Background:Physical activity(PA)in the early years is associated with a range of positive health outcomes.Fundamental motor skill(FMS)competence is associated with PA and is theorized to be driven by PA in the early y...Background:Physical activity(PA)in the early years is associated with a range of positive health outcomes.Fundamental motor skill(FMS)competence is associated with PA and is theorized to be driven by PA in the early years and vice versa in mid to late childhood.However,to date,no studies have meta-analyzed the association between PA and FMS in the early years.Methods:Six electronic databases were searched for articles published up to April 2019.Cross-sectional and longitudinal studies were included if they targeted children(ages 3-6 year)as the population of the study and assessed the association between objectively measured PA and FMS.Total FMS,total physical activity(TPA),and moderate-to-vigorous physical activity(MVPA)data were meta-analyzed using a random effects model.Results:We identified 24,815 titles and abstracts.In total,19 studies met the inclusion criteria,including 14 cross-sectional and 4 longitudinal studies,as well as 1 study with cross-sectional and longitudinal analysis.There was a significant but small positive association between FMS and MVPA(r=0.20,95%confidence interval(CI):0.13-0.26)and TPA(r=0.20,95%CI:0.12-0.28).Findings from longitudinal studies revealed that PA drives FMS in early childhood.Mediation was explored in 1 study,which found that perceived motor competence did not mediate the association between FMS and PA.Conclusion:Using a meta-analysis,this study is the first to show a positive association between FMS,MVPA,and TPA in the early years of childhood,suggesting that the association begins at an early age.Limited evidence from longitudinal studies supports the theory that PA drives FMS in the early years of childhood.More evidence is needed from large studies to track PA and FMS until mid to late childhood and to explore the mediators of this association.展开更多
Background The rise in suicides among children aged 10–14 years demands urgent attention globally.This study aims to assess the global burden of suicide-related deaths in this age group from 1990 to 2019,considering ...Background The rise in suicides among children aged 10–14 years demands urgent attention globally.This study aims to assess the global burden of suicide-related deaths in this age group from 1990 to 2019,considering factors such as sex,geography,and sociodemographics,to inform prevention strategies and interventions.Methods The data from Global Burden of Disease 2019,encompassing 204 countries and territories,were analyzed to investigate deaths and years of life lost(YLLs)due to suicide among children aged 10–14 years.Statistical analyses,including mortality rates,YLLs,and the sociodemographic index(SDI),were conducted using standardized tools.Results In 2019,a total of 8327[95%uncertainty interval(UI)=7073–9685]children aged 10–14 years died globally due to suicide,with a mortality rate of 1.30(95%UI=1.10–1.51)per 100,000.The rates varied across countries/territories ranging between 0.05(95%UI=0.02–0.10)in South Africa and 7.49(95%UI=5.13–10.57)in Greenland.The contribution of suicide-related deaths to all-cause mortality ranged from 0.07%(95%UI=0.04%–0.15%)in South Africa to 33.02%(95%UI=24.36%–41.53%)in Greenland.Worldwide,there were approximately 636,196(95%UI=540,383–740,009)YLLs due to suicide,with a rate of 99.07(95%UI=84.15–115.23)per 100,000.The association between SDI and suicide-related deaths was evident,with higher contributions observed in countries with higher SDI.Conclusions This study reveals a concerning global burden of suicide-related deaths among children aged 10–14 years.Despite progress in reducing mortality rates,suicide remains a significant issue.While overall rates have declined,the percentage of deaths caused by suicide in this age group is increasing.展开更多
Reanalysis data from NCEP/NCAR are used to systematically study preceding signals of monthly precipitation anomalies in the early raining season of Guangdong province, from the viewpoints of 500-hPa geopotential heigh...Reanalysis data from NCEP/NCAR are used to systematically study preceding signals of monthly precipitation anomalies in the early raining season of Guangdong province, from the viewpoints of 500-hPa geopotential height field, outgoing longwave radiation (OLR) field, sea surface temperature (SST) and fourteen indexes of general circulation depicting atmosphere activity at high, middle and low latitutes. Being multiple tools of information, a number of conceptual models are formulated that are useful for prediction of the magnitude of monthly precipitation (drought, flood and normal conditionss).展开更多
