The Claim

Individuals who experience greater increases in muscle size and strength during resistance training tend to experience greater losses in these same measures during detraining, with observed negative correlations of r = −0.673 for biceps brachii muscle size and r = −0.488 for leg press strength, indicating an individual-level association between the magnitude of adaptation and deconditioning.

Source: Repeated Resistance Training Reveals the Reproducibility of Muscle Strength and Size Responses Within Individuals

What the research says

Supports is higher

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

Supports
55score
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

If you gain more muscle and strength when working out, you might also lose more when you stop — your gains and losses seem to go hand in hand.

See the scientific wording

Individuals who gain more muscle size and strength during resistance training also tend to lose more during detraining, with negative correlations of r = −0.673 for biceps brachii size and r = −0.488 for leg press strength, suggesting that the rate of adaptation and deconditioning are linked within individuals.

What the research says

1 study
  1. Study: Repeated Resistance Training Reveals the Reproducibility of Muscle Strength and Size Responses Within Individuals

    People who gained the most muscle and strength during training tended to lose the most when they stopped, which is exactly what the study found.

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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