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Identification of the anaerobic threshold using double product in patients with coronary artery disease
P H Brubaker1, A Kiyonaga, B A Matrazzo
1Cardiac Rehabilitation Program, Department of Medicine, Wake Forest University, Winston-Salem, North Carolina 27109, USA.
The American Journal of Cardiology
|February 1, 1997
Abstract:
This study compared the ventilatory threshold with the double-product break point in 104 patients with cardiovascular disease during ramp treadmill testing. The high correlation (r = 0.81) between the double-product break point and the ventilatory threshold, even in patients taking beta blockers, suggests the former method is a viable noninvasive alternative for identifying the anaerobic threshold in patients with cardiovascular disease, particularly when expired gas analysis is not appropriate or available.