For school-age children to live with health and vitality in modern society, they need suitable physical strength and athletic ability, and measurements of physical strength and athletic ability that assesses those abilities are often considered essential. To address the problem of declining physical strength in recent years, City O has adopted an action plan. This action plan was established from a continuous 7-year survey of physique, physical strength, and athletic ability in fifth grade elementary school students and second year junior high school students. This study, to assess the effectiveness of City O's action plan, examined whether the trends in physical strength and athletic ability over those 7 years were rising or falling by analyzing the changes over time. The system adopted in this action plan is to measure the same items as in the physical strength and athletic ability survey conducted by the Ministry of Education, Culture, Sports, Science and Technology. From the results it is thought that an increase in exercise time was one factor in increased physical strength in City O. Behind this increase in exercise time was an increase in the percentage of children who belonged to a school team or sports club, and an increase in the percentage who responded that "Physical education class is fun." Above all was that action plans were included in the annual programs of all elementary and junior high schools in City O. and intentionally and systematically implemented. Therefore, in the system for increased physical strength and athletic ability based on the action plan of City O, exercise and physical activity time is ensured with participation in school teams or sports clubs. Furthermore, it is recognized that increasing the percentage of students who say that "physical education class is fun" was effective in raising the total score for physical strength and athletic ability over time. Particularly in second year junior high school girls, it would seem that the optimal valid physical strength of City O junior high school students could be advocated as a model for improving physical strength and athletic ability.
For school-age children to lead healthy lives, they need suitable physical abilities for those lives. Together with this, measurements of physical strength and motor ability to assess those abilities could be considered essential. The physical strength of children has declined in recent years, and City O in the Kansai area of Japan has implemented an action plan to address the problem. This action plan was developed from a survey continued over seven years of the physique, physical strength, and motor abilities of fifth grade elementary school students and second year junior high school (seventh grade) students. To assess the efficacy of City O's action plan, this study analyzed trends in strength and motor ability over seven years to examine whether trends were rising or falling. The method adopted for this plan was to measure the same items as those in the strength and motor ability survey conducted by the Ministry of Education, Culture, Sports, Science and Technology. The wavelet interpolation model was applied to the multi-year trends in the results obtained over seven years to examine whether they were improving or declining. An improving trend was seen with time in the physical strength and motor ability of second-year junior high school girls. One may infer that behind the improving trend over time were the effects from City O's action plan. The background for the improving trend seen over the years seen in second year junior high school girls but not boys may include that girls were originally less active than boys and but were encouraged to be active by the action plan. Because the second year of junior high school is the period of late puberty for girls, and is a time when they are approaching their developmental peak in physical strength, it may be inferred that the increase in physical strength was affected by factors in the action plan. In this study, a new evaluation chart that considers trends over years was established using the wavelet interpolation model, and the efficacy of the multi-year span evaluation chart for physical strength is presented as the O model.
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