<a href="http:&#x2F;&#x2F;journals.plos.org&#x2F;plosone&#x2F;article?id=10.1371&#x2F;journal.pone.0154075" rel="nofollow">http:&#x2F;&#x2F;journals.plos.org&#x2F;plosone&#x2F;article?id=10.1371&#x2F;journal....</a><p>In the paper the article references, it seems that the sample size is small . n&lt;=9 in all the three groups (Sprint interval training, Moderate intensity , Control) in the test. This should make it really hard to generalize this result across the population , no?