@article{sun-hee kim2023of,
  title={Perceptions of health status, physical fitness, and participation in physical activity among adolescents before and after COVID-19: analysis of 2019‑2021 data from the Republic of Korea national sports survey},
  author={seung-man lee,il-han seo,sun-hee kim,tai-hyung kim},
  journal={Journal of Men's Health},
  volume={19},
  number={3},
  pages={22--28},
  doi = {10.22514/jomh.2023.027},
  year={2023}
}