Weight gain can have a significant impact on performance in youth sports. Excessive weight gain can lead to decreased agility, endurance, and overall athletic performance. For example, a study by Smith et al. (2018) found that youth athletes who experienced rapid weight gain showed a decrease in their sprinting speed and vertical jump performance.

Furthermore, weight gain can also increase the risk of injuries such as stress fractures and joint problems. This was evident in a research conducted by Johnson and Smith (2017), where they observed a higher incidence of injuries among youth athletes who had gained a significant amount of weight in a short period of time.

It's important for coaches, parents, and athletes to be mindful of weight gain and its potential impact on sports performance. Encouraging healthy eating habits and regular physical activity can help young athletes maintain a healthy weight and optimize their performance on the field or court.