Postgraduate Program in Movement Sciences.
Postgraduate Program in Physical Therapy, Sao Paulo State University.
J Pediatr Gastroenterol Nutr. 2018 Nov;67(5):666-670. doi: 10.1097/MPG.0000000000002081.
We analyzed the longitudinal relationship between breakfast intake and adiposity among adolescents, and the possible mediation role of physical activity on this phenomenon.
We conducted the longitudinal study composed of 86 adolescents (11-14 years old), absence of any known chronic diseases and no regular medicine use that returned the formal consent and assent both signed. Breakfast intake was reported through face-to-face interviews. Adiposity was assessed using a densitometry scanner. Physical activity was estimated through step counts performed using pedometers. Biological maturation was estimated through the maturity level. Student t test for independent samples was used to compare adolescents who were "nonskipping breakfast" and "skipping breakfast," whereas the relationship between adiposity, physical activity, and skipping breakfast was assessed using Pearson correlation. Structural equation model was created to identify the mediation role of physical activity on the relationship between nonskipping breakfast and adiposity.
After 12 months, adolescents who had consumed breakfast regularly presented decreased trunk fatness (-3.5% [95% confidence interval (CI): -6.9 to -0.2]) and body fatness (-2.3% [95% CI: -3.9 to -0.7]) compared with their counterparts. Physical activity had an inverse relationship with trunk fatness (r = -0.270 [95% CI: -0.457 to -0.060]). Nonskipping breakfast was, however, not significantly related to trunk fatness; however, physical activity seems to reduce trunk fatness in our sample (r = -0.281; 95% CI: -0.479 to -0.083).
Adolescents who ate breakfast regularly presented lower body fatness independent of physical activity, whereas trunk fatness decreased in adolescents who improved physical activity.
我们分析了青少年早餐摄入与肥胖之间的纵向关系，以及身体活动在这一现象中的可能中介作用。
我们进行了一项纵向研究，共纳入 86 名青少年（11-14 岁），他们没有任何已知的慢性疾病，也没有定期服用药物，并签署了正式的同意书和承诺书。早餐摄入量通过面对面访谈报告。使用密度计扫描仪评估肥胖程度。通过计步器测量的步数来估计身体活动量。通过成熟度水平估计生物成熟度。使用独立样本 t 检验比较“不 skipping 早餐”和“skipping 早餐”的青少年，而肥胖、身体活动和 skipping 早餐之间的关系则通过 Pearson 相关性进行评估。创建结构方程模型以确定身体活动在不 skipping 早餐与肥胖之间关系中的中介作用。
12 个月后，与对照组相比，经常吃早餐的青少年的躯干脂肪减少（-3.5%[95%置信区间（CI）：-6.9 至-0.2]）和体脂肪减少（-2.3%[95%CI：-3.9 至-0.7]）。身体活动与躯干脂肪呈负相关（r=-0.270[95%CI：-0.457 至-0.060]）。然而，不 skipping 早餐与躯干脂肪无显著相关性；然而，在我们的样本中，身体活动似乎可以降低躯干脂肪（r=-0.281；95%CI：-0.479 至-0.083）。
经常吃早餐的青少年无论身体活动如何，体脂肪都较低，而身体活动改善的青少年躯干脂肪减少。
