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Tim Olds
University of South Australia
382Publications
53H-index
11kCitations
Publications 381
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#1Julia K. Zakrzewski-Fruer (University of Bedfordshire)H-Index: 3
#2Fiona Gillison (University of Bath)H-Index: 20
Last.Martyn Standage (University of Bath)H-Index: 38
view all 19 authors...
Existing research has documented inconsistent findings for the associations among breakfast frequency, physical activity (PA), and sedentary time in children. The primary aim of this study was to examine the associations among breakfast frequency and objectively-measured PA and sedentary time in a sample of children from 12 countries representing a wide range of human development, economic development and inequality. The secondary aim was to examine interactions of these associations between stu...
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#1Jillian Ryan (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 5
#2Luke Lopian (UniSA: University of South Australia)
Last.Carol Maher (UniSA: University of South Australia)H-Index: 32
view all 9 authors...
Background Although gender is an important determinant of health behaviour with males less likely to perform health-protective behaviours, samples in health behaviour research are heavily biased towards females. This study investigated the use of online social network, Facebook, to reach and recruit inactive males to a team-based, social, and gamified physical activity randomised controlled trial.
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#1Lucinda Bell (Flinders University)H-Index: 7
#2Shahid Ullah (University of Adelaide)H-Index: 2
Last.Lynne Cobiac (Flinders University)H-Index: 26
view all 10 authors...
Childhood obesity is a serious public health concern worldwide. Community-based obesity prevention interventions offer promise due to their focus on the broader social, cultural and environmental contexts rather than individual behaviour change and their potential for sustainability and scalability. This paper aims to determine the effectiveness of a South Australian community-based, multi-setting, multi-strategy intervention, OPAL (Obesity Prevention and Lifestyle), in increasing healthy weight...
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#1Amanda Watson (UniSA: University of South Australia)H-Index: 4
#2Carol Maher (UniSA: University of South Australia)H-Index: 32
Last.Tim Olds (UniSA: University of South Australia)H-Index: 53
view all 8 authors...
Emerging evidence suggests that children become fatter and less fit over the summer holidays but get leaner and fitter during the in-school period. This could be due to differences in diet and time use between these distinct periods. Few studies have tracked diet and time use across the summer holidays. This study will measure rates of change in fatness and fitness of children, initially in Grade 4 (age 9 years) across three successive years and relate these changes to changes in diet and time u...
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#1Jessica A. Kerr (University of Melbourne)H-Index: 5
#2Pauline W. Jansen (EUR: Erasmus University Rotterdam)H-Index: 24
Last.Melissa Wake (University of Auckland)H-Index: 59
view all 11 authors...
Snacks contribute to overconsumption of energy-dense foods and thence obesity. Previous studies in this area are limited by self-reported data and small samples. In a large population-based cohort of parent–child dyads, we investigated how modification of pre-packaged snack food, i.e. (a) item quantity and variety, and (b) dishware (boxed container) size affected intake. Design: Randomized trial nested within the cross-sectional Child Health CheckPoint of the Longitudinal Study of Australian Chi...
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#1Qian Xiao (UI: University of Iowa)H-Index: 17
#2Jean-Philippe Chaput (Children's Hospital of Eastern Ontario)H-Index: 52
Last.Peter T. Katzmarzyk (Pennington Biomedical Research Center)H-Index: 85
view all 14 authors...
#1Sarah Blunden (Central Queensland University)H-Index: 22
#2Christopher A. Magee (UOW: University of Wollongong)H-Index: 26
Last.Tim Olds (UniSA: University of South Australia)H-Index: 53
view all 6 authors...
Abstract Objectives This study aimed to investigate sleep patterns in adolescent males over a 12-week period (a 10-week school term and pre and post term holidays). Design Intensive longitudinal design, with sleep data collected daily via actigraphy for 81 consecutive days. Setting Five Secondary Schools in Adelaide, South Australia. Participants Convenience sample of 47 adolescent males aged 14 to 17 years. Measurements Daily sleep duration, bedtimes, rise times, and sleep efficiency were colle...
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#1Sarah EdneyH-Index: 4
#2Tim OldsH-Index: 53
Last.Carol MaherH-Index: 32
view all 7 authors...
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#1Louise FoleyH-Index: 15
#2Dorothea DumuidH-Index: 10
Last.Tim OldsH-Index: 53
view all 6 authors...
LF was funded by the Centre for Diet and Activity Research (CEDAR), a UKCRC Public Health Research Centre of Excellence. Funding from the British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council, the National Institute for Health Research, and the Wellcome Trust, under the auspices of the UK Clinical Research Collaboration, is gratefully acknowledged (087636/Z/08/Z, ES/G007462/1, MR/K023187/1). DO (MC_UU_12015/6) and KW (MC_UU_12015/3) were sup...
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