NOVEL INSTRUMENTS FOR MEASURING PHYSICAL ACTIVITY: ASSESSED IN LEAN&OBESE HUMANS

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 这项研究将决定能否准确估计日常生活的能量消耗。运动所消耗的能量可以分为两类：运动相关的生热作用和非运动活动的生热作用(NEAT)。整洁是指在日常活动中所消耗的能量，如工作、坐、立和坐立不安。由于NEAT的组成成分多种多样，测量起来很有挑战性。在这项研究中，将使用体力活动测量系统(PAMS)来测量NEAT。PAMS由可以确定身体位置和运动的小型设备组成。受试者将在自由生活的环境中和实验室环境中佩戴PAMS，在那里他们的能量消耗将在坐着、站着以及坐着和站着之间的转换过程中进行测量。从PAMS获得的能源消耗信息将与实验室测试获得的信息进行比较。将比较瘦和肥胖受试者在能量消耗、步行速度、步行运动量和步行分钟数方面的差异。这一对比将让我们深入了解瘦人和肥胖者在能量平衡方面的差异。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. This study will determine if the energy expenditure of daily living can be precisely estimated. Energy expenditure from activity can be broken down into two groups: exercise-related thermogenesis and non-exercise activity thermogenesis (NEAT). NEAT is the energy expended during daily activities such as occupation, sitting, standing, and fidgeting. Due to the variety of the components of NEAT, it is challenging to measure. In this study a Physical Activity Measuring System (PAMS) will be used to measure NEAT. PAMS consists of small devices that can determine body position and motion. Subjects will wear PAMS in a free-living environment and in a lab setting where their energy expenditure will be measured during sitting, standing, and the transition between sitting and standing. The energy expenditure information obtained from PAMS will be compared to information obtained the lab testing. Differences in energy expenditure, walking velocity, walking movement, and minutes spent walking will be compared between lean and obese subjects. This comparison will give insight into the differences in energy balance between lean and obese humans.