anaerobic threshold


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Related to anaerobic threshold: VO2 max

anaerobic threshold

The level above which pyruvate—an intermediate product of anaerobic metabolism—is produced faster than it can be used aerobically. Unused pyruvate splits into lactate (lactic acid) and hydrogen ions; continued exercise above the anaerobic threshold results in accumulation of these ions (acidosis), causing exhaustion and intramuscular pain.

an·aer·o·bic thresh·old

(an'ār-ō'bik thresh'ōld)
Archaic term to describe the onset of blood lactate accumulation estimated by using either ventilatory measures (ventilatory threshold)or blood lactate measures (lactate threshold [q.v.]).

anaerobic threshold

The point at which increased carbon dioxide production and minute ventilation result from increased levels of lactic acid during exercise.
See also: threshold
References in periodicals archive ?
Munzel et al., "Individual anaerobic threshold for evaluation of competitive athletes and patients with left ventricular dysfunction," in Advances in Ergometry, T.
Abbreviations ALS: Amyotrophic Lateral Sclerosis ALSFRS-R: Revised ALS Functional Rating Scale AT: Anaerobic Threshold BWSS: Body Weight Supporting System CPET: Cardiopulmonary exercise testing FVC: Forced vital capacity NIV: Noninvasive ventilation NPO: Nocturnal pulsed oximetry NS: Nonsignificant RFT: Respiratory Function Tests ROM: Range of motion RCP: Respiratory Compensation Point [VO.sub.2]: Oxygen uptake [VO.sub.2pk]: Oxygen uptake at peak effort VT1: First ventilatory threshold VT2: Second ventilatory threshold.
The results showed that the mean of Iranian Elite soccer players' oxygen consumption and maximum percentage of oxygen uptake in anaerobic threshold was 40.57 (ml/kg/min) and 74.25%, respectively.
We found that VE/VC[O.sub.2] slope, V[O.sub.2] peak/kg, and VE/VC[O.sub.2] ratio at anaerobic threshold from the CPET and both distance walked and desaturation from the 6MWT are significantly correlated with survival.
(1) The anaerobic threshold marks the onset of anaerobic metabolism as a result of inadequate oxygen delivery.
He coined the term anaerobic threshold initially based on the changes in the respiratory exchange ratio as a function of workload.
When comparing the maximum rates of anaerobic and aerobic metabolism, anaerobic has a much higher maximum rate and, therefore, glycolysis is depended upon to produce the extra ATP beyond anaerobic threshold. Of course, when AT is reached and the body goes into anaerobic metabolism, the increased lactate causes a shift in pH, which in turn causes the release of CO2 that was stored in buffered HCO3.
They observed that blood lactate concentration only began to increase at a particular point, later described as the 'anaerobic threshold'.
But if you're feeling fresh and cheerful and are looking to shop for bargains - while also pushing your heart rate to its anaerobic threshold - then this might be just the place.
Breath is analysed to show levels of oxygen and carbon dioxide, which in turn reveal your anaerobic threshold and maximum oxygen consumption.
Eleven children with spastic cerebral palsy (CP) who could walk underwent exercise at the anaerobic threshold (AT) point.
This is called the anaerobic threshold. As your body neutralizes lactic acid, carbon dioxide is produced.