拉萨市中学生体力活动和久坐行为与心肺耐力的关联

刘晨雨; 袁梦; 彭峰; 宋博文; 张晓彤; 李明; 李德生; 孙毅; 尹小俭

doi:10.16835/j.cnki.1000-9817.2025270

拉萨市中学生体力活动和久坐行为与心肺耐力的关联

doi: 10.16835/j.cnki.1000-9817.2025270

刘晨雨¹,
袁梦¹,
彭峰¹,
宋博文¹,
张晓彤¹,
李明²,
李德生³,
孙毅^1, ,,
尹小俭^4, ,

1.
鲁东大学体育学院，山东烟台 264025
2.
西藏民族大学体育学院
3.
济南大学体育学院
4.
华东师范大学体育与健康学院

基金项目:

国家自然科学基金资助项目 82373595

山东省教育科学“十四五”规划2023年度重点课题项目 2023ZD027

详细信息

作者简介:
刘晨雨(1998-)，男，山东省人，在读硕士，主要研究方向为儿童青少年体质健康促进

通讯作者:
孙毅，E-mail：sunyi0084@163.com

尹小俭，E-mail：xjyin1965@163.com

利益冲突声明 所有作者声明无利益冲突。
中图分类号: R179 G806 R331.3⁺¹ R322.3⁺⁵
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- 被引次数: 0
出版历程
- 收稿日期: 2025-03-20
- 修回日期: 2025-07-02
- 网络出版日期: 2025-10-10
- 刊出日期: 2025-09-25

Association of physical activity and sedentary behavior with cardiorespiratory fitness among middle school students in Lhasa

1.
College of Physical Education, Ludong University, Yantai 264025, Shandong Province, China

摘要

摘要: 目的探讨西藏地区中学生体力活动(PA)和久坐行为(SB)与心肺耐力(CRF)的关系，为改善西藏地区青少年心肺耐力和提高健康水平提供实证参考。方法 2020年8—12月，利用分层整群随机抽样方法从西藏拉萨市2所中学抽取1 225名13~18岁初、高中生，使用三轴加速度计评估PA和SB行为，采用20 m往返跑对中学生CRF进行评估。采用等时替代模型分析SB、低强度体力活动(LPA)、中高强度体力活动(MVPA)与CRF的关联，并通过限制性立方样条和两分段线性回归分析MVPA与CRF剂量-效应关系中的饱和阈值效应。结果等时替代分析显示，调整性别、体质量指数、睡眠质量评分等协变量后，在13~15岁初中生中，用30 min MVPA替代SB(B=1.73)和LPA(B=2.38)与CRF均呈正相关；在16~18岁高中生中，用30 min MVPA替代SB(B=0.99)和LPA(B=1.38)与CRF均呈正相关(P值均＜0.05)。限制性立方样条和两分段线性回归分析表明，仅13~18岁中学女生MVPA与CRF存在饱和阈值效应关系(对数似然比检验=0.03)，MVPA为60 min/d时CRF提升效果最佳(B=0.13，P＜0.01)。结论减少SB和LPA的同时增加MVPA可改善西藏中学生CRF；中学女生为更好提升CRF效果，每天MVPA至少应达到60 min。
- 运动活动 /
- 久坐生活方式 /
- 心脏 /
- 肺 /
- 等时替代 /
- 青少年 /
- 少数民族
Abstract: Objective To explore the relationship of physical activity (PA) and sedentary behavior (SB) with cardiorespiratory fitness (CRF) among middle schoold students in Tibet, so as to provide empirical references for improving the cardiorespiratory fitness and health levels of adolescents in Tibet. Methods From August to December 2020, 1 225 junior and senior high school students were selected from 2 middle schools in Lhasa, Tibet Autonomous Region, using the stratified cluster random sampling method. Triaxial accelerometers were used to evaluate PA and SB behaviors, and the 20-meter shuttle run was employed to assess CRF among the middle school students. Isochronous substitution modeling was used to analyze the associations of SB, low-intensity physical activity (LPA), and moderate-vigorous physical activity (MVPA) with CRF, and the saturation threshold effect in the dose-response relationship between MVPA and CRF was analyzed through restricted cubic spline and two-stage linear regression. Results After adjusting for covariates such as gender, body mass index and sleep quality score, isotemporal substitution analysis showed that among junior high school students aged 13-15, replacing 30 minutes of SB (B=1.73) or LPA (B=2.38) with MVPA were positively associated with CRF (both P < 0.05). Among senior high school students aged 16-18, replacing SB (B=0.99) or LPA (B=1.38) with MVPA were also positively associated with CRF (both P < 0.05). Restricted cubic spline and two-piecewise linear regression analyses indicated that only middle school girls aged 13-18 exhibited a saturation threshold effect between MVPA and CRF (logarithmic likelihood ratio test=0.03), with the optimal CRF improvement observed at 60 minutes of MVPA per day (B=0.13, P < 0.01). Conclusions Reducing SB and LPA while increasing MVPA can improve CRF in Tibetan middle school students. To maximize CRF improvement, middle school girls should engage in at least 60 minutes of MVPA daily.
- Motor activity /
- Sedentary lifestyle /
- Heart /
- Lung /
- Isotemporal substitution /
- Adolescent /
- Minority groups
注释:

1) 利益冲突声明 所有作者声明无利益冲突。

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图 1 拉萨市13~18岁中学女生MVPA与CRF之间的剂量—反应关系

Figure 1. Dose-response relationship between MVPA and CRF in female middle school students aged 13-18 years in Lhasa

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表 1 拉萨市各年龄组不同性别中学生基本指标比较(x±s)

Table 1. Comparison of basic indicators among middle school students of different genders and age groups in Lhasa(x±s)

年龄/岁	性别	人数	统计值	BMI/(kg·m^-2)	睡眠质量评分	VO_2max/[mL·(kg·min)^-1]	SB/(min·d^-1)	LPA/(min·d^-1)	MVPA/(min·d^-1)	配戴加速度计时间/(min·d^-1)
13~15	男	314		18.73±3.31	3.44±2.17	40.44±4.40	737.60±57.95	85.79±22.88	53.85±16.97	877.23±56.17
	女	348		18.83±2.98	3.84±2.10	35.90±3.18	769.09±65.26	74.25±18.71	41.85±12.35	885.19±62.23
			t值	-0.39	-2.27	14.91	-6.53	7.05	10.30	-1.73
			P值	0.43	0.08	< 0.01	< 0.01	< 0.01	< 0.01	0.09
16~18	男	264		20.49±3.27	3.63±2.33	40.34±5.67	781.87±68.09	70.09±19.36	58.72±16.04	910.68±61.96
	女	299		20.66±3.10	4.18±2.40	33.67±3.84	809.11±61.63	69.54±17.07	47.62±12.22	926.27±61.74
			t值	-0.61	-2.11	16.03	-4.98	0.35	9.15	-2.99
			P值	0.54	0.04	< 0.01	< 0.01	0.72	< 0.01	< 0.01

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