| Titre : | Brazilian Jiu-Jitsu fighters present greatest rapid and maximal strength imbalances at extreme elbow angles (2021) |
| Auteurs : | Bruno Follmer ; Cassio Victora Ruas ; Rodolfo Andre Dellagrana ; Luis Antonio Pereira De Lima ; Ronei Silveira Pinto ; Fernando Diefenthaeler |
| Type de document : | Article |
| Dans : | Journal of Bodywork and Movement Therapies (Vol. 25, January 2021) |
| Article en page(s) : | p. 126-132 |
| Note générale : | doi:10.1016/j.jbmt.2020.11.013 |
| Langues: | Anglais |
| Descripteurs : |
HE Vinci Arts martiaux ; Coude ; Sport de combat et de défense |
| Mots-clés: | Taux de développement du couple ; Couple de pointe |
| Résumé : |
Background:
The performance of Brazilian jiu-jitsu (BJJ) fighters is dependent on rapid and maximal elbow strength actions. Appropriate strength balance between elbow flexors (F) and extensors (E) across the full joint range of motion may be required to decrease risk of injuries. Aim: To compare rapid and maximal elbow F/E strength balance through full range of motion in BJJ fighters. Materials and methods: Twenty-three male BJJ fighters (27.9 ± 4.6 years, 82.9 ± 10.9 kg, 174.5 ± 6.8 cm, and 15.3 ± 6.8% body fat) with 8.2 ± 6.5 years of practice volunteered to participate. Participants were tested for rate of torque development (RTD) and peak torque (PT) of elbow F and E at six angles (45°, 60°, 75°, 90°, 105°, and 120°; 0° = full extension). Rapid (F RTD/E RTD) and maximal (F PT/E PT) angle-specific torque (AST) ratios were calculated. Results: Rapid AST ratio at 45° (0.66 ± 0.18) and maximal AST ratio at 45° (0.91 ± 0.16) and 120° (0.88 ± 0.20) were significantly less than all other AST ratios at mid-point angles of elbow range of motion (p Conclusion: BJJ fighters present greater rapid and maximal strength imbalances at extreme-compared to mid-point angles of range of motion. Results may benefit coaches to develop strength exercises focusing on these specific angles to potentially reduce the risk of elbow injury and improve performance of BJJ fighters. |
| Disponible en ligne : | Oui |
| En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S136085922030228X#! |
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