NSCF Certified Personal Trainer Practice Exam 2025 - Free Personal Trainer Practice Questions and Study Guide

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What does the term 'muscle hypertrophy' refer to in resistance training?

Decrease in muscle size

Increase in muscle size

Muscle hypertrophy refers to the increase in muscle size that occurs as a result of resistance training or strength training. This process typically happens when the muscle fibers undergo stress from lifting weights, leading to microscopic damage. The body then repairs these fibers, resulting in an increase in their cross-sectional area. This is a very specific adaptation aimed at improving the muscle's ability to handle heavier loads, which is why muscle hypertrophy is a primary goal for many individuals engaged in strength training programs.

This increase in muscle size is a fundamental concept in resistance training, as it contributes to overall muscle development, improves body composition, and enhances physical performance in various activities. It's important to distinguish this from other terms such as muscle strength and muscle endurance, which are related but refer to the ability to exert force and sustain repeated contractions over time, respectively.

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Muscle strength

Muscle endurance

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