passages.id: split_8_test_188_passage
passages.type: progene_text
passages.text: Male Wistar rats were fed a high - starch diet ( St , 68 % of energy as cornstarch , 12 % corn oil ) for a 2 - wk baseline period and then were randomly assigned to one of four experimental groups : St ( n = 7 ) , high - fat ( HF ; 35 % cornstarch , 45 % corn oil ; n = 8 ) , St with free access to exercise wheels ( StEx ; n = 7 ) , and HF with free access to exercise wheels ( HFEx ; n = 7 ) .