Do stiffness and asymmetries predict change of direction performance?
Affiliation
University of BedfordshireIssue Date
2016-04-30Subjects
cuttingagility
leg-spring behaviour
spring-mass model
torsional spring model
C600 Sports Science
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Show full item recordAbstract
Change of direction speed (CODS) underpins performance in a wide range of sports but little is known about how stiffness and asymmetries affect CODS. Eighteen healthy males performed unilateral drop jumps to determine vertical, ankle, knee and hip stiffness, and a CODS test to evaluate left and right leg cutting performance during which ground reaction force data were sampled. A step-wise regression analysis was performed to ascertain the determinants of CODS time. A two-variable regression model explained 63% (R-2 = 0.63; P = 0.001) of CODS performance. The model included the mean vertical stiffness and jump height asymmetry determined during the drop jump. Faster athletes (n = 9) exhibited greater vertical stiffness (F = 12.40; P = 0.001) and less asymmetry in drop jump height (F = 6.02; P = 0.026) than slower athletes (n = 9); effect sizes were both "large" in magnitude. Results suggest that overall vertical stiffness and drop jump height asymmetry are the strongest predictors of CODS in a healthy, non-athletic population.Citation
Maloney SJ, Richards J, Nixon DGD, Harvey LJ, Fletcher IM (2016) 'Do stiffness and asymmetries predict change of direction performance?', Journal of Sports Sciences, 35 (6), pp.547-556.Publisher
TAYLOR & FRANCIS LTDJournal
Journal of Sports SciencesPubMed ID
27133586Additional Links
http://www.tandfonline.com/doi/abs/10.1080/02640414.2016.1179775?journalCode=rjsp20Type
ArticleLanguage
enISSN
0264-0414ae974a485f413a2113503eed53cd6c53
10.1080/02640414.2016.1179775
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