Summary
In a group of seven men the increase of the pulse rate at the onset of standard exercise on a bicycle ergometer and the drop during recovery were assessed, during the control period and after 60 h fasting. Analysis into a rapid (vagus, central) component of the pulse increment and a slow (peripheral, sympathetic) component was made and their velocity constants were obtained. Fasting lead to a rise of the pulse increment and an increase of the sympathetic component at the expense of the component of vagus inhibition. These results confirm that acute fasting leads to a drop of physical performance, as under normal conditions analogous changes are caused by more intense exercise.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Åstrand, P. O.: Experimental studies of physiological working capacity in relation to sex and age. Kopenhagen: Munksgaard 1952.
—, andI. Ryhming: A monogram for calculation of aerobic capacity (physical fitness) from pulse rate during submaximal work. J. appl. Physiol.7, 218 (1954).
Best, Ch. H., andN. B. Taylor: The physiological basis of medical practice, 6th edition. London: Bailliére, Tindal & Cox 1955.
Brodan, V., andE. Kuhn: A contribution to the analysis of the pulse rate during a load and recovery. Physiol. bohemoslov.15, 68 (1966).
— —: Effect of sixty hours of complete fasting on the physical efficiency of healthy men. I. Differences in the investigated parameters at rest and during a steady state. Rev. Czech. Med.12, 155 (1966).
—,I. Marek, andE. Kuhn: A mathematical evaluation of oxygen consumption during physical exercise and recovery. Physiol. bohemoslov.14, 201 (1965).
Buchanan, E.: Trans. Oxford Univ. Scient. Club34, 351 (1909);Best andTaylor 1955.
Consolazio, C. F., L. O. Matoush, H. L. Johnson, R. A. Nelson, andH. J. Krzywicki: Metabolic aspects of acute starvation in normal humans (10 days). Amer. J. clin. Nutr.20, 672 (1967).
Craig, F. N., andE. G. Cummings: Slowing of the heart at the beginning of exercise. J. appl. Physiol.18, 353 (1963).
Dejours, P., C. L. Raynaud, L. Cuénod etY. Labrousse: Modifications instantannées de la ventilation au début et à l'arret de l'exercise musculaire. Interprétation. J. Physiol. (Paris)47, 155 (1955).
Margaria, R., H. T. Edwards, andD. B. Dill: Possible mechanisms of contracting and paying oxygen debt and role of lactic acid in muscular contraction. Amer. J. Physiol.106, 689 (1933).
Verdank, G., R.Paunier, and J.Joessens: Rapports et communications 5èmes Journées Européennes de Diététique. Bruxelles 26.–29. 9. 1959.
Wilder, J.: Adrenalin and the law of initial value. Exp. Med. Surg.15, 47 (1957).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Brodan, V., Kuhn, E. Analysis of changes in the pulse rate during exercise and recovery after sixty hours of complete fasting. Int. Z. Angew. Physiol. Einschl. Arbeitsphysiol. 27, 25–33 (1969). https://doi.org/10.1007/BF00695015
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00695015