Jéquier E
Bibl Radiol. 1975(6):185-90.
The gradient layer direct calorimeter built in Lausanne allows proportionate measurement of respiratory and cutaneous heat losses. The latter consists of evaporative and convective plus radiative heat losses, which are separately measured. Obese subjects had lower heat losses and higher thermal body insulation than controls. The decreased heat loss may contribute to their positive energy balance by decreasing the energy cost of maintaining body temperature during cold exposure. The changes in heat loss during exercise are also illustrated.
洛桑制造的梯度层直接热量计能够按比例测量呼吸和皮肤的热量损失。后者包括蒸发、对流以及辐射热量损失，这些损失会被分别测量。肥胖受试者的热量损失低于对照组，且身体的热绝缘性更高。热量损失的减少可能通过降低寒冷暴露期间维持体温的能量消耗，从而导致他们出现正能量平衡。文中还展示了运动期间热量损失的变化情况。
