NOVEL INSTRUMENTS FOR MEASURING PHYSICAL ACTIVITY: A VALIDATION STUDY

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。受试者将在实验室环境中佩戴PAMS，并在坐着、站着以及坐着和站着之间的转换过程中测量他们的能量消耗。从PAMS获得的能量消耗信息将与从整个房间热量计获得的信息进行比较，整个房间热量计是一个准确测量能量消耗的腔室。通过这种比较，可以确定PAMS在测量NEAT时的准确度水平。

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 lab setting and 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 from a whole room calorimeter, a chamber that accurately measures energy expenditure. This comparison will allow a determination of the accuracy level of PAMS in measuring NEAT to be made.