Skip Navigation LinksHome > May 2004 - Volume 18 - Issue 2 > INFLUENCE OF FAMILIARIZATION ON THE RELIABILITY OF VERTICAL...
Journal of Strength & Conditioning Research:
ORIGINAL RESEARCH: PDF Only

INFLUENCE OF FAMILIARIZATION ON THE RELIABILITY OF VERTICAL JUMP AND ACCELERATION SPRINTING PERFORMANCE IN PHYSICALLY ACTIVE MEN.

MOIR, GAVIN; BUTTON, CHRIS; GLAISTER, MARK; STONE, MICHAEL H.

Collapse Box

Abstract

The purpose of the present study was to determine the number of familiarization sessions required to obtain an accurate measure of reliability associated with loaded vertical jump and 20-m sprint running performance. Ten physically active men attended 5 separate testing sessions over a 3-week period where they performed unloaded and loaded (10-kg extra load) countermovement (CMJ) and static (SJ) jumps, followed by straight-line 20-m sprints. Jump height was recorded for the vertical jumps using a jump mat, while the time for 10 m and 20 m was recorded during the sprints using photocells. The highest (jump conditions) and fastest (sprint) of 3 trials performed during each of the 5 testing sessions was used in the subsequent analysis. Familiarization was assessed using the scores obtained during the 5 separate testing sessions. Reliability was assessed by calculating intra-class correlation coefficients (ICCs) and coefficient of variation (CV). No significant differences were obtained between the testing sessions for any of the measures. ICCs ranged from 0.89 to 0.95, while CVs ranged from 1.9 to 2.6%. These results indicate that high levels of reliability can be achieved without the need for familiarization sessions when using loaded and unloaded CMJ and SJ and 20-m sprint performance with physically active men.

(C) 2004 National Strength and Conditioning Association

 

Login

Article Tools

Share

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.