NSCF Certified Personal Trainer Practice Exam 2026 - Free Personal Trainer Practice Questions and Study Guide

The primary role of the latissimus dorsi muscle during exercises like pull-ups is shoulder extension. This muscle helps to pull the arms down towards the body, which is essential when performing a pull-up. During this movement, the latissimus dorsi contracts to extend the shoulder joint, enabling the body to be lifted upward toward the bar.

In addition to shoulder extension, the latissimus dorsi also plays a significant role in adduction and internal rotation of the shoulder. It's particularly engaged during pulling movements, making it a key muscle for exercises that target upper body strength, such as pull-ups. Understanding this function is crucial for personal trainers when designing exercise programs tailored to strengthening the back and enhancing overall pulling strength.