Methods for Improved Diet & Exercise Measurement

改善饮食的方法

• 批准号: 7028092
• 负责人: DEBORAH J TOOBERT
• 金额: $ 45.8万
• 依托单位: OREGON RESEARCH INSTITUTE
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-01 至 2009-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7028092
• 关键词: DVD /CD ROM; clinical research; diet; exercise; measurement; obesity

DESCRIPTION (provided by applicant): Overweight and obesity are principal public health problems in the United States, and constitute two of the leading preventable causes of death. The primary outcomes for randomized clinical trials and epidemiological investigations addressing the obesity problem are caloric intake and caloric expenditure. Thus, accurate assessment of diet and physical activity (PA) behaviors is necessary for epidemiological, clinical, and research purposes. The validity of diet and PA outcomes is partially based on the accuracy of self-reported dietary portions and PA intensity. The primary goal of this investigation is to . improve dietary portion size and PA intensity measurement among older, overweight adults, using innovative, interactive computer technology and state-of-the-art statistical methods. Therefore, this project address several goals ofPAR-03-009 by addressing the assessment of both diet and physical activity, examining the older population, using a novel technology, and applying advanced statistical techniques. A CD-ROM will be developed based on available self-report instruments (Le., the NCI Fruit and Vegetable Screener, the Block Fat Screener, and the CHAMPS Activity Questionnaire for Older Adults) with the addition of engaging and instructive video to clarify serving sizes (diet) and intensity of activity (PA) and to provide immediate scoring and feedback. CD-ROM measurement will be compared to paper-and-pencil surveys as well as objective measures of diet (3-day dietary recalls; validation of portion sizes using food .models) and PA (activity monitors and diaries). In addition to standard, regression-based analyses, structural equation, latent class, and mixture modeling techniques will be used to account for measurement error and determine the existence of unobserved groups of respondents who report similarly on measures. A total of 220 heterogenous, older, overweight adults will be recruited for this project. Participants will be asked to complete the CD-ROM assessment, along with paper-and-pencil assessments and objective measurements, then will be retested 2 weeks later. Strengths of the proposed study include a team with a strong record in diet, PA, and CD-ROM intervention and assessment research as well as instrument development and statistical/methodological innovation; the use of new technology and analytic techniques; validation of self-report assessment procedures against more objective diet and physical activity measures. Relevance: This project addresses overweight and obesity, principal public health problems in the United States, and the leading preventable cause of death, by developing a more accurate and efficient assessment tool for dietary serving sizes [and PA intensity, an area routinely neglected in diet and PA research. This tool could be used for health research and clinical practice applications to serve the broad NIH goal of understanding control of obesity and health enhancement.

描述（由申请人提供）：超重和肥胖是美国的主要公共卫生问题，构成了两个主要可预防的死亡原因。解决肥胖问题的随机临床试验和流行病学研究的主要结果是热量摄入和热量消耗。因此，对于流行病学，临床和研究目的，需要准确评估饮食和体育锻炼（PA）行为。饮食和PA结果的有效性部分基于自我报告的饮食部分和PA强度的准确性。这项调查的主要目标是。使用创新的，交互式计算机技术和最先进的统计方法，改善了较老的，超重的成年人的饮食部分的大小和PA强度测量。因此，该项目通过解决饮食和体育锻炼的评估，使用新技术和应用先进的统计技术来解决PAR-03-009的几个目标。 CD-ROM将根据可用的自我报告仪器（LE。，NCI水果和蔬菜筛选器，Block Fat Screener和Champs Activity问卷调查）开发，并添加引人入胜的录像带，以阐明活动尺寸（饮食）和活动强度（PA）并立即提供评分和反馈。 CD-ROM测量将与纸笔调查以及饮食的客观测量（为期3天的饮食召回；使用食品.Models .Models验证部分大小）和PA（活动监测器和日记）。除标准外，还将使用基于回归的分析，结构方程，潜在类和混合建模技术来说明测量误差，并确定相似地报告措施的未观察到的受访者组的存在。该项目将招募共招募220个异质的，年龄较大的超重成年人。将要求参与者完成CD-ROM评估，以及纸笔评估和客观测量，然后在2周后重新测试。拟议的研究的优势包括一个在饮食，PA和CD-ROM干预和评估研究以及仪器开发以及统计/方法论创新方面具有良好记录的团队；使用新技术和分析技术；根据更客观的饮食和体育锻炼措施来验证自我报告评估程序。相关性：该项目通过为饮食和PA强度（PA强度，在饮食和PA研究中经常忽视的领域）开发更准确，更有效的评估工具，解决了超重和肥胖，美国的主要公共卫生问题以及可预防的死亡原因。该工具可用于健康研究和临床实践应用，以实现了解控制肥胖和增强健康的广泛目标。