Influence of Varying Proximity-to-Failure on Muscular Adaptations and Repetitions-in-Reserve Estimation Accuracy in Resistance-Trained Individuals
Overview
Paper Summary
This study on resistance-trained individuals found no significant difference in muscle growth or strength gains between varying proximity to failure (RIR1-4) and consistently training close to failure (RIR1). However, varying proximity to failure did result in lower perceived exertion.
Explain Like I'm Five
Lifting weights until you're almost too tired to do another rep doesn't give better results if you already lift weights regularly. It might make your workouts less tiring at first.
Possible Conflicts of Interest
One author (BJS) is on the scientific advisory board for Tonal Corporation, a fitness equipment manufacturer.
Identified Limitations
Rating Explanation
The study employs a reasonable methodology and addresses a relevant question, but the small sample size, limited generalizability to trained individuals, and partly supervised nature of the training limit its impact. The disclosed conflict of interest with one author is noted but doesn't seem to directly compromise the study's integrity.
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