To compare different types of activity trackers recording physical activity energy expenditure PAEE and examine their criterion validity against indirect calorimetry IC as the gold standard in adults over 60 years of age with a special focus on women with cardiovascular risk.
Synchronous registrations of PAEE were performed with up to four different devices to determine criterion validity against IC while participants performed a protocol of simulated activities in a laboratory setting.
Thirty-four participants 25 women, 9 men with at least a light cardiac risk performed a protocol of simulated activities in a laboratory setting daily living activities, cycle ergometer test.
The ActiGraph 0. The magnitude of the deviation varied considerably depending on the activity e. The research-grade activity trackers estimated PAEE with higher validity than the commercially available activity trackers.
The partly very wide LoA have to be critically considered when assessing PAEE in the context of health service research, as individual Physical Activity behaviour may be under- or overestimated. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
