Bacteria in the digestive tract can boost performance of athletes. The bugs in our gut affect our energy metabolism, making it easier to break down carbohydrates, protein and fiber. They are also involved in inflammation and neurological function.
The microbiome could be relevant for applications in endurance, recovery and mental toughness. Researchers collected fecal samples on a daily basis from athletes training for marathon, a week before and after the race. The researchers sequenced the genomes of the sampled bacteria, using computational metagenomic methods to figure out how many and what types of microbes inhabited the fecal samples.
When they compared the pre-race and post-race samples, the researchers found a sudden spike in the population of one particular type of bacteria after the marathon. This bug's natural function is to break down lactic acid. During intense exercise, the body produces more lactic acid than usual, which can lead to muscle fatigue and soreness.
Researchers discovered that the bug is very good at breaking down lactic acid in a test tube and remains viable after it passes through the digestive system of mice. The researchers are now feeding the bacteria to mice to measure its effects on lactic acid levels and fatigue.
This leads to discovery of a bacteria in ultramarathoners that can break carbohydrates and fiber which is useful during a 100-mile.
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