Eighty-three Asian , term neonates ( mean SD birth weight : @ @ kg ; gestational age : @ @ wk ) were studied at a postnatal age of @ @ d. Mean requirements for isoleucine , leucine , and valine ( measured in boys only ) were @ mg kg ( -@ ) d ( -@ ) ( r ( @ ) = @ , P < @ ) , @ mg kg ( -@ ) d ( -@ ) ( r ( @ ) = @ , P < @ ) , and @ mg kg ( -@ ) d ( -@ ) ( r ( @ ) = @ , P = @ ) , respectively .