新型コロナウィルス感染症の流行前後における中学生の体力に関する縦断的研究

抄録

  This study performed a longitudinal analysis of the difference in physical fitness between junior high school students who experienced school closures due to the COVID-19 pandemic (the “COVID-19 pandemic experienced group”) and junior high school students who did not (the control group). The COVID-19 pandemic experienced group comprised 90 first-year junior high school students, whose physical fitness was measured in May 2019 during their first year of junior high school, May 2020 during their second year of junior high school, and May 2021 during their third year of junior high school. The control group comprised 92 first-year junior high school students, whose physical fitness was measured in May 2017 during their first year of junior high school, May 2018 during their second year of junior high school, and May 2019 during their third year of junior high school. For each measurement item, a two-factor analysis of variance was performed ([COVID-19 pandemic experienced group, the control group] × measurement time [first year of junior high school, second year of junior high school, third year of junior high school]). For both boys and girls, no significant interaction was observed for height, weight, BMI, grip strength, sitting upright, sitting forward bending, repetitive side jump, 20 m shuttle run, 50 m run, standing long jump, or handball throw. Therefore, no difference in development was observed for height, weight, BMI, muscle strength, muscular endurance, flexibility, agility, general endurance, speed, explosive power, or dexterity between the COVID-19 pandemic group and control group for both boys and girls.