The Claim

In pre-conditioned older women aged 60 and above, consuming 35 grams of whey protein either immediately before or after resistance training three times per week for 12 weeks results in a 3.4–4.2% increase in skeletal muscle mass, an 8.1–8.3% improvement in muscular strength, and a 10.8–11.8% reduction in 10-meter walk time compared to placebo, indicating that protein timing around training is not critical for these outcomes in this population.

Source: Effects of Whey Protein Supplementation Pre- or Post-Resistance Training on Muscle Mass, Muscular Strength, and Functional Capacity in Pre-Conditioned Older Women: A Randomized Clinical Trial

What the research says

Supports is higher

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

Supports
76score
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 older women aged 60 and above who regularly perform resistance training, taking 35 grams of whey protein either before or after the workout three times a week for 12 weeks increases muscle mass by 3.4–4.2%, improves strength by 8.1–8.3%, and reduces 10-meter walk time by 10.8–11.8% compared to a placebo, regardless of whether the protein is taken before or after training.

See the scientific wording

In pre-conditioned older women aged 60 and above, consuming 35 grams of whey protein either immediately before or after resistance training three times per week for 12 weeks leads to a 3.4–4.2% increase in skeletal muscle mass, an 8.1–8.3% improvement in muscular strength, and an 10.8–11.8% reduction in 10-meter walk time compared to placebo, indicating that protein timing around training is not critical for these outcomes in this population.

Why this might work

When someone drinks whey protein, the body breaks it down into amino acids, especially leucine. Leucine turns on a molecular switch in muscle cells that tells them to build more protein. This happens whether the protein is taken before or after lifting weights. Over time, more muscle protein gets made, muscles get bigger and stronger, and walking faster becomes easier.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Effects of Whey Protein Supplementation Pre- or Post-Resistance Training on Muscle Mass, Muscular Strength, and Functional Capacity in Pre-Conditioned Older Women: A Randomized Clinical Trial

    For older women who already exercise, taking protein either before or after their workout gives the same muscle, strength, and walking speed benefits — it doesn’t matter which time they take it, as long as they take it.

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

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