Cardiopulmonary Exercise Capacity in Healthy Normals of Different Age
- 1 January 1994
- journal article
- clinical trial
- Published by S. Karger AG in Cardiology
- Vol. 85 (5) , 341-351
- https://doi.org/10.1159/000176733
Abstract
Sixty-nine healthy normals from the 3rd to the 6th decade were stressed to exhaustion by means of a cardiopulmonary exercice test on a bicycle ergometer. Peak VO2, VCO2 and ventilation differed significantly between the four decades: peak VO2 (x ± SD) was 3,393 ± 516; 3,061 ± 444; 2,817 ± 801 and 2,589 ± 687 ml/min (p < 0.001). The mean value for respiratory gas exchange ratio (R) at ventilatory threshold (VT) was 0.86 and for ventilatory equivalent O2 (EqCO2) 0.24. Mean VO2at VTwas 1,662 ± 521; 1,462 ± 308; 1,474 ± 559 and 1,268 ± 232 ml/min (p < 0.05). The VO2 of the four age groups at VT was between 47 and 49% of peak VO2 (n.s.), and both parameters correlated significantly (r = 0.67, p < 0.001). The average increase of VO2 in relation to work rate (ml/W/ min) was 11.5 ± 1.2 for the total exercise and was below VT lower (9.4 ± 1.9) than above VT (12.9 ± 1.2) (p < 0.001).This publication has 0 references indexed in Scilit: