Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE)

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dc.contributor.authorTudor-Locke, Catrine
dc.contributor.authorBarreira, Tiago V
dc.contributor.authorSchuna, John M
dc.contributor.authorMire, Emily F
dc.contributor.authorChaput, Jean-Philippe
dc.contributor.authorFogelholm, Mikael
dc.contributor.authorHu, Gang
dc.contributor.authorKuriyan, Rebecca
dc.contributor.authorKurpad, Anura
dc.contributor.authorLambert, Estelle V
dc.contributor.authorMaher, Carol
dc.contributor.authorMaia, José
dc.contributor.authorMatsudo, Victor
dc.contributor.authorOlds, Tim
dc.contributor.authorOnywera, Vincent
dc.contributor.authorSarmiento, Olga L
dc.contributor.authorStandage, Martyn
dc.contributor.authorTremblay, Mark S
dc.contributor.authorZhao, Pei
dc.contributor.authorChurch, Timothy S
dc.contributor.authorKatzmarzyk, Peter T
dc.date.accessioned2015-07-30T03:59:19Z
dc.date.available2015-07-30T03:59:19Z
dc.date.issued2015-02-11
dc.date.updated2015-02-14T19:02:10Z
dc.description.abstractAbstract Background We compared 24-hour waist-worn accelerometer wear time characteristics of 9–11 year old children in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) to similarly aged U.S. children providing waking-hours waist-worn accelerometer data in the 2003–2006 National Health and Nutrition Examination Survey (NHANES). Methods Valid cases were defined as having ≥4 days with ≥10 hours of waking wear time in a 24-hour period, including one weekend day. Previously published algorithms for extracting total sleep episode time from 24-hour accelerometer data and for identifying wear time (in both the 24-hour and waking-hours protocols) were applied. The number of valid days obtained and a ratio (percent) of valid cases to the number of participants originally wearing an accelerometer were computed for both ISCOLE and NHANES. Given the two surveys’ discrepant sampling designs, wear time (minutes/day, hours/day) from U.S. ISCOLE was compared to NHANES using a meta-analytic approach. Wear time for the 11 additional countries participating in ISCOLE were graphically compared with NHANES. Results 491 U.S. ISCOLE children (9.92±0.03 years of age [M±SE]) and 586 NHANES children (10.43 ± 0.04 years of age) were deemed valid cases. The ratio of valid cases to the number of participants originally wearing an accelerometer was 76.7% in U.S. ISCOLE and 62.6% in NHANES. Wear time averaged 1357.0 ± 4.2 minutes per 24-hour day in ISCOLE. Waking wear time was 884.4 ± 2.2 minutes/day for U.S. ISCOLE children and 822.6 ± 4.3 minutes/day in NHANES children (difference = 61.8 minutes/day, p < 0.001). Wear time characteristics were consistently higher in all ISCOLE study sites compared to the NHANES protocol. Conclusions A 24-hour waist-worn accelerometry protocol implemented in U.S. children produced 22.6 out of 24 hours of possible wear time, and 61.8 more minutes/day of waking wear time than a similarly implemented and processed waking wear time waist-worn accelerometry protocol. Consistent results were obtained internationally. The 24-hour protocol may produce an important increase in wear time compliance that also provides an opportunity to study the total sleep episode time separate and distinct from physical activity and sedentary time detected during waking-hours. Trial registration ClinicalTrials.gov NCT01722500 .
dc.identifier.apacitationTudor-Locke, C., Barreira, T. V., Schuna, J. M., Mire, E. F., Chaput, J., Fogelholm, M., ... Katzmarzyk, P. T. (2015). Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE). <i>International Journal of Behavioral Nutrition and Physical Activity</i>, http://hdl.handle.net/11427/13605en_ZA
dc.identifier.chicagocitationTudor-Locke, Catrine, Tiago V Barreira, John M Schuna, Emily F Mire, Jean-Philippe Chaput, Mikael Fogelholm, Gang Hu, et al "Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE)." <i>International Journal of Behavioral Nutrition and Physical Activity</i> (2015) http://hdl.handle.net/11427/13605en_ZA
dc.identifier.citationTudor-Locke, C., Barreira, T. V., Schuna, J. M., Mire, E. F., Chaput, J. P., Fogelholm, M., ... & Katzmarzyk, P. T. (2015). Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE). International Journal of Behavioral Nutrition and Physical Activity, 12(1), 11.
