Original Research
Validity of the Garmin Vivofit Jr. to Measure Physical Activity During a Youth After-School Program
Karissa L. Peyer, Kara C. Hamilton
Page: 61–68
DOI: 10.1123/jmpb.2021-0039
Concurrent Agreement Between ActiGraph and activPAL for Measuring Physical Activity in Pregnant Women and Office Workers
Melissa A. Jones, Sara J. Diesel, Bethany Barone Gibbs, Kara M. Whitaker
Page: 69–75
DOI: 10.1123/jmpb.2021-0050
Validity of a Novel Algorithm to Detect Bedtime, Wake Time, and Sleep Time in Adults
Kyle R. Leister, Jessica Garay, Tiago V. Barreira
Page: 76–84
DOI: 10.1123/jmpb.2021-0027
ActiGraph Cutpoints Impact Physical Activity and Sedentary Behavior Outcomes in Young Children
Becky Breau, Hannah J. Coyle-Asbil, Jess Haines, David W.L. Ma, Lori Ann Vallis, on behalf of the Guelph Family Health Study
Page: 85–96
DOI: 10.1123/jmpb.2021-0042
Comparison of activPAL and Actiwatch for Estimations of Time in Bed in Free-Living Adults
Mary C. Hidde, Kate Lyden, Josiane L. Broussard, Kim L. Henry, Julia L. Sharp, Elizabeth A. Thomas, Corey A. Rynders, Heather J. Leach
Page: 97–102
DOI: 10.1123/jmpb.2021-0047
Calibrating the Physical Activity Vital Sign to Estimate Habitual Moderate to Vigorous Physical Activity More Accurately in Active Young Adults: A Cautionary Tale
Liam P. Pellerine, Derek S. Kimmerly, Jonathon R. Fowles, Myles W. O’Brien
Page: 103–110
DOI: 10.1123/jmpb.2021-0055
Validation of Body-Worn Sensors for Gait Analysis During a 2-min Walk Test in Children
Vincent Shieh, Cris Zampieri, Ashwini Sansare, John Collins, Thomas C. Bulea, Minal Jain
Page: 111–119
DOI: 10.1123/jmpb.2021-0035

Comparison of Child and Adolescent Physical Activity Levels From Open-Source Versus ActiGraph Counts
Kimberly A. Clevenger, Kelly A. Mackintosh, Melitta A. McNarry, Karin A. Pfeiffer, Alexander H.K. Montoye, Jan Christian Brønd
Page: 120–128
DOI: 10.1123/jmpb.2021-0057