文摘Background:Physical activity(PA)in the early years is associated with a range of positive health outcomes.Fundamental motor skill(FMS)competence is associated with PA and is theorized to be driven by PA in the early years and vice versa in mid to late childhood.However,to date,no studies have meta-analyzed the association between PA and FMS in the early years.Methods:Six electronic databases were searched for articles published up to April 2019.Cross-sectional and longitudinal studies were included if they targeted children(ages 3-6 year)as the population of the study and assessed the association between objectively measured PA and FMS.Total FMS,total physical activity(TPA),and moderate-to-vigorous physical activity(MVPA)data were meta-analyzed using a random effects model.Results:We identified 24,815 titles and abstracts.In total,19 studies met the inclusion criteria,including 14 cross-sectional and 4 longitudinal studies,as well as 1 study with cross-sectional and longitudinal analysis.There was a significant but small positive association between FMS and MVPA(r=0.20,95%confidence interval(CI):0.13-0.26)and TPA(r=0.20,95%CI:0.12-0.28).Findings from longitudinal studies revealed that PA drives FMS in early childhood.Mediation was explored in 1 study,which found that perceived motor competence did not mediate the association between FMS and PA.Conclusion:Using a meta-analysis,this study is the first to show a positive association between FMS,MVPA,and TPA in the early years of childhood,suggesting that the association begins at an early age.Limited evidence from longitudinal studies supports the theory that PA drives FMS in the early years of childhood.More evidence is needed from large studies to track PA and FMS until mid to late childhood and to explore the mediators of this association.
基金This research received no specific grants from any funding agency in the public,commercial,or not-for-profit sectors.
文摘Background The rise in suicides among children aged 10–14 years demands urgent attention globally.This study aims to assess the global burden of suicide-related deaths in this age group from 1990 to 2019,considering factors such as sex,geography,and sociodemographics,to inform prevention strategies and interventions.Methods The data from Global Burden of Disease 2019,encompassing 204 countries and territories,were analyzed to investigate deaths and years of life lost(YLLs)due to suicide among children aged 10–14 years.Statistical analyses,including mortality rates,YLLs,and the sociodemographic index(SDI),were conducted using standardized tools.Results In 2019,a total of 8327[95%uncertainty interval(UI)=7073–9685]children aged 10–14 years died globally due to suicide,with a mortality rate of 1.30(95%UI=1.10–1.51)per 100,000.The rates varied across countries/territories ranging between 0.05(95%UI=0.02–0.10)in South Africa and 7.49(95%UI=5.13–10.57)in Greenland.The contribution of suicide-related deaths to all-cause mortality ranged from 0.07%(95%UI=0.04%–0.15%)in South Africa to 33.02%(95%UI=24.36%–41.53%)in Greenland.Worldwide,there were approximately 636,196(95%UI=540,383–740,009)YLLs due to suicide,with a rate of 99.07(95%UI=84.15–115.23)per 100,000.The association between SDI and suicide-related deaths was evident,with higher contributions observed in countries with higher SDI.Conclusions This study reveals a concerning global burden of suicide-related deaths among children aged 10–14 years.Despite progress in reducing mortality rates,suicide remains a significant issue.While overall rates have declined,the percentage of deaths caused by suicide in this age group is increasing.
基金Short-term Climate Prediction Study for Guangdong Province a key project of Guangdong Science and Technology Committee in the national 9th five-year economic development plan Research on Long-term Tendency Prediction System for Floods/Drought and Typh
文摘Reanalysis data from NCEP/NCAR are used to systematically study preceding signals of monthly precipitation anomalies in the early raining season of Guangdong province, from the viewpoints of 500-hPa geopotential height field, outgoing longwave radiation (OLR) field, sea surface temperature (SST) and fourteen indexes of general circulation depicting atmosphere activity at high, middle and low latitutes. Being multiple tools of information, a number of conceptual models are formulated that are useful for prediction of the magnitude of monthly precipitation (drought, flood and normal conditionss).
