APEX: ADIPOSITY PREVENTION BY EXERCISE IN BLACK GIRLS

描述：(改编自《调查员摘要》) 这项研究是为了减少困扰儿童肥胖的流行病。 美国社会。参加剧烈运动计划的肥胖儿童显示 对全身脂肪百分比(BF百分比)和内脏脂肪的有益影响 组织(增值税)；然而，关于如何防止总 非裔美国人(AA)等高危青年的身体或内脏肥胖 女性。主要目的是检验假设，一年的下午 运动计划将减少再生障碍性贫血患者全身和内脏肥胖的增加 女孩们。这项设计将涉及AA女孩的随机化，8到10岁 年龄(n=200)分为干预组和对照组。一年后，这些团体 将被比较以检验最初的假设。然后女孩们就会互换 下一年的小组作业。三个时间段内的数据模式 Points将显示年轻人在两年内发生的事情， 或者没有参与到锻炼计划中。这些措施将包括： (1)双能X射线吸收法测定高炉百分含量；(2)磁性增值税 磁共振成像；(3)多阶段跑步机试验的CV适合性；(4)心血管疾病 危险因素(即总胆固醇与高密度脂蛋白胆固醇的比率， 胰岛素、血压和纤维蛋白原)；(5)自由生活运动和 饮食；(6)心理社会变量(即自我效能和自我概念)；C7) 性成熟；(8)人体测量。锻炼计划将是 在社区学校实施，每个工作日下午90分钟。 如有需要，将提供交通工具。课程将包括运动技能 指导和有氧运动。调查人员表示，这个项目 具有重要的健康影响，原因如下。(1)声明 关于锻炼效果的信息很匮乏 在学校和社区环境中的干预。(2)它们还规定，如果 该项目表明，下午的锻炼计划可以减少 全身和内脏肥胖，对健身和健康有良好的影响 在肥胖风险很高的人群中，学校可能会受到鼓励 实施类似的干预措施，以预防青少年肥胖和相关的 健康问题。

DESCRIPTION: (Adapted from Investigator's Abstract) The long term objective of this research is to reduce the epidemic of child obesity that is afflicting U.S. society. Obese children who engage in vigorous exercise programs show beneficial effects on total body percent fat (percent BF) and visceral adipose tissue (VAT); however, little is known about how to prevent accretion of total body or visceral adiposity in high risk youths, such as African-American (AA) females. The primary aim is to test the hypothesis that a one year afternoon exercise program will reduce accretion of general and visceral adiposity in AA girls. The design will involve randomization of AA girls, eight to 10 years of age (n=200) into intervention or control groups. After one year, the groups will be compared to test the primary hypothesis. Then the girls will switch group assignments for the next year. The pattern of data over the three time points will show what happens over a two year period in which the youths are, or are not, involved in the exercise program. The measurements will include: (1) percent BF with dual-energy x-ray absorptiometry; (2) VAT with magnetic resonance imaging; (3) CV fitness with a multi-stage treadmill test; (4) CVD risk factors (i.e., the ratio of total to high density lipoprotein cholesterol, insulin, systolic blood pressure, and fibrinogen); (5) free-living exercise and diet; (6) psychosocial variables (i.e., self-efficacy and self-concept); C7) sexual maturation; (8) anthropometric measures. The exercise program will be implemented in neighborhood schools for 90 minutes each weekday afternoon. Transportation will be provided if needed. Sessions will include motor skill instruction and aerobic exercises. The investigators state that this project has important health implications for two reasons, as follow. (1) They state that there is a dearth of information concerning the effects of exercise interventions in school and community settings. (2) They further state that if this project shows that an afternoon exercise program reduces accretion of general and visceral adiposity and has a favorable impact on fitness and health in a population that is at high risk of obesity, then schools may be encouraged to implement similar interventions to prevent juvenile obesity and associated health problems.