The effect of hand-held weights on vertical take-off velocity during a countermovement jump
Date
2002-10
Authors
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Publisher
ORCID
Type
Degree Level
Masters
Abstract
The primary purpose of this study was to determine the effect that 2 lb and 5 lb
hand-held weights had on vertical jump performance as assessed by vertical takeoff
velocity. Secondary analyses were conducted to provide additional insight
into the observed results. Thirty-one male athletes performed three
countermovement jumps (CMJ) with an arm-swing under three different treatment
conditions: holding a 2lb hand weight in each hand (CMJ2), holding a 5lb
weight in each hand (CMJ5), and without holding onto any weight (CMJ0). All
jumps were performed on a forceplate, which permitted the calculation of vertical
take-off velocity (vto), average force during the upward jump phase (avgforceup)
and the duration of the upward jump phase (timeup). A repeated measures
ANOVA was used to test for significant differences between the three treatment
conditions for both the primary and secondary analyses. The primary analysis
indicated that CMJ2 and CMJ5 exhibited significantly greater take-off velocities
and thus, jump heights, than CMJ0. However, CMJ2 and CMJ5 were not
significantly different from each other (p
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Degree
Master of Science (M.Sc.)
Department
College of Kinesiology
Program
College of Kinesiology