The Effect of Trunk Muscle Biofeedback Training on Functional Forward Reach Performance in Women with Osteoporosis or Osteopenia

軀幹肌肉生物回饋訓練對骨質疏鬆或骨質缺乏婦女功能性前伸表現之影響

蘇姵宇(Pei-Yu Su) ； 曹昭懿(Jau-Yih Tsauo) ； 楊榮森(Rong-Sen Yang) ； 徐瑋勵(Wei-Li Hsu)

《物理治療》 42卷2期 (2017/06) Pp. 143-144

https://doi.org/10.6215/FJPT.2017.73.O15

摘要

Background and Purpose: Patients with osteoporosis or osteopenia often have thoracic hyperkyphotic posture, which may lead to decreased gait and balance performance, increasing the risk of fall and fracture. Trunk muscle stabilization exercise is usually used to correct the hyperkyphotic posture. However, people with thoracic hyperkyphotic posture might use lumbar hyperlordosis strategy when performing prone extension exercise, which could lead to low back pain and increase risk of compression fracture. Electromyography biofeedback has been proved able to alter muscle activation pattern. Functional forward reach is a common clinical dynamic balance test, which indicates the balance ability during a functional task, and also can be used for fall risk prediction in older adults. Therefore, the purpose of this research is to investigate the effect of trunk muscle biofeedback training on functional forward reach performance in women with osteoporosis or osteopenia. Methods: This study included 7 women with osteoporosis or osteopenia. Participants received a trunk muscle biofeedback training twice a week for six weeks. Functional forward reach performance was evaluated by a motion analysis system (Vicon, Bonita, UK) and a force plate (AMTI, USA). Kinematic data and kinetic data, including reach distance, peak velocity, total excursion of center of pressure in anteroposterior (TOTEX-AP) and mediolateral direction (TOTEX-ML), were analyzed by paired-t test. Results: Both of reach distance (p = 0.019) and peak velocity (p = 0.041) were significantly increased after training. For the kinetic data, both TOTEX-AP and TOTEX-ML showed increasing trends, but did not reach statistical significance (p = 0.245 and 0.175, respectively). Conclusion: Trunk muscle biofeedback training can improve functional forward reach distance and peak velocity. There is also an increasing trend in displacement of center of pressure during forward reach test. Clinical Relevance: The result suggests that trunk muscle biofeedback training can improve the functional forward reach performance in women with osteoporosis or osteopenia, and may decrease the risk of fall in the future.