Skip to main content

Research Repository

Advanced Search

The variability of high intensity exercise tests in pre-pubertal boys

Ingle, L.; Tolfrey, K.


K. Tolfrey


The aim of the study was to determine the variability of different performance tests during high intensity exercise in active, untrained pre- and early pubertal boys. Participants were habituated to the Wingate anaerobic test (WAnT), force-velocity test (FVt), standing broad jump (SBJ), vertical jump test (VJT) and 40 m sprint test and repeated these procedures once a week for a period of 6 weeks. 54 active, but untrained, prepubertal boys (mean±SD) (age 12.1±0.3 years, stature 1.55±0.06 m, and body mass 47.9±10.2 kg) were recruited. After Wk2, the variability of short-term power output was low in prepubertal boys, for example, for WAnT-determined peak power (CV%=3.4%; ICC=0.982; mean bias±random error=10±50 W) and this trend was also evident for tests of athletic performance (for example, the 40 m sprint test, CV%=1.3%; ICC=0.990; mean bias±random error=0.01±0.59 s). Variability was reduced further at Wk6 for all high intensity exercise tests. The findings of the current study indicate that tests of short-term power output and athletic performance are reliable from a single measurement given an appropriate period of habituation and strict standardisation of test procedures in pre- and early pubertal boys. © Georg Thieme Verlag KG Stuttgart.


Ingle, L., & Tolfrey, K. (2013). The variability of high intensity exercise tests in pre-pubertal boys. International journal of sports medicine, 34(12), 1063-1069.

Journal Article Type Article
Acceptance Date Oct 8, 2012
Online Publication Date Jul 24, 2013
Publication Date Jul 18, 2013
Deposit Date May 7, 2019
Journal International Journal of Sports Medicine
Print ISSN 0172-4622
Electronic ISSN 1439-3964
Publisher Thieme Open
Peer Reviewed Peer Reviewed
Volume 34
Issue 12
Pages 1063-1069
Public URL
Publisher URL