Mom, I had this problem when I was young. I was never a formal athlete like your son, but when I was young we had to do physical fitness tests periodically. I played sports for fun a lot, but again, I wasn't a serious athlete -- no real talent. But I could run all day and play sports all day without any problem despite living in a place that was really hot, dry, and severely polluted. But when we had to run the 600, and that's a short race, I always got sick to my stomach afterwards. As I got older and started running for exercise, I ran a lot farther with no problems. I realized the problem, for me, was psychological, not physiological. I got nervous about it because our gym teachers talked about how hard it was. Your son might have some physiological problem, who knows, but if he doesn't have this problem in training and only in competition, it could be nerves. A lot of the highest level athletes have this problem, though they usually get nauseous before competing, not during or after. Just a thought.
Mom, I had this problem when I was young. I was never a formal athlete like your son, but when I was young we had to do physical fitness tests periodically. I played sports for fun a lot, but again, I wasn't a serious athlete -- no real talent. But I could run all day and play sports all day without any problem despite living in a place that was really hot, dry, and severely polluted. But when we had to run the 600, and that's a short race, I always got sick to my stomach afterwards. As I got older and started running for exercise, I ran a lot farther with no problems. I realized the problem, for me, was psychological, not physiological. I got nervous about it because our gym teachers talked about how hard it was. Your son might have some physiological problem, who knows, but if he doesn't have this problem in training and only in competition, it could be nerves. A lot of the highest level athletes have this problem, though they usually get nauseous before competing, not during or after. Just a thought.