Near infrared and thermal imaging of normal and obese women during oral glucose tolerance test (OGTT)

Originally considered as an imbalance between energy intake and expenditure, obesity is studied in this paper by comparing body temperature of abdomen, neck and hand in obese subjects to lean ones with oral glucose tolerance test during thermos neutral and cold conditions. We studied obese and normal weight females with infrared thermal imaging (IRT) and near infrared spectroscopy (NIRS). We observed that a significantly reduced temperature was much more prevalent in the obese subjects around abdominal area and relatively higher temperature on the hand of obese subjects as compared to lean ones. However, we observe the higher oxygen saturation in obese females in both hand and abdomen.