AFAA Personal Trainer Certification Practice Exam

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Which plane is associated with flexion and extension movements?

Horizontal Plane
Frontal Plane
Sagittal Plane
Coronal Plane

The correct answer is: Sagittal Plane

The plane associated with flexion and extension movements is the sagittal plane. This plane divides the body into right and left halves and is oriented vertically. In this plane, movements such as raising and lowering an arm or bending and straightening a knee occur in a forward and backward direction. Flexion refers to decreasing the angle between body parts, while extension increases the angle, both of which primarily take place in the sagittal plane. Understanding the role of the sagittal plane in these movements is crucial for designing effective training programs that emphasize these actions, thereby facilitating a comprehensive approach to fitness and rehabilitation.