To cite package ‘PhysicalActivity’ in publications use:

Choi L, Beck C, Liu Z, Moore R, Matthews C, Buchowski M (2021). PhysicalActivity: Process Accelerometer Data for Physical Activity Measurement. R package version 0.2-4, https://CRAN.R-project.org/package=PhysicalActivity.

Corresponding BibTeX entry:

  @Manual{,
    title = {PhysicalActivity: Process Accelerometer Data for Physical
      Activity Measurement},
    author = {Leena Choi and Cole Beck and Zhouwen Liu and Ryan Moore
      and Charles E. Matthews and Maciej S. Buchowski},
    year = {2021},
    note = {R package version 0.2-4},
    url = {https://CRAN.R-project.org/package=PhysicalActivity},
  }