摘要
本研究采用氮平衡和营养调查方法对热区部队混合膳食、从事中等强度劳动战士蛋白质需要量进行了探讨。氮平衡试验结果显示，当蛋白质摄入量为１．２６ｇ·ｋｇ（－１）·ｄ（－ １）时，可维持受试者零，点氮平衡，若加上维持氮平衡的平均摄入量的２个标准差作为安全系数，则蛋白质需要量为１．４８ｇ·ｋｇ（－１）·ｄ（－１）。营养调查结果显示，膳食蛋白质水平低子８０．５９（１．４６ｇ·ｋｇ（－１）·ｄ（－１））时，血红蛋白、血清总蛋白、白蛋白和前白蛋白以及免疫球蛋白（ＩｇＡ、ＩｇＧ、ＩｇＭ）在正常范围的下限或低于正常水平；当膳食蛋白质水平在８０．５～８９．３ｇ（１．４６～１．６２ｇ·ｋｇ（－１）·ｄ（－１））时，血液蛋白质和免疫球蛋白水平显著升高，维持在正常范围的较高水平，提示胳食适宜的蛋白质摄入量应为８０．５～８９．３ｇ，平均８４．９９（１．５４ｇ·ｋｇ（－１）·ｄ（－１）），略高于氮平衡试验的结果。由此，建议热区部队适宜的蛋白质需要量定为１．５９·ｋｇ（－１）·ｄ（－１）。
rotein requirements for armylnen performing moderate physical activities,on a mixed diet in tropical regions were studied with the methods of nitr-ogen balance and nutritional survey.The results obtained from nitrogen ba-lance indicated that the mean protein requirement of the sybjects based on the linear regression analysis of nitrogen balance response of individuals was 1.26 ± 0.11g protein·kg(-1)·d(-1).If 97.5%is to be covered,the safe levelof protein intake should be 1,48g protein·kg(-1)·d(-1).The results obtained from nutritional survey showed that the contents of hemoglobin,serum alb-umin,total protein and prealbumin and immune serum globulin (IgA,IgG,IgM)were at the lower limits in normal ranges,of which some was below normal values, when protein intake was lower than values of 80.5g·d(-1). Ifprotein intake was s 80·5～89. 3g·d(-1),the contents of blood proteins and im- mune serum globulin were significantiy increased and were at the higherlevels in normal ranges, which indicated that appropriate protein intakeshould be 80.5～89·3g·d(-1)(mean 84.9g,1.54g·kg(-1)·d(-1).The value was similarto t he result obtained from nitrogen balance experiment. On the basis ofabove results we suggest that protein requirement for armynlen in tropicalregions should be 1.5g·kg(-1)·d(-1)
出处
《解放军预防医学杂志》
CAS
北大核心
1996年第2期83-87,共5页
Journal of Preventive Medicine of Chinese People's Liberation Army
基金
总后"八五"重点课题
关键词
蛋白质需要量
热区
士兵
氮平衡
protein requirements, armymen in tropical regions,nitiogen halance,nutritional survey
