Cardiac arrhythmias and submaximal exercise test
Vlaicu, R.; Olinic, N.; Rentsch, S.; Zhu, H.B.; Vlăduţiu, T.
Medecine Interne 18(3): 279-286
1980
ISSN/ISBN: 0377-1202 PMID: 7414239 Document Number: 164748
Cardiac arrhythmias, investigated in 1000 persons subjected to a submaximal exercise test, showed an incidence of 6%. The most frequent were ventricular premature beats, related in more than half of the cases to an organic, probably ischemic, heart disease. Left bundle branch block and ventricular tachycardia were rare and indicated an organic heart disease. Several other rare arrhythmias are discussed. In patients with exercise-induced cardiac arrhythmias, an increased ratio of the tension-time index to maximal O2 consumption indicates an uneconomical and less efficient cardiac work. The increase of the PEP ratio during recovery in the subjects exhibiting exercise-induced ventricular premature beats suggests a lowered cardiac efficiency. Cardiac arrhythmias frequently coexist with an organic, especially ischemic, heart disease.