What type of exercise could you perform to engage movements in the frontal plane?

Engaging movements in the frontal plane primarily involves exercises that allow for lateral or side-to-side movement, which is characterized by abduction and adduction motions. Side lunges are a perfect example of this. When performing a side lunge, the body moves laterally, which targets the adductors and opens up movement along the frontal plane.

In contrast, shoulder rotation is more of a movement that occurs in the transverse plane. Squats primarily involve movements in the sagittal plane, focusing on flexion and extension. Crunches, on the other hand, are generally performed in the sagittal plane as they engage the core muscles through bending forward.

Thus, side lunges specifically facilitate movement across the frontal plane, reinforcing lateral stability and strength, making them the correct exercise choice for this type of movement engagement.