Creatine adds strength for older women, especially past 24 weeks

Sarcopenia, the age-related loss of muscle strength and mass, erodes quality of life and weighs particularly heavily on older women. Resistance training is the best established countermeasure, and accumulating research suggests creatine supplementation can amplify its effects on strength and muscle compared with training alone. Most of that evidence, though, comes from broader populations, and some findings suggest sex differences may change how well creatine works. This review asked a narrower and more useful question: does adding creatine to resistance training actually help older women specifically?

The authors searched nine electronic databases for randomised controlled trials that combined creatine supplementation with resistance training in older females and compared the results against training with placebo. Ten trials with a combined 211 participants qualified for the review. The outcomes of interest were upper-body strength, lower-body strength and measures of muscle mass. Sub-analyses then split the trials by duration, separating programmes that ran for 24 weeks or longer from shorter ones, to see whether time on the programme changed the results.

Overall, creatine significantly improved upper-body strength across seven studies with 142 participants. Lower-body strength and measures of muscle mass showed no significant overall effect. Duration changed the picture: in trials lasting at least 24 weeks, both upper-body strength (four studies, 97 participants) and lower-body strength (four studies, 100 participants) improved with creatine compared with placebo. The authors conclude that older women supplementing with creatine experience significant strength gains, especially when resistance training lasts at least 24 weeks, while flagging that the evidence base is limited and higher-quality studies are needed.

This extends the creatine literature into a group it had largely overlooked, since much of the prior work pooled sexes or focused on younger populations. It supports the broader finding that creatine augments resistance training gains, while complicating it in one respect: muscle mass did not shift here, so the strength benefit in older women is not clearly explained by added muscle. Whether longer or larger trials would reveal changes in mass remains open. It is also worth noting that two authors disclosed links to creatine industry research and advisory roles, which readers can weigh alongside the findings.

For older women weighing whether creatine is worth pairing with strength training, this is a reason to think the combination can add strength beyond what training alone provides, with the clearest gains appearing when programmes run 24 weeks or more. It also tempers expectations: measurable muscle mass did not change in these pooled trials. With 211 people across ten trials, the evidence is informative rather than definitive, and the authors themselves want stronger studies before treating the question as settled.