背景：身体活动与久坐行为的测量是了解身体活动与久坐行为流行趋势的核心，也是开展预防和干预方案的前提和基础。利用电子问卷的自我监控、目标设定与表现反馈等功能使其与身体活动与久坐行为流行性筛查相结合能使行为测量更加快速、准确。而目前适合我国成年人的身体活动与久坐行为电子问卷仍未开发。目的：编制适合我国成年人的身体活动与久坐行为电子问卷，为我国成年人身体活动与久坐行为流行性调查提供工具，为指导自主健康行为指南及策略制定提供参考。方法：1）在 PubMed/Web of Science/Ebscho(SportDiscus)/中国知网等数据库上搜索有关身体活动/久坐行为问卷的文献，经提取、新增、质量评估筛选出有价值的、高质量的维度和条目形成最终问卷。2）通过方便抽样，选取10名北京市健康成年女性，连续佩戴7天三轴加速度计，并在每日睡前回忆填写“健康Pub”APP中身体活动与久坐行为日版问卷，佩戴结束后的第一天睡前填写周版问卷，并在7天后再次填写周版问卷，对收集的数据进行信、效度检验。结果：1）完成中国成年人身体活动与久坐行为电子问卷的编制，其中身体活动问卷由4个维度，42个条目组成，久坐行为问卷由4个维度，38个条目组成。2）电子问卷信、效度良好，身体活动问卷重测信度r=0.79，日版校标效度r=0.68，周版r=0.72；久坐行为问卷信度r=0.88，日版校标效度r=0.45，周版r=0.61。均已达到问卷编制的基本要求。结论：1）首创中国版APP电子问卷，弥补该领域的不足；2）问卷内容上提供行为的情境特征；3）电子问卷信效度良好，可以用于我国成年人长期身体活动和久坐的行为监测与健康管理。

Background: Measurement of physical activity and sedentary behavior is central to understanding the prevalence of physical activity and sedentary behavior and is a prerequisite and basis for developing prevention and intervention programs. The combination of the electronic questionnaire with the physical activity and sedentary behavior epidemic screening can make the behavior measurement more rapid and accurate by using the self-monitoring, goal setting and performance feedback functions. At present, the electronic questionnaire of physical activity and sedentary behavior suitable for Chinese adults has not been developed. Objective: To develop an electronic questionnaire on physical activity and sedentary behavior for Chinese adults, and to provide a tool for the survey on the prevalence of physical activity and sedentary behavior among Chinese adults, and to provide reference for the development of self-directed health behavior guidelines and strategies. Methods: 1) Literature related to physical activity/sedentary behavior questionnaire was searched from databases such as PubMed/Web of Science/Ebscho(Sportdiscus)/ CNKI. Valuable and high-quality dimensions and items were screened out after extraction, addition and quality assessment to form the final questionnaire. 2) Ten healthy adult women in Beijing were selected to wear a triaxial accelerometer for 7 consecutive days. They were asked to fill out the daily questionnaire on physical activity and sedentary behavior in the "Healthy Pub" APP before going to bed every day. After wearing the triaxial accelerometer, they filled out the weekly questionnaire again 7 days later to test the reliability and validity of the collected data. Results: 1) The electronic questionnaire on physical activity and sedentary behavior of Chinese adults was completed, in which the physical activity questionnaire consisted of 42 items from 4 dimensions and the sedentary behavior questionnaire consisted of 38 items from 4 dimensions. 2) The reliability and validity of the electronic questionnaire were good. The retest reliability of the physical activity questionnaire r=0.79, the calibration validity of the daily version r=0.68, and the weekly version r=0.72. The reliability of the sedentary behavior questionnaire r=0.88, the calibration validity of the daily version r=0.45, and the weekly version r=0.61. All of them have met the basic requirements of questionnaire preparation. Conclusion: 1) The first Chinese version of APP electronic questionnaire, making up for the shortcomings in this field; 2) Provide situational characteristics of behaviors in the questionnaire content; 3) The electronic questionnaire has good reliability and validity and can be used for monitoring long-term physical activity and sedentary behavior and health management of adults in China.