Muscle CSA, force production, and activation of leg extensors during isometric and dynamic actions in middle-aged and elderly men and women. - Häkkinen,K.; Alen,M.; Kallinen,M.; Izquierdo,M.; Jokelainen,K.; Lassila,H.; Mälkiä,E.; Kraemer,W.J.; Newton,R.U. (J Aging Phys Act, 1998)