NSCF Certified Personal Trainer Exam 2025 – 400 Free Practice Questions to Pass the Exam

In the context of performing biceps and triceps exercises, the correct joint action at the shoulder is that there should be no joint movement. This means that while the primary muscles are actively engaged in flexing or extending at the elbow joint, the shoulder should remain stable and in a neutral position, without additional flexion, extension, or abduction.

For instance, during a bicep curl, the primary action focuses on the elbow moving through flexion, and the shoulder joint should not actively flex or extend; it remains static to isolate the biceps effectively. Similarly, in tricep exercises like pushdowns or extensions, the emphasis is on the extension of the elbow, with the shoulder held in place to avoid compensatory movements that could lead to inefficient muscle engagement or potential injury.

Maintaining a stable shoulder positioning allows for optimal performance of the primary movement and prevents unwanted strain in the shoulder region, ensuring that the correct muscles are being targeted throughout the exercise.