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. 1985 Jul;54(1):96–99. doi: 10.1136/hrt.54.1.96

Effect of beta1 selective adrenoceptor blockade on physiological response to exercise.

N F Gordon, J P van Rensburg, H M Russell, D L Kawalsky, C P Celliers, J F Cilliers, D P Myburgh
PMCID: PMC481856  PMID: 3925972

Abstract

The effect of the beta1 selective adrenoceptor blocker, atenolol, on the physiological response to exercise was studied in 12 healthy young men. Oral atenolol (100 mg) and placebo were administered in a randomised double blind crossover fashion an hour and a half before an intermittent multistage cycle ergometer exercise test. At maximal effort oxygen consumption, pulmonary ventilation, carbon dioxide output, and respiratory exchange ratio were not modified by atenolol. In contrast, maximal heart rate and performance time were significantly reduced after atenolol. Nevertheless, because the relation of percentage of maximal oxygen consumption to percentage of maximal heart rate was not changed by atenolol both the absolute and relative oxygen consumption corresponding to 70% and 85% of the maximal heart rate remained unaltered. These data suggest that recommendations of exercise intensity may be determined on the basis of a calculated percentage of the predetermined maximal heart rate in persons without symptomatic coronary heart disease receiving beta1 selective adrenoceptor blockers.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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