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Biomechanical comparison of the track start and the modified one-handed track start in competitive swimming: an intervention study

Galbraith, H, Scurr, J, Hencken, C, Wood, L and Graham-Smith, P 2008, 'Biomechanical comparison of the track start and the modified one-handed track start in competitive swimming: an intervention study' , Journal of Applied Biomechanics, 24 (4) , pp. 307-315.

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    Abstract

    This study compared the conventional track and a new one-handed track start in elite age group swimmers to determine if the new technique had biomechanical implications on dive performance. Five male and seven female GB national qualifiers participated (mean ± SD: age 16.7 ± 1.9 years, stretched stature 1.76 ± 0.8 m, body mass 67.4 ± 7.9 kg) and were assigned to a control group (n = 6) or an intervention group (n = 6) that learned the new onehanded dive technique. All swimmers underwent a 4-week intervention comprising 12 ± 3 thirty-minute training sessions. Video cameras synchronized with an audible signal and timing suite captured temporal and kinematic data. A portable force plate and load cell handrail mounted to a swim starting block collected force data over 3 trials of each technique. A MANCOVA identified Block Time (BT), Flight Time (FT), Peak Horizontal Force of the lower limbs (PHF) and Horizontal Velocity at Take-off (Vx) as covariates. During the 10-m swim trial, significant differences were found in Time to 10 m (TT10m), Total Time (TT), Peak Vertical Force (PVF), Flight Distance (FD), and Horizontal Velocity at Take-off (Vx) (p < .05). Results indicated that the conventional track start method was faster over 10 m, and therefore may be seen as a superior start after a short intervention. During training, swimmers and coaches should focus on the most statistically significant dive performance variables: peak horizontal force and velocity at take-off, block and flight time.

    Item Type: Article
    Uncontrolled Keywords: diving, force platform, kinematics, kinetics
    Themes: Health and Wellbeing
    Schools: Colleges and Schools > College of Health & Social Care > School of Health Sciences > Centre for Health Sciences Research
    Colleges and Schools > College of Health & Social Care
    Colleges and Schools > College of Health & Social Care > School of Health Sciences
    Journal or Publication Title: Journal of Applied Biomechanics
    Publisher: Human Kinetics
    Refereed: Yes
    ISSN: 1065-8483
    Related URLs:
    Depositing User: RH Shuttleworth
    Date Deposited: 16 May 2011 12:48
    Last Modified: 20 Aug 2013 17:52
    URI: http://usir.salford.ac.uk/id/eprint/15800

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