Relationship between chronotropic incompetence and β-blockers based
on changes in chronotropic response during cardiopulmonary exercise
testing

Takano, Nami; Takano, Haruhito; Fukuda, Taira; Kikuchi,
Hironobu; Oguri, Gaku; Fukumura, Kazuya; Iwasawa, Kuniaki; Nakajima,
Toshiaki. IJC

Heart & Vasculature, March 2015, Vol. 6 Issue: Number 1
p12-18, 7p;

Abstract: Chronotropic incompetence (CI), an attenuated
heart rate (HR) response to exercise, is common in patients with
cardiovascular disease. The aim of this study was to assess changes in
the chronotropic response (CR) during cardiopulmonary exercise testing
(CPET) in patients undergoing cardiac rehabilitation and investigate
the effects of β-blockers.