AFAA Personal Trainer Certification 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 415

Which movement involves an extremity describing a circle (360 degrees)?

Flexion

Rotation

Extension

Circumduction

The movement that involves an extremity describing a circle, or a 360-degree arc, is known as circumduction. This complex motion combines several simpler movements—flexion, extension, abduction, and adduction—allowing the limb to move in a circular path. This type of movement is commonly observed at ball-and-socket joints, such as the shoulder and hip, where a complete circular motion is possible.

Circumduction is distinct because it does not simply return to a starting position like flexion or extension might; it allows for a sweeping motion that can vary in range and direction. Understanding circumduction is important for personal trainers, as it applies to various activities, including swimming, throwing, and other sports that require a full range of motion in an extremity.

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