Do stiffness and asymmetries predict change of direction performance?
Autor: | Joanna C. Richards, Sean J. Maloney, Iain M. Fletcher, Daniel G.D. Nixon, Lewis J. Harvey |
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Rok vydání: | 2016 |
Předmět: |
Male
Movement Physical Therapy Sports Therapy and Rehabilitation Plyometric Exercise Young Adult 03 medical and health sciences 0302 clinical medicine medicine Humans Plyometrics Knee Orthopedics and Sports Medicine Vertical stiffness Ground reaction force Muscle Skeletal Simulation Mathematics Orthodontics Leg Hip Anthropometry Stiffness Regression analysis 030229 sport sciences Biomechanical Phenomena medicine.anatomical_structure Lower Extremity Motor Skills Drop jump Jump Regression Analysis Ankle medicine.symptom 030217 neurology & neurosurgery |
Zdroj: | Journal of Sports Sciences. :1-10 |
ISSN: | 1466-447X 0264-0414 |
Popis: | 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% (R2 = 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 heal... |
Databáze: | OpenAIRE |
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