This research is designed to investigate the relationship between the 24-h movement guidelines(24-HMG)and self-reported academic achievement(AA)using nationally representative data derived from the 2019 U.S.National Y...This research is designed to investigate the relationship between the 24-h movement guidelines(24-HMG)and self-reported academic achievement(AA)using nationally representative data derived from the 2019 U.S.National Youth Risk Behaviour Survey.A multiple-stage cluster sampling procedure has been adopted to ensure a representative sample(N=9127 adolescents;mean age=15.7 years old;male%=49.8%).Logistic regression has been adopted to obtain the odds ratio(OR)regarding the associations between adherence to 24-HMG and AA while controlling for ethnicity,body mass index,sex and age.The prevalence of meeting the 24-h movement guidelines in isolation and combination varied greatly(physical activity=23.3%,screen time=32.5%,sleep=22.3%,and 24-HMG=2.8%),while the percentage of highest-class AA was 42.5%.Compared with the situation when none of 24-HMG is met,the achievement of any of the combined guidelines(except for meeting the physical activity guidelines)was significantly associated with higher odds of achieving first-class AA.Meeting the sleep guideline had 1.42 times increased likelihood to achieve highest-class AA as compared with not meeting the sleep guideline.Meeting screen time guidelines and physical activity guidelines,respectively,were 1.32 and 1.13 times more likely to report first-class AA;but meeting the guidelines of physical activity was not significantly related to AA.Meeting the 24-HMG had the highest odds of achieving first-class AA(OR=2.01,95%CI:1.47-2.73).In both sexes,adolescents who met 24-HMG self-reported better AA(boys OR=2.05,95%CI:1.34-3.15;girls OR=2.26,95%CI:1.36-3.76).Significant relationships were observed in adolescents from 9-10th grade,but not higher grades.Our research findings suggest that optimal movement behaviours can be seen as an important element to better academic achievement among U.S.adolescents.Future studies can adopt our discoveries to promote adolescents’academic achievement through implementing optimal 24-h movement behaviour patterns.展开更多
This study investigated how children's 24-hour(24-h)movement behaviours were affected by SARS-CoV-2(COVID-19)in the Kingdom of Saudi Arabia.Previous research examined 24-h movement behaviours in Saudi Arabia seven...This study investigated how children's 24-hour(24-h)movement behaviours were affected by SARS-CoV-2(COVID-19)in the Kingdom of Saudi Arabia.Previous research examined 24-h movement behaviours in Saudi Arabia seven months after the World Health Organization(WHO)declared COVID-19 a global pandemic.This repeat cross-sectional study examined changes in 24-h movement behaviours 12 months after the WHO declaration.The Time 2 survey repeated five months(1 March–15 May 2021)after Time 1 survey(1 October–11 November 2020).The survey was distributed to parents of children aged 6–12 years across Saudi Arabia via an online survey.Children were classified as meeting 24-h movement guidelines if they reported uninterrupted sleep for 9–11 h per night,2 h of recreational sedentary screen time(RST)per day and-60 min of moderate-to vigorous-intensity physical activity(MVPA)per day.A total of 1045 parents from all regions of Saudi Arabia responded(42.4%).Only 1.8%of children met all components of the guidelines,compared to 3.4%in Time 1.In the present study,girls spent more days per week in MVPA-60 min duration than boys(3.0 vs 2.6;p=0.025),while boys had spent more days per week engaged in activities that strengthened muscle and bone than girls(3.0 vs 2.8;p=0.019).Healthy levels of physical activity(PA),sedentary behaviour(SB)and sleep further declined in Saudi children five months after the Time 1 survey.These challenges require urgent intervention to ensure children's movement behaviours improve as Saudi Arabia moves out of the COVID-19 pandemic.展开更多
世界卫生组织(World Health Organization,WHO)于2020年11月发布了《2020年WHO运动和久坐行为指南》。此次指南相较于2010年WHO运动指南纳入了更广泛的医学证据,并对特殊人群进行了针对性的推荐。其主要内容包括对儿童及青少年、成年人...世界卫生组织(World Health Organization,WHO)于2020年11月发布了《2020年WHO运动和久坐行为指南》。此次指南相较于2010年WHO运动指南纳入了更广泛的医学证据,并对特殊人群进行了针对性的推荐。其主要内容包括对儿童及青少年、成年人、老年人、孕产妇、慢性病群体及残障群体的运动和久坐建议。本文对该指南进行了详细解读。展开更多
