Quadriceps strengthening. A comparative study of three types of apparatus for strengthening the quadriceps femoris muscle dynamically.
D000328:Adult; D005081:Exercise Therapy / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008297:Male; D009132:Muscles / Q000502:physiology*; D013848:Thigh; D013997:Time Factors