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- Title
Correlations between Walking Exercise and Each of Bone Density, Muscle Volume, Fluctuation of the Center of Gravity, and Dementia in Middle-Aged and Elderly Women.
- Authors
Ikeda, Hiromi; Ishizaki, Fumiko; Shiokawa, Mitsuhisa; Aoi, Satomi; Iida, Tadayki; Chiho, Chikamura; Tamura, Noriko; Harada, Toshihide
- Abstract
Objective: We focused on the intensity of activities, using walking exercise muscle strength, and balance, which are modifiable risk factors for osteoporosis and falls in middle-aged and elderly women. Materials and Methods: The subjects were 60 healthy female volunteers (age: 61.4 ± 7.3 years) living in the City of M. We examined such women over 1 year for any correlations between the continuation of walking exercise and each of bone density (BMD), muscle volume, fluctuation of the center of gravity, with eyes opened and closed, and the evaluation of dementia. For the evaluation and measurement of physical activity levels, the subjects were divided into exercise and non-exercise groups. The BMD of lumbar vertebrae (L1-L4) and femoral necks and the leg muscle volumes were evaluated using DEXA (QDR-4500: Hologic). Results: Among those who had measured their physical activity levels over 1 year, the mean number of daily steps was 9,302. Significant positive correlations were observed between physical activity levels and each of BMD and muscle volume. Regarding bone density, the exercise group showed no significant change in the lumbar vertebrae and femoral necks at 6 months and 1 year, while the non-exercise group presented a significant decrease in the lumbar vertebrae at 1 year. The BMD of the lumbar vertebrae and femoral necks and the systemic and leg muscle volumes were significantly greater in the exercise than in the non- exercise group. The rate of presenting Romberg's sign was significantly decreased in the exercise group at 1 year. The results of dementia examination were also significantly more favorable in the exercise group. Conclusion: The results suggested the efficacy of continuing walking exercise in slowing an age-related decline in physical functions, as well as a decrease in bone density and the development of dementia.
- Subjects
JAPAN; DEMENTIA risk factors; DISEASE risk factors; OSTEOPOROSIS; RISK factors of falling down; LUMBAR vertebrae; MUSCLES; WALKING; X-ray densitometry in medicine; BONE density; DESCRIPTIVE statistics
- Publication
International Medical Journal, 2012, Vol 19, Issue 2, p154
- ISSN
1341-2051
- Publication type
Article