Thus, older adults perform activities of daily living at a higher percentage of their physiologic reserve. However, these changes can be attenuated with exercise. A recent systematic review of 13 studies of exercise on musculoskeletal function in healthly older adults[5] reported strong evidence for the use of resistance training (three to four sets at 60–80%, one repetition maximal force production) for improving strength and muscle mass among healthy older adults. Among persons with arthritis, these recommendations require modifications to adjust for variations in physiologic condition and response to exercise, especially in light of the changes in physiologic reserve and function. Physical Therapy Interventions & ManagementPhysical therapists are licensed healthcare professionals who provide interventions to address the prevention, diagnosis and treatment of movement dysfunctions and to improve physical health and function.[6] In the USA, physical therapists earn a university degree prior to matriculating into either a professional master or doctoral degree program. This level of education is not the norm worldwide. In some countries, physical therapy education is offered at the bachelor's level. While educational requirements vary across the globe, internationally the profession of physical therapy is evolving and educational requirements for programs are advancing. Physical therapists provide interventions, such as therapeutic exercise, joint mobilization, physical modalities (e.g., heat, cold, electrical stimulation and ultrasound), gait training, assistive devices and orthotics, and combine these interventions with behavioral strategies and patient education to promote self-management and to maximize function and independence.[6] Interventions are individualized based upon a comprehensive physical examination and current pharmacologic management. Knowledge about the potential side effects of medications, as well as the latency period to effectiveness of medications, is essential when designing the intervention to ensure patient comfort and safety and to appropriately advance the regimen. Using a collaborative model of practice, physical therapists work with their patients to establish goals to decrease pain, maximize joint mobility, increase muscle strength, maintain and improve flexibility and aerobic capacity, and prevent functional loss. The following sections briefly describe the focus of the physical therapy assessment and the evidence for effectiveness of physical therapy interventions for older adults with arthritis. Adherence to ExerciseExercise and physical activity require active participation of patients and, as such, their effects are proportional to the patient's level of adherence. The literature demonstrates that adherence to short-term supervised exercise programs, defined as programs that last anywhere from 1 to 12 months, ranges from 68 to 93%. Long-term adherence rates to exercise that requires more extensive lifestyle changes are lower, in the range of 25–50%. With advancing age, adherence to exercise diminishes and is lower still among older adults with arthritis. Recent studies have examined factors associated with exercise adherence among persons with chronic pain[66] and arthritis (Table 2).[67–69] Factors associated with exercise adherence include internal factors, such as self-efficacy, prior experience with exercise, attitudes, beliefs and expectations regarding the benefits of exercise for arthritis, as well as external factors, such as providers' beliefs and attitudes toward exercise for arthritis, limited access, cost and time.[66–70] Greater frequency of exercise may be less influential than higher intensity as higher intensity exercise may result in short-term muscle soreness and stiffness. To promote adherence physical therapy interventions and maximize outcomes of care, physical therapists should integrate patients' preferences for treatments, address patients' expectations of care, and attitudes and beliefs toward interventions. Goals for treatment should be established in small increments that are attainable in the established timeframe. Clinical discussions focusing on the benefits of exercise, how to address potential barriers to exercise and modify the program promote adherence. The use of an exercise log is helpful to demonstrate progress and to record difficulties with specific exercises. Social support for exercise has also been demonstrated to increase adherence, and so it is important to encourage patients to engage the assistance of a significant other to motivate them to exercise and to link patients with community-based programs.[71] Self-management programs that target patient's beliefs, attitudes and self-efficacy for managing arthritis have proven to be effective in improving function, reducing disability and maximizing quality of life.[72–74] While physical therapists educate patients about self-management as part of their intervention, there are a plethora of community-based and internet-based, well-tested, self-management programs available to patients. The Stanford Arthritis Self-Management Program is the most well studied and successful program for persons with arthritis with demonstrated improvements in symptoms and function and reduced healthcare utilization.[72–74] Such programs are useful to augment the benefits of treatment and increase long-term compliance with management recommendations. Table 1. Onset, pathology, physical examination findings and recommended physical therapy interventions for systematic lupus erythematosus, rheumatoid arthritis, osteoarthritis, osteoporosis, ankylosing spondylitis and polymyalgia rheumatica.
BAPS: Biomechanical ankle platform system; Rep: Repetition; ROM: Range of motion. [ CLOSE WINDOW ]
Table 2. Studies of adherence to exercise in patients with arthritis.
ConclusionThe clinical manifestations and impact of arthritis is compounded by the natural changes of aging. Physical therapy interventions provide a comprehensive approach to the management of musculoskeletal conditions in older adults. While the benefits of all interventions have not been formally established, exercise and specific modalities have been demonstrated to improve patient-oriented outcomes. Initiated early and consistently, physical therapy aims to maximize function and independence and reduce impairments in older adults with arthritic conditions. Future PerspectiveWith the changing demography and growth of persons aged older than 65 years, coupled with advancing in medical therapies, we will see a stronger emphasis on evaluative research on nonpharmacologic management of older adults persons with rheumatic conditions. While the evidence is accumulating for the effectiveness of exercise in managing arthritis symptoms and improving function and quality of life, further research is needed to examine the specific impact of exercise for older adults with arthritis and to document the impact of long-term adherence to therapy. Research is needed on the effectiveness of interventions for persons with PMR and for adults with late-onset RA and SLE. Physical therapy educational programs should include more information for therapists on the types and impact of arthritis to ensure proper management of all persons with arthritis, especially older adults. References
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