The Claim

In overweight postmenopausal women undergoing weight loss, a high-protein diet (1.5 g/kg/day) is associated with greater maintenance of handgrip strength compared to a normal-protein diet (0.8 g/kg/day), while no significant differences are observed in balance, gait speed, or the Short Physical Performance Battery.

Source: Impact of Protein Intake during Weight Loss on Preservation of Fat-Free Mass, Resting Energy Expenditure, and Physical Function in Overweight Postmenopausal Women: A Randomized Controlled Trial

What the research says

Supports is higher

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

Supports
70score
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.

Correlation
1 study reviewed
In plain English

Among overweight women after menopause who are losing weight, those eating more protein maintain handgrip strength better than those eating less protein, but there is no difference in balance, walking speed, or overall physical performance scores.

See the scientific wording

In overweight postmenopausal women undergoing weight loss, a high-protein diet (1.5 g/kg/day) may help maintain handgrip strength compared to a normal-protein diet (0.8 g/kg/day), while no significant differences were observed in other measures of physical function such as balance, gait speed, or the Short Physical Performance Battery.

Why this might work

Eating more protein gives the body more building blocks to repair and keep muscle tissue, especially the fast-twitch fibers in the hands that control grip strength. This keeps the hand muscles from shrinking during weight loss, while other movements like walking or balancing rely on different muscle groups and systems that don't get the same benefit.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Impact of Protein Intake during Weight Loss on Preservation of Fat-Free Mass, Resting Energy Expenditure, and Physical Function in Overweight Postmenopausal Women: A Randomized Controlled Trial

    In overweight women over 50 losing weight, eating more protein helped keep their hand strength from getting weaker, but didn’t help them walk faster or balance better than eating the usual amount of protein.

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

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