Patterns of Physical Activity in Reduced-Obese Subjects

描述（由申请人提供）：这项为期两年的拟议项目旨在了解与未减少肥胖人群相比，减少肥胖人群的身体活动模式。只有一小部分成功减肥的人能够成功地长期保持体重。了解有助于预防体重反弹的因素可以帮助制定策略，使更多的人能够成功地保持体重。该项目将使用国家体重控制登记处的参与者，使用加速度计和体育活动问卷来确定成功减少肥胖人群的体育活动的数量、类型、频率、强度和持续时间，并与匹配的对照组进行比较。这一提议的一个主要假设是，成功减少肥胖的人会维持更高水平的体育活动，而这种高水平的体育活动是维持体重的主要因素。此外，我们假设成功减肥的受试者保持高度的自我监控，更有可能准确地报告他们的身体活动。以前没有研究评估过体重减轻的受试者的身体活动模式。

DESCRIPTION (provided by applicant): The 2 year proposed project is aimed at understanding the patterns of physical activity in a reduced obese population as compared to non -reduced controls. Only a minority of individuals who achieve substantial weight loss are able to succeed at long term weight loss maintenance. Understanding the factors that contribute to prevention of weight regain could aid in the development of strategies to enable more individuals to succeed at weight loss maintenance. Using participants from the National Weight Control Registry, the project will use accelerometers and physical activity questionnaires to determine the amount, type, frequency, intensity and duration of physical activity in a successfully reduced obese population as compared to matched controls. A major hypothesis of this proposal is that the successfully reduced obese sustain a higher level of physical activity, and it is this high level of activity that is a major factor in weight maintenance. In addition, we hypothesize that successfully reduced obese subjects maintain a high degree of self monitoring and will be more likely to accurately report their physical activity. No previous studies have assessed patterns of physical activity in reduced obese subjects.