Study on Prevention of Osteoporosis Based on Factors Influencing Longitudinal Changes of Bone Mineral Density (BMD) over a Long Period of Time
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.20 Vol.20】
The purpose of this study was to clarify the factors influencing longitudinal changes of bone mineral density (BMD) over a long period of time for prevention of osteoporosis.
The results obtained were as follows :
・The individual longitudinal changes in BMD over a long period of time differed slightly from cross sectional changes in BMD among groups.
・The individual mean age during longitudinal BMD test over a long period of time correlated with the individual coefficients of a straight regression line on lower rate of BMD significantly (R²=0.7478, p<0.001) in women.
・The (%F/Y<1) group whose average annual lower rate of BMD is small was younger (p<0.01) in mean age and higher (p<0.05) in mean BMD than the (%F/Y≧1) group whose the same rate is large in women.
・The (%F/Y<1) group was lower in mean %Fat and higher in mean TP-value, CT-value, daily walk rate, daily Ca intake, sleeping hours than the (%F/Y≧1) group significantly (p<0.001 〜 0.05) in men and women.
These results suggested that it is important to accumulate data by periodical BMD test over a long period of time and to improve life style on exercise, nutrition, rest and recreation for prevention of osteoporosis. Especially in women, it was recognized that the improvement of BMD by continued effort from younger women is important since women's BMD tends to decrease with age.
DESCENTE SPORTS SCIENCE Vol.20/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
The results obtained were as follows :
・The individual longitudinal changes in BMD over a long period of time differed slightly from cross sectional changes in BMD among groups.
・The individual mean age during longitudinal BMD test over a long period of time correlated with the individual coefficients of a straight regression line on lower rate of BMD significantly (R²=0.7478, p<0.001) in women.
・The (%F/Y<1) group whose average annual lower rate of BMD is small was younger (p<0.01) in mean age and higher (p<0.05) in mean BMD than the (%F/Y≧1) group whose the same rate is large in women.
・The (%F/Y<1) group was lower in mean %Fat and higher in mean TP-value, CT-value, daily walk rate, daily Ca intake, sleeping hours than the (%F/Y≧1) group significantly (p<0.001 〜 0.05) in men and women.
These results suggested that it is important to accumulate data by periodical BMD test over a long period of time and to improve life style on exercise, nutrition, rest and recreation for prevention of osteoporosis. Especially in women, it was recognized that the improvement of BMD by continued effort from younger women is important since women's BMD tends to decrease with age.
DESCENTE SPORTS SCIENCE Vol.20/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Sotoyuki Usui*1, Tsutomu Nakada*2, Yasuo Katsuki*3, Ken-ichi Katsuki*3, Michio Katsuki*3 |
|---|---|
| University or institution | *1 Hokuriku Institute of Wellness and Sports Science, *2 Kagayawata Onsen Hospital of Rihabilitation, *3 Hokuriku Institute of Wellness and Sports Science |
Keywords
bone mineral density, osteoporosis, walk rate, Ca intake, sleeping hours