ACSM Personal Trainer Certification Practice Exam

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Prepare for the ACSM Personal Trainer Certification Test. Strengthen your skills with multiple choice questions, offering hints and explanations for each. Ace your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the nature of an isokinetic contraction?

Consistent muscle length with no movement
Variable force with accommodating speed
Constant tension with a specified range
Static hold without any movement

The correct answer is: Variable force with accommodating speed

An isokinetic contraction is characterized by variable force with accommodating speed. This type of contraction occurs when a muscle contracts at a constant speed throughout the entire range of motion, typically facilitated by specialized equipment that adjusts resistance based on the force the muscle generates. This means that as the individual exerts more force, the machine accommodates by providing more resistance, allowing for maximum effort at any point in the movement while maintaining a consistent speed. This is particularly beneficial in rehabilitation settings, where controlling the speed of contraction can help prevent injury while still promoting muscle strengthening. The uniqueness of isokinetic contractions lies in this ability to adapt resistance, making it effective for enhancing muscular strength and endurance through controlled speeds, which differs from other types of contractions such as isometric or isotonic.