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Due to the limited reliability of traditional self-completed questionnaire, the accuracy of measurement of physical behaviors (physical activity, sedentary behavior and sleep) is not high. With the development of technology, wearable devices (e.g. accelerometer) can be used for more accurate measurement of physical behaviors and have great application potential in large-scale research. However, the data of objective measurement of physical behaviors from large-scale cohort research in Asian populations is still limited. Between August 2020 and December 2021, the 3rd resurvey of China Kadoorie Biobank (CKB) project used Axivity AX3 wrist triaxial accelerometer to collect the data of participants' daily activity and sleep status. A total of 20 370 participants from 10 study areas were included in the study, in whom 65.2% were women, and the age was (65.4±9.1) years. The participants' physical activity level varied greatly in different study areas. The objective measurement of participants' physical behaviors in CKB project has provided valuable resources for the description of 24-hour patterns of physical behaviors and evaluation of the health effect of physical activity, sedentary behavior and sleep as well as their association with diseases in the elderly in China.

Original publication

DOI

10.3760/cma.j.cn112338-20230724-00036

Type

Journal article

Journal

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi

Publication Date

01/2024

Volume

45

Pages

35 - 40

Addresses

Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191,China.

Keywords

Humans, Exercise, Reproducibility of Results, Sleep, Aged, Middle Aged, Female, Male, Accelerometry, Surveys and Questionnaires