Time required to stabilize thermographic images at rest |
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| Institution: | 1. Human Performance Laboratory – LAPEH, University Federal of Viçosa, MG, Brazil;2. Facultad de Ciencias de la Actividad Física y del Deporte – INEF, Universidad Politécnica de Madrid, Spain;3. School Physical Education, University Federal de Minas Gerais, BH, MG, Brazil;1. Sports Department, Physical Activity and Sports Faculty, Technical University of Madrid, Madrid, Spain;2. Faculty of Physical Education, Federal University of Juiz de Fora, Minas Gerais, Brazil;3. Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil;1. Biophysics and Medical Physics Group, Department of Physiology, University of Valencia, Valencia, Spain;2. Research Group in Sports Biomechanics (GIBD), Department of Physical Education and Sports, University of Valencia, Valencia, Spain;1. National Institute of Research and Development for Optoelectronics INOE 2000, Magurele, Romania;2. National Institute of Rehabilitation, Physical Medicine and Balneoclimatology, Bucharest, Romania;3. “Horia Hulubei” National Institute of Physics and Nuclear Engineering IFIN-HH, Magurele, Romania;1. Biophysics and Medical Physics Group, Department of Physiology. Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain;2. Research Group in Sport Biomechanics (GIBD), Department of Physical Education and Sports, University of Valencia, Valencia, Spain;3. Applied Neuromechanics Group, Laboratory of Neuromechanics, Federal University of Pampa, Uruguaiana, RS, Brazil;4. School of Physical Education of the Army, Brazilian Army Center for Physical Training, Rio de Janeiro, RJ, Brazil;1. Department of Human Functional Anatomy and Biometry Institute of Physical Culture and Health Promotion of Szczecin University, al. Piastów 40b, 71-065 Szczecin, Poland;2. Department of Functional Diagnostics and Physical Medicine, Faculty of Health Sciences, Pomeranian Medical University in Szczecin, ul. Grudziadzka 31, 70-103 Szczecin, Poland;3. Department of Physiology, Faculty of Biology of Szczecin University, ul. Felczaka 3c, 70–453 Szczecin, Poland;4. Independence Laboratory of Medical Biology, Department of Laboratory Diagnostics and Molecular Medicine Pomeranian Medical University in Szczecin al. Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland;1. Department of Biomedical Sciences for Health, Università degli Studi di Milano, Italy;2. Department of Physics, Università degli Studi di Milano, Italy;3. Metabolism Research Centre, IRCCS Policlinico San Donato Milanese, Milano, Italy |
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| Abstract: | Thermography for scientific research and practical purposes requires a series of procedures to obtain images that should be standardized; one of the most important is the time required for acclimatization in the controlled environment. Thus, the objective of this study was to identify the appropriate acclimatization time in rest to reach a thermal balance on young people skin. Forty-four subjects participated in the study, 18 men (22.3 ± 3.1 years) and 26 women (21.7 ± 2.5 years). Thermographic images were collected using a thermal imager (Fluke®), totaling 44 images over a period of 20 min. The skin temperature (TSK) was measured at the point of examination which included the 0 min, 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20. The body regions of interest (ROI) analyzed included the hands, forearms, arms, thighs, legs, chest and abdomen. We used the Friedman test with post hoc Dunn’s in order to establish the time at rest required to obtain a TSK balance and the Mann–Whitney test was used to compare age, BMI, body fat percentage and temperature variations between men and women, considering always a significance level of p < 0.05. Results showed that women had significantly higher temperature variations than men (p < 0.01) along the time. In men, only the body region of the abdomen obtained a significant variance (p < 0.05) on the analyzed period, both in the anterior and posterior part. In women, the anterior abdomen and thighs, and the posterior part of the hands, forearms and abdomen showed significant differences (p < 0.05). Based on our results, it can be concluded that the time in rest condition required reaching a TSK balance in young men and women is variable, but for whole body analysis it is recommended at least 10 min for both sexes. |
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| Keywords: | Thermoregulation Thermography Thermal imaging Temperature |
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