Nausea & Exercise

Just wondering has anyone else experienced bad nausea during high-intensity activities such as sprinting due to ulcerative colitis. I don't think its to do with diet, fitness levels or medication as I have monitored these aspects closely and altered them where appropriate. So basically I'm wondering can the inflammation from ulcerative colitis cause the nausea? I recently had an upper GI endoscopy and all checked out fine so no problems with the stomach either.

I used to experience this, but I realized it was from smoking. When I quit, it went away. When I started again 9 years later, nausea during exercise was back. However, I also had nausea almost every morning for about a year back around when I was first diagnosed, and that I did attribute to a mild UC flare.

Sometimes running makes me nauseated because of an elevated heart for an extended period of time. Sometimes my UC makes me feel nauseated as well. Generally when my UC is very active I don't run as much or as fast, I save that for when I feel well. Interval training is often easier when I am flaring, even if it is just running short distances full out alternating with jogging/walking.