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Reliability of Accelerometry-Based Activity Monitors: A Generalizability Study

Reliability of Accelerometry-Based Activity Monitors: A Generalizability Study Reliability of Accelerometry-Based Activity Monitors: A Generalizability Study 1 1 2 GREGORY J. WELK , JODEE A. SCHABEN , and JAMES R. MORROW, JR. 1 2 Iowa State University, Ames, IA; and University of North Texas, Denton, TX ABSTRACT WELK, G. J., J. A. SCHABEN, and J. R. MORROW, JR. Reliability of Accelerometry-Based Activity Monitors: A Generalizability Study. Med. Sci. Sports Exerc., Vol. 36, No. 9, pp. 1637–1645, 2004. Introduction: Numerous studies have examined the validity of accelerometry-based activity monitors but few studies have systematically studied the reliability of different accelerometer units for assessing a standardized bout of physical activity. Improving understanding of error in these devices is an important research objective because they are increasingly being used in large surveillance studies and intervention trials that require the use of multiple units over time. Methods: Four samples of college-aged participants were recruited to collect reliability data on four different accelerometer types (CSA/MTI, Biotrainer Pro, Tritrac-R3D, and Actical). The participants completed three trials of treadmill walking (3 mph) while wearing multiple units of a specific monitor type. For each trial, the participant completed a series of 5-min bouts of walking (one for each monitoring unit) with 1-min of standing rest http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Medicine & Science in Sports & Exercise Wolters Kluwer Health

Reliability of Accelerometry-Based Activity Monitors: A Generalizability Study

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References (48)

ISSN
0195-9131
eISSN
1530-0315
DOI
10.1249/01.MSS.0000074670.03001.98
Publisher site
See Article on Publisher Site

Abstract

Reliability of Accelerometry-Based Activity Monitors: A Generalizability Study 1 1 2 GREGORY J. WELK , JODEE A. SCHABEN , and JAMES R. MORROW, JR. 1 2 Iowa State University, Ames, IA; and University of North Texas, Denton, TX ABSTRACT WELK, G. J., J. A. SCHABEN, and J. R. MORROW, JR. Reliability of Accelerometry-Based Activity Monitors: A Generalizability Study. Med. Sci. Sports Exerc., Vol. 36, No. 9, pp. 1637–1645, 2004. Introduction: Numerous studies have examined the validity of accelerometry-based activity monitors but few studies have systematically studied the reliability of different accelerometer units for assessing a standardized bout of physical activity. Improving understanding of error in these devices is an important research objective because they are increasingly being used in large surveillance studies and intervention trials that require the use of multiple units over time. Methods: Four samples of college-aged participants were recruited to collect reliability data on four different accelerometer types (CSA/MTI, Biotrainer Pro, Tritrac-R3D, and Actical). The participants completed three trials of treadmill walking (3 mph) while wearing multiple units of a specific monitor type. For each trial, the participant completed a series of 5-min bouts of walking (one for each monitoring unit) with 1-min of standing rest

Journal

Medicine & Science in Sports & ExerciseWolters Kluwer Health

Published: Sep 1, 2004

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