Bone density is not a physiological difference between men and women that can affect athletic performance. Men and women have similar bone densities, and this does not impact their athletic abilities.

Testosterone is the primary hormone responsible for the development of male secondary sexual characteristics, such as increased muscle mass, facial hair, and a deep voice.

Menstruation is the process by which women's bodies prepare for pregnancy. It involves the shedding of the lining of the uterus and the release of an egg from the ovary.

There is no evidence to support the stereotype that female athletes are more likely to get injured than male athletes. In fact, some studies have shown that female athletes may be less likely to get injured than male athletes.

Hyperandrogenism is the condition in which a female athlete has high levels of testosterone. This can lead to the development of male secondary sexual characteristics, such as increased muscle mass, facial hair, and a deep voice.

Differences in physical ability are not a factor that contributes to the gender gap in sports participation. In fact, research has shown that there is no significant difference in physical ability between men and women.

Metabolism is the process by which the body converts food into energy. It involves a series of chemical reactions that break down food molecules and release energy.

Type III muscle fibers do not exist. There are only three types of muscle fibers: Type I, Type IIa, and Type IIb.

VO2 max is the maximum amount of oxygen that the body can use during exercise. It is a measure of cardiovascular fitness.

Oxidative is not a type of energy system. The three main types of energy systems are aerobic, anaerobic, and glycolytic.

Lactate threshold is the point at which the body begins to produce lactate faster than it can be removed. This is a measure of anaerobic fitness.

Periodization is not a type of training method. It is a way of organizing training over time to optimize performance.

Adaptation is the process by which the body adapts to exercise. It involves a series of physiological changes that allow the body to perform better.

Concussion is not a type of injury that can occur during exercise. It is a type of head injury that can occur as a result of a blow to the head.

Recovery is the process by which the body recovers from exercise. It involves a series of physiological changes that allow the body to return to its pre-exercise state.