one secretion distinguish acromegalic from normal pulsatile growth hormone release. J. Clin. Invest. 94:1277-1288. Hausdorff, J.M., Cudkowicz, M.E., Firtion, R., Wei, J.Y., Goldberger, A.L. (1998) Gait variability and basal gangia disorders: stride-to-stride variations in gait cycle timing in Parkinson’s