Department of Nutrition and Dietetics, Harokopio University, Athens, Greece.
Department of Kinesiology and Health, Rutgers University, New Brunswick, New Jersey, USA.
Cent Eur J Public Health. 2020 Dec;28(4):260-266. doi: 10.21101/cejph.a6097.
The aim of the study was to determine the associations between recreational screen time and dietary habits and lifestyle factors in a representative sample of schoolchildren.
Observational, cross-sectional study data were derived from 177,091 children aged 8 to 17 years participating in a health survey. Recreational screen time, physical activity (PA), and sleeping hours were assessed through self-completed questionnaires. Dietary habits were evaluated via the Mediterranean Diet Quality Index for children and adolescents (KIDMED) test. Anthropometric and physical fitness (PF) estimations were obtained by trained investigators.
Binary logistic regression comparisons between screen time levels (e.g. < 2 vs. ≥ 2 - < 3 h/d, < 2 vs. ≥ 3 - < 4 h/d and < 2 vs. ≥ 4 h/d) and dietary habits showed that the longer the screen time the increased the odds of unhealthy dietary habits such as skipping breakfast, consuming fast food frequently, and eating sweets frequently, and the decreased the odds of healthy dietary habits such as consuming a second fruit every day, consuming fresh or cooked vegetables or/and fish regularly, in both genders, after adjusting for several covariates. Furthermore, the longer the screen time the increased the odds of total and central obesity, insufficient sleep (< 8-9 h/d), and inadequate PA, and the decreased the odds of healthy PF.
The longer the screen time the unhealthier dietary habits and lifestyle profile among schoolchildren, after adjusting for several covariates.
本研究旨在确定在代表性的学龄儿童样本中，休闲屏幕时间与饮食习惯和生活方式因素之间的关联。
观察性、横断面研究数据来自于 177091 名 8 至 17 岁参与健康调查的儿童。通过自我完成的问卷评估休闲屏幕时间、体力活动（PA）和睡眠时间。通过儿童和青少年地中海饮食质量指数（KIDMED）测试评估饮食习惯。通过经过培训的调查员获得人体测量和身体成分（PF）估计值。
在屏幕时间水平（例如<2 与≥2-<3 h/d、<2 与≥3-<4 h/d 和<2 与≥4 h/d）和饮食习惯之间进行二元逻辑回归比较后发现，屏幕时间越长，出现不健康饮食习惯的几率越高，例如不吃早餐、经常吃快餐和经常吃甜食，而健康饮食习惯的几率越低，例如每天吃第二个水果、经常食用新鲜或煮熟的蔬菜和/或鱼类，这种关联在两性中均存在，且在调整了多个协变量后仍然存在。此外，屏幕时间越长，总肥胖和中心型肥胖、睡眠不足（<8-9 h/d）、体力活动不足的几率越高，而健康 PF 的几率越低。
在调整了多个协变量后，屏幕时间越长，学龄儿童的饮食习惯和生活方式越不健康。
