Identification of the anaerobic threshold using double product in patients with coronary artery disease.
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.
Brubaker
P H
PH
Cardiac Rehabilitation Program, Department of Medicine, Wake Forest University, Winston-Salem, North Carolina 27109, USA.
Kiyonaga
A
A
Matrazzo
B A
BA
Pollock
W E
WE
Shindo
M
M
Miller
H S
HS
Tanaka
H
H
D000319:Adrenergic beta-Antagonists / Q000494:pharmacology; D000368:Aged; D015308:Anaerobic Threshold; D002245:Carbon Dioxide / Q000097:blood*; D003327:Coronary Disease / Q000097:blood* / Q000378:metabolism / Q000503:physiopathology; D005080:Exercise Test; D005260:Female; D006801:Humans; D019344:Lactic Acid / Q000097:blood*; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D012119:Respiration / Q000187:drug effects
D000319:Adrenergic beta-Antagonists; D002245:Carbon Dioxide; D019344:Lactic Acid