Abstract: Objective To analyze the current status of tummy time among infants in Beijing during early infancy and its influencing factors, in order to provide basis for parental guidance on childcare practices and promote children's growth and development. Methods From June 1st to August 31st, 2021, two streets/township community health service centers from each of two districts in Beijing were selected using cluster sampling, from which 447 resident infants were randomly sampled. Caregivers were surveyed via questionnaire covering demographic information and details of infants' tummy time. Results Among 447 infants, 58.4% started their tummy time within 1 month of birth. Only 15.0% of infants under 4 months spent ≥ 30min on tummy time. Univariate analysis showed that infant tummy time increased with infant age(χ²=0.283,P<0.05). Infants in the 30- to 34-year-old maternal age group had a higher proportion of ≥30-minute tummy time compared to those with mothers younger than 30 or older than 35. Multivariate analysis revealed that being 0-month-old (OR=12.369, 95%CI: 4.056 - 37.723) or 1-month-old (OR=4.751, 95%CI: 1.657 - 13.080), and maternal education levels of college or below (OR=2.670, 95%CI: 1.143 - 6.242) were risk factors for tummy time during infancy (P<0.05), while fathers being under 30 years old acted as protective role in tummy time during infancy (OR=0.135, 95%CI: 0.034 - 0.533, P<0.05). Conclusions The proportion of infants spending ≥30 minutes daily in tummy time during early infancy is not high. Tummy time is influenced by factors including infant age, mother's educational level, and father's age, necessitating enhanced education and guidance for parents regarding the importance of tummy time in early infancy.

Key words: tummy time, physical activity, infants

摘要： 目的 分析北京市婴儿早期俯卧时间现状及其影响因素,为指导家长养育照护、促进儿童生长发育提供依据。方法 采用整群抽样方法,于2021年6月1日—8月31日,选取北京市两个区各两个街道/乡镇社区卫生服务中心,随机抽取常住婴儿447例。对其养护人进行问卷调查,内容包括一般情况及婴儿俯卧时间情况。结果 58.4%的婴儿在生后1个月内开始俯卧。4月龄以下婴儿俯卧时间≥30min者的比例为15.0%。单因素分析显示,婴儿俯卧时间随月龄增长而增加(χ²=0.283,P<0.05)。与30岁以下组和35岁及以上组相比,母亲年龄在30～34岁组婴儿俯卧时间≥30min的比例较高(P<0.01)。多因素分析显示,0月龄(OR=12.369,95%CI:4.056～37.723)和1月龄(OR=4.751,95%CI:1.657～13.080)以及母亲文化程度为大学/大专及以下(OR=2.670,95%CI:1.143～6.242)是婴儿长时间俯卧的危险因素(P＜0.05),父亲年龄30岁以下是婴儿长时间俯卧的保护因素((OR=0.135,95%CI:0.034～0.533,P＜0.05)。结论 婴儿早期每天俯卧时间≥30min者比例不高。俯卧时间受婴儿月龄、母亲文化程度和父亲年龄等因素影响,需要向家长加强婴儿早期俯卧时间的宣教和指导工作。

关键词: 俯卧时间, 身体活动, 婴儿