Lifestyle, Adiposity, and Cardiovascular Health in Youth
2018年1月10日 更新者:Augusta University
Lifestyle, Adiposity, and Cardiovascular Health in Youth Study
Adiposity is a key link between lifestyle factors (like diet and exercise) and cardiovascular (CV) disease.
However, little is known about the link during the juvenile years, when the processes leading to CV disease are at an early stage of development.
The specific aims are as follow: (1) to determine the relations of free-living diet and exercise to total body percent fat ( percentBF), visceral adipose tissue and CV fitness in black and white boys and girls of varying socioeconomic status.
(2) to determine the relations of fatness and fitness to different CV disease risk factors.
Design and methods: (1) Recruit 800 14 to 18 year olds, 200 in each ethnicity and gender subgroup.
(2) Assess diet with seven 24-hour recalls, and exercise with two seven-day recalls and heart rate monitoring.
(3) Measure percent body fat with dual-energy x-ray absorptiometry, visceral adipose tissue with magnetic resonance imaging and CV fitness with a multi-stage treadmill test.
(4) Measure major fatness- and fitness-related CV disease risk factors (e.g., total cholesterol:HDL cholesterol ratio, insulin, systolic blood pressure, left ventricular mass indexed to height, fibrinogen).
(5) Conduct multivariate and univariate analyses to determine relationships.
研究概览
详细说明
Adult studies have shown that adiposity, especially visceral adipose tissue, and cardiovascular (CV) fitness are key links between lifestyle factors like diet and exercise on one hand, and CV disease on the other.
However, very little is known about these links during the juvenile years, when the processes leading to CV disease are at an early stage of development.
The specific aims are as follow: (1) to determine the relations of free-living diet and exercise to total body percent fat ( percent BF), visceral adipose tissue and CV fitness in black and white boys and girls of varying socioeconomic status.
(2) to determine the relations of fatness and fitness to different CV risk factors.
Design and methods: (1) Recruit 800 14 to 18 year olds, 200 in each ethnicity and gender subgroup.
(2) Assess diet with seven 24-hour recalls, and exercise with two seven-day recalls and Actigraph monitors.
(3) Measure percent body fat with dual-energy x-ray absorptiometry, visceral adipose tissue with magnetic resonance imaging and CV fitness with a multi-stage treadmill test.
(4) Measure major fatness- and fitness-related CV disease risk factors (e.g., total cholesterol:HDL cholesterol ratio, insulin, systolic blood pressure, left ventricular mass indexed to height, fibrinogen).
(5) Conduct multivariate and univariate analyses to determine relationships.
Health relatedness: The provided by this project will assist in the formulation of effective lifestyle interventions targeted to specific demographic groups for primary prevention of CV disease, starting early in life when the foundations for adult disease are being laid.
研究类型
观察性的
注册 (实际的)
796
参与标准
研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
14年 至 18年 (孩子、成人)
接受健康志愿者
是的
有资格学习的性别
全部
取样方法
非概率样本
研究人群
Recruit 800 14 to 18 year olds, 200 in each ethnicity (European or African American) and gender subgroup.
描述
Inclusion Criteria:
- European or African American and age 14-18 years
Exclusion Criteria:
- Taking medications or had any chronic medical conditions that might affect growth, maturation, physical activity, nutritional status, or metabolism.
学习计划
本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。
研究是如何设计的?
设计细节
研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
---|---|---|
Fatness
大体时间:Through study completion, an average of 4 years
|
Percentage of body fat (%)
|
Through study completion, an average of 4 years
|
Fitness
大体时间:Through study completion, an average of 4 years
|
Maximal oxygen consumption (VO2, mL/kg/min)
|
Through study completion, an average of 4 years
|
Insulin resistance
大体时间:Through study completion, an average of 4 years
|
Fasting insulin (pmol/L)
|
Through study completion, an average of 4 years
|
次要结果测量
结果测量 |
措施说明 |
大体时间 |
---|---|---|
Fat distribution
大体时间:Through study completion, an average of 4 years
|
Visceral adipose tissue volume (cm^3)
|
Through study completion, an average of 4 years
|
Cardiovascular risk factor
大体时间:Through study completion, an average of 4 years
|
Triglyceride (TG, mmol/L) and high density lipoprotein cholesterol (HDLC, mmol/L) will be combined to report TG/HDLC ratio
|
Through study completion, an average of 4 years
|
合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (实际的)
2001年8月1日
初级完成 (实际的)
2004年7月31日
研究完成 (实际的)
2005年1月1日
研究注册日期
首次提交
2017年12月18日
首先提交符合 QC 标准的
2018年1月10日
首次发布 (实际的)
2018年1月12日
研究记录更新
最后更新发布 (实际的)
2018年1月12日
上次提交的符合 QC 标准的更新
2018年1月10日
最后验证
2018年1月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.
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