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Isometric Mid-Thigh Pull Performance Is Associated With Athletic Performance And Sprinting Kinetics In Division I Men And Women's Basketball Players.

Townsend Jeremy R.; Bender, David; Vantrease, William; Hudy, John; Huet, Kevin; Williamson, Cassie; Bechke, Emily; Serafini, Paul; Mangine, Gerald T.
Journal of Strength & Conditioning Research: Post Acceptance: July 31, 2017
doi: 10.1519/JSC.0000000000002165
Original Research: PDF Only

Purpose: To examine the relationships between isometric mid-thigh pull (IMTP) force, athletic performance measures, and sprint kinetics in Division I men's and women's basketball players.

Methods: Twenty-three (male = 8, female = 15) division 1 basketball players completed a maximal 20-m sprint trial while tethered to a device which provided kinetic feedback (peak and average sprinting power, velocity and force). Additionally, one repetition-maximal (1RM) front squat, 1RM hang clean, vertical jump height, and agility (pro-agility and lane agility) tests were performed. Rate of force development (RFD) at 50ms, 100ms, 150ms, 200ms and 250ms of IMTP, as well as peak force (PF) were also collected. Pearson product-moment correlation analysis was used to examine the relationships between these measures.

Results: Significant (p < 0.05) relationships were observed between IMTP PF and sprint time over all distances (5 - 20m; r = -0.62 to 0.69), average sprint velocity (r = 0.50 to 0.70), peak sprint velocity (r = 0.50 to 0.54), average sprint force (r = 0.48 to 0.69), and average sprint power (r = 0.62 to 0.73). Sprinting kinetic measures (average force and power) over the first 5 meters were also significantly (p < 0.05) related to IMTP RFD (50 - 250ms; r = 0.42 to 0.62). Conclusion: Results indicate that IMTP variables are significantly associated with 20-m sprint kinetics. Specifically, IMTP RFD appears to be related to the initial acceleration kinetics of a sprint. Strength and conditioning professionals can possibly implement the IMTP for improved assessment and monitoring of athletic performance and training.

Copyright (C) 2017 by the National Strength & Conditioning Association.