四川省青少年饮食环境、体力活动与体质的关系研究
Study on the Relationship between Dietary Environment, Physical Activity and Physical Fitness of Teenager in Sichuan Province

采用分层随机整体抽样法对四川省青少年体力活动水平、饮食环境和体质状况进行调查，并用独立样本T检验、单因素方差分析、相关性分析、回归分析，探究食物环境、体力活动水平与学生体质的关系。结果显示，1) 四川省青少年体质状况在性别(P = 0.003)、是否为独生子女(P = 0.016)方面的检出差异具有统计学意义，表现为消瘦女生偏多，非独生子女的超重肥胖偏多。2) 不同BMI等级青少年在交通出行时间(P = 0.03)、不健康食物环境(P = 0.000)和休闲性体力活动水平(P = 0.049)上存在差异性。3) 相关和回归分析结果表明，BMI与交通性体力活动(P = 0.003)和不健康饮食环境(P = 0.007)存在正相关，二者可以解释8.3%的BMI。4) 交通性体力活动减少和不健康饮食环境是导致青少年肥胖的原因。
The stratified random overall sampling method was used to investigate the physical activity level, dietary environment and physical condition of college students in Sichuan Province, and the in-dependent sample T test, one-way analysis of variance, correlation analysis and regression analysis were used to explore the food environment, physical activity level relationship with students’ physique. The results show that, 1) There were statistically significant differences in gender (P = 0.003) and whether they were an only child (P = 0.016) in the physical status of adolescents in Si-chuan Province, which showed that there were more thin girls, and more overweight and obesity than non-only children. 2) Students with different BMI grades have differences in travel time (P = 0.03), unhealthy food environment (P = 0.000) and leisure physical activity level (P = 0.049). 3) The results of correlation and regression analysis showed that BMI was positively correlated with traffic-related physical activity (P = 0.003) and unhealthy eating environment (P = 0.007), which could explain 8.3% of BMI. 4) Reduced physical activity and unhealthy eating environment are the causes of obesity in college students.