A comparison of volume-equated knee extensions to failure, or not to failure, upon rating of perceived exertion and strength adaptations
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The present study aimed to compare the effects of repetition duration-, volume-, and load-matched resistance training to muscular failure (MMF) or not to muscular failure (NMF) on maximal voluntary isometric knee extensor strength. This design also allowed testing of the efficacy of “5×5” training. Nine recreationally active males (age, 21.4 ± 1.2 years; height, 1.79 ± 0.07 m; weight, 78.4 ± 7.1 kg) performed unilateral resistance training at 80% of maximal torque at 2×/week for 6 weeks. Using their nondominant leg, participants performed 5 sets of 5 repetitions (NMF). Using their dominant leg, participants performed 25 repetitions in as few sets as possible (MMF). All repetitions were performed at a pace of 2 s concentric, 1 s isometric pause, and 2 s eccentric with a 2-min rest interval between sets. Analyses identified significant pre- to post-intervention strength increases for both MMF and NMF, with effect sizes (ESs) of 2.01 and 1.65, respectively, with no significant differences between conditions (p > 0.05). Peak and mean ratings of perceived exertion (RPEs) were significantly higher for MMF compared with NMF conditions (p < 0.0001), and a tendency for significantly higher RPE values reported for later sets for the NMF condition. Total training time per session was significantly longer for NMF compared with MMF (p < 0.001). The present study suggests that in untrained participants, resistance training NMF produces equivocally the same strength increases as training to MMF when volume-matched. However, resistance training to MMF appears to be a more time-efficient protocol and may produce greater strength gains as indicated by a larger ES.
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There are a number of studies that report no additional muscle strength or hypertrophy benefits of training to repetition failure.
“However, there are a number of studies that report no additional muscle strength [93–98] or hypertrophy [96] benefits of training to repetition failure.”
From Minimalist Training: Is Lower Dosage or Intensity Resistance Training Effective to Improve Physical Fitness? A Narrative Review (2024) · cites this paper as [95]
The Strength results (page not available) report no significant difference in strength gains between training to failure and not to failure, supporting the strength portion of the claim. The Discussion (page not available) says future research should test whether hypertrophic adaptations are also similar; this study does not establish the hypertrophy portion. (LLM, conf=0.82)
Experimental — accuracy not yet measuredPerforming repetitions to momentary failure induces significantly higher ratings of perceived exertion, which probably would not be pleasurable or motivating for individuals who are not highly motivated to exercise.
“Performing repetitions to momentary failure induces significantly higher ratings of perceived exertion [95, 100], which probably would not be pleasurable or motivating for individuals who are not highly motivated to exercise.”
From Minimalist Training: Is Lower Dosage or Intensity Resistance Training Effective to Improve Physical Fitness? A Narrative Review (2024) · cites this paper as [95]
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- Authors
- Fisher, J. P., Blossom, D., & Steele, J.
- Affiliations
- Southampton Solent University (GB)
- Venue
- Applied Physiology, Nutrition, and Metabolism
- Publisher
- Canadian Science Publishing
- Published
- 2016-02
- Volume
- 41
- Issue
- 2
- Pages
- 168-174
- ISSN
- 1715-5312 (ISSN-L)
- 1715-5320
- OpenAlex
- W1910451926
- Cited by
- 41
- References
- 49
- Citations by year
- 2026: 1 · 2024: 4 · 2023: 3 · 2022: 2 · 2021: 10 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 10 · 2016: 3
- FWCI
- 5.14
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Locations
- Applied Physiology Nutrition and Metabolism (publishedVersion)
- PubMed (publishedVersion)
- TSpace (University of Toronto) (acceptedVersion)
- Topics
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
- Keywords
- resistance training, muscular failure, knee extension, isometric strength, rating of perceived exertion, training volume, training time efficiency, untrained men, strength adaptation
- MeSH terms
- Adaptation, Physiological, Physical Exertion, Humans, Knee, Male, Exercise, Weight-Bearing, Muscle Strength, Resistance Training, Young Adult
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