Relationship between rate of torque development and contractile impulse in three muscle groups Public Deposited

http://ir.library.oregonstate.edu/concern/undergraduate_thesis_or_projects/pc289k986

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  • Background: The capability of an individual to produce force rapidly is important for performance of sporting activities and to stabilize a joint to protect against injury. Rate of torque development (RTD) and contractile impulse (CI) may be more effective than peak torque in assessing rapid torque production. The relationship between RTD and CI at different time intervals is unknown. Methods: Forty-seven individuals completed isometric strength testing for knee extension, hip extension, and plantarflexion. Pearson product-moment correlation coefficients were calculated between RTD and CI for each of the following time intervals: 0-25, 0-50, 0-100, 0150, 0-200, 0-250, and 0-300 ms. Results: There was a strong relationship between RTD and CI for all time intervals for the knee extensors and plantar flexors. There was a strong relationship between RTD and CI for the hip extensors for time intervals up to 0-200 ms and a moderate relationship for time intervals 0-250 and 0-300 ms. Conclusion: RTD and CI may be equally effective in characterizing explosive force production in the knee extensors and plantar flexors for all time intervals and in the hip extensors for earlier time intervals. CI may be more effective for the later time intervals for the hip extensors.
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