目的：为进一步验证增加膳食脂肪供应量提高机体耐寒力的效果。方法：选寒区部队刚入伍新兵５４ 人。设普食对照组２５ 人，脂肪生热比为２５ ％ 左右；高脂膳实验组２９ 人，脂肪生热比为３０ ％ 左右。用标准称重法膳食调查计算脂肪生热比。在相同气侯条件、相同训练强度分别食两种膳食２３ ｄ 。测定实验前、后新兵耐寒力水平和脂代谢状况。结果：①实验前血管寒冷反应指数（ＶＲＣＩ）７３ ．５ ％为弱反应；着冬装在－ ７ ～－ ９ ℃冷环境静坐４ ｈ，肛温下降０ ．７９ ～０ ．９５ ℃，两组无显著性差异。②实验２３ ｄ 后，ＶＲＣＩ两组均未提高，反而下降，但实验组下降程度明显小于对照组，实验组４ ｈ 冷暴露肛温下降０ ．６３ ±０．１６ ℃，显著小于其对照组０ ．８３ ±０ ．２０ ℃（ Ｐ＜ ０ ．０１） 。③甘油三酯，总胆固醇均在正常值范围。结论：本次结果和１９９３ 年部队验证均表明提高膳食脂肪生热比到３０ ％ ～３５ ％ ，短期食用可明显提高战士耐寒力，脂肪生热比３０ ％ 为军队营养标准的上限是可行的。用肛温与ＶＲＣＩ共同评价耐寒力较单用ＶＲＣＩ更灵敏 OBJECTIVE: To further verify the effect of increasing dietary fat supply and improving the cold tolerance of the body. Methods: Cold area army just recruits 54 recruits. The normal diet control group 25 people, fat heat ratio was about 25%; high fat diet experimental group of 29 people, fat heat ratio was about 30%. Fat calories were calculated using a standard weight dietary survey. In the same climatic conditions, the same training intensity of eating two kinds of diet for 23 d. Before and after the experiment, the levels of cold resistance and lipid metabolism of recruits were measured. Results: ① Vascular cold reaction index (VRCI) before experiment. 5% for the weak reaction; winter at - 7 ~ - 9 ℃ cold environment sit 4 h, rectal temperature decreased 0. 79 ~ 0. 95 ℃, no significant difference between the two groups. ② After 23 days of the experiment, VRCI did not increase in both groups, but decreased in the experimental group, but the degree of decline in the experimental group was obviously less than that in the control group. 63 ± 0.16 ℃, significantly less than the control group 0. 83 ± 0. 20 ° C (P <0 .01). ③ triglyceride, total cholesterol in the normal range. Conclusion: This result and the force verification in 1993 both showed that raising the dietary fat heat gain ratio to 30% -35%, short-term consumption can obviously improve the cold resistance of the soldiers, and the fat heat-generating ratio of 30% is feasible for the upper limit of the army nutrition standard. Rectal temperature and VRCI together evaluate the cold resistance is more sensitive than single VRCI