What component of physiological-related fitness is primarily concerned with body composition factors?

The component of physiological-related fitness that is primarily concerned with body composition factors is morphological fitness. This aspect focuses on the body's structure, including the proportions of lean mass (muscle, bone, organs) and fat mass. Understanding body composition is essential for assessing overall health and fitness, as it can influence metabolic rate, physical performance, and susceptibility to various diseases.

In contrasting components, bone integrity pertains to the health and density of bones, which relates to physical strength and injury prevention rather than body composition specifically. Metabolic fitness involves how efficiently the body can use energy and perform metabolic processes, which, while related to body composition, does not focus on the structural aspects of the body in the same direct way. Physical endurance refers to the ability to perform physical activities over an extended period, highlighting cardiovascular and muscular stamina rather than the distribution of body mass. Thus, morphological fitness is the most relevant in terms of understanding body composition factors.