Training methodology changed as a result of alterations in javelin construction .
Training methodology so did the assumptions regarding throwing trajectory , javelin flight , angle of release , initial velocity and air resistance ( 3 , 4 , 5 , 18 , 19 , 20 , 21 ) .
Training methodology changed as a result of alterations in javelin construction and so did the assumptions regarding throwing trajectory , javelin flight , angle of release , initial velocity and air resistance ( 3 , 4 , 5 , 18 , 19 , 20 , 21 ) .