MBLEx Kinesiology Practice Test 2026 – Complete Exam Prep Resource

Strength training leads to muscle hypertrophy, which is the increase in the size of muscle fibers. During strength training, the muscles undergo stress, causing small tears in the muscle fibers. The body repairs these fibers by fusing them, resulting in an increase in the size and number of myofibrils, which are the contractile elements of muscle tissues. This process not only strengthens the muscle but also leads to an overall increase in muscle cross-sectional area, which is what we refer to as hypertrophy.

Additionally, strength training promotes the production of anabolic hormones like testosterone and growth hormone, which further facilitate muscle growth and recovery. This adaptation is essential for athletes and anyone engaged in resistance training, as larger muscle fibers can produce more force and contribute to improved athletic performance.