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| Center of Pressure Posturografi× | Reaktiv styrkeindex× | |
|---|---|---|
| Ämnesområde | Idrottsvetenskap | Idrottsvetenskap |
| Familj | Hypothesis test | Hypothesis test |
| Ursprungsår≠ | 2000 | 1987 |
| Upphovsperson≠ | Teodoro Duarte | Marteen Bobbert |
| Typ≠ | force plate analysis | elastic response test |
| Ursprungskälla≠ | Duarte, M., & Freitas, S. M. (2010). Revision of posturography based on force plate for balance evaluation. Revista Brasileira de Fisioterapia, 14(3), 183-192. link ↗ | Bobbert, M. F., Huijing, P. A., & van Ingen Schenau, G. J. (1987). Drop jumping. II. The influence of dropping height on the biomechanics of takeoff after landing. Medicine & Science in Sports & Exercise, 19(4), 339-346. DOI ↗ |
| Alias≠ | CoP, postural sway, balance analysis, stability assessment | RSI, stretch-shortening cycle, elastic response |
| Närliggande≠ | 4 | 3 |
| Sammanfattning≠ | Center of pressure (CoP) posturography measures postural stability by analyzing the movement of the body's center of pressure—the point where the total force of body weight is concentrated—during quiet stance or dynamic balance tasks. Formalized by Duarte and colleagues (2000), CoP analysis provides quantitative metrics of postural sway including sway area, path length, and velocity. These measurements reflect the integrated function of sensory systems (proprioception, vestibular, visual), central integration, and motor control. CoP posturography is widely used in neurology, vestibular medicine, rehabilitation, and sports science to detect balance deficits and monitor recovery. | The reactive strength index (RSI) is a measure of lower-body reactive strength and elastic energy utilization, calculated as jump height divided by the contact time between landing from a drop and takeoff. Introduced by Bobbert and colleagues (1987), RSI quantifies the efficiency of the stretch-shortening cycle (SSC)—the ability to rapidly switch from eccentric (lengthening) to concentric (shortening) muscle contractions. High RSI indicates rapid, forceful engagement of muscles' elastic properties (tendons, contractile proteins) and is relevant in sports requiring rapid rebound (sprinting, jumping, rebounding). RSI is trainable and sensitive to plyometric training. |
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