Bai J, Di C, Xiao L, Evenson KR, LaCroix AZ, Crainiceanu CM, Buchner DM (2016). “An activity index for raw accelerometry data and its comparison with other activity metrics.” PloS one, 11(8), e0160644.

Corresponding BibTeX entry:

  @Article{bai2016activity,
    title = {An activity index for raw accelerometry data and its
      comparison with other activity metrics},
    author = {Jiawei Bai and Chongzhi Di and Luo Xiao and Kelly R
      Evenson and Andrea Z LaCroix and Ciprian M Crainiceanu and David
      M Buchner},
    journal = {PloS one},
    volume = {11},
    number = {8},
    pages = {e0160644},
    year = {2016},
    publisher = {Public Library of Science},
  }