心肺适能在肥胖青少年体力活动与心血管代谢健康间的作用  

Effects of cardiorespiratory fitness on physical activity and cardiometabolic health among obese adolescents

作　　者：梁曼娜 朱琳[3,4,5] 郑李 谢维俊 LIANG Manna;ZHU Lin;ZHENG Li;XIE Weijun(Graduate School,Guangzhou University of Sport,Guangzhou(510500),Guangdong Province,China;不详)

机构地区：[1]广州体育学院研究生院,广东510500 [2]新合实验学校 [3]广州体育学院 [4]广东省运动与健康重点实验室 [5]运动与青少年体质健康研究型重点实验室

出　　处：《中国学校卫生》2024年第12期1780-1784,共5页Chinese Journal of School Health

基　　金：国家社会科学基金重点项目(23ATY007);广东省哲学社会科学“十四五”规划2021项目(GD21CTY01);广东省普通高校重点领域专项(2022ZDZX2038)。

摘　　要：目的探讨心肺适能(CRF)在肥胖青少年体力活动与心血管代谢健康间的作用,以期为肥胖青少年的健康促进提供科学依据。方法分别于2021年与2022年的7—8月,招募封闭式减肥训练营中的140名10~17岁肥胖青少年为研究对象,采用ActiGraph GT3X+三轴运动加速度计测量肥胖青少年久坐行为(SB)、低强度体力活动(LPA)、总身体活动(TPA)及中高强度体力活动(MVPA)时间,使用20 m折返跑测定CRF水平。测量肥胖青少年包括腰围(WC)、矢状腹径(SAD)、收缩压(SBP)、舒张压(DBP)、平均血压(ABP)、空腹胰岛素(FINs)、空腹血糖(FPG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)在内的心血管代谢健康指标构建心血管代谢风险Z评分(CMR-Z),采用SPSS Process插件进行中介效应分析。结果肥胖青少年的心血管健康指标中,WC、SAD、SBP、DBP、ABP、FINs、FPG、TC、HDL-C、CMR-Z分别为(93.21±11.51)cm、(21.77±2.71)cm、(111.24±11.86)mmHg、(66.08±9.03)mmHg、(88.66±8.97)mmHg、(8.98±6.42)μU/mL、(4.42±0.62)mmol/L、(4.43±0.97)mmol/L、(1.29±0.28)mmol/L、-0.43(-1.83,1.78)分;每日体力活动行为指标中,SB、LPA、MVPA、TPA时长分别为(345.16±78.47,267.35±62.65,64.77±39.52,677.30±57.63)min,SB、LPA、MVPA占比分别为50.96%,39.47%和9.56%;CRF指标VO_(2max)为(37.95±4.96)mL/(kg·min)。中介分析结果显示,肥胖青少年CRF在LPA和腰高比(WHtR)间起完全中介作用,占比为44.2%;在LPA和ABP间起遮掩效应,占比为31.5%;在MVPA和SAD间起遮掩效应,占比为43.2%;在MVPA和CMR-Z间起遮掩效应,占比为96.0%。结论CRF可能是体力活动与肥胖青少年心血管代谢健康间的重要影响因素,提高CRF水平有利于促进肥胖青少年心血管代谢健康。Objective To explore the effect of cardiorespiratory fitness(CRF)on cardiometabolic health and physical activity among obese adolescents,in order to provide a scientific basis for health promotion of obese adolescents.Methods From July to August 2021 and 2022,140 obese adolescents aged 10-17 were recruited in a residential weight-loss camp.Sedentary behavior(SB),low intensity physical activity(LPA),total physical activity(TPA)and moderate-to-vigorous physical activity(MVPA)were measured by ActiGraph GT3X+triaxial motion accelerometer,and CRF levels were measured by 20-meter shuttle run test.Cardiometabolic risk Z score(CMR-Z)was constructed by measuring the cardiometabolic health indicators of obese adolescents,including waist circumference(WC),sagittal abdominal diameter(SAD),systolic blood pressure(SBP),diastolic blood pressure(DBP),average blood pressure(ABP),fasting insulin(FINs),fasting plasma glucose(FPG),total cholesterol(TC),and high-density lipoprotein cholesterol(HDL-C).The mediating effect analysis was conducted by using the SPSS Process plug-in compiled.Results Cardiovascular health indicators WC,SAD,SBP,DBP,ABP,FINs,FPG,TC,HDL-C and CMR-Z were(93.21±11.51)cm,(21.77±2.71)cm,(111.24±11.86)mmHg,(66.08±9.03)mmHg and(88.66±8.97)mmHg,(8.98±6.42)μU/mL,(4.42±0.62)mmol/L,(4.43±0.97)mmol/L,(1.29±0.28)mmol/L,-0.43(-1.83,1.78)min,respectively.In the daily activity behavior indicators,the duration of SB,LPA,MVPA and TPA were(345.16±78.47,267.35±62.65,64.77±39.52,677.30±57.63)min,respectively.SB,LPA and MVPA accounted for 50.96%,39.47% and 9.56%,respectively.The indicator VO_(2max)of CRF was(37.95±4.96)mL/(kg·min).Mediation analysis showed that CRF played a fully mediating role between LPA and waist-to-height ratio(WHtR),accounting for 44.2%.It exhibited a suppressing effect between LPA and ABP accounting for 31.5%,with a suppressing effect between MVPA and SAD accounting for 43.2%and a suppressing effect between MVPA and CMR-Z accounting for 96.0%.Conclusions CRF may be an important factor in the

关 键 词：心肺适能 肥胖症 运动活动 心血管系统 青少年 

分 类 号：R179[医药卫生—妇幼卫生保健] R714.252[医药卫生—公共卫生与预防医学] G806[文化科学—运动人体科学]