title: Endurance training: the effects of intensity, total work, duration and initial fitness.
mesh_terms: D000328:Adult; D006339:Heart Rate; D006801:Humans; D007773:Lactates / Q000097:blood; D008297:Male; D010101:Oxygen Consumption; D010806:Physical Education and Training; D010809:Physical Fitness; D013997:Time Factors
chemical_list: D007773:Lactates