I have a few sets of GT3X+ that I am using to measure levels of physical activity of adolescents. The Actilife software that I have which supports these data is ActiLife 6. Has anyone used these accelerometers to calculate energy expenditure and also to compare the data obtained with a subjective measure like a questionnaire for instance?Thanks
- Hi Iam using GT3X+, I am doing a research in this way to calculate TEE, Iam using external equation
Hi Pri. I disabled that option in the software. It will give you always only an estimated idea about it. The accelerometer can measure activity. How much energy is expended doing the same activity? It will depending on factors that you have no possibility to control (ie. motor control and economy of effort)
dear Pri, this system is very widely used, but depending on the question you want to answer with your measurement, you have to take into account that there is a strong influence of the frequencies of the movements to the amplitude of the measurement. There are also some publications about this.
The correlation with questionaires is very low, also shown in different publications, e.g. Ebner-Priemer
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