Document Detail

The Steep Ramp Test in Healthy Children and Adolescents: Reliability and Validity.
MedLine Citation:
PMID:  22903141     Owner:  NLM     Status:  Publisher    
PURPOSE: To examine the reliability and validity of the steep ramp test (SRT), a feasible, maximal exercise test on a cycle ergometer which does not require the use of respiratory gas analysis, in healthy children and adolescents. Methods: Seventy-five children were randomly divided in a reliability group (n=37, 17 boys; 20 girls, mean±SD age: 13.86±3.22 years) that performed two SRTs within two weeks and a validity group (n=38, 17 boys; 21 girls, age: 13.85±3.20 years) that performed both a SRT and a regular cardiopulmonary exercise test (CPET) with respiratory gas analysis within two weeks. Peak work rate (WRpeak) was the main outcome of the SRT. Peak oxygen uptake (VO2peak) was the main outcome of the CPET. Reliability was examined with the intra class correlation coefficient (ICC) and a Bland and Altman plot, whereas validity was assessed using Pearson's correlation coefficients, and stepwise linear regression analysis. RESULTS: Reliability statistics for the WRpeak values attained at the two SRTs showed an ICC of 0.986 (P<0.001). The average difference between the two SRTs was -6.4 W, with limits of agreement between +24.5 W and -37.5 W. A high correlation between WRpeak attained at the SRT and the VO2peak achieved during the CPET was found (r=0.958; P<0.001). Stepwise linear regression analysis provided the following prediction equation: VO2peak (mL·min) = (8.262·WRpeak SRT) + 177.096 (R=0.917, SEE=237.4). Conclusion: The results suggest that the SRT is a reliable and valid exercise test in healthy children and adolescents, which can be used to predict VO2peak.
Bart C Bongers; Sanne I de Vries; Paul J M Helders; Tim Takken
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-16
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  -     ISSN:  1530-0315     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
1Child Development & Exercise Center, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands; 2TNO Expertise Center Lifestyle, Leiden, the Netherlands.
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