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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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CAN 8-WEEKS OF TRAINING AFFECT ACTIVE DRAG IN YOUNG SWIMMERS? |
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Daniel A. Marinho1,2  ,
Tiago M. Barbosa2,3, Mário J. Costa2,3,4, Catarina
Figueiredo1,2, Victor M. Reis2,4, António J. Silva2,4
and Mário C. Marques1,2 |
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1University of Beira Interior, Sport Sciences Department, Covilhã, Portugal, 2Research Centre in Sports, Health and Human Development,Vila Real, Portugal, 3Polytechnic Institute of Bragança, Sport Department, Bragança, Portugal, 4University of Trás-os-Montes and Alto Douro, Sport, Health and Exercise Department, Vila Real, Portugal. |
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© Journal of Sports Science and Medicine (2010) 9, 71 - 78 |
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| ABSTRACT | |||
| The aim of this study was to assess the effects of 8-weeks of
training on active drag in young swimmers of both genders. Eight girls and
twelve boys' belonging to the same swimming team and with regular competitive
participation in national and regional events for the previous two seasons
participated in this study. Active drag measurements were conducted in two
different evaluation moments: at the beginning of the season and after 8
weeks of training (6.0 ± 0.15 training units per week, 21.00 ± 3.23 km per
week and 3.50 ± 0.23 km per training unit). The maximal swimming velocity
at the distance of 13 m, active drag and drag coefficient were measured
on both trials by the method of small perturbations with the help of an
additional hydrodynamic body. After 8 weeks of training, mean active drag
(drag force and drag coefficient) decreased in girls and boys, although
no significant differences were found between the two trials. It seems that
8 weeks of swimming training were not sufficient to allow significant improvements
on swimming technique. Key words: Swimming, children, technique, drag, training effects. |
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