Finally had some time to do some research on the Microsoft band and all there sensors, to find a reason for the GSR sensor. Which thought it could be use for Measuring fluid levels and I was correct , coming from the Journal of Medical Systems. The device they use was the ti chronos ez430. Going to do the 2 week trail so I can read the whole abstract and see what they found. You can read the first 2 page which is very interesting.
(Heart Rate, Galvanic Skin Response and Skin Temperature + formula + users body mass index = estimation for the amount of fluid lost is determined)
Towards a Smart Non-Invasive Fluid Loss Measurement System - Springer
Journal of Medical Systems
February 17, 2015
"In this article, a smart wireless sensing non-invasive system for estimating the amount of fluid loss, a person experiences while physical activity is presented. The system measures three external body parameters, Heart Rate, Galvanic Skin Response (GSR, or skin conductance), and Skin Temperature. These three parameters are entered into an empirically derived formula along with the user?s body mass index, and estimation for the amount of fluid lost is determined."
(Heart Rate, Galvanic Skin Response and Skin Temperature + formula + users body mass index = estimation for the amount of fluid lost is determined)
Towards a Smart Non-Invasive Fluid Loss Measurement System - Springer
Journal of Medical Systems
February 17, 2015
"In this article, a smart wireless sensing non-invasive system for estimating the amount of fluid loss, a person experiences while physical activity is presented. The system measures three external body parameters, Heart Rate, Galvanic Skin Response (GSR, or skin conductance), and Skin Temperature. These three parameters are entered into an empirically derived formula along with the user?s body mass index, and estimation for the amount of fluid lost is determined."