The Claim

In resistance training novices, low energy intake leads to significant volume loss (−1.7% to −5.6%) in nonrecruited muscles, while high energy intake preserves muscle mass in these areas over a 10-week period.

Source: Evidence for Simultaneous Muscle Atrophy and Hypertrophy in Response to Resistance Training in Humans

What the research says

Supports is higher

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

Supports
39score
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

When people new to weightlifting don't eat enough calories, they actually lose muscle in body parts they aren't even working out. But if they eat enough food, their muscles stay the same size even in those untrained areas.

See the scientific wording

Resistance training novices with low energy intake experience significant volume loss in nonrecruited muscles (e.g., −1.7% to −5.6%), whereas those with high energy intake maintain muscle mass in these areas over a 10-week period.

What the research says

1 study

  1. Study: Evidence for Simultaneous Muscle Atrophy and Hypertrophy in Response to Resistance Training in Humans

    When doing resistance training, your body needs enough calories to build muscle. If you don't eat enough, your body actually shrinks muscles you aren't actively training to save energy for the ones you are, but eating enough prevents this loss.

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.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.