A step-type training machine in which the exerciser trains using a predetermined load while detecting the pulse of the exerciser, and in accordance with data (e.g. the age, sex and weight) inputted before the training and various data (e.g. the exerciser's pulse) during the training, the step load is varied and controlled during the training so as to impart the optimum exercise load to the exerciser. The machine includes a frame; a plate for mounting various parts at a lower portion of the frame; a pair of crankarms each pivotally mounted by a pivot shaft on the plate and having a step member mounted on its one end movable up and down through a predetermined angle; an eddy current load device rotated by the swinging movement of the pair of crankarms; an input device for inputting individual data of the exerciser; a mechanism for measuring the pulse value of the exerciser; a detector for detecting the rotation frequency of the load device; a processor for extracting a control signal; and a display for displaying predetermined date extracted by the processing means.