Veillonella bacteria increased in some runners’ guts after a marathon, and may make a compound that might boost endurance, a mouse study suggests.
One difference between elite athletes and the rest of us might be in what hangs out in their guts.on a treadmill, researchers report June 24 in. These particular microbes seem to take lactate, pumped out by muscles during exercise, and turn it into a compound that may help with endurance.
In the study, researchers collected stool samples from 15 elite runners for five days before and after they ran in the 2015 Boston Marathon, and compared the samples’ microbial makeup with that of poop collected from 10 nonrunners. The runners’ samples showed a bump in the abundance of bacteria from the genusin a group of 87 ultramarathoners and Olympic trial rowers after a workout.
The work shows that “a single bout of exercise can have effects on your microbiome,” says Jeffrey Woods, an exercise physiologist at the University of Illinois at Urbana-Champaign. But he is skeptical of whether the improvement in the mice’s stamina is important, noting that the mice were tested in a series of short runs that “isn’t anything like the marathon run.” The researchers might have found other microbes at play if more stool samples had been studied, he says.
It’s not clear whether these microbes bloom after exercise in the vast majority of people who aren’t elite athletes. “It may be something that the average person may not normally experience,” Church says. But probiotics — pills or food supplements that are supposed to contain helpful bacteria — may be able to bring these microbes to the masses.
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