Clinical trial · Supplements / medicine · 22 Oct 2026
In 40 active adults in their twenties, one week of creatine raised 30-second cycling power and did not change two thinking tests
Source: Research in Sports Medicine
What the research found
Study (randomized, parallel groups). João Vitor Silva and colleagues report in Research in Sports Medicine (2026; 34(5): 575; DOI 10.1080/15438627.2026.2656695). Forty healthy, physically active omnivorous adults took part: 20 men, mean age 23 plus or minus 5 years, and 20 women, mean age 24 plus or minus 5 years. For one week they took either 20 grams a day of creatine monohydrate or a maltodextrin placebo. Stroop and trail-making tests came before and after a 30-second Wingate cycling test. Mean power rose from 526 watts (95 percent CI 510 to 542) to 570 watts (554 to 586), and peak power from 738 watts (684 to 791) to 797 watts (743 to 850). The paper reports no sex difference on those power changes. The thinking tests did not change with creatine, and the authors say practice on the tests may have hidden a small effect. One week is not a training plan. Not medical advice.
Evidence level: Clinical trial. This is among the stronger kinds of evidence, but one study rarely settles a question.
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