The Claim

Creatine supplementation combined with resistance training in healthy adults aged 50 and older results in a small to moderate increase in lower limb strength (SMD = 0.29) and an increase in lean tissue mass (SMD = 0.27) when the intervention duration is 32 weeks or less; interventions longer than 32 weeks show no significant change in either outcome.

Source: The impact of creatine supplementation associated with resistance training on muscular strength and lean tissue mass in the aged: a systematic review and meta-analysis

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
65score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

In adults aged 50 and older, taking creatine while doing resistance training for 32 weeks or less increases lower limb strength and lean tissue mass. Longer training periods do not produce additional gains.

See the scientific wording

Creatine supplementation combined with resistance training likely improves lower limb strength by a small to moderate amount (SMD = 0.29) and increases lean tissue mass (SMD = 0.27) in healthy adults aged 50 and older, but only when the intervention lasts 32 weeks or less; longer durations show no significant benefit, suggesting a time-limited anabolic response.

Why this might work

Creatine builds up in muscle cells, helping them produce energy faster during hard workouts. This lets older adults lift heavier or do more reps, which stresses the muscles more. The extra stress turns on a growth signal in muscle cells that tells them to build more protein, making muscles bigger and stronger. This effect stops after about 32 weeks because the muscle cells stop responding to the signal.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: The impact of creatine supplementation associated with resistance training on muscular strength and lean tissue mass in the aged: a systematic review and meta-analysis

    Taking creatine with strength training helps older adults build a little more leg strength and muscle, but only if they stick with it for 32 weeks or less—after that, it doesn’t help any more.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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