The Claim

In resistance-trained female collegiate athletes, the consumption of 24 grams of whey protein or casein protein immediately before and after resistance training sessions over an eight-week period results in no significant differences in changes in body composition, muscle strength, or anaerobic performance, suggesting equivalent effectiveness of both protein types when consumed in equal per-dose amounts around training.

Source: The effect of resistance training combined with timed ingestion of protein on muscle fiber size and muscle strength.

What the research says

Supports is higher

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

Supports
60score
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

For female college athletes who lift weights, taking 24 grams of whey or casein protein before and after workouts for eight weeks leads to the same results in muscle, strength, and performance — so both types work just as well.

See the scientific wording

In resistance-trained female collegiate athletes, consuming 24 grams of whey or casein protein immediately before and after resistance training sessions for eight weeks produces no significant difference in changes in body composition, muscle strength, or anaerobic performance, indicating that both protein types are equally effective when consumed in equal doses around training.

What the research says

1 study
  1. Study: The effect of resistance training combined with timed ingestion of protein on muscle fiber size and muscle strength.

    The study gave female athletes either whey or casein protein around their workouts and found both worked equally well for building muscle, losing fat, and improving performance.

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

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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