Effect of physical training on corrected QT dispersion in patients with nonischemic heart failure.
BACKGROUND
The effect of physical training (PT) on QTc dispersion and ventricular tachycardia (VT) remains unclear in patients with nonischemic heart failure.


RESULTS
Eight patients with nonischemic heart failure performed PT using a bicycle ergometer and their exercise tolerance increased (4.9+/-1.8 to 7.0+/-2.5 METs, p<0.05) and QTc dispersion decreased (71+/-22 to 48+/-24 ms, p<0.05). However, PT did not change the frequency of VT.


CONCLUSIONS
Physical training could improve QTc dispersion in patients with nonischemic heart failure, possibly by improving the autonomic nerve system.
Nishiyama
Yasuhiro
Y
Division of Cardiology, Kurume University Medical Center, Japan.
Maeda
Hirofumi
H
Tanaka
Masafumi
M
Hirano
Koji
K
Koga
Yoshinori
Y
D000328:Adult; D005080:Exercise Test; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006333:Heart Failure / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010809:Physical Fitness; D011237:Predictive Value of Tests; D017180:Tachycardia, Ventricular / Q000503:physiopathology*