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Pro
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Against

Lifters who did a medium amount of weightlifting exercises for 10 weeks got stronger in their main lifts than those who did either much less or much more — especially in the snatch, where the medium group improved the most.

Scientific Claim

Moderate-volume resistance training (2,481 repetitions over 10 weeks) results in greater strength gains in the snatch, clean & jerk, and squat exercises among experienced junior weightlifters compared to low-volume (1,923 repetitions) or high-volume (3,030 repetitions) training, with the snatch showing the most significant advantage over low volume (6.1% vs. 3.7% increase, p = 0.015).

Original Statement

The MVG showed a significant increase for the Sn, C&J, and Sq exercises (6.1, 3.7, and 4.2%, respectively, p < 0.01), whereas in the LVG and HVG, the increase took place only with the C&J exercise (3.7 and 3%, respectively, p < 0.05) and the Sq exercise (4.6%, p < 0.05, and 4.8%, p < 0.01, respectively). The increase in the Sn exercise for the MVG was significantly higher than in the LVG (p = 0.015). Calculation of effect sizes showed higher strength gains in the MVG than in the HVG or LVG.

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

probability

Can suggest probability/likelihood

Assessment Explanation

The study is an RCT with randomization, permitting causal language under GRADE rules. However, blinding is unknown and outcomes are limited to strength — 'probability' verb strength is conservative and appropriate given potential performance bias.

More Accurate Statement

Moderate-volume resistance training (2,481 repetitions over 10 weeks) may result in greater strength gains in the snatch, clean & jerk, and squat exercises among experienced junior weightlifters compared to low-volume (1,923 repetitions) or high-volume (3,030 repetitions) training, with the snatch showing the most significant advantage over low volume (6.1% vs. 3.7% increase, p = 0.015).

Evidence from Studies

Supporting (1)

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This study found that weightlifters who did a medium amount of lifting got stronger in their main lifts—especially the snatch—better than those who did too little or too much, proving that more isn’t always better.

Contradicting (0)

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No contradicting evidence found