Effects of different oral instructions on kinematic and kinetic parameters during drop vertical jump
| Autor: | Misato Makino, Hiroko Yokoyama, Atsushi Oda, Toshiaki Tsukamoto, Kazuya Shikanai, Eiichi Tsuda, Takaaki Ishikawa |
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| Rok vydání: | 2019 |
| Předmět: |
030506 rehabilitation
Drop vertical jump injury business.industry Drop (liquid) Anterior cruciate ligament Physical Therapy Sports Therapy and Rehabilitation 030229 sport sciences Kinematics Mechanics Kinetic energy 03 medical and health sciences Vertical jump 0302 clinical medicine medicine.anatomical_structure Jump Medicine Original Article Stance time 0305 other medical science business Female students |
| Zdroj: | Journal of Physical Therapy Science |
| ISSN: | 2187-5626 0915-5287 |
| DOI: | 10.1589/jpts.31.670 |
| Popis: | [Purpose] This study aimed to examine the impact of changing the drop vertical jump stance time on kinematic and kinetic parameters by ordering to high jump or quick jump for consistent stance time and a more accurate assessment of anterior cruciate ligament injury risk. [Participants and Methods] The participants were 20 healthy female students. The drop vertical jump was started by instructing the participants to stand on a 30-cm platform with both legs stationary. The task was performed while the participants were instructed to perform high jump or quick jump. [Results] Stance time was significantly shorter with quick jump than with high jump. Quick jump showed significantly higher knee abduction angles at initial contact and peak vertical ground reaction force, and lower hip flexion, knee flexion, and ankle dorsiflexion angles at the lowest point of the center of mass. Quick jump showed a significantly higher peak vertical ground reaction force. The knee abduction moment at initial contact was not significantly different between the 2 conditions. [Conclusion] Quick jump was better than high jump for making stance time consistent, and the differences in kinematic and kinetic characteristics by oral instructions should be considered when using drop vertical jump. |
| Databáze: | OpenAIRE |
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