A Pilot Study of Infrared Thermography Based Assessment of Local Skin Temperature Response in Overweight and Lean Women during Oral Glucose Tolerance Test

Abstract

Obesity is recognized as a major public health issue, as it is linked to the increased risk of severe pathological conditions. The aim of this pilot study is to evaluate the relations between adiposity (and biophysical characteristics) and temperature profiles under thermoneutral conditions in normal and overweight females, investigating the potential role of heat production/dissipation alteration in obesity. We used Infrared Thermography (IRT) to evaluate the thermogenic response to a metabolic stimulus performed with an oral glucose tolerance test (OGTT). Thermographic images of the right hand and of the central abdomen (regions of interests) were obtained basally and during the oral glucose tolerance test (3 h OGTT with the ingestion of 75 g of oral glucose) in normal and overweight females. Regional temperature vs BMI, % of body fat and abdominal skinfold were statistically compared between two groups. The study showed that mean abdominal temperature was significantly greater in lean than overweight participants (34.11 ± 0.70 °C compared with 32.92 ± 1.24 °C, p < 0.05). Mean hand temperature was significantly greater in overweight than lean subjects (31.87 ± 3.06 °C compared with 28.22 ± 3.11 °C, p < 0.05). We observed differences in temperature profiles during OGTT between lean and overweight subjects: The overweight individuals depict a flat response as compared to the physiological rise observed in lean individuals. This observed difference in thermal pattern suggests an energy rate imbalance towards nutrients storage of the overweight subjects.

Thermal imaging method to evaluate childhood obesity based on machine learning techniques

“…Whereas, hand's mean temperature was reported to be greater in obese (31.87 ± 3.06 C) than in normal (28.22 ± 3.11 C) women. 18 Similar results were depicted in our study, where the average mean temperature on abdomen skin surface was estimated to be 35.67 ± 0.91 C for normal, 31.04 ± 0.49 C for obese. Whereas, in fingerbed region, the normal and obese temperature was found to be 32.71 ± 1.06 C and 35.12 ± 0.83 C, respectively.…”

“…17 Jalil et al investigated the role of change in body heat and performed the skin surface temperature mapping for abdomen and fingerbed region in obese and normal women. 18 Savastano et al demonstrated the relationship impacting the abdominal and fingerbed temperature variation in normal and obese individuals. 19 Heuberger et al studied the correlation between the waist circumference (WC) and IRT imaging among normal and obese participants.…”

Clinical approach to colic and collapse in an Asian elephant (Elephas maximus) with Salmonella saintpaul septicaemia and subsequent ileus

“…The main confounding factors in this case were that the highest readings were at different anatomical sites in each elephant (Figure 1) and that the control elephant was overconditioned compared to the study subject. In human studies, lean patients will show higher temperatures on thermal imaging than obese patients, 16 and one might therefore expect the over‐conditioned elephant to measure lower on surface temperature. The actual core temperature difference between the recumbent and standing elephants may have been greater than measured, which supports the assumption that the recumbent elephant was most likely hypothermic.…”

Thermographic Analysis of the Metacarpal and Metatarsal Areas in Jumping Sport Horses and Leisure Horses in Response to Warm-Up Duration

“…The thermographic method was applied to determine the surface temperature of the metacarpus and metatarsus areas in the four limbs. The images were taken with a FLUKE Ti9 thermal imager, with an uncooled microbolometer sensor and a focal plane array of 120/160 pixels, with an infrared spectral band of 7.5-14 µm (Fluke Corporation, Everett, Washington, DC, USA) [23]. The standard procedures were followed during the image taking, i.e., the horse was in a dark and windless place, with a relatively constant air temperature [18,24].…”