大学生24 h体力活动、久坐行为、睡眠对心肺耐力的积累效应  

Accumulated Effects of 24 Hours Physical Activity,Sedentary Behavior,and Sleep on Cardiorespiratory Fitness in College Students

作　　者：宋云峰 徐驰 李凯欣 谭思洁[3] 齐玉刚[4] SONG Yunfeng;XU Chi;LI Kaixin;TAN Sijie;QI Yugang(Key Laboratory of Scientific Selection and Functional Assessment of Athletes of General Administration of Sport of China,Hubei Institute of Sports Science,Wuhan 430205,China;School of Physical Education(Main Campus),Zhengzhou University,Zhengzhou 450001,China;Key Laboratory of Integration of Sports and Health,College of Sports and Health,Tianjin University of Sport,Tianjin 301617,China;Department of Physical Education,Tianjin University of Science and Technology,Tianjin 300222,China)

机构地区：[1]湖北省体育科学研究所国家体育总局运动员科学选材及机能评定重点实验室,武汉430205 [2]郑州大学体育学院(校本部),郑州450001 [3]天津体育学院运动健康学院体卫融合重点实验室,天津301617 [4]天津科技大学体育部,天津300222

出　　处：《中国医学科学院学报》2025年第2期155-163,共9页Acta Academiae Medicinae Sinicae

基　　金：国家社会科学基金(BLA220234)。

摘　　要：目的探索大学生体力活动、久坐行为、睡眠对心肺耐力(CRF)的积累效应,为提升大学生CRF水平提供有效措施。方法2023年5至6月在天津科技大学招募223名18~24岁大学生进行24 h活动行为调查及CRF测试。采用成分分析方法探讨身体活动、久坐行为、睡眠与CRF之间的关系,并建立等时替代模型预测各活动行为替代后对CRF产生的影响。结果中高强度体力活动(MVPA)时间占比与大学生CRF呈显著正相关(β=6.40,P=0.002),久坐行为时间占比与大学生CRF呈显著负相关(β=-3.02,P=0.004),低强度体力活动(LPA)和睡眠时间占比与CRF无相关性(β=-1.06,P=0.504)。15 min等时替代结果显示,MVPA替代其他活动行为后,大学生CRF均显著提高[久坐行为:1.72 mL/(kg·min),95%CI=0.94~2.51;LPA:1.82 mL/(kg·min),95%CI=0.95~2.68;睡眠:1.64 mL/(kg·min),95%CI=0.84~2.45]。在从-30 min到30 min的剂量-效应关系中,从其他行为重新分配时间到MVPA对CRF的不利影响大于将MVPA重新分配到其他行为的益处;在所有替代中,MVPA替代LPA对提高CRF的效应最佳。此外,5 min的增量被认为是MVPA替代其他活动的最佳转折点。结论强调参与MVPA对改善大学生CRF的重要性。等时替代模型为这些行为的时间分配提出了明确的目标,有助于未来的干预措施和政策制定。Objective To explore the accumulated effects of physical activity,sedentary behavior,and sleep on cardiorespiratory fitness(CRF)among college students and provide effective measures for enhancing their CRF.Methods From May to June in 2023,223 college students aged 18 to 24 years old were recruited from Tianjin University of Science and Technology for a 24 hours activity behavior survey and CRF testing.Compositional analysis was employed to investigate the relationships of physical activity,sedentary behavior,and sleep with CRF.Isotemporal substitution models were established to predict the effects of substituting various activity behaviors on CRF.Results The proportion of time spent on moderate-to-vigorous physical activity(MVPA)was positively correlated with CRF of college students(β=6.40,P=0.002),while the proportion of time spent on sedentary behavior was negatively correlated with CRF(β=-3.02,P=0.004).Light physical activity(LPA)and sleep were not correlated with CRF(β=-1.06,P=0.504).Isotemporal substitution results for 15-min increments showed that replacing other activity behaviors with MVPA significantly increased the CRF of college students[SB:1.72 mL/(kg·min),95%CI=0.94-2.51;LPA:1.82 mL/(kg·min),95%CI=0.95-2.68;sleep:1.64 mL/(kg·min),95%CI=0.84-2.45].In the dose-response relationship from-30 min to 30 min,reallocating time from other behaviors to MVPA had greater adverse effect on CRF than reallocating time from MVPA to other behaviors.Among all the substitutions,replacing LPA with MVPA had the most beneficial effect on improving CRF.Additionally,a 5-min increment was considered the optimal tipping point for MVPA replacing other activities.Conclusions This study underscores the importance of participating in MVPA for improving the CRF of college students.The isotemporal substitution model provides clear goals for the allocation of time for these behaviors,aiding in future intervention measure development and policy-making.

关 键 词：24 h活动行为 成分分析 等时替代 心肺耐力 

分 类 号：G804[文化科学—运动人体科学]