Larson Nicole I, Neumark-Sztainer Dianne, Harnack Lisa, Wall Melanie, Story Mary, Eisenberg Marla E
University of Minnesota, Minneapolis, 55454, USA.
J Nutr Educ Behav. 2009 Jul-Aug;41(4):254-60. doi: 10.1016/j.jneb.2008.05.001.
To describe changes in calcium and dairy intake during the transition from middle adolescence to young adulthood and to identify baseline correlates of calcium intake in young adulthood.
Population-based, 5-year follow-up study (Project EAT: Eating Among Teens).
Baseline surveys were completed in Minneapolis/St. Paul, MN schools and by mail at follow-up.
Males and females (N = 1521) attending high school at baseline (mean age = 15.9 years) and with a mean age of 20.5 years at follow-up.
Calcium intake.
Mixed and linear regression methods were used to respectively examine trends and correlates of intake.
During the transition to young adulthood, mean daily calcium intakes of females and males decreased by an average of 153 mg and 194 mg respectively. Mealtime milk availability, health/nutrition attitudes, taste preference for milk, healthful weight control behaviors, and peer support for healthful eating at baseline were associated with better follow-up calcium intake. Time spent watching television and lactose intolerance were associated with lower intake at follow-up.
Nutrition interventions are needed to counter longitudinal decreases in calcium intake. Interventions targeted to adolescents should address the availability of milk at meals and other identified supports for healthful eating.
描述从青春期中期到青年期过渡期间钙摄入量和乳制品摄入量的变化，并确定青年期钙摄入量的基线相关因素。
基于人群的5年随访研究（青少年饮食项目：青少年饮食情况）。
基线调查在明尼阿波利斯/圣保罗的明尼苏达州学校完成，随访通过邮寄进行。
基线时为高中生（N = 1521）的男性和女性（平均年龄 = 15.9岁），随访时平均年龄为20.5岁。
钙摄入量。
采用混合和线性回归方法分别检查摄入量的趋势和相关因素。
在向青年期过渡期间，女性和男性的平均每日钙摄入量分别平均减少了153毫克和194毫克。基线时用餐时牛奶的供应情况、健康/营养态度、对牛奶的口味偏好、健康的体重控制行为以及同伴对健康饮食的支持与随访时更好的钙摄入量相关。看电视的时间和乳糖不耐受与随访时较低的摄入量相关。
需要采取营养干预措施来应对钙摄入量的长期下降。针对青少年的干预措施应解决用餐时牛奶的供应问题以及其他已确定的对健康饮食的支持因素。
