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| Изокинетична динамометрия× | Контра-скок (Counter-Movement Jump)× | |
|---|---|---|
| Област | Спортна наука | Спортна наука |
| Семейство | Hypothesis test | Hypothesis test |
| Година на възникване≠ | 1967 | 1983 |
| Създател≠ | Henry Hislop | Paavo Komi |
| Тип≠ | constant-velocity testing | jumping test |
| Основополагащ източник≠ | Hislop, H. J., & Perrine, J. J. (1967). The isokinetic concept of exercise. Physical Therapy, 47(2), 114-117. DOI ↗ | Bosco, C., Luhtanen, P., & Komi, P. V. (1983). A simple method for measurement of mechanical power in jumping. European Journal of Applied Physiology, 50(2), 273-282. DOI ↗ |
| Други названия | isokinetic testing, constant velocity testing, dynamometric testing | CMJ, jump height, explosive power |
| Свързани≠ | 5 | 3 |
| Резюме≠ | Isokinetic dynamometry measures muscular strength and power production during movement at a constant, preset velocity. Pioneered by Hislop and Perrine (1967), isokinetic testing constrains limb velocity to a fixed speed (e.g., 60°/s or 120°/s), while the dynamometer adjusts resistance to match the subject's force production at each instant, accommodating all variations in force throughout the range of motion. This approach provides comprehensive strength profiling across a full joint range and allows comparison of concentric and eccentric contractions. Isokinetic testing is widely used in clinical rehabilitation, sports medicine, and research due to its objectivity and standardization. | The counter-movement jump (CMJ) is a simple, field-friendly test of lower-body explosive power in which the athlete stands on a force plate, descends into a shallow squat (counter-movement phase), and explosively extends to jump as high as possible. Pioneered by Bosco and Komi (1983), the CMJ captures the integrated function of strength, rate of force development, and elastic energy utilization. Jump height (measured via flight time from force plate or motion capture) and peak power are reported. The CMJ is among the most widely used tests in sports science, athlete monitoring, and research due to simplicity, objectivity, and relevance to explosive power in nearly all sports. |
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