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Lactate accumulation relative to the anaerobic and respiratory compensation thresholds

Lactate accumulation relative to the anaerobic and respiratory compensation thresholds JOSHUA SIMON, JEFFREY L. YOUNG, BERNARD DAVID K. BLOOD, AND ROBERT B. CASE Applied Physiology Laboratory, Teachers College, Columbia University, New York 10027; and Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York 10032 L. YOUNG, BERNARD GUTIN, B. CASE. Lactate accumulation relative to the anaerobic and respiratwy compensation threshoLds, J. Appl, Physiol.: Respirat. Environ. Exercise Physiol. M(1): 13-17, 1983.--Anaerobic thresholds of five male subjects were determined invasively (AT;), from a marked increase in plasma lactate above resting levels (ALa), and noninvasively (AT,), from a nonlinear increase in minute ventilation (VE) during incremental work (IW) leg cycling tests; work rate was increased 30 W every 2 min. Each subject also performed four constant-load work (CLW) tasks just above and just below their AT, and respiratory compensation threshold (RCT), i.e., the point expressed as 02 consumption (VO,) or work rate, at which VE increases disproportionally to CO2 output during IW. In four of the five subjects the AT, preceded the ATi during IW. Yet the AT, delineated the CLW in which marked lactate accumulation did or did not occur. During CLW just above the AT, in these same four subjects, VE/~Z and fractional expired http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Lactate accumulation relative to the anaerobic and respiratory compensation thresholds

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Publisher
The American Physiological Society
Copyright
Copyright © 1983 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
Publisher site
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Abstract

JOSHUA SIMON, JEFFREY L. YOUNG, BERNARD DAVID K. BLOOD, AND ROBERT B. CASE Applied Physiology Laboratory, Teachers College, Columbia University, New York 10027; and Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York 10032 L. YOUNG, BERNARD GUTIN, B. CASE. Lactate accumulation relative to the anaerobic and respiratwy compensation threshoLds, J. Appl, Physiol.: Respirat. Environ. Exercise Physiol. M(1): 13-17, 1983.--Anaerobic thresholds of five male subjects were determined invasively (AT;), from a marked increase in plasma lactate above resting levels (ALa), and noninvasively (AT,), from a nonlinear increase in minute ventilation (VE) during incremental work (IW) leg cycling tests; work rate was increased 30 W every 2 min. Each subject also performed four constant-load work (CLW) tasks just above and just below their AT, and respiratory compensation threshold (RCT), i.e., the point expressed as 02 consumption (VO,) or work rate, at which VE increases disproportionally to CO2 output during IW. In four of the five subjects the AT, preceded the ATi during IW. Yet the AT, delineated the CLW in which marked lactate accumulation did or did not occur. During CLW just above the AT, in these same four subjects, VE/~Z and fractional expired

Journal

Journal of Applied Physiology – The American Physiological Society

Published: Jan 1, 1983

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