Sales Diego, Ferrari Gerson, da Silva Junior João Pedro, Bergamo Raiany Rosa, de Oliveira Moda Pedro Paulo, Santos Amauri Dos, Santos Mauricio Dos, Matsudo Victor
Centro de Estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS), São Caetano do Sul, SP, Brasil.
Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Providencia, Santiago, Chile.
Sci Rep. 2025 Jan 11;15(1):1684. doi: 10.1038/s41598-025-85601-2.
This study aimed to evaluate the association between substituting 10, 30, and 60 min/day of physical activity and sitting time with obesity indicators among workers. It is a cross-sectional study involving 394 adults (76.6% women) from São Paulo, Brazil. Physical activity and sitting time (min/day) were measured using the short version of the International Physical Activity Questionnaire (IPAQ) to determine physical activity levels. Obesity indicators included body mass index (BMI; kg/m²), waist circumference (cm), and body fat (kg). Isotemporal substitution models were analyzed using multivariate linear regression, adjusted for sociodemographic variables. Participants reported median values of 150.0 min/day (IQR: 60.0-360.0) for walking and 445.7 min/day (IQR: 317.1-565.7) for sitting time. The median values for BMI, waist circumference, and body fat were 27.1 kg/m², 91.0 cm, and 23.5 kg, respectively. Substituting 10 min/day of sitting time for 10 min/day of walking was associated with waist circumference (β: -0.216: 95% CI: -0.041; -0.007). In addition, substituting 60 min/day of sitting time for moderate physical activity (β -0.206; 95% CI: -0.123; -0.008) was negatively associated with body fat. The equivalent substitution of different periods of sitting time for more active behaviors was favorably associated with obesity indicators. These findings suggest that lifestyle interventions based on replacing sitting time with physical activity can reduce the obesity epidemic in adults.
本研究旨在评估用每天10分钟、30分钟和60分钟的体力活动替代久坐时间与劳动者肥胖指标之间的关联。这是一项横断面研究，涉及来自巴西圣保罗的394名成年人（76.6%为女性）。使用国际体力活动问卷简版（IPAQ）测量体力活动和久坐时间（分钟/天），以确定体力活动水平。肥胖指标包括体重指数（BMI；千克/平方米）、腰围（厘米）和体脂（千克）。使用多变量线性回归分析等时替代模型，并对社会人口学变量进行了调整。参与者报告的步行中位数为每天150.0分钟（四分位间距：60.0 - 360.0），久坐时间中位数为每天445.7分钟（四分位间距：317.1 - 565.7）。BMI、腰围和体脂的中位数分别为27.1千克/平方米、91.0厘米和23.5千克。用每天10分钟的步行替代10分钟的久坐时间与腰围相关（β： - 0.216；95%置信区间： - 0.041； - 0.007）。此外，用每天60分钟的久坐时间替代中等强度体力活动（β - 0.206；95%置信区间： - 0.123； - 0.008）与体脂呈负相关。将不同时间段的久坐时间等量替代为更活跃的行为与肥胖指标呈有利关联。这些发现表明，基于用体力活动替代久坐时间的生活方式干预可以减少成年人中的肥胖流行。