目的了解学龄前儿童日常身体活动现状,进一步研究身体活动与执行功能之间的相关性。方法2018年5-7月在北京地区抽取3家幼儿园,采用方便抽样方法抽取中班儿童201人,连续3d佩戴加速度计ActiGraph GT9X,采用早期儿童执行功能测量工具包(Ear...目的了解学龄前儿童日常身体活动现状,进一步研究身体活动与执行功能之间的相关性。方法2018年5-7月在北京地区抽取3家幼儿园,采用方便抽样方法抽取中班儿童201人,连续3d佩戴加速度计ActiGraph GT9X,采用早期儿童执行功能测量工具包(Early Years Toolbox,EYT)进行工作记忆、抑制控制和转换三项执行功能测试,采用自编问卷调查受试儿童的屏幕时间。结果学龄前儿童每日中高强度身体活动、总身体活动时间分别为(95.65±29.02)min、(204.58±46.91)min,男女之间每日轻度、中度、剧烈、中高强度以及总身体活动时间存在差异(U=2593.00,2136.00,2440.00,t=4.09,3.68,P<0.05)。每日屏幕时间为(72.84±51.79)min,男女之间差异无统计学意义(P>0.05)。工作记忆、抑制控制、转换三项执行功能测试得分依次是2.40±0.80、0.76±0.16、14.08±3.49,男女之间差异无统计学意义(P>0.05)。身体活动与EYT测试得分相关性分析发现在4岁组儿童中针对转换的测试得分与每日高强度身体活动时间存在显著相关性(r=0.199,P=0.040)。进一步以屏幕时间、每日总身体活动时间,每日中高强度身体活动时间达标与否进行分组,未发现各组间EYT测试得分差异有统计学意义(P>0.05)。结论学龄前儿童存在身体活动不足的状况,身体活动和执行功能之间存在相关性,且这种相关性与身体活动的强度有关。展开更多
Purpose Children require 9-11 h sleep to ensure adequate growth and development by optimizing the efficiency of a number of biological systems,including the cardiovascular system.The study aim was to determine whether...Purpose Children require 9-11 h sleep to ensure adequate growth and development by optimizing the efficiency of a number of biological systems,including the cardiovascular system.The study aim was to determine whether short sleep duration(<9 h)is associated with elevated aortic arterial stiffness in children aged 9-11 years,independent of other lifestyle behav-iors,including physical activity,sedentary behaviour and dietary patterns.Methods This cross-sectional study included 421 children(51%female)aged 9-11 years.Aortic arterial stiffness was measured using carotid-femoral pulse wave velocity(cfPWV),sleep duration,time spent sedentary,and moderate-vigorous physical activity were measured using wrist actigraphy,and dietary patterns using a food frequency questionnaire.Associa-tions between short sleep duration and cfPWV were examined using mixed effects regression.Results There was a positive[unadjusted]association between short sleep duration and cfPWV(β=0.245,95%CI 0.093-0.396).This association persisted following adjustment for demographic factors and was strengthened following adjustment for lifestyle behaviors(β=0.331,95%CI 0.109-0.553).Conclusions Short sleepers(<9 h)had a clinically meaningful elevated aortic arterial stiffness in comparison to those sleeping the recommended daily 9-11 h.Sleep duration may be important for cardiovascular health independent of other lifestyle behaviors.展开更多
基金supported by the National Social Science Foundation(217BTY032)Key Project from the Social Science Foundation of Hunan Province(16ZDB015).
文摘This research is designed to investigate the relationship between the 24-h movement guidelines(24-HMG)and self-reported academic achievement(AA)using nationally representative data derived from the 2019 U.S.National Youth Risk Behaviour Survey.A multiple-stage cluster sampling procedure has been adopted to ensure a representative sample(N=9127 adolescents;mean age=15.7 years old;male%=49.8%).Logistic regression has been adopted to obtain the odds ratio(OR)regarding the associations between adherence to 24-HMG and AA while controlling for ethnicity,body mass index,sex and age.The prevalence of meeting the 24-h movement guidelines in isolation and combination varied greatly(physical activity=23.3%,screen time=32.5%,sleep=22.3%,and 24-HMG=2.8%),while the percentage of highest-class AA was 42.5%.Compared with the situation when none of 24-HMG is met,the achievement of any of the combined guidelines(except for meeting the physical activity guidelines)was significantly associated with higher odds of achieving first-class AA.Meeting the sleep guideline had 1.42 times increased likelihood to achieve highest-class AA as compared with not meeting the sleep guideline.Meeting screen time guidelines and physical activity guidelines,respectively,were 1.32 and 1.13 times more likely to report first-class AA;but meeting the guidelines of physical activity was not significantly related to AA.Meeting the 24-HMG had the highest odds of achieving first-class AA(OR=2.01,95%CI:1.47-2.73).In both sexes,adolescents who met 24-HMG self-reported better AA(boys OR=2.05,95%CI:1.34-3.15;girls OR=2.26,95%CI:1.36-3.76).Significant relationships were observed in adolescents from 9-10th grade,but not higher grades.Our research findings suggest that optimal movement behaviours can be seen as an important element to better academic achievement among U.S.adolescents.Future studies can adopt our discoveries to promote adolescents’academic achievement through implementing optimal 24-h movement behaviour patterns.
