APEX: ADIPOSITY PREVENTION BY EXERCISE IN BLACK GIRLS

描述：（改编自研究者摘要） 这项研究是为了减少儿童肥胖的流行， 美国社会。参加剧烈运动项目的肥胖儿童显示， 对总身体脂肪百分比（BF百分比）和内脏脂肪的有益作用 组织（增值税）;然而，人们对如何防止总量增加知之甚少 身体或内脏肥胖的高风险青年，如非洲裔美国人（AA） 女性主要目的是检验一个假设，即一年的下午 运动计划将减少AA患者全身和内脏脂肪的增加 姑娘们该设计将涉及AA女孩的随机化，8至10年的 年龄（n=200）分为干预组或对照组。一年后，各小组 将进行比较，以检验主要假设。然后女孩们会交换 明年的小组任务。这三个时间段的数据模式 分数将显示在两年的时间里，年轻人， 或者没有参与锻炼计划。测量将包括： (1)双能X射线吸收法测定BF百分比;（2）VAT， 共振成像;（3）CV适应性与多阶段跑步机测试;（4）CVD 风险因素（即，总胆固醇与高密度脂蛋白胆固醇的比率， 胰岛素、收缩压和纤维蛋白原）;（5）自由生活锻炼， 饮食;（6）社会心理变量（即，自我效能和自我概念）; C7） 性成熟;（8）人体测量。演习计划将是 在附近的学校实施，每个工作日下午90分钟。 如果需要，将提供交通工具。会议将包括运动技能 指导和有氧运动。调查人员表示，该项目 具有重要的健康影响，原因如下。(1)他们指出 关于运动的影响， 在学校和社区环境中采取干预措施。(2)他们进一步指出，如果 这个项目表明，下午的锻炼计划减少了 一般和内脏肥胖，并有良好的影响，健身和健康 在肥胖的高危人群中， 实施类似的干预措施，以防止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.