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Influence of plasma catecholamines on the lactate threshold during graded exercise

Influence of plasma catecholamines on the lactate threshold during graded exercise S. MAZZEO AND PETER MARSHALL on the lactate Department of Kinesiology, University of Colorado, Boulder, Colorado 60309 MAZZEO, ROBERT S., AND PETER MARSHALL. Influence of plasma on the lactate during graded exercise.J. Appl. Physiol. 67(4): 1319-1322,1989.-This inves- cholamines and lactate production, but the extent of this relationship still remains a question, particularly in humans. tigation examined the relationship among plasma catecholIt was the purpose of this investigation to examine the amines, the blood lactate (TLB), and the ventilatory relationship between plasma lactate concentration dur (TvE) in highly trained endurance athletes. Six competitive cyclists and six varsity cross-country runners per- ing a graded exercise test with plasma catecholamine by using formed a graded exercise test via two different modalities: content. The lactate was manipulated training specificity over two testing modalities. The extreadmill running and *bicycle ergometry. Although maximal oxygen consumption (V02 max ) did not differ significantly for tent to which the lactate shifted in coordinawas determined. the cyclists for treadmill running and cycling (64.6 * 1.0 and tion with plasma 63.5 t 0.4 ml Oz. kg-‘. min-‘, respectively), both Tb and TvE occurred at a relatively earlier work load during the treadmill run. The opposite was true for http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Influence of plasma catecholamines on the lactate threshold during graded exercise

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Publisher
The American Physiological Society
Copyright
Copyright © 1989 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
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Abstract

S. MAZZEO AND PETER MARSHALL on the lactate Department of Kinesiology, University of Colorado, Boulder, Colorado 60309 MAZZEO, ROBERT S., AND PETER MARSHALL. Influence of plasma on the lactate during graded exercise.J. Appl. Physiol. 67(4): 1319-1322,1989.-This inves- cholamines and lactate production, but the extent of this relationship still remains a question, particularly in humans. tigation examined the relationship among plasma catecholIt was the purpose of this investigation to examine the amines, the blood lactate (TLB), and the ventilatory relationship between plasma lactate concentration dur (TvE) in highly trained endurance athletes. Six competitive cyclists and six varsity cross-country runners per- ing a graded exercise test with plasma catecholamine by using formed a graded exercise test via two different modalities: content. The lactate was manipulated training specificity over two testing modalities. The extreadmill running and *bicycle ergometry. Although maximal oxygen consumption (V02 max ) did not differ significantly for tent to which the lactate shifted in coordinawas determined. the cyclists for treadmill running and cycling (64.6 * 1.0 and tion with plasma 63.5 t 0.4 ml Oz. kg-‘. min-‘, respectively), both Tb and TvE occurred at a relatively earlier work load during the treadmill run. The opposite was true for

Journal

Journal of Applied Physiology – The American Physiological Society

Published: Oct 1, 1989

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