Praveen Veerabhadrappa1, Matthew Duffy Moran2, Mitchell D Renninger2, Matthew B Rhudy3, Scott B Dreisbach2, Kristin M Gift2. 1. Kinesiology, Division of Science, The Pennsylvania State University, Reading, PA, USA. pmv5057@psu.edu. 2. Kinesiology, Division of Science, The Pennsylvania State University, Reading, PA, USA. 3. Engineering, Division of Engineering, Business and Computing, The Pennsylvania State University, Reading, PA, USA.
Abstract
KEY POINTS: QUESTION: How accurate are the step counts obtained from Apple Watch? FINDINGS: In this validation study, video steps vs. Apple Watch steps (mean ± SD) were 2965 ± 144 vs. 2964 ± 145 steps; P < 0.001. Lin's concordance correlation coefficient showed a strong correlation (r = 0.96; P < 0.001) between the two measurements. There was a total error of 0.034% (1.07 steps) for the Apple Watch steps when compared with the manual counts obtained from video recordings. MEANING: Our study is one of the initial studies to objectively validate the accuracy of the step counts obtained from Apple watch at different walking speeds. Apple Watch tested to be an extremely accurate device for measuring daily step counts for adults.
KEY POINTS: QUESTION: How accurate are the step counts obtained from Apple Watch? FINDINGS: In this validation study, video steps vs. Apple Watch steps (mean ± SD) were 2965 ± 144 vs. 2964 ± 145 steps; P < 0.001. Lin's concordance correlation coefficient showed a strong correlation (r = 0.96; P < 0.001) between the two measurements. There was a total error of 0.034% (1.07 steps) for the Apple Watch steps when compared with the manual counts obtained from video recordings. MEANING: Our study is one of the initial studies to objectively validate the accuracy of the step counts obtained from Apple watch at different walking speeds. Apple Watch tested to be an extremely accurate device for measuring daily step counts for adults.
Authors: Tryntsje Fokkema; Thea J M Kooiman; Wim P Krijnen; Cees P VAN DER Schans; Martijn DE Groot Journal: Med Sci Sports Exerc Date: 2017-04 Impact factor: 5.411
Authors: Keith M Diaz; David J Krupka; Melinda J Chang; James Peacock; Yao Ma; Jeff Goldsmith; Joseph E Schwartz; Karina W Davidson Journal: Int J Cardiol Date: 2015-03-04 Impact factor: 4.164
Authors: Carol Ewing Garber; Bryan Blissmer; Michael R Deschenes; Barry A Franklin; Michael J Lamonte; I-Min Lee; David C Nieman; David P Swain Journal: Med Sci Sports Exerc Date: 2011-07 Impact factor: 5.411
Authors: Praveen Veerabhadrappa; Matthew B Rhudy; Matthew Duffy Moran; Mitchell D Renninger; Scott B Dreisbach; Kristin M Gift Journal: J Gen Intern Med Date: 2019-01 Impact factor: 5.128
Authors: Hari G Dandapani; Natalie M Davoodi; Lucie C Joerg; Melinda M Li; Daniel H Strauss; Kelly Fan; Talie Massachi; Elizabeth M Goldberg Journal: Front Digit Health Date: 2022-06-14
Authors: Honghuang Lin; Mayank Sardana; Yuankai Zhang; Chunyu Liu; Ludovic Trinquart; Emelia J Benjamin; Emily S Manders; Kelsey Fusco; Jelena Kornej; Michael M Hammond; Nicole L Spartano; Chathurangi H Pathiravasan; Vik Kheterpal; Chris Nowak; Belinda Borrelli; Joanne M Murabito; David D McManus Journal: Circ Res Date: 2020-08-26 Impact factor: 17.367
Authors: Mayank Sardana; Honghuang Lin; Yuankai Zhang; Chunyu Liu; Ludovic Trinquart; Emelia J Benjamin; Emily S Manders; Kelsey Fusco; Jelena Kornej; Michael M Hammond; Nicole Spartano; Chathurangi H Pathiravasan; Vik Kheterpal; Christopher Nowak; Belinda Borrelli; Joanne M Murabito; David D McManus Journal: J Med Internet Res Date: 2021-06-24 Impact factor: 5.428
Authors: Daniel Fuller; Emily Colwell; Jonathan Low; Kassia Orychock; Melissa Ann Tobin; Bo Simango; Richard Buote; Desiree Van Heerden; Hui Luan; Kimberley Cullen; Logan Slade; Nathan G A Taylor Journal: JMIR Mhealth Uhealth Date: 2020-09-08 Impact factor: 4.773