AFAA Personal Trainer Certification 2025 – 400 Free Practice Questions to Pass the Exam

Eccentric training is often referred to as negative resistance training. This is because eccentric movements occur when a muscle lengthens under tension, which typically happens when the force exerted by the muscle is less than the resistance being applied. In this context, the term "negative" highlights the aspect of resistance that is greater than the muscle's ability to contract, leading to controlled lengthening of the muscle fibers during exercises.

This method is effective for building strength and muscle mass since it emphasizes the muscle's ability to handle resistance when stretching, which can enhance both performance and reduce the risk of injury. The other options do not accurately capture this process; for example, positive resistance training focuses on concentric movements where the muscle shortens, while isometric training involves static contractions without lengthening or shortening the muscle. Dynamic resistance training is a broader term that generally includes both concentric and eccentric actions but does not specifically highlight the unique aspects of eccentric training.