Age-related differences in cutaneous warm sensation thresholds of human males in thermoneutral and cool environments
Age-related differences in cutaneous warm sensation thresholds of human males in thermoneutral and cool environments
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DOI：
10.1016/j.jtherbio.2010.11.007
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发表时间：
2011-03
影响因子：
2.7
通讯作者：
Y. Tochihara;Teruyuki Kumamoto;Joo-Young Lee;N. Hashiguchi
中科院分区：
文献类型：
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作者：
Y. Tochihara;Teruyuki Kumamoto;Joo-Young Lee;N. Hashiguchi
本研究的目的是研究在热中性（28°C）和凉爽环境（22°C）中，皮肤温度阈值对温热敏感性的年龄相关差异。使用热刺激器测量了12名年轻（22±1岁）和13名老年男性受试者（67±3岁）9个身体部位（脸颊、胸部、腹部、上臂、前臂、手、大腿、胫骨和足部）的外周温热阈值。结果表明：（1）在两种环境中，平均皮肤温度没有年龄差异;（2）在两种环境中，老年人的手、胫和脚的皮肤暖阈值显著高于年轻人（p<0.01），其余部位无年龄差异;（3）老年男性对两种环境最不敏感的部位是胫骨（p<0.01），青年组与Ta 28 ℃组无显著性差异;（4）在Ta 28和22°C时，老年人胫部对热的敏感性分别是面颊部的7倍和9倍;（5）Ta 22 ℃时的热阈比28 ℃时高3-4 ℃，仅老年男性的胫和足有显著性差异（p<0.05），而青年男性的热阈在Ta 22 ℃和28 ℃时差异不显著。结果表明，与年龄相关的差异，皮肤的温暖的感觉似乎是不均匀的身体和显着的四肢，有一个更大的钝的温暖的敏感性，在凉爽的环境中老年男性。
The purpose of this study was to investigate age-related differences in cutaneous temperature thresholds for warm thermal sensitivity in a thermoneutral (28°C) and in a cool environment (22°C). Peripheral warm thresholds were measured on nine body regions (cheek, chest, abdomen, upper arm, forearm, hand, thigh, shin, and foot) using a thermal stimulator in 12 young (22±1 years) and 13 elderly male subjects (67±3 years). The results showed that: (1) mean skin temperature did not differ by age in both environments; (2) the cutaneous warm thresholds for the hand, shin, and foot were significantly higher for the elderly than for the young in both environments (p<0.01), whereas the remaining body parts showed no age difference; (3) the most insensitive region for elderly males was the shin for both environments (p<0.01), while for young there was no statistical significant difference with Ta28°C; (4) the shin of the elderly was seven and nine times less sensitive to warmth when compared to those of the cheek at Ta28 and 22°C, respectively; and (5) warm thresholds were 3–4°C greater at Ta22°C than at 28°C, only for the elderly males' shin and foot (p<0.05), while for young the difference between Ta22 and 28°C was not statistically significant. The results indicate that age-related differences in cutaneous warm perception appear to be non-uniform over the body and significant on extremities; there is a greater bluntness of warm sensitivity in the cool environment for elderly males.