Document Detail


A simple method for individual anaerobic threshold as predictor of max lactate steady state.
MedLine Citation:
PMID:  11039656     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The individual anaerobic threshold (IAT) is defined (18) as the highest metabolic rate where blood lactate (La) concentrations are maintained at a steady-state during prolonged exercise. Stegmann et al.'s (18) method to detect IAT, using La-performance relationship during incremental graded exercise, is based on the assumption that La is in relatively steady state by the end of each 3-min stage of work rate. However, at the end of a 3-min stage, an La steady state (Lass) is not reached (13). PURPOSE: The present study was designed to investigate whether the IAT should be determined by attributing La value to the antecedent stage (IATa) or to the same stage of its measurement (IATm), then to verify whether this IAT would be a valid indicator of the max Lass during prolonged exercise. METHODS: Forty-one athletes (21 male and 20 female), regularly involved in different physical training, performed three exercise tests on treadmill. The first one was a 3-min stage incremental test to detect the IATa and IATm. The other two tests were 30-min prolonged tests at the IATa and IATm workload. Lass were present in IATa intensity (about 4.0 mmol x L(-1)) both in male and female athletes, whereas at IATm intensity a Lass was not present and a premature break-off occurred in some cases. DISCUSSION: This protocol can be useful for practical use because: 1) the method of choosing the anaerobic threshold is easy to apply; 2) it does not require to reach the maximal effort; and 3) although in some cases the IATa could probably underestimate the workload of max Lass, the IATa can be regarded as guideline to define the intensity of endurance training.
Authors:
C Baldari; L Guidetti
Related Documents :
15045166 - Hmr1402, a potassium atp channel blocker during hyperdynamic porcine endotoxemia: effec...
10545046 - The relationship of plasma catecholamine and lactate during anaerobic threshold exercis...
18550986 - Lactate and rate of perceived exertion responses of athletes training for and competing...
23104696 - Heart failure with preserved ejection fraction: chronic low-intensity interval exercise...
12663356 - Effects of electrical stimulation on vo2 kinetics and delta efficiency in healthy young...
10444436 - Acute exercise increases nitric oxide synthase activity in skeletal muscle.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  32     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2001-01-17     Completed Date:  2001-02-08     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1798-802     Citation Subset:  IM; S    
Affiliation:
University Institute of Motor Sciences, Rome, Italy. la.guidetti@confor.it
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Anaerobic Threshold*
Exercise Test
Exercise Tolerance*
Female
Humans
Lactic Acid / blood*
Male
Predictive Value of Tests
Sports
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Comparison of Actiwatch activity monitor and Children's Activity Rating Scale in children.
Next Document:  FT-IR spectroscopy utilization to sportsmen fatigability evaluation and control.