ACSM Personal Trainer Certification Practice Exam

The lateral raise primarily works which muscle group?

1. Hamstrings

2. Quadriceps

3. Deltoid

4. Erector spinae

The correct answer is: Deltoid

The lateral raise primarily targets the deltoid muscle group, particularly the middle deltoids. This exercise involves lifting weights outward from the sides of the body, which effectively engages the shoulder muscles. The middle portion of the deltoid is primarily responsible for shoulder abduction, which is the movement performed during a lateral raise. While other muscle groups may assist or stabilize during the exercise, such as the upper trapezius for shoulder girdle stabilization or the supraspinatus as part of the rotator cuff, the main focus and effort come from the deltoids. Understanding the function of the deltoids in this movement is crucial for personal trainers when designing shoulder workouts and ensuring proper form to maximize muscle engagement and minimize injury risk.