基于等时替代模型的大学生24h活动行为与健康体适能的关系

摘要：

[目的]运用成分等时替代模型探索在校大学生24 h活动行为与健康体适能之间的关系,为改善大学生人群的体质健康水平提供参考.[方法]选取天津某高校223名在校学生为研究对象.使用三维加速度计(ActiGraph GT3X+)记录学生每天24 h活动行为,包括中高强度身体活动(MVPA)、低强度身体活动(LPA)、久坐时间(SB)和睡眠(SLP)时间.使用成分分析方法分析探讨各成分与健康体适能的关系,并以15 min建立等时替代模型预测各活动行为替代后对结局变量产生的影响.[结果]仅MVPA与其他行为之间的替代与反替代均有统计学意义(P<0.05),其中MVPA和SB相互替代时变化幅度最大;LPA替代SB时,BMI指数、握力和坐位体前屈均显著升高,反之仅握力显著下降;LPA替代SLP时,BMI指数显著上升,反之显著下降;SLP替代SB时,BMI指数和腰围显著下降,反之均显著升高,并且升高的幅度更明显.[结论]MVPA是影响大学生群体体质健康发展的主要因素,在保证适度睡眠的同时,将SB转化为MVPA可能更有意义.

[Objective]This study used the component isochronous substitution model to explore the relationship between 24 h activity behaviors and health fitness among college students,providing a reference for improving the physical fitness and health of the college population.[Methods]In this study,223 students enrolled in a university in Tianjin were selected as the study subjects.ActiGraph GT3X+was used to record the students'activity behaviors for 24 h per day,including moderate and vigorous physical activity(MVPA),light physical activity(LPA),sedentary behavior(SB),and sleep(SLP)time.Component analysis was used to analyze and explore the relationship between each component and health fitness,and an isochronous substitution model was built with 15 min to predict the effects on outcome variables after substitution of each activity behavior.[Results]The substitution and counter-substitution between MVPA and other behaviors only were statistically significant(P<0.05),with the largest changes when MVPA and SB substituted for each other;when LPA substituted for SB,BMI index,grip strength and seated forward bending all significantly increased,and vice versa only grip strength significantly decreased;when LPA replaced SLP,BMI index significantly increased,and vice versa significantly decreased;when SLP replaced SB,BMI index and waist circumference significantly decreased,and vice versa both significantly increased,and the magnitude of the increase was more pronounced.[Conclusion]MVPA is a major factor affecting the development of physical fitness in the college population,and it may be more meaningful to convert SB to MVPA while ensuring moderate sleep.

作者：

宋云峰 李凯欣 谭思洁 齐玉刚

Song Yunfeng;Li Kaixin;Tan Sijie;Qi Yugang(School of Sports Health,Tianjin Institute of Sports,Tianjin 301617,China;School of Physical Education and Sports(School Headquarters),Zhengzhou University,Zhengzhou 450001,China;Department of Sports,Tianjin University of Science and Technology,Tianjin 300222,China)

机构地区：

天津体育学院运动健康学院 郑州大学体育学院（校本部） 天津科技大学体育部

出处《betway官方app 学报（自然科学版）》 CAS 北大核心  2024年第3期150-156,I0008,共8页

Journal of Henan Normal University(Natural Science Edition)

基金国家社科基金(BLA220234).

关键词：

24 h活动行为 成分分析 等时替代 健康体适能

24 h activity behavior component analysis isochronous substitution health fitness

分类号：

G804 [文化科学—运动人体科学]  C913.4 [经济管理] 

基于等时替代模型的大学生24h活动行为与健康体适能的关系.pdf