AFAA Personal Trainer Certification Practice Exam

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Study for the AFAA Personal Trainer Certification Exam. Engage with quizzes, flashcards, and multiple-choice questions. Prepare efficiently with hints and explanations to achieve certification success.

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

  1. Flexion

  2. Rotation

  3. Extension

  4. Circumduction

The correct answer is: 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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