What does the term 'somatotype' refer to?

The term 'somatotype' refers to a method of classifying body types. This classification system categorizes individuals based on their physical build and composition, which is typically divided into three main types: ectomorph, mesomorph, and endomorph. Each somatotype reflects specific traits, such as bone structure, muscle mass, and body fat distribution, which can influence athletic performance and fitness levels. Understanding a person's somatotype can help in developing tailored training programs and nutritional strategies that align with their physical characteristics and goals.

The other options relate to different concepts, such as performance metrics, exercise classifications, or dietary plans, but they do not accurately define what somatotypes are.