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Bilateral differences on dancers’ dynamic postural stability during jump landings
Clarke, Frances Wilson, Margaret Wyon, Matthew
Clarke, Frances
Wilson, Margaret
Wyon, Matthew
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2020-12-01
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Abstract
Purpose: Although traditional dance training aims to train dancers’ legs equally, the recognised practice of predominately starting and repeating exercises on one side more than the other has led to suggestions that technique classes may cause lateral bias. Such an imbalance could lead to a greater risk of injury, however, despite this potential risk, little is known about the effects of bilateral differences on dancers’ postural stability during jump landings, a key dynamic action in dance. Therefore, the aim of this study was to examine the effects of possible bilateral differences on dynamic postural stability during single-leg landing using a time to stabilisation protocol. Methods: Thirty-two injury-free female dance university undergraduates (19+1.9 years; 164.8+6.7cm; 62.6+13.6kg) volunteered. They completed a two foot to one-foot jump over a bar onto a force platform stabilising as quickly as possible. The landing leg was randomly assigned, and participants completed three trials for each leg. Results: No significant differences in dynamic postural stability between the right and left leg were revealed and poor effect size was noted (p>0.05): MLSI: t= -.04, df= 190, p= .940 (CI= -.04,.04, r2 = 0); APSI: t= .65, df= 190, p= .519 (CI= -.06-,.12, r2 =.09); VSI: t= 1.85, df= 190, p= .066 (CI= -.02,.68, r2 = .27); DPSI: t= 1.88, df= 190, p= .061 (CI= -.02, .70, r2 30 = .27). Conclusion: The results of this study on jump landings do not support the notion that dance training may cause lateral bias with its associated risk of injury, although lateral bias may be present elsewhere. Furthermore, dancers’ perceptions of their leg dominance did not correlate with their ability to balance in single-leg landings or to absorb GRFs often associated with injury. Even when unequal training exists, it may not have detrimental effects on the dancer’s postural stability
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Clarke, F., Koutedakis, Y., Wilson, M. and Wyon, M. (2020) Bilateral differences on dancers’ dynamic postural stability during jump landing, Journal of Dance Medicine & Science, 24(4), pp. 183-189.
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Journal article
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en
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This is an accepted manuscript of an article published by J.Michael Ryan in Journal of Dance Medicine & Science on 1/12/2020, available online at: https://doi.org/10.12678/1089-313X.24.4.183
The accepted version of the publication may differ from the final published version.
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1089-313X