2023 年 68 巻 3 号 p. 198-206
No hypotheses on physical fitness and motor ability in obesity have been clearly proven. Certainly, several studies have been reported, but none have gone beyond speculation. That is, the amount of data that should be statistically guaranteed in obese people has not been ensured. In this study, we applied the wavelet interpolation model to the secular trends in physique, physical fitness and motor ability obtained in a large-scale study over seven years from a physical fitness improvement action plan in City O, and constructed an annual span evaluation chart. The heights and physical fitness and motor ability of severely obese boys and girls in the fifth grade of elementary school, judged from a BMI aging span evaluation chart proposed by Fujii (2018), were applied to this evaluation chart. As a result, in evaluations of physical fitness and motor ability in severely obese fifth grade students, clear determinations, not conjectures, of “somewhat inferior” or “inferior” were derived for items other than grip strength and sit and reach. Thus, we propose that this study was able to establish a physical fitness and motor ability evaluation for severely obese boys and girls in the fifth grade of elementary school.