All attendees and faculty members are invited to present their current research using poster or oral presentations.
Please send your abstracts in advance to email@example.com
Deadline abstract submission: June 1st 2022
Acceptance notification: July 1st 2022
There will be a CPXI ‘Young’ Investigator award for the best oral and poster presentation.
Abstracts must conform to the following guidelines. Abstracts that are not in this format will not be reviewed by the Scientific Committee.
- Abstracts must not exceed 350 words
- Abstracts must have the following 4 sections: Background, Methods, Results, and Discussion.
- Abstracts must be in 12 point Arial font (In MS Word format).
Include a cover sheet that includes the primary author’s complete address, telephone number, and email address. Also, please indicate your preference for presentation: Oral or Poster and whether you wish to be considered for CPXI ‘Young’ Investigator award.
The title and author’s names, as well as institution and location must be on the top of the abstract as follows:
Reliability and Validity of the Steep Ramp Test in Children and Adolescents
B.C. Bongers, S.I. de Vries, P.J.M. Helders, T. Takken
Wilhelmina Children’s Hospital, University Medical Center Utrecht
Background: The steep ramp test (SRT) is a feasible, supramaximal exercise test which does not require the use of respiratory gas analysis. Hence, it might contribute to an increase of the utilization of exercise testing in clinical settings. The purpose of this study was to examine reliability and validity of the SRT in healthy children and adolescents. Methods: The total study population (n=75) was randomly divided in a reliability group (n=37, 17 boys; 20 girls, mean±SD age: 13.86±3.22 years) and a validity group (n=38, 17 boys; 21 girls, age: 13.85±3.20 years). Within two weeks, the reliability group performed two SRTs (work rate increments of 10, 15, or 20 W·10 s-1, depending on height), whereas the validity group performed one SRT and one regular cardiopulmonary exercise test (CPET; work rate increments of 10, 15, or 20 W∙min- 1, depending on height) 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. Data were analyzed using the intra class correlation coefficient (ICC), a Bland-Altman plot, linear regression analysis, and Pearson correlation coefficients. Results: Reliability statistics for the SRT showed an ICC of 0.986 for WRpeak. Moreover, WRpeak values attained at the two SRTs correlated highly with each other (r=0.987; 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 the WRpeak achieved at the SRT and the VO2peak attained during the CPET was found (r=0.958; P<0.001). Linear regression analysis provided the following relation between the WRpeak attained at the SRT and the VO2peak achieved during the CPET: VO2peak (mL∙min-1) = (8.262∙WRpeak) + 177.096 (r2=0.917, SEE=237.4). Discussion: The results suggest that the SRT is a reliable and valid exercise test which can predict VO2peak in healthy children and adolescents.