title: Non-dominant leg training improves the bilateral motor performance of soccer players.
abstract: The aim of this experiment was to evaluate bilateral motor performance effects from training the non-dominant leg of competitive soccer players. The subjects were 39 soccer players, 15-20 years of age, performance-matched and randomly divided into a training group (n = 18) and a control group (n = 21) both belonging to the same team. Both groups were tested by using two standardised foot-tapping tests and three soccer-specific tests. The training intervention consisted of the experimental group participating in all parts of their soccer training except full play, using the non-dominant leg for 8 weeks. Statistical analyses for the soccer-specific tests revealed that the experimental group improved significantly as compared to the control group from the pre-test to the post-test period in their use of the trained non-dominant leg. Somewhat unexpectedly, the experimental group also improved significantly in the tests, which made use of the dominant side. The standardised foot-tapping tests revealed similar results. The results might be explained by improved generalised motor programmes, or from a Dynamic Systems Approach, indicating that the actual training relates to the handling of all the information available to the subject in the situation, and that the body self-organises the motor performance.
authors.affiliation: Stadion Medical Practice, Bergen, Norway.
authors.forename: E
authors.initials: E
authors.lastname: Haaland
authors.forename: J
authors.initials: J
authors.lastname: Hoff
mesh_terms: D000293:Adolescent; D000328:Adult; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D007866:Leg / Q000502:physiology*; D008297:Male; D010806:Physical Education and Training / Q000379:methods*; D011597:Psychomotor Performance / Q000502:physiology*; D012916:Soccer / Q000502:physiology*; D013647:Task Performance and Analysis