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    Modelling the relationship between isokinetic muscle strength and sprint running performance.

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    Authors
    Dowson, M. N.
    Nevill, Mary E.
    Lakomy, H. K.
    Nevill, Alan M.
    Hazeldine, R. J.
    Issue Date
    1998
    
    Metadata
    Show full item record
    Abstract
    Muscle strength is thought to be a major factor in athletic success. However, the relationship between muscle strength and sprint performance has received little attention. The aim of this study was to examine the relationship in elite performers of isokinetic muscle strength across three lower limb joints and sprinting performance, including the use of theoretical models. Eight rugby players, eight track sprinters and eight competitive sportsmen, all elite national or regional competitors, performed sprints over 15 m and 35 m with times recorded over 0-15 m and 30-35 m. Isokinetic torque was measured at the knee, hip and ankle joints at low (1.05 rad s(-1)), intermediate (2.09 or 2.62 rad s(-1)) and high (3.14 or 4.19 rad s(-1)) speeds during concentric and eccentric muscle actions. Using linear regression and expressing sprint performance as time, the strongest relationship, for the joint actions and speeds tested, was between concentric knee extension at 4.19 rad s(-1) and sprint performance (0-15 m times: r=-0.518, P< 0.01; 30-35 m times: r=-0.688, P< 0.01). These relationships were improved for 0-15 m, but not for 30-35 m, by expressing torque relative to body mass (0-15 m times: r=-0.581; 30-35 m times: r=-0.659). When 0-15 m performance was expressed as acceleration rather than time, the correlation was improved slightly (r=0.590). However, when the data (0-15 m times) were fitted to the allometric force model proposed by Gunther, 77% of the variance in concentric knee extension torque at 4.19 rad s(-1) could be explained by 0-15 m times, limb length (knee to buttocks) and body mass. The fitted parameters were similar to those from the theoretical model. These findings suggest that the relationship between isokinetic muscle strength and sprint performance over 0-15 m (during the acceleration phase) is improved by taking limb length and body mass into account.
    Citation
    Journal of Sports Sciences, 16(3): 257-265
    Publisher
    London: Taylor & Francis Ltd.
    Journal
    Journal of Sports Sciences
    URI
    http://hdl.handle.net/2436/82893
    DOI
    10.1080/026404198366786
    PubMed ID
    9596360
    Additional Links
    http://www.ingentaconnect.com/content/tandf/rjsp/1998/00000016/00000003/art00005
    Type
    Journal article
    Language
    en
    ISSN
    0264-0414
    1466447X
    ae974a485f413a2113503eed53cd6c53
    10.1080/026404198366786
    Scopus Count
    Collections
    Faculty of Education, Health and Wellbeing

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