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ERIC Number: EJ829338
Record Type: Journal
Publication Date: 2006-Sep
Pages: 10
Abstractor: As Provided
Reference Count: 21
ISSN: ISSN-1091-367X
Reliability of a Unilateral Horizontal Leg Power Test to Assess Stretch Load Tolerance
Simpson, Rhianna Parker; Cronin, John
Measurement in Physical Education and Exercise Science, v10 n3 p169-178 Sep 2006
Drop jumping has previously been used to measure fast stretch shorten cycle (SSC) ability and stretch load tolerance. To the knowledge of these authors a test does not exist to achieve this in the horizontal direction. The purpose of this study therefore was to estimate the reliability of a new unilateral horizontal leg power test to assess these qualities. Participants (N = 10) performed three jumps on each leg from distances of 80%, 120%, and 160% of leg length onto a force plate, followed immediately by a jump for maximal distance onto a synthetic track. No significant between-leg differences (p greater than 0.05) were found for the dependent variables of ground contact time (GCT), peak propulsive vertical ground reaction force, peak propulsive horizontal ground reaction force, and distances jumped (DJ). Within-trial variability (coefficients of variation) ranged from 3.6% to 10.9%, and test-retest reliability intraclass correlation coefficients from 0.80 to 0.95. GCT and DJ were the variables with highest reliability between trials and days. These two variables should be used to indicate fast SSC (GCT) ability and stretch load tolerance (DJ-GCT) in the horizontal direction. The relationship of these measures to functional performance needs to be established. (Contains 2 figures and 1 table.)
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A