title: Problems of medical supervision and physiological validity encountered with fixed-rate step tests.
authors.forename: Roy J
authors.initials: RJ
authors.lastname: Shephard
mesh_terms: D005080:Exercise Test / Q000009:adverse effects* / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010809:Physical Fitness / Q000502:physiology*