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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology


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The Journal of Sports Medicine and Physical Fitness 2018 Jan 10

DOI: 10.23736/S0022-4707.18.07852-0

Copyright © 2018 EDIZIONI MINERVA MEDICA

language: English

A previous hamstring injury affects kicking mechanics in soccer players

Archit NAVANDAR , Santiago VEIGA, Gonzalo TORRES, David CHORRO, Enrique NAVARRO

Faculty of Sports Sciences, Universidad Politécnica de Madrid, Madrid, Spain


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BACKGROUND: Although the kicking skill is influenced by limb dominance and sex, how a previous hamstring injury affects kicking has not been studied in detail. Thus, the objective of this study was to evaluate the effect of sex and limb dominance on kicking in limbs with and without a previous hamstring injury.
METHODS: 45 professional players (males: n=19, previously injured players=4, age=21.16 ± 2.00 years; females: n=19, previously injured players=10, age=22.15 ± 4.50 years) performed 5 kicks each with their preferred and non-preferred limb at a target 7m away, which were recorded with a three-dimensional motion capture system. Kinematic and kinetic variables were extracted for the backswing, leg cocking, leg acceleration and follow through phases.
RESULTS: A shorter backswing (20.20 ± 3.49% vs 25.64 ± 4.57%), and differences in knee flexion angle (58 ± 10o vs 72 ± 14o) and hip flexion velocity (8 ± 0rad/s vs 10 ± 2rad/s) were observed in previously injured, non-preferred limb kicks for females. A lower peak hip linear velocity (3.50 ± 0.84m/s vs 4.10 ± 0.45m/s) was observed in previously injured, preferred limb kicks of females. These differences occurred in the backswing and leg-cocking phases where the hamstring muscles were the most active. A variation in the functioning of the hamstring muscles and that of the gluteus maximus and iliopsoas in the case of a previous injury could account for the differences observed in the kicking pattern.
CONCLUSIONS: Therefore, the effects of a previous hamstring injury must be considered while designing rehabilitation programs to re-educate kicking movement.


KEY WORDS: Biomechanics - Kinematics - Kinetics - Inverse dynamics - Sex differences

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Publication History

Article first published online: January 10, 2018
Manuscript accepted: January 4, 2018
Manuscript revised: December 19, 2017
Manuscript received: June 6, 2017

Cite this article as

Navandar A, Veiga S, Torres G, Chorro D, Navarro E. A previous hamstring injury affects kicking mechanics in soccer players. J Sports Med Phys Fitness 2018 Jan 10. DOI: 10.23736/S0022-4707.18.07852-0

Corresponding author e-mail

archit.navandar@upm.es