Relative Intensity Influences the Degree of Correspondence of Jump Squats and Push Jerks to Countermovement Jumps
| Autor: | Daniel J. Cleather, Jon E. Goodwin, Emily J Cushion |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
musculoskeletal diseases
Male Weight Lifting Movement Physical Therapy Sports Therapy and Rehabilitation Squat Impulse (physics) Knee Joint Inverse dynamics 03 medical and health sciences Young Adult 0302 clinical medicine medicine Humans Orthopedics and Sports Medicine Force platform Muscle Strength Mathematics Orthodontics 030229 sport sciences General Medicine Jerk medicine.anatomical_structure Lower Extremity Jump Joints Ankle 030217 neurology & neurosurgery |
| Zdroj: | Journal of strength and conditioning research. 30(5) |
| ISSN: | 1533-4287 1064-8011 |
| Popis: | The aim of this study was to determine the mechanical similarity between push jerk (PJ) and jump squat (JS) to countermovement jump (CMJ) and further understand the effect increasing external load may have on this relationship. Eight physically trained males (age 22 ± 3; height 176 ± 7 kg; weight 83 ± 8 kg) performed an unloaded CMJ followed by JS under a range of loads (10%, 25%, 35% and 50% 1RM back squat) and PJ (30%, 50%, 65% and 75% 1RM push jerk). A portable force platform and high speed camera both collecting at 250 Hz were used to establish joint moments and impulse during the propulsive phase of the movements. A standard inverse dynamics model was used to determine joint moment and impulse at the hip, knee and ankle. Significant correlations (p |
| Databáze: | OpenAIRE |
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