comparison of the on-hand and off-hand straight spikes in volleyball
abstract
the purpose of this study was twofold: 1) to examine the differences
between the on-hand side and off-hand side spikes in volleyball in terms
of velocity and accuracy, and 2) to evaluate the relationship of the
angle of projection with velocity in each spike. the subjects (n=12)
were members of 1979-80 university of alberta volleyball team.
the research design employed a repeated measures technique with
two variables, the on-hand and off-hand spikes. subjects were required
to perform 20 straight spikes for each technique. the velocity and
the angle of projection data for each trial were obtained by cinematographical analysis. accuracy scores were collected by direct recording after each trial.
a correlated t test was used to determine the differences in
velocity and accuracy between the on-hand and the off-hand spikes.
a pearson product-moment correlation coefficient was used to assess
the relationship between the velocity and the angle of projection of
each spiking technique for each subject. a further correlated t test
was used to determine differences in that relationship between the
on-hand and off-hand spikes.
the results indicated that the differences between the on-hand and
off-hand spikes, in terms of velocity and accuracy, were significant
(p < .05). there was no relationship between the velocity and the angle of projection for the on-hand spike but a low significant relationship
was observed for the off-hand spike. the difference in relationship of
velocity and angle of projection between both spiking techniques was not
significant. several recommendations for future researches in this area
were offered.
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