@article{ hye-ryeon kim2021the,
  title={Exploring the knowledge structure of Korean physical activity research using topic modeling and keyword network analysis},
  author={so-eun lee, hye-ryeon kim,chang-hwan choi},
  journal={Journal of Men's Health},
  volume={17},
  number={4},
  pages={37--43},
  doi = {10.31083/jomh.2021.084},
  year={2021}
}