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Advisor(s)
Abstract(s)
The aim of this study was to assess the relationship
between the intra-cyclic variation of the
horizontal velocity (dv) and the velocity of the
4 competitive swimming techniques in young
swimmers. 45 young swimmers performed a
set of maximal 4 × 25 m (freestyle, backstroke,
breaststroke and butterfl y stroke) swims with in
water start. A speed-meter cable was attached
to the swimmer’s hip. The dv and the swimming
velocity were analyzed. Within-subject
tests presented signifi cant variations in the dv
based on the swimming technique. Post-hoc test
revealed signifi cant diff erences across all pairwised
swimming techniques (P < 0.001), except
for the comparison between freestyle and backstroke
(P = 0.98). The dv was higher in the breaststroke,
followed by the butterfl y, the backstroke
and the freestyle. The quadratic models had the
best goodness-of-fi t and the lower error of estimation
for the relationship between the dv and
the swimming velocity in all swimming techniques
(0.24 ≤ R 2 ≤ 0.51). As a conclusion, there is
a non-linear relationship where the increase of
swimming velocity leads to a decrease of dv in
young competitive swimmers.
Description
Keywords
Swimming Kinematics Swim strokes Speed fluctuation Age-group swimmers
Citation
Barbosa, Tiago M.; Morouço, P.G.F.; Jesus, S.; Feitosa, W.G.; M. J. Costa; Marinho, D.A.; Silva, A.J.; Garrido, D.N. (2012). The interaction between intra-cyclic variation of the velocity and mean swimming velocity in young competitive swimmers. International Journal of Sports Medicine. ISSN 1439-3964. 34:2, p. 123-130