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    Movement velocity as a measure of exercise intensity in three lower limb exercises.

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    Authors
    Conceição, Filipe
    Fernandes, Juvenal
    Lewis, Martin
    Gonzaléz-Badillo, Juan José
    Jimenéz-Reyes, Pedro
    Affiliation
    Nottingham Trent University
    Issue Date
    2015-09-22
    
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    Abstract
    The purpose of this study was to investigate the relationship between movement velocity and relative load in three lower limbs exercises commonly used to develop strength: leg press, full squat and half squat. The percentage of one repetition maximum (%1RM) has typically been used as the main parameter to control resistance training; however, more recent research has proposed movement velocity as an alternative. Fifteen participants performed a load progression with a range of loads until they reached their 1RM. Maximum instantaneous velocity (Vmax) and mean propulsive velocity (MPV) of the knee extension phase of each exercise were assessed. For all exercises, a strong relationship between Vmax and the %1RM was found: leg press (r2adj = 0.96; 95% CI for slope is [−0.0244, −0.0258], P < 0.0001), full squat (r2adj = 0.94; 95% CI for slope is [−0.0144, −0.0139], P < 0.0001) and half squat (r2adj = 0.97; 95% CI for slope is [−0.0135, −0.00143], P < 0.0001); for MPV, leg press (r2adj = 0.96; 95% CI for slope is [−0.0169, −0.0175], P < 0.0001, full squat (r2adj = 0.95; 95% CI for slope is [−0.0136, −0.0128], P < 0.0001) and half squat (r2adj = 0.96; 95% CI for slope is [−0.0116, 0.0124], P < 0.0001). The 1RM was attained with a MPV and Vmax of 0.21 ± 0.06 m s−1 and 0.63 ± 0.15 m s−1, 0.29 ± 0.05 m s−1 and 0.89 ± 0.17 m s−1, 0.33 ± 0.05 m s−1 and 0.95 ± 0.13 m s−1 for leg press, full squat and half squat, respectively. Results indicate that it is possible to determine an exercise-specific %1RM by measuring movement velocity for that exercise.
    Citation
    Conceição, F., Fernandes, J., Lewis, M., Gonzaléz-Badillo, J.J. and Jimenéz-Reyes, P., (2016). 'Movement velocity as a measure of exercise intensity in three lower limb exercises'. Journal of sports sciences, 34(12), pp, 1099-1106. DOI: 10.1080/02640414.2015.1090010
    Publisher
    Taylor & Francis
    Journal
    Journal of Sports Sciences
    URI
    http://hdl.handle.net/10545/624286
    DOI
    10.1080/02640414.2015.1090010
    PubMed ID
    26395837
    Additional Links
    http://irep.ntu.ac.uk/id/eprint/27389
    https://www.tandfonline.com/doi/full/10.1080/02640414.2015.1090010
    Type
    Article
    Language
    en
    ISSN
    1466-447X
    ae974a485f413a2113503eed53cd6c53
    10.1080/02640414.2015.1090010
    Scopus Count
    Collections
    School of Human Sciences

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