Isokinetic torque imbalances of shoulder of the french women's national water polo team
Objective: Evaluate the shoulder isokinetic strength of high-level female water polo players.
Methods: Two groups were compared: a control group of noncompetitive females (n=10), and members of the French women's national water polo (n=18). Isokinetic measurements focused on the shoulder internal rotators (IR) and external rotators (ER), the evaluations were realized at 60°·s-1 and 240°·s-1 in the concentric mode and at 60°·s-1 in the eccentric mode. Agonist-antagonist ratios (ER/IR) were calculated using the same speed and contraction mode for the agonist and antagonist muscle groups and the mixed ratio, combining peak torque (PT; N·m) of the ER in the eccentric mode at 60°·s-1 and PT of the IR in the concentric mode at 240°·s-1, was calculated.
Results: In concentric contraction, the PT of IR of the polo players was stronger than controls (P<0.05). In eccentric contraction the PT of ER were greater in water polo players (P<0.05). For the water polo players, a difference between both sides was observed when comparing the PT at 60°·s-1 (P<0.05). No significant difference was found through the agonist-antagonist ratios between the dominant and the nondominant shoulders in both groups. Some players exhibit an altered mixed ratio.
Conclusion: Intensive engagement in playing water polo will lead to an asymmetry in terms of force, with a dominance of the internal rotors of the dominant shoulder.
© Copyright 2019 Science & Sports. Elsevier. Kaikki oikeudet pidätetään.
Aiheet: | vesipallo naispuolinen olkapää momentti biomekaniikka staattinen |
---|---|
Aihealueet: | biologiset ja lääketieteelliset tieteet urheilukilpailut |
Tagging: | isometrisch |
DOI: | 10.1016/j.scispo.2018.10.003 |
Julkaisussa: | Science & Sports |
Julkaistu: |
2019
|
Vuosikerta: | 34 |
Numero: | 2 |
Sivuja: | 82-87 |
Julkaisutyypit: | artikkeli |
Kieli: | englanti (kieli) |
Taso: | kehittynyt |