NOVEL INSTRUMENTS FOR MEASURING PHYSICAL ACTIVITY: A VALIDATION STUDY

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 这项研究将确定是否可以精确估计日常生活的能量消耗。 活动的能量消耗可以分为两组：运动相关产热和非运动活动产热（NEAT）。 NEAT是指在日常活动中消耗的能量，如占用，坐，站和坐立不安。 由于NEAT的组成成分多种多样，因此测量具有挑战性。 在这项研究中，身体活动测量系统（PAMS）将被用来测量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，并将在坐、站以及坐和站之间的过渡期间测量其能量消耗。 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，热量计是一种精确测量能量消耗的腔室。 这种比较将允许确定PAMS在测量NEAT时的准确度。

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.