Final answer:
The three maturational differences in athletes, in addition to anatomical size, are physiological, behavioral, and sexual dimorphism differences.
Step-by-step explanation:
In addition to anatomical size, there are three maturational differences in athletes, which include physiological, behavioral, and sexual dimorphism differences.
Physiological changes refer to the internal body functions and can include differences in muscle strength, reaction time, sensory abilities, and cardiac functioning. Behavioral changes encompass the psychological and social adjustments that may impact an athlete's performance, such as confidence and independence, as well as risks associated with substance abuse and early sexual activity. Lastly, sexual dimorphism relates to physical characteristics apart from reproductive organs that differ between males and females, significantly influencing athletic capabilities and outcomes.
Understanding these differences helps in tailoring training programs to individual needs, recognizing that male and female athletes may demonstrate different strengths and susceptibilities due to these maturational variances.