The contribution of underwater kicking efficiency in determining "turning performance" in front crawl swimming.
J Sports Med Phys Fitness
; 52(5): 457-64, 2012 Oct.
Article
en En
| MEDLINE
| ID: mdl-22976731
ABSTRACT
AIM:
The aim of this study was to analyze the effects 1) of maximal velocity (vout max) and acceleration (aout max) attained during the turn; 2) of deceleration (-aglide) and glide efficiency (GE) in the gliding phase after the turn; and 3) of the efficiency (hF) of the dolphin kick in determining the velocity and acceleration in the first 5 and the following 10 m after a turn (v5, v5-15, a5 and a5-15) in a 100 m simulated front crawl race.METHODS:
The experiments were conducted on 13 swimmers (7M/5F) and all the above mentioned parameters were derived from underwater kinematical analysis.RESULTS:
The 100 m times were smaller the larger v5, v5-15, a5 and a5-15. In turn, v5, v5-15, a5 and a5-15 were significantly related to vout max and aout max as well as to ηF and GE (R>0.57, P<0.05).CONCLUSION:
Data reported in this study indicate that in the first 5-15 m after the turn, velocity is essentially sustained by the force generated by the swimmer on the pool wall but also indicate the importance of an efficient dolphin kick (and of a streamlined glide) in determining the values of velocity and acceleration in this phase of the race.
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Banco de datos:
MEDLINE
Asunto principal:
Natación
/
Extremidad Inferior
/
Rendimiento Atlético
Límite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Sports Med Phys Fitness
Año:
2012
Tipo del documento:
Article
País de afiliación:
Italia