The Claim

Individual responses to resistance training in muscle size and strength are moderately reproducible across repeated training cycles following a detraining period, as evidenced by correlation coefficients of r = 0.697 for vastus lateralis muscle size, r = 0.761 for biceps brachii size, and r = 0.671 for leg press strength, indicating consistent individual response patterns across identical training programs.

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 respond really well (or not so well) to a weight training program, you’ll probably have a similar result if you do the exact same program again after taking a break.

See the scientific wording

Individual responses to resistance training in muscle size and strength are moderately reproducible when the same program is repeated after a detraining period, with correlation coefficients of r = 0.697 for vastus lateralis muscle size, r = 0.761 for biceps brachii size, and r = 0.671 for leg press strength, indicating that people who respond well (or poorly) in one training cycle tend to show similar responses in a subsequent identical cycle.

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 more muscle or strength the first time they did the workout tended to do the same the second time, and this study found the exact same patterns the claim talks about.

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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