To cite PhysioWearable and the GGIR methodology it implements:

Matsui Y (2026). PhysioWearable: Free-Living Wearable Accelerometry for the Physio Ecosystem. R package version 0.1.0, https://github.com/x-biosignal/PhysioWearable.

van Hees V (2013). “Estimation of Daily Energy Expenditure in Pregnant and Non-Pregnant Women Using a Wrist-Worn Tri-Axial Accelerometer.” PLoS ONE, 8(4), e61691. doi:10.1371/journal.pone.0061691.

van Hees V (2014). “Autocalibration of accelerometer data for free-living physical activity assessment using local gravity and temperature.” Journal of Applied Physiology, 117(7), 738-744. doi:10.1152/japplphysiol.00421.2014.

Corresponding BibTeX entries:

  @Manual{,
    title = {PhysioWearable: Free-Living Wearable Accelerometry for the
      Physio Ecosystem},
    author = {Yusuke Matsui},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/x-biosignal/PhysioWearable},
  }

  @Article{,
    title = {Estimation of Daily Energy Expenditure in Pregnant and
      Non-Pregnant Women Using a Wrist-Worn Tri-Axial Accelerometer},
    author = {Vincent T. {van Hees}},
    journal = {PLoS ONE},
    year = {2013},
    volume = {8},
    number = {4},
    pages = {e61691},
    doi = {10.1371/journal.pone.0061691},
  }

  @Article{,
    title = {Autocalibration of accelerometer data for free-living
      physical activity assessment using local gravity and
      temperature},
    author = {Vincent T. {van Hees}},
    journal = {Journal of Applied Physiology},
    year = {2014},
    volume = {117},
    number = {7},
    pages = {738-744},
    doi = {10.1152/japplphysiol.00421.2014},
  }