Assistant Professor of Family Medicine, University of California Riverside School of Medicine, California, USA.
Obesity (Silver Spring). 2014 Jan;22(1):249-53. doi: 10.1002/oby.20557. Epub 2013 Oct 15.
Study the effects of multiple exercise and nutritional educational interventions on adverse body mass index (BMI) gain of BMI sub-groups of predominately Hispanic six through eight year-old children at high risk for obesity.
BMI and demographic data were recorded at baseline and six months later in 749 first and second grade public school children at four elementary schools. Two schools (intervention group) received 150 min of extra physical education classes, weekly cooking classes, a structured nutritional curriculum, and parental counseling. BMI changes were calculated for each student and compared by BMI percentile subgroups using the two tailed T-test.
No statistical BMI differences occurred between intervention and control group children below the 25th percentile. Significance differences in BMI gain were noted from the 25th to the 50th percentile (P = 0.027), 50th-75th percentile (P = 0.045), and 75th-95th percentile (P = 0.00007), but not for the 95th-98th percentile (P = 0.288), 98th and above (P = 0.223), or both obese groups combined (P = 0.085).
Nutritional education and exercise can prevent but not treat obesity in predominately Hispanic first and second grade children. BMI subgroups should be studied to avoid masking differing outcomes of obese and nonobese children.
研究多种运动和营养教育干预措施对高危肥胖的 6 至 8 岁主要为西班牙裔儿童的 BMI 亚组不良体重指数（BMI）增加的影响。
在 4 所小学的 749 名一、二年级公立学校儿童中，在基线和 6 个月后记录 BMI 和人口统计学数据。两所学校（干预组）接受了 150 分钟的额外体育课、每周烹饪课、结构化营养课程和家长咨询。为每个学生计算 BMI 变化，并使用双尾 T 检验通过 BMI 百分位亚组进行比较。
在 25%以下的干预组和对照组儿童中，BMI 没有统计学差异。在 25%到 50%（P=0.027）、50%到 75%（P=0.045）和 75%到 95%（P=0.00007）的百分位亚组中，BMI 增长有显著差异，但在 95%到 98%（P=0.288）、98%及以上（P=0.223）或两个肥胖组合并（P=0.085）的亚组中没有差异。
营养教育和锻炼可以预防但不能治疗主要为西班牙裔的一、二年级儿童肥胖。应研究 BMI 亚组，以避免掩盖肥胖和非肥胖儿童的不同结果。
