. The largest bias for both the 5- and 10-s time thresholds compared to the criterion 1-s time threshold occurred within the “Locomotion Movement” Posture domain (−5.0 min and 18.7 min respectively) and the “Other Behavior” behavior domain (−2.1 min and 15.4 min respectively). No biases were
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Impact of Continuous Focal Sampling Time Thresholds on Physical Activity Metrics When Using Video-Recorded Direct Observation
Julian Martinez, John Staudenmayer, and Scott J. Strath
The Intrinsic Properties of ActiGraph Counts and Alternatives
Jan Christian Brønd, Niels Christian Møller, and Anders Grøntved
reaction force (GRF) and internal forces (moving body segments). During the locomotion peak, GRF increases linearly with speed and is influenced by body weight, locomotion style, and loading rate ( Keller et al., 1996 ). Interestingly, the metabolic cost of locomotion is to some extent linear for walking
Evaluation of Within- and Between-Site Agreement for Direct Observation of Physical Behavior Across Four Research Groups
Sarah Kozey Keadle, Julian Martinez, Scott J. Strath, John Sirard, Dinesh John, Stephen Intille, Diego Arguello, Marcos Amalbert-Birriel, Rachel Barnett, Binod Thapa-Chhetry, Melanna Cox, John Chase, Erin Dooley, Rob Marcotte, Alexander Tolas, and John W. Staudemayer
Physical Activities ( Ainsworth et al., 2011 ) for each whole-body movement or activity type, and categorized based on standard adult physical activity; (d) intensity categories (“sedentary,” “light,” “moderate,” and “vigorous”); and (e) locomotion (“yes” or “no”) was assigned to each event (“yes
Physical Activity, Sedentary Behavior, and Time in Bed Among Finnish Adults Measured 24/7 by Triaxial Accelerometry
Pauliina Husu, Kari Tokola, Henri Vähä-Ypyä, Harri Sievänen, Jaana Suni, Olli J. Heinonen, Jarmo Heiskanen, Kaisu M. Kaikkonen, Kai Savonen, Sami Kokko, and Tommi Vasankari
-Keadle, Staudenmayer, & Freedson, 2017 ; van der Velde et al., 2017 ), but their utility in sleep assessment remains questionable. The hip-worn accelerometer is not ideal for sleep assessment either, but it can capture both locomotion and most other large body movements in various activities with better accuracy than
From Research to Application of Wearable-Derived Digital Health Measures—A Perspective From ActiGraph
Jeremy Wyatt and Christine C. Guo
-paced locomotion . Medicine & Science in Sports & Exercise, 42 ( 5 ), 971 – 976 . 10.1249/MSS.0b013e3181c29e90 LaMunion , S. , Nguyen , J. , Brychta , R. , Troiano , R. , Friedl , K. , & Chen , K. ( 2022 ). Comparing ActiGraph CentrePoint Insight Watch, GT9X Link, and wGT3X-BT accelerometers to
Accelerometer Calibration: The Importance of Considering Functionality
Scott J. Strath, Taylor W. Rowley, Chi C. Cho, Allison Hyngstrom, Ann M. Swartz, Kevin G. Keenan, Julian Martinez, and John W. Staudenmayer
intensity from minute-by-minute accelerometer data during locomotion activities in healthy adults, there has been a steady evolution of accelerometer calibration approaches to improve estimates of PA metrics. This evolution has witnessed tremendous technological progression in wearable accelerometry, and
Protocol and Data Description: The Free-Living Activity Study for Health
Paul R. Hibbing, Nicholas R. Lamoureux, Charles E. Matthews, and Gregory J. Welk
, standing with arm movement, standing/moving around a space without the purpose of energy expenditure or locomotion, moderate activity (judged to be >3.0 metabolic equivalents), and vigorous activity (judged to be above 6.0 metabolic equivalents). After coding a video, a .csv diary file can be exported from
Validity of the iPhone M7 Motion Coprocessor to Estimate Physical Activity During Structured and Free-Living Activities in Healthy Adults
Nicola K. Thomson, Lauren McMichan, Eilidh Macrae, Julien S. Baker, David J. Muggeridge, and Chris Easton
costly, require expertise in analyzing the output data, and lack real-world transferability. Nowadays, the majority of adults carry a smartphone that already contains the hardware that can measure locomotion, with 76% of the U.K. population reporting to own a smartphone in 2018 ( Taylor & Silver, 2019
Does Preoperative Pain Catastrophizing Influence Objectively Measured Physical Activity Before and After Total Knee Arthroplasty: A Prospective Cohort Study
Sara Birch, Torben Bæk Hansen, Maiken Stilling, and Inger Mechlenburg
changes in daily time spent in lying, sitting, standing, or walking from preoperative to 12 months postoperative. Brandes et al. ( 2011 ) evaluated 53 patients with an average age of 66 who underwent TKA. They found that the patients spent more time on locomotion 6 and 12 months after surgery and less
Aerobic Capacity Determines Habitual Walking Acceleration, Not Electromyography-Indicated Relative Effort
Arto J. Pesola, Timo Rantalainen, Ying Gao, and Taija Finni
, and accelerometer as estimators of energy expenditure in locomotion . Medicine and Science in Sports and Exercise, 46 ( 9 ), 1831 – 1839 . https://doi.org/10.1249/MSS.0000000000000298 10.1249/MSS.0000000000000298 Tikkanen , O. , Sipilä , S. , Kuula , A.-S. , Pesola , A. , Haakana , P
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