Eiselt, E Longitudinal survey of the laboratory performance and respiratory changes in old people. [electronic resource] - Review of Czechoslovak medicine 1975 - 148-56 p. digital Publication Type: Journal Article ISSN: 0034-6497 Subjects--Topical Terms: AgedAgingHeart--physiologyHumansMaleMiddle AgedOxygen ConsumptionPhysical ExertionRespiratory Physiological Phenomena