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Associations between meeting 24-hour movement guidelines and academic achievement in Australian primary school-aged children

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Journal of Sport and Health Science 2022年第4期11卷 521-529页

作者： Amanda Watson Dorothea Dumuid Carol Maher tim olds Alliance for Research in Exercise Nutrition and Activity(ARENA)Allied Health and Human PerformanceUniversity of South AustraliaAdelaideSA5001Australia

Background:Few studies have investigated associations between academic achievement and meeting recommendations from the 24-hour(24-h)movement *** specific guidelines associated with the most benefit academic achievement are *** both self-report and objective movement data,this study examined associations between academic achievement and meeting individual recommendations and combinations of recommendations from the 24-h movement guidelines(sleep,physical activity,and screen time).Methods:Data from CheckPoint,a cross-sectional study nested between Waves 6 and 7 of the Longitudinal Study of Australian Children,were *** behaviors were measured using 24-h wrist-worn accelerometry(GENEActiv(Activinsights,Kimbolton,UK))and were selfreported by children using the Multimedia Activity Recall for Children and *** achievement was measured using a nationally administered standardized test in literacy and *** of covariance,with t tests with sequential Bonferroni adjustments,was used to compare academic achievement with all possible combinations of meeting recommendations,adjusting for demographic *** models were considered:guideline compliance assessed by self-report(n=1270,mean age=11.99 years,52%males)and by accelerometry(for moderate-to-vigorous intensity physical activity(MVPA)and sleep))and self-report(screen time)in combination(n=927,mean age=11.97 years,52%males).Results:Literacy achievement significantly differed based on self-report(F_((7,1258))=3.08,p=0.003)and accelerometer derived(F_((7,915))=2.40,p=0.02)guideline *** achievement significantly differed based on self-report(F_((7,1258))=2.92,p=0.005)but not accelerometer derived guideline compliance(F_((7,915))=0.80,p=0.58).When assessed by self-report,children who met all guidelines(t_((334))=-4.05,p=0.0001)or met the screen time and sleep guidelines in combination(t_((125))=-5.02,p<0.001)had superior literacy ***

关键词： Academic achievement Physical activity Sedentary behavior Sleep

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KT Boundary Chromites Determined to be Terrestrial:Cr Isotopic Evidence for Excavation and Ejection of Mafic/Ultramafic Rocks by the KT Boundary Impact

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Acta Geologica Sinica(English Edition) 2017年第S1期91卷 26-27页

作者： Peter olds Mathew E.SANBORN tim TEAGUE YIN Qingzhu College of Alameda University of California at Davis University of California at Berkeley

Evidence for a mantle and/or basaltic component in KT boundary distal ejecta is apparently inconsistent with ejection from Chicxulub Crater since it is located on;5km thick continental crust（De Paolo et al.,1983;Montanari et al.,1983;Hildebrand and Boynton,1988,1990）.Evidence for mafic/ultramafic target rocks was reinforced by discovery of chromites,some with shock planar deformation features（PDF）,in impact layer samples from sites in southern Colorado and eastern Wyoming（Bohor et al.,1990）.However,until now it was unclear whether the chromites originated with an impactor or with terrestrial target *** this end,high-precision 54Cr/52Cr isotope ratios were measured on KT boundary chromites along with known terrestrial *** find a terrestrial 54Cr/52Cr ratio in KT boundary chromites from impact layer samples collected at the above sites over the last several years（Fig.1）.Ejected terrestrial chromites suggest the impact sampled terrestrial mafic and/or ultramafic target rocks not known to exist in the Chicxulub target area.

关键词： KT Boundary Chromites Determined to be Terrestrial Cr Isotopic Evidence for Excavation and Ejection of Mafic/Ultramafic Rocks by the KT Boundary Impact

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Injuries in jumpers-are there any patterns?

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World Journal of Orthopedics 2016年第3期7卷 182-187页

作者： Brett Rocos tim J Chesser Department of Trauma and Orthopaedics Southmead Hospital

Suicide as a cause of death, affects every health system, and is a particular problem in heavily urbanised states and low and middle income countries(which account for 75% of suicide deaths). The World Health Organisation records that 800000 commit suicide each year, representing 1.4% of annual global deaths, and that suicide was the second leading cause of death in 15-29year-olds across the world in 2012. In the United Kingdom, jumping from height accounts for 3%-5% of the 140000 suicide attempts annually is similar incidence to the rest of Europe. The Medline and EMBASE were interrogated for studies examining suicide caused by jumping from height. Manual screening of titles and abstracts was used to identify relevant works before data was extracted and systematically reviewed to identify the characteristics of a patient who jumps from height to commit suicide, delineate their patterns of injury and explore techniques that could be used to limit its occurrence. Emergency departments receiving patients who jump from a height need to have an understanding of the potential pathology that is likely to be encountered in order to deliver multidisciplinary, efficient and timely care in order that the impact of this devastating physical, psychological and social problem could modified to the benefit of the patients involved.

关键词： Polytrauma Suicide Fracture

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