Forward velocity in relation to a specific timing sequence in butterfly swimming
Abstract
Six female and 5 male subjects performed a maximal effort
100 yd, butterfly time trial. The purpose of the test was
to investigate if, there was a link between the swimmer's
forward velocity and the amount of time between the end of
the downward portion of the first kick and the finish of the
outsweep of the hands. Subjects were filmed underwater from
the front in order to best show the movements of interest.
The sequence was then analyzed on a stop action/single frame
advance VHS player. A constant frame speed of 30 frames per
second was utilized. No statistical difference was found in
the comparison between the timing pattern and velocity.
other comparisons between the change in the subject's 2nd
and 4th length were studied, such as: the increase in the
swimming time, and number sf strokes. None of the
comparisons were significant. A paired t-test did show a
significant increase (P = .01) between the subjects 2nd and
4th length velocities. Individual difference variables may
be the reason for these differences.
Subject
Swimming - Butterfly stroke
Human mechanics