Open AccessEffects of Filter Choice in GT3X Accelerometer Assessments of Free-Living Activity
Author(s) -
Miriam Wanner,
Brian W. Martin,
Flurina Meier,
Nicole ProbstHensch,
Susi Kriemler
Publication year - 2013
Publication title -
medicine and science in sports and exercise
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.703
H-Index - 224
eISSN - 1530-0315
pISSN - 0195-9131
DOI - 10.1249/mss.0b013e31826c2cf1
Subject(s) - wilcoxon signed rank test , mcnemar's test , accelerometer , filter (signal processing) , population , medicine , spearman's rank correlation coefficient , physical activity , statistics , mathematics , physical therapy , computer science , mann–whitney u test , environmental health , computer vision , operating system
ActiGraph accelerometers are widely used devices to objectively assess physical activity. The GT3X version has two filter options to be selected before data assessment (normal and low-frequency extension filter option). It is not clear whether the resulting physical activity levels differ depending on the choice of the filter. The aims were to compare GT3X data collected using the different filter options during free-living activities and to establish correction factors if the results were not comparable.