Background: Physical activity (PA) and sedentary behavior (SB) are key determinants of health outcomes in individuals living with type 1 diabetes (T1D). However, the influence of sociodemographic and clinical factors on engagement in these behaviors is not yet well understood.

Objective: This study aimed to analyze the associations of sociodemographic factors, body mass index, and both the duration and age at diagnosis of diabetes with SB, light-intensity physical activity (LPA), and moderate-to-vigorous physical activity (MVPA) in Brazilian adults.

Design and setting: A cross-sectional study was conducted at the Diabetes and Metabolism Service of a public secondary care unit in Rio de Janeiro.

Methods: One hundred adults diagnosed with T1D had their daily awake time spent in SB, LPA, and MVPA measured using triaxial accelerometers. Sociodemographic and clinical factors were assessed using questionnaires. Generalized Linear Models were used to analyze the relationships of these factors with SB, LPA, and MVPA.

Results: Significant associations were found between age, education level, and employment status with SB and LPA, but not with MVPA. On average, each additional year of age was associated with decreased time in SB and increased time in LPA. Higher education levels and unemployment were linked to more SB and less time in LPA.

Conclusions: Age, education level, and employment status emerged as key sociodemographic predictors of SB and LPA in Brazilian adults living with T1D. These findings contribute to a better understanding of the sociodemographic determinants associated with SB and PA in individuals diagnosed with T1D.

背景： 在患有1型糖尿病（T1D）的个体中，体力活动（PA）和久坐行为（SB）是健康结果的关键决定因素。然而，社会人口学和临床因素对这些行为参与度的影响尚未完全理解。

目的： 本研究旨在分析社会人口学因素、体质指数以及糖尿病持续时间和诊断年龄与久坐行为（SB）、轻度体力活动（LPA）和中等至高强度体力活动（MVPA）在巴西成年人中的关联。

设计与地点： 在里约热内卢一家公共二级医疗单位的糖尿病和代谢服务部门进行了一项横断面研究。

方法： 通过对100名被诊断为T1D的成年人使用三轴加速度计测量其清醒时间内的久坐行为（SB）、轻度体力活动（LPA）和中等至高强度体力活动（MVPA），并采用问卷评估社会人口学和临床因素。使用广义线性模型分析这些因素与SB、LPA和MVPA之间的关系。

结果： 年龄、教育水平和就业状态与久坐行为（SB）和轻度体力活动（LPA）存在显著关联，但与中等至高强度体力活动（MVPA）无明显关联。平均而言，每增加一岁年龄就与减少的久坐时间和增加的轻度体力活动时间相关联。较高的教育水平和失业状况与更多的久坐行为和更少的轻度体力活动时间相联系。

结论： 年龄、教育水平和就业状态被认为是巴西患有T1D成年人中久坐行为（SB）和轻度体力活动（LPA）的重要社会人口学预测因素。这些发现有助于更好地理解与糖尿病患者相关的久坐行为和体力活动的社会人口学决定因素。