The Claim

In sedentary adults, combining resistance exercise with daily whey protein supplementation at 1.5 g/kg body weight for four weeks increases muscle mass and peak torque at 60°/s more than resistance exercise alone.

Source: Correlation between physiological and biochemical variables during short term adequate protein intake combined with resistance exercise in sedentary adults

What the research says

Supports is higher

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

Supports
75score
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

Sedentary adults who do resistance training and take 1.5 grams of whey protein per kilogram of body weight daily for four weeks gain more muscle mass and strength in their leg muscles than those who do resistance training alone.

See the scientific wording

In sedentary adults, combining resistance exercise with daily whey protein supplementation at 1.5 g/kg body weight for four weeks likely increases muscle mass and strength more than resistance exercise alone, as evidenced by significant gains in muscle mass (p < 0.05) and peak torque at 60°/s (p < 0.001) in the supplemented group compared to no significant change in the placebo group.

Why this might work

When a person does resistance training and drinks a protein shake every day, the amino acids from the protein, especially leucine, signal the muscles to grow. This signal turns on a pathway that makes more muscle proteins and stops the body from breaking them down. At the same time, a growth factor called IGF-1 rises, which strengthens this signal. The muscles get bigger and stronger because they are building more protein than they are losing.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Correlation between physiological and biochemical variables during short term adequate protein intake combined with resistance exercise in sedentary adults

    When people who don’t exercise much start lifting weights and drink a protein shake every day with the right amount of protein, they build more muscle and get stronger than those who just lift weights without the shake.

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

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