主办单位:成都体育学院
ISSN 1001-9154 CN 51-1097/G8

成都体育学院学报 ›› 2025, Vol. 51 ›› Issue (2): 171-178.doi: 10.15942/j.jcsu.2025.02.18

• 学校体育学与运动人体科学 • 上一篇    

基于等时替代模型的身体活动、久坐行为与城市社区老年女性衰弱的关系研究

吴双1,2, 李婷3, 张宪亮1, 陈斯4, 贺强1   

  1. 1. 山东大学 体育学院, 山东 济南250061;
    2. 金华开放大学, 浙江 金华321000;
    3. 上海体育大学 体育教育学院, 上海 200438;
    4. 山东大学 护理与康复学院, 山东 济南 250012
  • 收稿日期:2024-09-22 发布日期:2025-04-28
  • 通讯作者: 贺强,博士,副教授,硕士研究生导师,研究方向:运动与健康;E-mail: hq@sdu.edu.cn。 E-mail:wushuang1998@mail.sdu.edu.cn;hq@sdu.edu.cn
  • 作者简介:吴双,硕士研究生,研究方向:运动与健康;E-mail: wushuang1998@mail.sdu.edu.cn。
  • 基金资助:
    山东省社会科学规划研究项目“社区体卫融合健康服务的社会支持体系研究”(22CTYJ06)。

Association of Time Spent on Physical Activity and Sedentary Behavior with Frailty in Community-dwelling Older Women: Isotemporal Substitution Model

WU Shuang1,2, LI Ting3, ZHANG Xianliang1, CHEN Si4, HE Qiang1   

  1. 1. School of Physical Education, Shandong University, Jinan Shandong 250061;
    2. Jinhua Open University, Jinhua Zhejiang 321000;
    3. School of Physical Education, Shanghai University of Sport, Shanghai 200438;
    4. School of Nursing and Rehabilitation, Shandong University, Jinan Shandong 250012
  • Received:2024-09-22 Published:2025-04-28

摘要: 目的:老年女性行为改变(如身体活动代替久坐行为)与衰弱的关系尚不清楚,本研究采用等时替代模型模拟轻度身体活动 (light physical activity,LPA) 和中高强度身体活动 (moderate-vigorous physical activity, MVPA)替代等量久坐行为 (sedentary behavior, SEB),探究行为改变与老年女性衰弱的关联。方法:通过方便抽样招募烟台市1 370名60~70岁的老年女性,最终1 099名受试者纳入本研究。采用三轴加速度计客观测量受试者每日MVPA、LPA和SEB。根据Fried 衰弱表型进行衰弱评估。分别采用3种二元逻辑回归模型和3种有序多分类逻辑回归模型(单因素模型、分配模型和等时替代模型)来评估MVPA、LPA和SEB与老年女性衰弱的关系。结果:在调整混杂因素之后,单因素模型发现MVPA和LPA均与更低的衰弱前期及衰弱风险显著相关,而SEB与更高的衰弱前期及衰弱风险显著相关。将MVPA、LPA和SEB都放入分配模型中,发现LPA与衰弱前期显著相关,但与衰弱无关;MVPA与衰弱前期和衰弱均显著相关;SEB与衰弱前期和衰弱无关。等时替代模型的结果发现:(1)增加30 min LPA替代等量的SEB,老年女性发生衰弱前期和衰弱的风险分别降低8%和7% ;(2)增加30 min MVPA替代等量的SEB,老年女性发生衰弱前期和衰弱的风险分别降低41%和47%;(3)增加30 min MVPA代替等量的LPA,老年女性发生衰弱前期和衰弱的风险分别降低35%和42%。结论:MVPA和LPA代替等量SEB均可不同程度改善老年女性的衰弱状况。在时间相同的情况下,MVPA替代SEB改善老年女性衰弱的效果优于LPA。建议老年女性尽量避免久坐行为,每天增加一定量的身体活动代替久坐,其中增加每天的中高强度身体活动代替久坐行为获益更多。

关键词: 久坐行为, 身体活动, 衰弱, 等时替代, 老年女性

Abstract: Objective: The relationship between older women frailty and behavioral changes (such as physical activity replacing sedentary behavior) is not clear. This study used isotemporal substitution model to simulate the effect of light physical activity (LPA) and moderate-vigorous physical activity (MVPA) replacing sedentary behavior (SEB) on older women frailty. Methods: A convenient sampling method was used to recruit 1370 participants aged 60-70 years from multiple communities in Yantai, and 1099 participants were finally included. MVPA, LPA and SEB were objectively measured with accelerometer. The frailty status was evaluated according to the Fried phenotype. Three binary logistic regression models and three ordered multi-classification logistic regression models (single model, partition model and isotemporal substitution model) were used to evaluate the relationship between MVPA, LPA, SEB and frailty. Results: After adjusting all covariate factors, the single model found that MVPA and LPA were significantly associated with lower risk of pre-frailty and frailty, while SEB was significantly associated with higher risk of pre-frailty and frailty. Putting MVPA, LPA and SEB into the partition model, the results showed that LPA was significantly associated with pre-frailty, but not related to frailty, MVPA was significantly associated with pre-frailty and frailty, and SEB was not associated with pre-frailty and frailty. The results of isotemporal substitution model showed that: (1) 30 minutes of LPA replacing the same amount of SEB significantly reduced the risk of pre-frailty and frailty by 8% and 7% respectively; (2) 30 minutes of MVPA repalcing the same amount of SEB significantly reduced the risk of pre-frailty and frailty by 41% and 47% respectively; (3) 30 minutes of MVPA replacing the same amount of LPA significantly reduced the risk of pre-frailty and frailty by 35% and 42% respectively.Conclusion: MVPA and LPA can change the frailty status of the older women living in the community. At the same time, MVPA is better than LPA in changing the frailty status. Therefore, it is recommended that older women should avoid SEB as much as possible and increase a certain amount of physical activity every day to replace SEB, and they will get more health benefits when MVPA is increased on a daily basis to replace SEB.

Key words: sedentary behavior, physical activity, frailty, isotemporal substitution, older women

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