城市老年人静坐积累模式与常见慢性病患病风险的关系

Relationship between Sedentary Accumulation Pattern of Urban Elderly and the Risks of Common Chronic Diseases

目的:对老年人静坐积累模式进行客观量化,探讨老年人静坐积累模式与常见慢性病患病风险的关系。方法:采用多阶段抽样方法抽取南京市60~84岁老年人,采用问卷调查法收集受试者基本信息和常见慢性病患病状况,借助加速度计测量受试者体力活动和静坐行为。分别计算不同持续时长的静坐、静坐中断的次数和时长。最终纳入研究对象共390人。结果:不同年龄、学历、职业、收入老年人的静坐、静坐中断的次数和时长差异显著。持续≥1 min(OR=1.34)、≥5 min(OR=1.14)和≥10 min(OR=1.10)的静坐时长是老年人常见慢性病患病风险的危险因素;≥1 min的静坐中断次数(OR=0.81)以及≥10 min的静坐中断时长(OR=0.81)是老年人常见慢性病患病风险的保护因素,此关系独立于社会人口学因素和加速度计佩戴时间。结论:即使是持续较短时间的静坐仍会增加老年人常见慢性病的患病风险,而短时间内频繁地中断静坐或将中断的时间维持在10 min及以上有利于降低老年人常见慢性病的患病风险。此外,10 min及以上的静坐中断时长对降低常见慢性病患病风险的效益独立于中高强度体力活动。建议频繁地中断静坐行为以打破其连续性,着重关注中断时间的延长而非中断活动的属性,养成"勤动少坐"的生活习惯,有助于降低老年人常见慢性病的患病风险。

Object:Objective quantification of sedentary accumulation patterns in the elderly was carried out to explore the relationship between sedentary accumulation patterns in the elderly and the risk of common chronic diseases.Methods:A multi-stage sampling method was used to extract the elderly aged 60~84 in Nanjing,the basic information of the subjects and the prevalence of common chronic diseases were collected by questionnaire,physical activity and sedentary behavior of the subjects were measured by accelerometer.Calculate the number of sedentary and the average length of sedentary and the number of sedentary breaks and the average time respectively.A total of 390 subjects were included in the study.Results:There were significant differences in the number and duration of sedentary bout and sedentary breaks among older people of different ages,education,occupations,and income.Accumulating at least 1 minute(OR=1.34),5 minutes(OR=1.14),and 10 minutes(OR=1.10)of sedentary bout were risk factors for common chronic diseases in the elderly.The number of sedentary breaks lasting at least 1 minute(OR=0.81)and the duration of sedentary breaks lasting at least 10 minutes(OR=0.81)were protective factors for common chronic diseases.This relationship was independent of socio-demographic factors and accelerometer wearing time.Conclusion:Even short bouts of sedentary behavior can increase the risk of common chronic diseases in older adults,while frequent breaks of sedentary behavior in a short period of time and maintaining the duration of the breaks for at least 10 minutes can help reduce the risk of common chronic disease in older adults.In addition,at least 10 minutes of sedentary breaks are independent of MVPA for the benefits of reducing the risk of common chronic diseases.It is recommended to frequently interrupt the long-lasting behavior to break its continuity,intentionally extend the interruption time rather than interrupted activity attributes,and develop a habit of"frequent activity,less sitting"to help reduce the risk of common chronic diseases in the elderly.