The Claim

After 8 weeks of resistance training, free-weight and machine-based resistance training methods result in similar reductions in joint discomfort in the upper and lower limbs among resistance-trained men.

Source: Free-Weight and Machine-Based Training Are Equally Effective on Strength and Hypertrophy: Challenging a Traditional Myth

What the research says

Supports is higher

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

Supports
38score
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

If you're already used to lifting weights, whether you use free weights or machines, you'll likely feel about the same amount of less joint pain in your arms and legs after 8 weeks of training.

See the scientific wording

Free-weight and machine-based resistance training lead to similar reductions in joint discomfort in the upper and lower limbs after 8 weeks of training in resistance-trained men.

What the research says

1 study

  1. Study: Free-Weight and Machine-Based Training Are Equally Effective on Strength and Hypertrophy: Challenging a Traditional Myth

    The study found that lifting weights with barbells and using machines both made joint pain in the arms and legs feel just as better after 8 weeks — so neither is worse than the other for reducing discomfort.

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.