Japan Aims Female bone density rapidly decreases after menopause. To prepare menopause is important to prevent osteoporosis. Imagawa has thought resistance training is useful to maintain bone density. Independently, Mitsuhashi has made a new chemical equilibrium model and thermodynamic conversion to systematically estimate human cholesterol level. We collaborated to experimentally use Mitsuhashi's method to evaluate the relation of body composition and health-related physical fitness to

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... s osteoporosis sonoassesment index(OSI). Methods The method was applied to female SPS data. Young adult women, age 20 to 44, visited SPS from April 1 1998 to March 31 2016. 1530 women for Lean body mass, 1378 women for PWC75%HRmax, and 1495 women for OSI were included. All raw data were converted deviation value (dev.), which was essential to use the method. Results Correlation coefficient between dev.OSI divided by dev.LDL.C and dev.PWC75%HRmax divided by dev.LDL.C was 0.783, and between dev.OSI divided by dev.LDL.C and dev.Lean body mass divided by dev.LDL.C was 0.752. Focused on deviation range from 40 to 60, correlation coefficient between dev.OSI divided by dev.LDL.C and dev.PWC75%HRmax divided by dev.LDL.C was 0.709. Conclusion By using Mitsuhashi's method, significant correlation coefficient could be found. All cause of mistakes in this article are attributed only to Mitsuhashi.