PainSci summary of Schoenfeld 2018?This page is one of thousands in the PainScience.com bibliography. It is not a general article: it is focused on a single scientific paper, and it may provide only just enough context for the summary to make sense. Links to other papers and more general information are provided at the bottom of the page, as often as possible. ★★★★☆4-star ratings are for bigger/better studies and reviews published in more prestigious journals, with only quibbles. Ratings are a highly subjective opinion, and subject to revision at any time. If you think this paper has been incorrectly rated, please let me know.
Lead author Brad Schoenfeld summarizes the study like this: “Probably the biggest thing that’s gotten lost about our new study on [training] volume was the finding that training less than 45 mins a week produced the same strength and muscular endurance increases as training 5 times as much in resistance trained men. That’s kind of a big deal.”
It really is a big deal, which is partly why New York Times health writer Gretchen Reynolds covered the story. There was fierce criticism from some readers, but mostly concerning bodybuilding (muscle growth); study co-author James Krieger (and prolific blogger) responded extensively. For most people’s purposes, these results are reliable and meaningful, and consistent with many other similar studies.
original abstract†Abstracts here may not perfectly match originals, for a variety of technical and practical reasons. Some abstacts are truncated for my purposes here, if they are particularly long-winded and unhelpful. I occasionally add clarifying notes. And I make some minor corrections.
PURPOSE: The purpose of this study was to evaluate muscular adaptations between low-, moderate-, and high-volume resistance training (RT) protocols in resistance-trained men.
METHODS: Thirty-four healthy resistance-trained men were randomly assigned to 1 of 3 experimental groups: a low-volume group (1SET) performing 1 set per exercise per training session (n = 11); a moderate-volume group (3SET) performing 3 sets per exercise per training session (n = 12); or a high-volume group (5SET) performing 5 sets per exercise per training session (n = 11). Training for all routines consisted of three weekly sessions performed on non-consecutive days for 8 weeks. Muscular strength was evaluated with 1 repetition maximum (RM) testing for the squat and bench press. Upper-body muscle endurance was evaluated using 50% of subjects bench press 1RM performed to momentary failure. Muscle hypertrophy was evaluated using B-mode ultrasonography for the elbow flexors, elbow extensors, mid-thigh and lateral thigh.
RESULTS: Results showed significant pre-to-post intervention increases in strength and endurance in all groups, with no significant between-group differences. Alternatively, while all groups increased muscle size in most of the measured sites from pre-to-post intervention, significant increases favoring the higher volume conditions were seen for the elbow flexors, mid-thigh, and lateral thigh.
CONCLUSION: Marked increases in strength and endurance can be attained by resistance-trained individuals with just three, 13-minute weekly sessions over an 8-week period, and these gains are similar to that achieved with a substantially greater time commitment. Alternatively, muscle hypertrophy follows a dose-response relationship, with increasingly greater gains achieved with higher training volumes.
- “Single versus multiple sets of resistance exercise for muscle hypertrophy: a meta-analysis,” James W Krieger, Journal of Strength & Conditioning Research, 2010.
- “Single versus multiple sets of resistance exercise: a meta-regression,” James W Krieger, Journal of Strength & Conditioning Research, 2009.
- “Individual Differences: The Most Important Consideration for Your Fitness Results that Science Doesn’t Tell You,” James Krieger and Bret Contreras, Bretcontreras.com.
- “Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis,” Brad J Schoenfeld, Dan Ogborn, and James W Krieger, Journal of Sports Science, 2016.
- “Strength and hypertrophy adaptations between low- versus high-load resistance training: A systematic review and meta-analysis,” Brad J Schoenfeld, Jozo Grgic, Dan Ogborn, and James W Krieger, Journal of Strength & Conditioning Research, 2017.
Specifically regarding Schoenfeld 2018:
One article on PainScience.com cites Schoenfeld 2018 as a source:
- PS Strength Training Frequency — Less is more than enough: go to the gym less frequently but still gain strength fast enough for anyone but a bodybuilder
This page is part of the PainScience BIBLIOGRAPHY, which contains plain language summaries of thousands of scientific papers & others sources. It’s like a highly specialized blog. A few highlights:
- A Bayesian model-averaged meta-analysis of the power pose effect with informed and default priors: the case of felt power. Gronau 2017 Comprehensive Results in Social Psychology.
- The neck and headaches. Bogduk 2014 Neurol Clin.
- Agreement of self-reported items and clinically assessed nerve root involvement (or sciatica) in a primary care setting. Konstantinou 2012 Eur Spine J.
- Effect of NSAIDs on Recovery From Acute Skeletal Muscle Injury: A Systematic Review and Meta-analysis. Morelli 2017 Am J Sports Med.
- Association of Spinal Manipulative Therapy With Clinical Benefit and Harm for Acute Low Back Pain: Systematic Review and Meta-analysis. Paige 2017 JAMA.