Técnicas de mensuração da temperatura corporal: uma especial atenção para as variações da temperatura da pele mensuradas por termografia ao longo do dia

• Autor(a) principal: Costa, Carlos Magno Amaral
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3483
• topic: Temperatura da pele; Termografia; Termorregulação; Skin temperature; Thermography; Thermoregulation; CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA

This dissertation was proposed with two main objectives: a) analyze the different methods for measurement of core temperature, favorable and unfavorable aspects during exercise; b) identifying the occurrence of daily variation in skin temperature (Tskin) both men and women using the technique of infrared thermography. To elucidate the first objective was a study review that identified six main techniques for measuring the core temperature. The rectal and gastrointestinal temperature seem to be the most used methods in physical exercise, however, no method should be deleted without first being analyzed its limitations, the type of exercise performed and the goals of the central temperature record. To achieve the second objective two studies were conducted which involved a total sample of 31 male military and 20 women military.The evaluated were subjected to the same physical training for at least six months, were nonsmokers or patients with inflammatory pathological condition or a problem that could change the Tskin. The thermographic images were collected in a room heated to 23°C ± 1°C and obtained by the thermal imager positioned 4 m away from the volunteer. We collected 4 images encompassing the 25 body regions of interest (RBI), this procedure was repeated along the same day on five occasions at 7h, 11h, 15h, 19h and 23h. For the thermal behavior was also considered the overall average temperature of the skin. We applied the One Way ANOVA with repeated measures followed by post-hoc Tukey test to determine significant differences between different times of day in each RBI. The significance level of p<0,05 was adopted for all calculations which were performed in SigmaPlot software, version 11. In all the RBI in both men and women statistical differences were observed, clearly indicating a change in temperature of the skin throughout the day with RCI each having a specific thermal behavior. However, both for men [31.4±0.7ºC] as for women [30.2±0.7ºC], the lowest temperature tends to be 7h, temperature peak in men [32.3 ± 0.8°C] tends to be 23h, in women [32.5 ± 0.4ºC] this behavior was most clearly observed 15h. Temperature differences between the segments when comparing the sides of the body are usually lower than 0.5ºC in both genres. In men, the anterior surface of the hands was the region with the greatest variation throughout the day, with a difference of 4.4 and 4.5°C between the first and last record. The women the region with the biggest difference were the right and left hands regions preceding and subsequent with oscillations of 3.1 to 3.0°C and 2.7 and 3.0°C respectively. Are considered as findings of this work: 1ª) The methods of registration of core temperature recommended during physical exercise are Trectal, mainly in laboratory environment, and Tgastrointestinal besides having the advantage use in real-world exercise even outside the laboratory; 2ª) both in men as in women, the Tskin of all RBI analyzed and mean skin temperature (MTSkin) showed fluctuations throughout the day with lowest values in the early morning (7h); 3ª) The temperature fluctuations are observed depending on the specific RBI, with periods of thermal stabilization in some regions and an increasing trend of Tskin throughout the day; 4ª) The bilateral RBI have the same thermal behavior.