This video discusses how to effectively train deltoids for growth, focusing on understanding muscle fiber orientation and optimizing exercise selection. Ryan Humiston explains why many common exercises might be less effective and introduces science-backed methods and exercises to maximize delt development. He also shares a personal anecdote about a calf injury and his rapid recovery process.
The speaker discusses lats in the context of shoulder training because the latissimus dorsi muscle has a similar function and moment arm to the posterior deltoid in certain movements. This overlap means that lats can often take over or dominate the load during exercises intended for the rear delts, hindering their effectiveness. Understanding this interplay is crucial for optimizing posterior delt development. Additionally, the speaker explains how understanding the mechanics of lat involvement can inform better lat training itself.
