Document Detail

Cardiorespiratory fitness and functional capacity assessed by the 20-meter shuttle walking test in patients with coronary artery disease.
MedLine Citation:
PMID:  12881826     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To validate the 20-meter shuttle walking test (20MST) in the assessment of maximal oxygen consumption (VO(2)max) and maximal speed in patients with coronary artery disease (CAD).
DESIGN: Single-sample validity study.
SETTING: Cardiac rehabilitation service in France.
PARTICIPANTS: Seventeen men with CAD.
INTERVENTIONS: Subjects underwent a symptom-limited treadmill test (SLTT) in a laboratory, with a speed starting at 2.5km/h and increasing by 0.5km/h every minute, and performed an adapted 20MST in a corridor, with a speed starting at 3km/h and increasing by 1km/h every minute until exhaustion.
MAIN OUTCOME MEASURES: VO(2) measured during the 20MST with the Cosmed K2 telemetric gas analyzer (K2 VO(2)), estimated VO(2) calculated by the Léger equation (Léger VO(2)) from the maximal speed obtained during the 20MST, and VO(2) measured during the SLTT (SLTT VO(2)). Maximal speeds attained on the treadmill and on the 20MST were also compared.
RESULTS: A significant (P<.0001) difference was observed between the Léger estimate of VO(2) and those of K2 VO(2) and SLTT VO(2) (mean +/- standard deviation, 12.28+/-5.90mL. min(-1).kg(-1) vs 23.04+/-7.17 and 22.56+/-6.29mL.min(-1).kg(-1)). No difference was found between the treadmill and the 20MST maximal speeds (6.73+/-0.91km/h, 6.78+/-1.23km/h, respectively). Measured with the Cosmed K2, a significant relationship existed between VO(2) and each speed level (r=.95, P<.0001; VO(2)=4.24x speed-7.37, standard estimation error=2.29mL.min(-1).kg(-1)).
CONCLUSION: Maximal VO(2) and maximal speed measured on the treadmill did not differ significantly from those obtained on the 20MST. The current 20MST equation (Léger equation) was not valid to estimate VO(2) in CAD patients. A modified prediction equation of VO(2) was given and would need a larger number of patients to be generalized.
Mathieu Gayda; Dominique Choquet; Abdou Temfemo; Saïd Ahmaïdi
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Publication Detail:
Type:  Journal Article; Validation Studies    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  84     ISSN:  0003-9993     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2003-07-25     Completed Date:  2003-08-12     Revised Date:  2014-07-28    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1012-6     Citation Subset:  AIM; IM    
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MeSH Terms
Activities of Daily Living*
Analysis of Variance
Breath Tests*
Coronary Artery Disease / diagnosis*,  metabolism*,  physiopathology
Exercise Test / methods*,  standards
Exercise Tolerance
Middle Aged
Oxygen Consumption*
Physical Fitness*
Predictive Value of Tests
Radionuclide Ventriculography
Regression Analysis
Stroke Volume
Time Factors

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

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