| Summary: | 碩士 === 高雄醫學大學 === 物理治療學系碩士班 === 105 === Background and purpose: Osteoporosis is the most common disease where low bone mass density and increases risk of fractures. Musculoskeletal system and motor control system are influenced by aging which increased posture sway, decreased strength and declined confidence of balance. The purpose of this study was to assess balance performance in elderly people with osteoporosis. Methods: A total of fifty-six elderly people participated in this study (health group: n = 28; osteoporosis group: n = 28). The participants were assessed posture control ability, physical activity balance performance, balance of confidence and lower limb muscle strength. The Biodex balance system was used to assess posture control ability. The instruments for physical activity balance performance included the Tinetti performance- oriented mobility assessment(Tinetti-POMA), the Berg Balance Scale(BBS), the Timed up and got test (TUG) and the 4-Stage Balance Test. Lower limb muscle strengths were assessed by hand held dynamometer. The Activities-Specific Balance Confidence Scale was used to assess balance confidence. Result: For posture control ability, static test with eyes open and level-10 dynamic test with eyes open were significantly higher sway in the osteoporosis group than in the healthy group (p = 0.001). For physical activity balance performance, performances of many tests were significantly worse in the osteoporosis group than in the health group (p values = 0.001 to 0.024). For the balance of confidence, the confidence was lower in the osteoporosis group than in the healthy group (94.2 ± 7.0 and 73.4 ± 16.4 for health group and osteoporosis group, respectively; p = 0.001). For lower limb muscle strength, the muscle strength was significantly lower in the osteoporosis group than in the healthy group (p < 0.003). The muscle strength of the osteoporosis group was about 70% muscle strength of the healthy group. The TUG was associated with the static test of posture control, Tinetti-POMA, BBS, balance confidence and hip abduction muscle strength (r = 0.61, -0.69, -0.82, -0.66 and -0.60, respectively). Conclusion: The balance performance of the patients with osteoporosis was poor than did the healthy people. Furthermore, the patients with osteoporosis had lower limb muscle weakness and often fear of fall for daily activity.
Key words: balance, osteoporosis, elderly people, posture control ability, balance of confidence, lower limb muscle strength.
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