Werneck André O, Romanzini Marcelo, Silva Danilo R, Oyeyemi Adewale L, Bueno Maria R O, Ronque Enio R V
Department of Nutrition, School of Public Health, Universidade de São Paulo (USP), São Paulo; Brazil.
Physical Activity and Health Laboratory, Department of Physical Education, Universidade Estadual de Londrina, Londrina, Brazil.
Health Promot Perspect. 2021 Feb 7;11(1):109-114. doi: 10.34172/hpp.2021.14. eCollection 2021.
Our aim was to analyze the association of self-reported mentally-passive and mentally-active sedentary behaviors with different patterns (bouts and breaks) of device-measured sedentary time in adolescents. This was a cross-sectional study conducted among 375 adolescents (177 boys) aged 1015 years. Total time, bouts and breaks of sedentary time were measured through accelerometers. Self-reported sedentary behavior in different activities was summed and divided into mentally-active (playing electronic games, studying and reading) and mentally-passive (watching TV, watching DVD, and using computer for leisure). Bayesian linear regression models were used for association analyses. Only mentally-passive sedentary behaviors were positively associated with longer bouts [1-4 minutes: mean posterior distribution: -0.431 (95% credible interval: -0.745 to -0.114); =15 minutes: 0.641 (0.122 to 1.222)] and lower number of breaks [-0.138 (-0.228 to -0.044)] of device-measured sedentary time. Self-reported mentally-passive sedentary behaviors are associated with longer bouts and lower breaks of device-measured sedentary time.
我们的目的是分析青少年自我报告的精神被动和精神主动久坐行为与设备测量的久坐时间的不同模式（时段和间断）之间的关联。这是一项对375名10至15岁青少年（177名男孩）进行的横断面研究。久坐时间的总时长、时段和间断通过加速度计进行测量。对不同活动中自我报告的久坐行为进行汇总，并分为精神主动（玩电子游戏、学习和阅读）和精神被动（看电视、看DVD以及将电脑用于休闲）两类。采用贝叶斯线性回归模型进行关联分析。仅精神被动久坐行为与设备测量的久坐时间更长的时段[1 - 4分钟：平均后验分布：-0.431（95%可信区间：-0.745至-0.114）；≥15分钟：0.641（0.122至1.222）]以及更低的间断次数[-0.138（-0.228至-0.044）]呈正相关。自我报告的精神被动久坐行为与设备测量的久坐时间更长的时段和更低的间断次数相关。
