Criterion validity of the activPAL™ and ActiGraph for assessing children's sitting and standing time in a school classroom setting Ridley, Kate, Ridgers, Nicola D. and Salmon, Jo 2016, Criterion validity of the activPAL™ and ActiGraph for assessing children's sitting and standing time in a school classroom setting, International journal of behavioral nutrition and physical activity, vol. 13, Article number : 75, pp. 1-5, doi: 10.1186/s12966-016-0402-x. Attached Files Name Description MIMEType Size Downloads ridgers-criterionvalidity-2016.pdf Published version application/pdf 831.56KB 99 Title Criterion validity of the activPAL™ and ActiGraph for assessing children's sitting and standing time in a school classroom setting Author(s) Ridley, Kate Ridgers, Nicola D. orcid.org/0000-0001-5713-3515 Salmon, Jo orcid.org/0000-0002-4734-6354 Journal name International journal of behavioral nutrition and physical activity Volume number 13 Season Article number : 75 Start page 1 End page 5 Total pages 5 Publisher BioMed Central Place of publication London, Eng. Publication date 2016 ISSN 1479-5868 Keyword(s) accelerometry inclinometry sedentary youth Summary BACKGROUND: Few studies have investigated the accuracy of the ActiGraph (AG) GTX3 accelerometer for assessing children's sitting and standing time. The activPAL (aP) has an inclinometer function that enables it to distinguish between sitting/lying and standing; however, its accuracy for assessing sitting and standing in older children is unknown. This study validated the accuracy of these devices for estimating sitting and standing time in a school classroom against a criterion measure of direct observation (DO). FINDINGS: Forty children in grades 5-7 wore both devices while being video recorded during two school lessons. AG and aP data were simultaneously collected in 15-s epochs. Individual participant DO and aP data were recorded as total time spent sitting/lying, standing and stepping. AG data were converted into time spent sitting and standing using previously established cut-points. Compared with DO, the aP underestimated sitting time (mean bias = -1.9 min, 95 % LoA = -8.9 to 5.2 min) and overestimated standing time (mean bias = 1.8 min, 95% LoA = -9.6 to 13.3 min). The best-performing AG cut-point across both sitting and standing (<75 counts/15 s) was more accurate than the aP, underestimating sitting time (mean bias = -0.8 min, 95 % LoA = -10.5 to 9.9 min) and standing time (mean bias = -0.4 min, 95% LoA = -9.8 to 9.1 min), but was less precise as evidenced by wider LoAs and poorer correlations with DO (sitting r = 0.86 aP vs 0.80 AG; standing r = 0.78 aP vs 0.60 AG). CONCLUSIONS: The aP demonstrated good accuracy and precision for assessing free-living sitting and standing time in classroom settings. The AG was most accurate using a cut-point of < 75 counts/15 s. Further studies should validate the monitors in settings with greater inter- and intra-individual variation in movement patterns. Language eng DOI 10.1186/s12966-016-0402-x Field of Research 110699 Human Movement and Sports Science not elsewhere classified Socio Economic Objective 920401 Behaviour and Health HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2016, The Authors Free to Read? Yes Use Rights Persistent URL http://hdl.handle.net/10536/DRO/DU:30084892 Document type: Journal Article Collections: Faculty of Health School of Exercise and Nutrition Sciences Institute for Physical Activity and Nutrition Open Access Collection Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au. Versions Version Filter Type Wed, 13 Jul 2016, 16:16:55 EST Thu, 14 Jul 2016, 05:01:03 EST Thu, 14 Jul 2016, 06:10:51 EST Thu, 25 Aug 2016, 14:39:33 EST Wed, 09 Nov 2016, 11:10:05 EST Wed, 09 Nov 2016, 11:50:02 EST Thu, 24 Nov 2016, 05:05:40 EST Mon, 28 Nov 2016, 13:27:24 EST Mon, 28 Nov 2016, 13:35:41 EST Mon, 28 Nov 2016, 13:37:06 EST Mon, 09 Jan 2017, 10:12:33 EST Fri, 07 Sep 2018, 12:16:28 EST Filtered Full Citation counts:   Cited 22 times in TR Web of Science Cited 20 times in Scopus Search Google Scholar Access Statistics: 480 Abstract Views, 100 File Downloads  -  Detailed Statistics Created: Wed, 13 Jul 2016, 16:16:55 EST

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