[Effect of a new tube-feeding formula on metabolism, urinary electrolytes and gastrointestinal tract of healthy adults with and without a supplement of ballast material from soy bran].

Over a period of three weeks eight apparently healthy subjects received a new formula diet. From the second week on 30 grams of dietary fibers were administrated. This dietary fiber was produced from soya-bran and the eight subjects accepted this diet very well. No change of blood chemistry was measured. The stool weight without this dietary fiber amounted to 57 +/- + 15 g/day, where as by giving the fibre stoolweight rose up to 86 + 4 g/day. Transit time without fiber was 83 +/- 29 h and with fiber it dropped to 74 +/- 11 h (n.s.). The renal excretion of potassium, sodium, magnesium and calcium remained constant.