肩の広がりはこれで決まる｜三角筋中部を最速でデカくする最強種目

Shoulder width is determined by the middle deltoid muscle. Many people think they are doing side raises correctly, but in reality, the load is shifting to the trapezius and anterior deltoid muscles. This will prevent shoulder width from developing, no matter how many years you train. This video explains the fastest way to build shoulder width, based on the latest scientific data. • Why your shoulders aren't widening • The fact that the deltoid muscle is divided into 7 parts, not 3 • The correct side raise technique to maximize the middle deltoid • The causes of and correction of the load shifting to the trapezius and anterior deltoid muscles • Weight vs. Reps: Which should you focus on? • Dumbbell vs. Cable exercises • The most efficient training frequency Understanding this will dramatically improve the efficiency of your shoulder training. Those who haven't seen progress before should especially notice the effects. 0:00 Introduction 0:34 Anatomical Shoulder Width 4:22 Absolute Requirements for Developing Shoulder Width 5:03 Don't Let the Muscles Move to the Trapezius 7:16 Don't Let the Muscles Move to the Anterior Deltoid 9:35 Progressive Overload 11:23 The Best Exercise for Training the Middle Deltoid