At a recent IMMDA (International Marathon Medical Directors Association) meeting: March 2016 Phoenix, AZ USA we discussed:
- A 33-year-old male running a half-marathon dropped at the 12-mile mark, 3:10 into his race. The morning of the race, he had drunk two energy drinks and a grande coffee, and used two caffeinated gels. Cardiac catherization revealed a small lesion (less than 20%) but otherwise clean coronaries.
- A 42-year-old woman running a marathon dropped at the 24.5-mile mark, 4:10 into her run. She drank two large coffees and had three caffeinated gels. Her cardiac cath also showed clean coronaries.
- A 26-year-old male also running a marathon dropped at the 25.5-mile mark, 3:25 into his run. He had taken two caffeine pills plus coffee the morning of his race, and also had clean arteries on cardiac cath.
More cases were discussed. We also noted that the press always goes to the deaths at these events, not to the many more numerous successful resuscitations. And with these successful resuscitations, we can interview the patient and find out what they did that might have contributed to their collapse.
More and more of these runners have clean arteries and report having consumed more than the 200 mg recommended limit of caffeine (that is the amount in about two cups of diner coffee.)
Coincidence? We think not.
IMMDA is finishing a research project to examine this question as well as a “code rate” of how many people actually are successfully resuscitated per number entered.
Meanwhile, I am preaching to all of you running a marathon or half-marathon: There is no downside to limiting caffeine to less than 200mg on days of a long run or race of 10-K or more.
Tell your friends. Get the word out. Please. Until we know more, it just seems to be the right thing to do
And stay tuned: next IMMDA meeting is October 15, 2016 where results will be presented!
Lewis G. Maharam, MD, FACSM is one of the world’s most extensively credentialed and well-known sports health experts. Better known as Running Doc™, Maharam is the author of “Running Doc’s Guide to Healthy Running” and past medical director of the NYC Marathon and Rock ‘n’ Roll Marathon series. He is Medical Director of the Leukemia & Lymphoma Society’s Team in Training program. He is also past president of the New York Chapter of the American College of Sports Medicine. Learn more at runningdoc.com.