Produção Nacional
Daily oscillations of skin temperature in military personnel using thermography
2015; BMJ; Volume: 162; Issue: 5 Linguagem: Inglês
10.1136/jramc-2015-000462
ISSN2052-0468
AutoresCarlos Magno Amaral Costa, Manuel Sillero Quintana, Sergio Piñonosa Cano, Danilo Gomes Moreira, Ciro José Brito, A.A. Fernandes, Guilherme de Azambuja Pussieldi, João Carlos Bouzas Marins,
Tópico(s)Climate Change and Health Impacts
ResumoThe human body makes many physiological adjustments throughout the day, including adjustments to body temperature. The purpose of this study was to determine oscillations in the skin temperature (Tsk-1-Tsk-25) at 25 body regions of interest (ROIs) over 1 day using infrared thermography.Tsk values of 31 male (age 22.9±3.0 years) Brazilian Air Force members were evaluated from five thermograms collected at 7, 11, 15, 19 and 23 h (Tsk7,11,15,19,23) by a Fluke imager. We applied one-way analysis of variance for repeated measures for the different times of the day and Tukey's post hoc test to determine significant Tsk differences between ROIs (α=0.05), and the cosinor analysis was used to determine the midline estimating statistic of rhythm, amplitude and acrophase of Tsk during the 24 h period.The anterior hands showed the greatest Tsk variations throughout the day. In the lower limbs, scapula, abdomen, chest and lower back, Tsk-11, Tsk-15, Tsk-19 and Tsk-23 were significantly different (p<0.05) from Tsk-7. The lowest Tsk values were obtained in the early morning, with increases in the afternoon and levelling after 15:00.The Tsk at all ROIs and the averaged Tsk showed oscillations throughout the day, with the lowest values in the early morning (07:00). Temperature fluctuations depended on the specific ROI, with thermal stabilisation in some regions in the afternoon and a central upward trend throughout the day in the hands.
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