Daily supplementation with 10 grams of creatine monohydrate increases lean mass and muscle strength in middle-aged adults even without a structured exercise routine, according to a 12-week study published in the Journal of the International Society of Sports Nutrition and reported by German wave (DW). The findings demonstrate that non-exercising participants who took the supplement gained lean mass and improved their strength over the study period.
Study Findings on Active and Inactive Adults Taking Creatine
The 12-week study evaluated 64 healthy participants between the ages of 45 and 65, dividing them into exercise and non-exercise groups who randomly received either 10 grams of creatine monohydrate daily, divided into two doses of 5 grams, or a placebo, as reported by 24horas. Participants in the active group—who completed three weekly sessions of resistance and aerobic training alongside a daily caloric reduction of 300 to 500 calories—gained lean mass, reduced body fat, and improved their strength and muscular endurance. By contrast, the inactive group taking creatine gained lean mass and increased their strength without changing their physical activity levels. Neither active nor inactive groups experienced improvements in aerobic capacity, confirming that the compound targets muscle strength and power rather than cardiovascular endurance. But the finding does not demonstrate that taking creatine is sufficient to build muscle or that it can substitute for physical activity.
Dietary sources cannot match trial dosage levels
Dietary sources alone cannot match the dosage levels utilized in the trial. Naturally produced by the liver, kidneys, and pancreas from three amino acids—glycine, arginine, and methionine—creatine acts as a cellular energy buffer by increasing intramuscular phosphocreatine availability, which rapidly regenerates adenosine triphosphate (ATP) during high-energy demands, according to reporting by the UNQ Scientific News Agency.

Creatine builds lean mass to reduce body fat
Combining creatine supplementation with a weight-loss diet and exercise program yields a reduction in body fat percentage, according to the research findings detailed by German wave. However, Jason Mitchell, chief medical officer at healthcare company Geisinger, cautioned in the “Health vs Hype” podcast—as cited by German wave—that the supplement itself does not directly burn fat. Instead, taking creatine while performing resistance training builds lean body mass, which ultimately reduces overall body fat.
Elevated creatine levels may influence neurological performance
Beyond muscle tissue, researchers are examining the compound’s impact on cerebral processes. Because the brain accounts for roughly 20 percent of total bodily energy consumption despite representing only 2 percent of total body weight, researchers note that elevated systemic levels may influence neurological performance, according to data from the U.S. National Institutes of Health (NIH) cited by Infobae. Participants in the Texas A&M study underwent exploratory cognitive and memory tests, displaying favorable changes in processing speed and memory measurements regardless of whether they exercised, according to 24horas. Nevertheless, medical experts emphasize that these cognitive outcomes remain exploratory and do not establish a proven treatment or preventive measure for neurodegenerative conditions. Mitchell added that while there are “interesting” preliminary data on the effects of creatine for memory, they are “not conclusive” and “there is nothing to show improvements in cases of dementia or anything like that”.
What are the creatine study details?
What exact daily dose of creatine was used in the study?
Researchers administered 10 grams of creatine monohydrate daily, split into two 5-gram doses, to participants over a 12-week period, as reported by 24horas.
Who funded the research on middle-aged adults?
The study was funded through an unrestricted grant to the Texas A&M Foundation provided by the WoodNext Foundation, while Alzchem Group supplied the supplements and funded the homocysteine analyses, according to 24horas.

Does creatine substitute for regular physical activity or exercise?
No, medical authorities emphasize that while the supplement confers muscle mass and strength benefits during inactivity, it does not replace physical exercise or aerobic training, according to German wave.
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