Salamunes Ana Carla Chierighini, Stadnik Adriana Maria Wan, Neves Eduardo Borba
Graduate Program in Biomedical Engineering, Federal Technological University of Paraná - UTFPR, Av. Silva Jardim, 807, Block V3, 80230-000 Curitiba, PR, Brazil.
Graduate Program in Biomedical Engineering, Federal Technological University of Paraná - UTFPR, Av. Silva Jardim, 807, Block V3, 80230-000 Curitiba, PR, Brazil; Brazilian Army Research Institute of Physical Fitness, Av. João Luís Alves s/n, 22291-090 Rio de Janeiro, RJ, Brazil.
J Therm Biol. 2017 May;66:1-9. doi: 10.1016/j.jtherbio.2017.03.006. Epub 2017 Mar 18.
This study aimed to search for relations between body fat percentage and skin temperature and to describe possible effects on skin temperature as a result of fat percentage in each anatomical site. Women (26.11±4.41 years old) (n =123) were tested for: body circumferences; skin temperatures (thermal camera); fat percentage and lean mass from trunk, upper and lower limbs; and body fat percentage (Dual-Energy X-Ray Absorptiometry). Values of minimum (T), maximum (T), and mean temperatures (T) were acquired in 30 regions of interest. Pearson's correlation was estimated for body circumferences and skin temperature variables with body fat percentage. Participants were divided into groups of high and low fat percentage of each body segment, of which T values were compared with Student's t-test. Linear regression models for predicting body fat percentage were tested. Body fat percentage was positively correlated with body circumferences and palm temperatures, while it was negatively correlated with most temperatures, such as T and T of posterior thighs (r =-0.495 and -0.432), T of posterior lower limbs (r =-0.488), T of anterior thighs (r =-0.406) and T and T of posterior arms (r =-0.447 and -0.430). Higher fat percentages in the specific anatomical sites tended to decrease T, especially in posterior thighs, shanks and arms. Skin temperatures and body circumferences predicted body fat percentage with 58.3% accuracy (R =0.764 and R =0.583). This study clarifies that skin temperature distribution is influenced by the fat percentage of each body segment.
本研究旨在探寻体脂百分比与皮肤温度之间的关系，并描述各解剖部位的脂肪百分比对皮肤温度可能产生的影响。对123名年龄在26.11±4.41岁的女性进行了以下测试：身体周长；皮肤温度（热成像仪）；躯干、上肢和下肢的脂肪百分比及瘦体重；以及体脂百分比（双能X线吸收法）。在30个感兴趣的区域获取了最低温度（T）、最高温度（T）和平均温度（T）的值。对身体周长和皮肤温度变量与体脂百分比进行了Pearson相关性估计。将参与者按每个身体部位的高脂肪百分比组和低脂肪百分比组进行划分，对两组的T值进行了Student t检验。测试了用于预测体脂百分比的线性回归模型。体脂百分比与身体周长和手掌温度呈正相关，而与大多数温度呈负相关，如大腿后侧的T和T（r = -0.495和-0.432）、下肢后侧的T（r = -0.488）、大腿前侧的T（r = -0.406）以及手臂后侧的T和T（r = -0.447和-0.430）。特定解剖部位较高的脂肪百分比往往会降低T，尤其是在大腿后侧、小腿和手臂。皮肤温度和身体周长对体脂百分比的预测准确率为58.3%（R = 0.764和R = 0.583）。本研究表明，皮肤温度分布受每个身体部位脂肪百分比的影响。
