BIOMECHANICAL CHARACTERISTICS DURING VARIATIONS
Cardiff Metropolitan University
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Rusga, T. (2013) Biomechanical Characteristics During Variations of The Power Clean. Athletes training close to their physiological maxima should use strength and conditioning exercises that provide the necessary specific overload to optimize transfer from training to performance. When training for lower body propulsive power the power clean and its variations are considered the ‘gold standard’. Therefore the purpose of this paper is to examine the biomechanical characteristics that occur during commonly used variations of the power clean. Three collegiate athletes (age 20 ±1, mass 84.7 ±3.9 kg, 1.76 ± 0.06 m height) with at least 2 years experience performing the Olympic lifts as part of a structured strength & conditioning program performed power cleans, hang cleans and box cleans. A Synchronised Kistler force plate and a CODATM system collected kinematic and kinetic data. Ground reaction force data and angular kinematics were reported and quasistatic analysis was used to quantify the joint torque and power at the ankles, knees and hips. The power clean displayed significantly greater (p=0.05) peak joint torque and power at the hip during the second pull stage (0.92 ± 0.25 Nm/BW vs. 0.61 ± 0.27Nm/BW and 0.54 ± 0.34 Nm/BW and 0.61 ± 0.27Nm/BW) whereas the box clean showed significantly greater peak joint torque and power at the knee during the second pull (0.88 ± 0.34Nm/BW vs. 0.56 ± 0.18Nm/BW). These results may aid athletes and strength and conditioning coaches in selecting the most specific and ecologically valid exercises to ensure that desired adaptations are achieved.
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