1. From the Hypertension Unit (M.-C.I., J.P., K.F., E.D.M., F.C.-C.), Heart Institute (InCor), University of Sao Paulo Medical School, Sao Paulo; the Laboratory of Cardiovascular Physiology (M.-C.I., M.B., A.B.-K.), Department of Physiology, Basic and Health Science Institute, Federal University of Rio Grande do Sul, Porto Alegre; and the Human Movement Laboratory (L.J.F.F., K.D.A.), Sao Judas Tadeu University, Sao Paulo, Brazil.