Background: Although the ingestion of total omega–3 fatty acids (omega–3) is positively related with muscular strength in older persons, little is known about the effect of omega–3 plasma levels on muscular function before and after exercise in young men. Moreover, omega–3 supplementation has a positive role in exercise-induced acute muscle damage. This study investigated the relationship between plasma omega–3 in the blood and promotion and preservation of muscle strength after eccentric contractions (ECCs) in young men. Methods: Thirty-two healthy young men participated in this study. We assessed plasma omega–3 level and the maximal voluntary contraction (MVC). Twenty-six out of them exercised 60 ECCs at 100% MVC. We measured the MVC torque, flexibility before and immediately after exercise, 1–5 days post exercise. Results: The levels of eicosapentaenoic acid (EPA) and EPA/arachidonic acid were positively associated with muscle strength (p < 0.05). Higher levels of omega–3 EPA and docosahexaenoic acid prevented the reduction in the MVC and limited joint flexibility after ECCs. Conclusions: The present study reveals that higher levels of EPA are important to promote muscle strength and preserve the strength loss after exercise.

中文翻译：

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剧烈运动后血浆二十碳五烯酸与肌肉力量和肌肉损伤有关

背景：尽管摄入的总Omega-3脂肪酸（Omega-3）与老年人的肌肉力量呈正相关，但对年轻男子运动前后Omega-3血浆水平对肌肉功能的影响知之甚少。此外，补充omega-3对运动引起的急性肌肉损伤具有积极作用。这项研究调查了年轻人血浆中ω-3血浆与离心收缩（ECCs）后肌肉力量的增强和保持之间的关系。方法：三十二名健康的年轻人参加了这项研究。我们评估了血浆omega-3水平和最大自愿收缩（MVC）。其中有26个以100％MVC的价格执行了60个ECC。我们测量了运动前和运动后1-5天的MVC扭矩，柔韧性。结果：p＜0.05）。较高的ω-3EPA和二十二碳六烯酸含量可防止MVC降低，并阻止ECC后的关节柔韧性。结论：本研究表明，较高水平的EPA对促进肌肉力量和保持运动后的力量损失很重要。