基金The study was conducted in accordance with the Declaration of Helsinki.Approval was obtained from the Ministry of Education in Saudi Arabia(2639/2021)the Human Research Ethics Committee at the University of Wollongong,Australia(HE288/2021).
文摘This study investigated how children's 24-hour(24-h)movement behaviours were affected by SARS-CoV-2(COVID-19)in the Kingdom of Saudi Arabia.Previous research examined 24-h movement behaviours in Saudi Arabia seven months after the World Health Organization(WHO)declared COVID-19 a global pandemic.This repeat cross-sectional study examined changes in 24-h movement behaviours 12 months after the WHO declaration.The Time 2 survey repeated five months(1 March–15 May 2021)after Time 1 survey(1 October–11 November 2020).The survey was distributed to parents of children aged 6–12 years across Saudi Arabia via an online survey.Children were classified as meeting 24-h movement guidelines if they reported uninterrupted sleep for 9–11 h per night,2 h of recreational sedentary screen time(RST)per day and-60 min of moderate-to vigorous-intensity physical activity(MVPA)per day.A total of 1045 parents from all regions of Saudi Arabia responded(42.4%).Only 1.8%of children met all components of the guidelines,compared to 3.4%in Time 1.In the present study,girls spent more days per week in MVPA-60 min duration than boys(3.0 vs 2.6;p=0.025),while boys had spent more days per week engaged in activities that strengthened muscle and bone than girls(3.0 vs 2.8;p=0.019).Healthy levels of physical activity(PA),sedentary behaviour(SB)and sleep further declined in Saudi children five months after the Time 1 survey.These challenges require urgent intervention to ensure children's movement behaviours improve as Saudi Arabia moves out of the COVID-19 pandemic.
文摘世界卫生组织(World Health Organization,WHO)于2020年11月发布了《2020年WHO运动和久坐行为指南》。此次指南相较于2010年WHO运动指南纳入了更广泛的医学证据,并对特殊人群进行了针对性的推荐。其主要内容包括对儿童及青少年、成年人、老年人、孕产妇、慢性病群体及残障群体的运动和久坐建议。本文对该指南进行了详细解读。
文摘目的了解学龄前儿童日常身体活动现状,进一步研究身体活动与执行功能之间的相关性。方法2018年5-7月在北京地区抽取3家幼儿园,采用方便抽样方法抽取中班儿童201人,连续3d佩戴加速度计ActiGraph GT9X,采用早期儿童执行功能测量工具包(Early Years Toolbox,EYT)进行工作记忆、抑制控制和转换三项执行功能测试,采用自编问卷调查受试儿童的屏幕时间。结果学龄前儿童每日中高强度身体活动、总身体活动时间分别为(95.65±29.02)min、(204.58±46.91)min,男女之间每日轻度、中度、剧烈、中高强度以及总身体活动时间存在差异(U=2593.00,2136.00,2440.00,t=4.09,3.68,P<0.05)。每日屏幕时间为(72.84±51.79)min,男女之间差异无统计学意义(P>0.05)。工作记忆、抑制控制、转换三项执行功能测试得分依次是2.40±0.80、0.76±0.16、14.08±3.49,男女之间差异无统计学意义(P>0.05)。身体活动与EYT测试得分相关性分析发现在4岁组儿童中针对转换的测试得分与每日高强度身体活动时间存在显著相关性(r=0.199,P=0.040)。进一步以屏幕时间、每日总身体活动时间,每日中高强度身体活动时间达标与否进行分组,未发现各组间EYT测试得分差异有统计学意义(P>0.05)。结论学龄前儿童存在身体活动不足的状况,身体活动和执行功能之间存在相关性,且这种相关性与身体活动的强度有关。
文摘Purpose Children require 9-11 h sleep to ensure adequate growth and development by optimizing the efficiency of a number of biological systems,including the cardiovascular system.The study aim was to determine whether short sleep duration(<9 h)is associated with elevated aortic arterial stiffness in children aged 9-11 years,independent of other lifestyle behav-iors,including physical activity,sedentary behaviour and dietary patterns.Methods This cross-sectional study included 421 children(51%female)aged 9-11 years.Aortic arterial stiffness was measured using carotid-femoral pulse wave velocity(cfPWV),sleep duration,time spent sedentary,and moderate-vigorous physical activity were measured using wrist actigraphy,and dietary patterns using a food frequency questionnaire.Associa-tions between short sleep duration and cfPWV were examined using mixed effects regression.Results There was a positive[unadjusted]association between short sleep duration and cfPWV(β=0.245,95%CI 0.093-0.396).This association persisted following adjustment for demographic factors and was strengthened following adjustment for lifestyle behaviors(β=0.331,95%CI 0.109-0.553).Conclusions Short sleepers(<9 h)had a clinically meaningful elevated aortic arterial stiffness in comparison to those sleeping the recommended daily 9-11 h.Sleep duration may be important for cardiovascular health independent of other lifestyle behaviors.
