#leg_exercise__legexercise  exercise designed to strengthen the leg muscles
  supertype:  #physical_exercise__exercise__exercising__physical_exertion__workout  the activity of exerting your muscles in various ways to keep fit; "the doctor recommended regular exercise"; "he did some exercising"; "the physical exertion required by his work kept him fit"
  subtype:  #squat__squatting  exercising by repeatedly assuming a squatting position; strengthens the leg muscles
  subtype:  #leg_curl__legcurl__leg_curling__legcurling  an exercise designed to strength the flexor muscles of the leg
  subtype:  #leg_extensor__legextensor  an exercise designed to strengthen the extensor muscles of the leg

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