THE METABOLIC RATE AND HEAT LOSS OF FAT AND THIN MEN IN HEAT BALANCE IN COLD AND WARM WATER
THE METABOLIC RATE AND HEAT LOSS OF FAT AND THIN MEN IN HEAT BALANCE IN COLD AND WARM WATER
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DOI：
10.1113/jphysiol.1960.sp006582
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发表时间：
1960-01-01
影响因子：
5.5
通讯作者：
KEATINGE, WR
中科院分区：
文献类型：
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作者：
CANNON, P;KEATINGE, WR
当沐浴温度低于33℃时，肥胖和瘦弱青年在水中热平衡中的代谢率都有所上升，但直到水温大大降低后，肥胖青年才达到最大的组织绝缘。因此，通常使用的“临界温度”概念在胖子的情况下是无效的，并提出了替代术语。当沐浴温度低于33℃时，脂肪代谢率的上升幅度小于瘦子；瘦人的直肠稳定温度在冷水中比在温水中低，而最胖的人则不然。由此得出结论，胖子对寒冷的小代谢反应是由于皮肤的反射，而瘦子则由于深层温度的下降和深层温度受体的刺激而加强了这种反应。胖子比瘦子获得了更高的最大组织绝缘，并能将他们的体温在水中稳定到10-12摄氏度。在较冷的水中，他们手指的热量损失以周期性的方式上升，他们的组织绝缘性下降了约50%，他们的直肠温度下降。工作加速了胖子和瘦子的直肠温度的下降，因为水太冷，他们静止时无法稳定直肠温度。
The metabolic rate of both fat and thin young men in heat balance in water rose when the bath temperature was lowered below 33[degree]C, although the fat men did not achieve their maximal tissue insulation until the water temperature was much lower. The commonly used concept of "critical temperature" was therefore not valid in the case of the fat men and alternative terms are proposed. The metabolic rate rose less in fat than in thin men when the bath temperature was lowered below 33[degree]C; the stable rectal temperature of the thin men was lower in cold than in warm water, while that of the fattest men was not. It is concluded that the fat men''s small metabolic response to cold was due to reflexes from the skin, while in the thin men these were reinforced by a fall in deep temperature and stimulation of deep temperature receptors. The fat men achieved a higher maximal tissue insulation than thin men and could stabilize their body temperature in water down to 10-12[degree]C. In colder water heat loss from their fingers rose in a cyclical manner, their tissue insulation fell by about 50% and their rectal temperatures fell. Work accelerated the fall in rectal temperature of both fat and thin men in water just too cold for them to stabilize their rectal temperature when still.