@misc{indiciae4e235d606651,
  title = {Transtheoretical Model: examining adolescent exercise behavior.},
  author = {C R Nigg and K S Courneya},
  year = {1998},
  doi = {10.1016/s1054-139x(97)00141-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/9502009/},
  note = {Source identifier: 9502009}
}