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Differences in end range of motion vertical jump kinetic and kinematic strategies between trained weightlifters and elite short track speed skaters

Version 2 2024-06-04, 07:38
Version 1 2016-04-19, 12:36
journal contribution
posted on 2024-06-04, 07:38 authored by WB Haug, W Spratford, KJ Williams, DW Chapman, Eric DrinkwaterEric Drinkwater
The purpose of this investigation was to identify differences in end range of motion (ROM) kinetic and kinematic strategies between highly resistance and vertical jump-trained athletes and controls. Weightlifters (WL: n 4), short track speed skaters (STSS: n 5), and nonresistance-trained controls (C: n 6) performed 6 standing vertical squat jumps (SJ) and countermovement jumps (CMJ) without external resistance. Jump testing was performed using 3-dimensional marker trajectories captured with a 15-camera motion analysis system synchronized with 2 in-ground force plates. During SJ, there were large effects for the difference in time before toe off of peak vertical velocity between WL to STSS and C (ES: -1.43; ES: -1.73, respectively) and for the decrease between peak and toe off vertical velocity (ES: -1.28; ES: -1.71, respectively). During CMJ, there were large effects for the difference in time before toe off of peak vertical velocity between WL to STSS and C (ES: -1.28; ES: -1.53, respectively) and for decrease between peak and toe off vertical velocity (ES: -1.03; ES: -1.59, respectively). Accompanying these differences for both jump types were large effects for time of joint deceleration before toe off for all lower body joints between WL compared with C with large effects between WL and STSS at the hip and between STSS and C at the ankle. These findings suggest that the end ROM kinetic and kinematic strategy used during jumping is group-specific in power-trained athletes, with WL exhibiting superior strategies as compared with resistance- and jump-trained STSS.

History

Journal

Journal of strength and conditioning research

Volume

29

Pagination

2488-2496

Location

Philadelphia, Pa.

ISSN

1064-8011

eISSN

1533-4295

Language

eng

Publication classification

C Journal article, C1.1 Refereed article in a scholarly journal

Copyright notice

2015, Lippincott, Williams & Wilkins

Issue

9

Publisher

Lippincott, Williams & Wilkins