著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Alejandro López-Valenciano and David Suárez-Iglesias and Miguel A. Sanchez-Lastra and Carlos Ayán,Impact of COVID-19 Pandemic on University Students' Physical Activity Levels: An Early Systematic Review,Frontiers in Psychology,1664-1078,Frontiers Media SA,2021-01-15,11,,,https://cir.nii.ac.jp/crid/1360580236831602816,https://doi.org/10.3389/fpsyg.2020.624567