Studies on handgrip test; H. Effect of aging on cardiovascular responses. Tan Watanabe*, Long-Tai Fu*, Chihoko Togo*, Kazuzo Kato* and Shintaro Koyama*. The Cardiovascular Insttiute. Key words Heart Cardiac rate index Blood pressure Vascular resistance
1294
Isometric exercise and the cardiovascular 2) Petrofsky, J. S. and Lind, A.R.: Aging, isometric strength and endurance, and cardiovascular responses to static effort. J. Appl. Physiol., 38:91, 1975. 3) Asmussen, E. and Hansen, E. : Ueber den Einfluss statischer Muskelarbeit auf Atmung and Kreislauf. Skand. Arch. Physiol., 78:282, 1938. 4) Tuttle, W. W. and Horvath, S.M. : Comparison of effects of static and dynamic work on blood pressure and heart rate. J. Appl. Physiol., 10:294, 1957. 5) Lind, A.R., Taylor, S. H., Humphreys, P.W., Kennely, B. M. and Donald, K.W. : The circulatory effects of sustained voluntary muscle contraction. Clin. Sci, 27:229, 1964. 6) Amery, A., Julius, S., Whitlock, L. S. and Conway, J. :Influence of hypertension on the hemodynamic response to exercise. Circluation, 36:231, 1967. 7) Nutter, D.O., Schlant, R.C. and Hurst, J.W. : Modern. Conc. Cardiovasc, Dis., 41:11, 1972. system. 8) Muller, E.A. :Die physische Ermildung. Handb. Ges. Arbeitsmed., 1:405, 1961. 9) Brandfonbrener, M., Landowne, M. and Shock, N. W. : Changes in cardiac output with age. Circulation, 12:557, 1955. 10) Brotmacher, L. and Fleming, P.: Cardiac output and vascular pressures in 10 normal children adolescents. Guy's. Hosp. Rep., 106:268, 1957. 11) Guyton, A. G. : Circulatory physiology : Cardiac initiation of muscle contraction. Acta Physiol. Scand., 342 (Suppl. ) :1, 1970. 14) Rohmert, W. : Recht links Vergliech bei isometrischem Armmuskeltraining mit verschiedenem Train- ingsreiz bei achtjahrigen Kindern. Intern. Z. Angew. and Output and Its Regulation, Philadelphia and London, W. B. Saunders, 1963, p. 9. 13) Freyschuss, U. : Cardiovascular adjustment to somatomotor activation: Elicitation of increments in heart rate, aortic pressure and venomotor tone with the Physiol., 26:363, 1968.
1299 15) Hansen, J.W. : Effect of dynamic training on isometric endurance of the elbow flexors. Intern. Z. Angew. Physiol., 23:367, 1967. 16) Lind, A. R. and McNicol, G.W. : Local and central circulatory responses to sustained contractions and the effect of free or restricted arterial inflow on post-exercise hyperaemia. J. Physiol., 192:575, 1967. 17) Lakatta, E.G., Gerstenblith, G., Angell, C.S., Shock, N. W. and Weisfeldt, M.L. : Prolonged contraction duration in aged myocardium. J. Clin. Invest., 55:61, 1975. 18) Lakatta, E.G., Gerstenblith, G., Angell, C.S., Shock, N. W. and Weisfeldt, M.L. : Diminished inotropic response of aged myocardium to catecholamines. Circulation Res., 36:262, 1975. 19) Quarry, V. M. and Spodick, D.H. : Cardiac responses to isometric exercise. Comparative effects with different postures and levels of exertion. Circulation, 49:905, 1974. 20) Grossman, W.G., McLaurin, L. P. Saltz, S.B., Paraskos, J.A., Dalen, J. E. and Dexter, L. : Changes in the inotropic state of the left ventricle during isometric exercise. Brit. Heart J., 35:697, 1973. 21) Lind, A.R., Taylor, S.H., Humphreys, P.W., Kenelly, B. M. and Donald, K.W. : Circulatory effects of sustained voluntary muscle contractions. Clin. Sci, 27:229, 1964.