Cardiovascular endurance, the capacity to sustain moderate activity involving large muscle groups, is important for athletic performance and health. Muscular strength, the maximum amount of force in a single contraction, is related to verical jump and other power events and preventing injuries. Muscular endurance, the capacity to repeat small muscle activities or specific movements such as a push-up, develops muscle mass and reduces the risk of high blood pressure. Flexibility, the amount of movement in a joint, defines quality of life. It is also important for athletes in developing power and grace.
Body composition is determined by measuring body fat.
High body fat is often related to low density lipoprotein, a risk factor for heart disease.