ackground : In several studies, the rate of bone loss over the years did not differ
between fractured and non-fractured women, and the initial bone mass was the better
predictor of postmenopausal fractures.
Before this study, there were few reports about peak bone mass and the affecting factors
of those of adolescent age in Korea.
Methods : We analysed the bone stiffness by Achilles bone densitometry of Lunar
cooperation, menstrual history, nutritional study, amount of daily activity, anthropometry in
116 female middle school students (32 in premenarche group, 84 in postmenarche group) and
31 female college students.
Results:
1) Peak bone stiffness of Korean women was relatively lower than that of whie
women(94.0% of white women).
2) The rapid increase of the bone stiffness appears to be essentially restricted to short
period (2∼3 years) of perimenarcheal age.
3) In adolescent females without menstruation, the bone stiffness was always lower than
that of those with menstruation.
4) The list of factors affecting to peak bone mass was similar to the risk factors of
postmenopausal osteoporosis; diet, menstrual status and physical activity.
5) Calcium intake in Korean women at critical age was less than the recommended daily
allowance of calcium intake in white women at same age (1200 mg/day).
Conclusion : Female bone mass does not seem to continue to substantially accumulate
until the fourth decade. To improve any program aimed at maximizint peak bone mass,
further intensive study about many factors affecting peak bone mass will be required.
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