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ERIC Number: EJ967181
Record Type: Journal
Publication Date: 2011-Dec
Pages: 5
Abstractor: ERIC
ISSN: ISSN-0270-1367
Identification of Accelerometer Nonwear Time and Sedentary Behavior
Oliver, Melody; Badland, Hannah M.; Schofield, Grant M.; Shepherd, Janine
Research Quarterly for Exercise and Sport, v82 n4 p779-783 Dec 2011
The primary aim of the current study was to investigate the accuracy of various automated rules for determining accelerometer nonwear time in a sample of predominantly desk-based office workers (using their self-reported nonwear times as a criterion). Second, the authors examined the effect of applying these rules to accelerometer data retention and classification of sedentary behaviors. The findings show that a threshold of 180 consecutive zero minutes and a 1-min allowance preceding or following the bout yielded the most accurate determination of accelerometer nonwear time in this sample. In keeping with Evenson and Terry (2009), the authors found that increasing threshold duration resulted in increased classification of sedentary time. They also found considerable individual differences in nonwear time threshold accuracy and quantification of sedentary time. In particular, accuracy of the longer bout criteria was reduced to classify (a) nonwear time in individuals who self-reported removing the belts for short periods; and (b) sedentary time in individuals whose activity patterns were more often sedentary than those who were less sedentary. (Contains 1 table.)
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: New Zealand