Impact of Harness Attachment Point on Kinetics and Kinematics During Sled Towing

Journal of Strength and Conditioning Research
Ian BentleyJonathan K Sinclair

Abstract

Resisted sprint training is performed in a horizontal direction and involves similar muscles, velocities, and ranges of motion (ROM) to those of normal sprinting. Generally, sleds are attached to the athletes through a lead (3 m) and harness; the most common attachment points are the shoulder or waist. At present, it is not known how the different harness point's impact on the kinematics and kinetics associated with sled towing (ST). The aim of the current investigation was to examine the kinetics and kinematics of shoulder and waist harness attachment points in relation to the acceleration phase of ST. Fourteen trained men completed normal and ST trials, loaded at 10% reduction of sprint velocity. Sagittal plane kinematics from the trunk, hip, knee, and ankle were measured, together with stance phase kinetics (third footstrike). Kinetic and kinematic parameters were compared between harness attachments using one-way repeated-measures analysis of variance. The results indicated that various kinetic differences were present between the normal and ST conditions. Significantly greater net horizontal mean force, net horizontal impulses, propulsive mean force, and propulsive impulses were measured (p < 0.05). Interestingly, the wais...Continue Reading

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Citations

Dec 11, 2019·Sports Medicine - Open·Benjamin R HindleJustin W L Keogh
Oct 10, 2018·Journal of Strength and Conditioning Research·Ian BentleyChristopher J Edmundson
Oct 13, 2020·Journal of Strength and Conditioning Research·Jason J WilliamsPatrick Saracino

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