dc.identifier.ris TY - Journal Article AU - Tudor-Locke, Catrine AU - Barreira, Tiago V AU - Schuna, John M AU - Mire, Emily F AU - Chaput, Jean-Philippe AU - Fogelholm, Mikael AU - Hu, Gang AU - Kuriyan, Rebecca AU - Kurpad, Anura AU - Lambert, Estelle V AU - Maher, Carol AU - Maia, José AU - Matsudo, Victor AU - Olds, Tim AU - Onywera, Vincent AU - Sarmiento, Olga L AU - Standage, Martyn AU - Tremblay, Mark S AU - Zhao, Pei AU - Church, Timothy S AU - Katzmarzyk, Peter T AB - Abstract Background We compared 24-hour waist-worn accelerometer wear time characteristics of 9–11 year old children in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) to similarly aged U.S. children providing waking-hours waist-worn accelerometer data in the 2003–2006 National Health and Nutrition Examination Survey (NHANES). Methods Valid cases were defined as having ≥4 days with ≥10 hours of waking wear time in a 24-hour period, including one weekend day. Previously published algorithms for extracting total sleep episode time from 24-hour accelerometer data and for identifying wear time (in both the 24-hour and waking-hours protocols) were applied. The number of valid days obtained and a ratio (percent) of valid cases to the number of participants originally wearing an accelerometer were computed for both ISCOLE and NHANES. Given the two surveys’ discrepant sampling designs, wear time (minutes/day, hours/day) from U.S. ISCOLE was compared to NHANES using a meta-analytic approach. Wear time for the 11 additional countries participating in ISCOLE were graphically compared with NHANES. Results 491 U.S. ISCOLE children (9.92±0.03 years of age [M±SE]) and 586 NHANES children (10.43 ± 0.04 years of age) were deemed valid cases. The ratio of valid cases to the number of participants originally wearing an accelerometer was 76.7% in U.S. ISCOLE and 62.6% in NHANES. Wear time averaged 1357.0 ± 4.2 minutes per 24-hour day in ISCOLE. Waking wear time was 884.4 ± 2.2 minutes/day for U.S. ISCOLE children and 822.6 ± 4.3 minutes/day in NHANES children (difference = 61.8 minutes/day, p < 0.001). Wear time characteristics were consistently higher in all ISCOLE study sites compared to the NHANES protocol. Conclusions A 24-hour waist-worn accelerometry protocol implemented in U.S. children produced 22.6 out of 24 hours of possible wear time, and 61.8 more minutes/day of waking wear time than a similarly implemented and processed waking wear time waist-worn accelerometry protocol. Consistent results were obtained internationally. The 24-hour protocol may produce an important increase in wear time compliance that also provides an opportunity to study the total sleep episode time separate and distinct from physical activity and sedentary time detected during waking-hours. Trial registration ClinicalTrials.gov NCT01722500 . DA - 2015-02-11 DB - OpenUCT DO - 10.1186/s12966-015-0172-x DP - University of Cape Town J1 - International Journal of Behavioral Nutrition and Physical Activity LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) TI - Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) UR - http://hdl.handle.net/11427/13605 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/13605
dc.identifier.urihttp://dx.doi.org/10.1186/s12966-015-0172-x
dc.identifier.vancouvercitationTudor-Locke C, Barreira TV, Schuna JM, Mire EF, Chaput J, Fogelholm M, et al. Improving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE). International Journal of Behavioral Nutrition and Physical Activity. 2015; http://hdl.handle.net/11427/13605.en_ZA
dc.language.rfc3066en
dc.publisher.departmentMRC/UCT RU for Exercise and Sport Medicineen_ZA
dc.publisher.facultyFaculty of Health Sciencesen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License*
dc.rights.holderTudor-Locke et al.; licensee BioMed Central.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0*
dc.sourceInternational Journal of Behavioral Nutrition and Physical Activityen_ZA
dc.source.urihttp://www.ijbnpa.org
dc.subject.otherAccelerometryen_ZA
dc.subject.otherMeasurementen_ZA
dc.subject.otherPhysical activityen_ZA
dc.subject.otherExerciseen_ZA
dc.subject.otherSedentary timeen_ZA
dc.titleImproving wear time compliance with a 24-hour waist-worn accelerometer protocol in the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE)
dc.typeJournal Articleen_ZA
uct.type.filetype
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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