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    Thigh-muscles strength training, dance exercise, dynamometry, and anthropometry in professional ballerinas.

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    Authors
    Koutedakis, Yiannis
    Sharp, N. C. Craig
    Issue Date
    2004
    
    Metadata
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    Abstract
    The purpose of the present study was to assess the effects of 12 weeks of quadriceps and hamstring strength training on torque levels after a dance exercise and on selected anthropometric parameters. The sample consisted of 22 (ages, 25 +/- 1.3 years) full-time professional ballerinas who were randomly assigned into experimental (n = 12) and control (n = 10) groups. A dance routine designed to cause fatigue within 5 minutes, isokinetic dynamometry, and anthropometric assessments were conducted before and after strength training in both groups. Before strength training, the dance routine resulted in significant reductions of hamstring (p < 0.001) and quadriceps (p < 0.001) peak torques in both subject groups. However, after strength training, only control subjects demonstrated such torque decrements (p < 0.001) after the dance routine. Furthermore, the experimental group revealed greater knee extension (119 vs. 138 N.m; p < 0.001) and flexion (60 vs. 69 N.m; p < 0.001) torques, smaller sum of skinfolds (33.6 vs. 27.8 mm; p < 0.01), more fat-free mass (37.7 vs. 39.4 kg; p < 0.05), but unchanged body mass (p > 0.05) and thigh circumferences (p > 0.05). A negative relationship (p < 0.001) was found between initial strength levels and improvements measured at the end of the 12-week program. These results suggest that supplementary strength training for hamstring and quadriceps muscles is beneficial to professional ballerinas and their dancing; weaker individuals are more likely to benefit from such regimens than their stronger counterparts, whereas increases in thigh-muscle strength do not alter selected aesthetic components.
    Citation
    Journal of strength and conditioning research, 18 (4): 714-8
    Publisher
    Human Kinetics Publishers, Inc.
    Journal
    Journal of strength and conditioning research / National Strength & Conditioning Association
    URI
    http://hdl.handle.net/2436/106631
    DOI
    10.1519/13983.1
    PubMed ID
    15574072
    Additional Links
    http://journals.lww.com/nsca-jscr/Abstract/2004/11000/Thigh_Muscles_Strength_Training,Dance.5.aspx
    Type
    Journal article
    Language
    en
    ISSN
    1064-8011
    ae974a485f413a2113503eed53cd6c53
    10.1519/13983.1
    Scopus Count
    Collections
    Faculty of Education, Health and Wellbeing

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