Determination of aerobic and anaerobic performance: a methodological consideration.
Summary of "Determination of aerobic and anaerobic performance: a methodological consideration."
This study was designed to compare critical velocity (CV) and anaerobic running capacity (ARC) estimates using the criterion method of four runs with two and three combination bouts to reduce the time and energy demands of the subjects. Twenty-eight men and women (mean ± SD; age = 21.9 ± 3.0 years; stature = 171.7 ± 9.7 cm; body mass = 69.7 ± 13.4 kg) performed an incremental test to exhaustion to determine peak velocity (PV) at maximal oxygen consumption (VO(2)max). Four high-speed runs to exhaustion were conducted on separate days with 110% PV, 90% PV (day 1), 100% PV and 105% PV (day 2). The distances achieved were plotted over the times to exhaustion. Linear regression was used to determine the slopes (CV) and y-intercepts (ARC) using four velocities and the other ten possible velocity combinations. Two runs to exhaustion, at 90% PV and 110% PV, produced similar CV and ARC results to the standard four bouts (ICC = 0.995, SEM = 0.298). Three velocities at 90% PV, 100% PV and 110% PV also resulted in no differences from the criterion method (ICC = 0.999, SEM = 0.075). These results suggest that CV and ARC can be estimated from two velocities, but to ensure a linear relationship, three velocities are recommended.
Affiliation
Metabolic and Body Composition Laboratory, Department of Health and Exercise Science, University of Oklahoma, Huston Huffman Center, 1401 Asp Ave., Norman, OK 73019, USA.
Journal Details
This article was published in the following journal.
Name: Physiological measurement
ISSN: 1361-6579
Pages: 423-431
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21350274
- DOI: http://dx.doi.org/10.1088/0967-3334/32/4/004
Medical and Biotech [MESH] Definitions
Anaerobic Threshold
The oxygen consumption level above which aerobic energy production is supplemented by anaerobic mechanisms during exercise, resulting in a sustained increase in lactate concentration and metabolic acidosis. The anaerobic threshold is affected by factors that modify oxygen delivery to the tissues; it is low in patients with heart disease. Methods of measurement include direct measure of lactate concentration, direct measurement of bicarbonate concentration, and gas exchange measurements.
Sulfolobaceae
A family of SULFOLOBALES consisting of aerobic or facultatively anaerobic chemolithotrophic cocci, usually occurring singly. They grow best at a pH of about 2.
Cellulomonas
A genus of aerobic or facultatively anaerobic BACTERIA, in the family Cellulomonadaceae. It is found in the SOIL and capable of hydrolyzing CELLULOSE.
Practice (psychology)
Performance of an act one or more times, with a view to its fixation or improvement; any performance of an act or behavior that leads to learning.
Pyrobaculum
A genus of rod-shaped, almost rectangular ARCHAEA, in the family THERMOPROTEACEAE. Organisms are facultatively aerobic or strictly anaerobic, grow on various organic substrates, and are found in continental solfataras.
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