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Conference Paper: Prolonged bouts of sedentary time are associated with 2-hr plasma glucose, independent of total sedentary time

TitleProlonged bouts of sedentary time are associated with 2-hr plasma glucose, independent of total sedentary time
Authors
KeywordsMedical sciences
Sports medicine
Issue Date2007
PublisherElsevier Australia. The Journal's web site is located at http://www.elsevier.com/wps/find/journaldescription.cws_home/707423/description?navopenmenu=-2
Citation
The 6th National Physical Activity Conference (be active ‘07), Adelaide, Australia, 13-16 October 2007. In Journal of Science and Medicine in Sport, 2007, v. 10, suppl. 1, p. 60, abstract no. 160 How to Cite?
AbstractTotal sedentary time is associated with increased 2-hr plasma glucose. However, total sedentary time does not indicate how the sedentary time was accumulated. Animal studies suggest that longer, uninterrupted bouts of sedentary time have more detrimental metabolic effects compared with shorter accumulated bouts. We examined if longer average bouts of sedentary time were associated with higher 2-hr plasma glucose, independent of total sedentary time. In total, 67 men and 106 women (mean age 53.3, range 30 to 87) without known diabetes were recruited from the 2004-2005 AusDiab study. Sedentary time was measured by accelerometers worn during waking hours for seven consecutive days, and summarised as total sedentary time (counts/minute < 100, hours), total number of sedentary bouts, and mean sedentary bout time (minutes). A sedentary bout was defined as the sum of minutes of <100 accelerometer counts. An oral glucose tolerance test determined 2-hr plasma glucose. Mean sedentary bout time was 6.0 minutes (range 3.0 to 11.3). After adjusting for age, sex, total sedentary time, moderate-to-vigorous intensity physical activity, and time accelerometer worn, mean sedentary bout time was significantly associated with higher 2-hr plasma glucose (b=0.28, 95%CI 0.07 to 0.49, p=0.010). Additionally, total number of sedentary bouts (reflecting more breaks in sedentary time) was significantly associated with lower 2-hr plasma glucose (b=-0.04, -0.06 to -0.01 per 10 bouts, p=0.003). These findings provide preliminary evidence on the potential importance for human health of avoiding prolonged periods of being sedentary, and provide a key step towards formulating sedentary behaviour recommendations.
DescriptionThe Conference will be held concurrently with the 2007 Recreation and Sport Development Conference, the Australian Conference of Science and Medicine in Sport, and the 5th National Sports Injury Prevention Conference.
Persistent Identifierhttp://hdl.handle.net/10722/128755
ISSN
2015 Impact Factor: 3.756
2015 SCImago Journal Rankings: 1.484

 

DC FieldValueLanguage
dc.contributor.authorHealy, G-
dc.contributor.authorDunstan, D-
dc.contributor.authorSalmon, J-
dc.contributor.authorCerin, E-
dc.contributor.authorOwen, N-
dc.date.accessioned2010-11-09T02:06:53Z-
dc.date.available2010-11-09T02:06:53Z-
dc.date.issued2007-
dc.identifier.citationThe 6th National Physical Activity Conference (be active ‘07), Adelaide, Australia, 13-16 October 2007. In Journal of Science and Medicine in Sport, 2007, v. 10, suppl. 1, p. 60, abstract no. 160-
dc.identifier.issn1440-2440-
dc.identifier.urihttp://hdl.handle.net/10722/128755-
dc.descriptionThe Conference will be held concurrently with the 2007 Recreation and Sport Development Conference, the Australian Conference of Science and Medicine in Sport, and the 5th National Sports Injury Prevention Conference.-
dc.description.abstractTotal sedentary time is associated with increased 2-hr plasma glucose. However, total sedentary time does not indicate how the sedentary time was accumulated. Animal studies suggest that longer, uninterrupted bouts of sedentary time have more detrimental metabolic effects compared with shorter accumulated bouts. We examined if longer average bouts of sedentary time were associated with higher 2-hr plasma glucose, independent of total sedentary time. In total, 67 men and 106 women (mean age 53.3, range 30 to 87) without known diabetes were recruited from the 2004-2005 AusDiab study. Sedentary time was measured by accelerometers worn during waking hours for seven consecutive days, and summarised as total sedentary time (counts/minute < 100, hours), total number of sedentary bouts, and mean sedentary bout time (minutes). A sedentary bout was defined as the sum of minutes of <100 accelerometer counts. An oral glucose tolerance test determined 2-hr plasma glucose. Mean sedentary bout time was 6.0 minutes (range 3.0 to 11.3). After adjusting for age, sex, total sedentary time, moderate-to-vigorous intensity physical activity, and time accelerometer worn, mean sedentary bout time was significantly associated with higher 2-hr plasma glucose (b=0.28, 95%CI 0.07 to 0.49, p=0.010). Additionally, total number of sedentary bouts (reflecting more breaks in sedentary time) was significantly associated with lower 2-hr plasma glucose (b=-0.04, -0.06 to -0.01 per 10 bouts, p=0.003). These findings provide preliminary evidence on the potential importance for human health of avoiding prolonged periods of being sedentary, and provide a key step towards formulating sedentary behaviour recommendations.-
dc.languageeng-
dc.publisherElsevier Australia. The Journal's web site is located at http://www.elsevier.com/wps/find/journaldescription.cws_home/707423/description?navopenmenu=-2-
dc.relation.ispartofJournal of Science and Medicine in Sport-
dc.subjectMedical sciences-
dc.subjectSports medicine-
dc.titleProlonged bouts of sedentary time are associated with 2-hr plasma glucose, independent of total sedentary timeen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1440-2440&volume=10, suppl. 1, article no. 160&spage=s60&epage=&date=2007&atitle=Prolonged+bouts+of+sedentary+time+are+associated+with+2-hr+plasma+glucose,+independent+of+total+sedentary+time-
dc.identifier.emailCerin, E: ecerin@hku.hk-
dc.identifier.hkuros164984-
dc.identifier.volume10-
dc.identifier.issuesuppl. 1-
dc.identifier.spage60-
dc.identifier.epage60-
dc.description.otherThe 6th National Physical Activity Conference (be active ‘07), Adelaide, Australia, 13-16 October 2007. In Journal of Science and Medicine in Sport, 2007, v. 10, suppl. 1, p. 60, abstract no. 160-

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