Which of the following is NOT a purpose of strength training?

Strength training focuses on increasing muscle strength and endurance through various forms of resistance exercises. Its primary goals include enhancing physical performance in activities, improving self-concept by building confidence through increased strength, and decreasing the risk of injuries by strengthening muscles, tendons, and ligaments.

While strength training can lead to some improvements in flexibility as a secondary benefit, it is not specifically aimed at increasing flexibility as its primary purpose. Flexibility is typically developed through specific stretching exercises or flexibility training, which targets the range of motion in joints and muscles. Therefore, stating that increasing flexibility is a purpose of strength training is not accurate, as it does not capture the principal intentions behind strength training activities.