https://www.acacamps.org/article/camping-magazine/developmentally-appropriate-sports-skills-three-four-year-olds-0

Many campers as young as three and four years of age engage in many of the same sports activities as their older counterparts. Sports such as soccer, tennis, basketball, and hockey are routinely part...

https://www.acacamps.org/resources/directions-youth-development-outcomes-camp-experience

Research done to determine the outcomes of the camp experience as expressed by parents and children.