Abstract
Osteo sono assessment index (OSI) in the calcaneus in preschool girls aged 3-5 years was assessed using the dry-type ultrasound method. And the relative factors concerning OSI in girls were examined, especially from the standpoint of relationship with their mother's OSI. The findings are as follows.1) The significant difference of mean value for OSI was not observed among three agegroups. Age seems to not affect bone quantity in this age period, 3-5 yr.2) A close association exists between the girl's OSI and their mother's one. The impact of heredity on OSI was seemed to be large in girl aged 3-5.3) Each "physically active" and "mother's OSI" was independent factor for OSI.From the above results, the preschool girls whose OSI were low should be consider for increase their bone quantities from the early period both at kindergarten and home.
