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- W2169942011 abstract "The etiology of patellar tendinopathy (jumper’s knee) has been attributed to a significant increase in patellar tendon torques associated with jumping. While some investigators have suggested that patellar tendon torques are greater during takeoff, little is known about the relative magnitudes of patellar tendon torques during takeoff and landing. We hypothesized that peak patellar tendon torques are greater in jump takeoff than in landing, and that there is a linear correlation between jump height and peak patellar tendon torque. Seven asymptomatic, recreational male athletes each performed a series of 21 jumps ranging from low to maximal height. A calibrated fiber-optic sensor, implanted transversely within the patellar tendon was used to measure the knee torque during takeoff and landing. There was no significant difference in the peak patellar tendon torque experienced during takeoff and landing within individuals. There was a moderate correlation ( r = .64) between maximum takeoff patellar tendon torques and jump height. There was a weak correlation ( r = .52) between maximum landing patellar tendon torques and jump height. There was a moderate correlation ( r = .67) between maximum 60°/s isokinetic extension torque and maximum jump height. The lack of a strong correlation between jump height and patellar tendon forces during takeoff or landing suggests that these forces may be technique dependent. Therefore, modifying takeoff and/or landing techniques could reduce patellar tendon force and potentially lessen the incidence of patellar tendinopathy." @default.
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- W2169942011 date "2009-11-01" @default.
- W2169942011 modified "2023-09-23" @default.
- W2169942011 title "A Preliminary Study of Patellar Tendon Torques during Jumping" @default.
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- W2169942011 doi "https://doi.org/10.1123/jab.25.4.360" @default.
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