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Advisor(s)
Abstract(s)
The aim of the present study was to assess the
kinematical changes when swimming maximal bouts in
Front Crawl and Breaststroke with the AquaTrainer® snorkel.
Thirteen male swimmers (7 at Breaststroke and 6 at
Front Crawl) of national level performed randomly two
maximal bouts of 100-m swims: one bout using the Aqua-
Trainer® snorkel (snorkel swim) and another one without
the snorkel (free swim). The swims were videotaped in sagital
plane with a pair of cameras providing 2D kinematics
evaluation. The following measures were assessed: swimming
performance (T100), stroke cycle period (P), stroke
rate (SR), stroke length (SL), swimming velocity (v),
swimming eYciency as estimated by the stroke index (SI),
speed Xuctuation (dv) and the mathematical characterisation
of dv. T100 was signiWcantly higher when swimming
with the snorkel than in free swimming at Breaststroke
(= 6.26%) and at Front Crawl (= 4.75%). P, SR and
SL, as well as SI and dv did not present signiWcant diVerences.
The main Wnding of the study was that changes in the
swimming velocity imposed by the use of the Aquatrainer®
do not seem due to changes in general kinematics or
swimming eYciency
Description
Keywords
Competitive swimming Stroke rate Stroke length Speed Xuctuation Swimming snorkel
Citation
Barbosa, Tiago M.; Silva, A.J.; Reis, A.; Costa, M.J.; Garrido, N.; Policarpo, F.; Reis, V.M. (2010). Kinematical changes in swimming front crawl and breaststroke with the AquaTrainer® snorkel. European Journal of Applied Physiology. ISSN 1439-6327. 109:6, p. 1155-1162
Publisher
Springer