Frequency: The Overlooked Resistance Training Variable for Inducing Muscle Hypertrophy?
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The principle of progressive overload must be adhered to for individuals to continually increase muscle size with resistance training. While the majority of trained individuals adhere to this principle by increasing the number of sets performed per exercise session, this does not appear to be an effective method for increasing muscle size once a given threshold is surpassed. Opposite the numerous studies examining differences in training loads and sets of exercise performed, a few studies have assessed the importance of training frequency with respect to muscle growth, none of which have tested very high frequencies of training (e.g., 7 days a week). The lack of studies examining such frequencies may be related to the American College of Sports Medicine recommendation that trained individuals use split routines allowing at least 48 h of rest between exercises that stress the same muscle groups. Given the attenuated muscle protein synthetic response to resistance exercise present in trained individuals, it can be hypothesized that increasing the training frequency would allow for more frequent elevations in muscle protein synthesis and more time spent in a positive net protein balance. We hypothesize that increasing the training frequency, as opposed to the training load or sets performed, may be a more appropriate strategy for trained individuals to progress a resistance exercise program aimed at increasing muscle size.
KeywordsResistance Training Resistance Exercise Muscle Group Muscle Hypertrophy Muscle Growth
Compliance with Ethical Standards
No sources of funding were used to assist in the preparation of this article.
Conflict of interest
Scott Dankel, Kevin Mattocks, Matthew Jessee, Samuel Buckner, J. Grant Mouser, Brittany Counts, Gilberto Laurentino, and Jeremy Loenneke have no conflicts of interest relevant to the content of this review.
- 2.Alway SE, Grumbt WH, Stray-Gundersen J, et al. Effects of resistance training on elbow flexors of highly competitive bodybuilders. J Appl Physiol. 1985;1992(72):1512–21.Google Scholar
- 6.Brook MS, Wilkinson DJ, Mitchell WK, et al. Skeletal muscle hypertrophy adaptations predominate in the early stages of resistance exercise training, matching deuterium oxide-derived measures of muscle protein synthesis and mechanistic target of rapamycin complex 1 signaling. FASEB J. 2015;29:4485–96.CrossRefPubMedGoogle Scholar
- 8.Morton RW, McGlory C, Phillips SM. Nutritional interventions to augment resistance training-induced skeletal muscle hypertrophy. Front Physiol. 2015;245. doi: 10.3389/fphys.2015.00245.
- 11.Mitchell CJ, Churchward-Venne TA, West DWD, et al. Resistance exercise load does not determine training-mediated hypertrophic gains in young men. J Appl Physiol. 1985;2012(113):71–7.Google Scholar
- 15.Ostrowski KJ, Wilson GJ, Weatherby R, et al. The effect of weight training volume on hormonal output and muscular size and function. J Strength Cond Res. 1997;11:148–54.Google Scholar
- 17.Fisher J. Beware the meta-analysis: is mutliple set training really better than single set training for muscle hypertrophy. J Exerc Physiol Online. 2012;15:23–30.Google Scholar
- 27.Schoenfeld BJ, Ogborn D, Krieger JW. Effects of resistance training frequency on measures of muscle hypertrophy: a systematic review and meta-analysis. Sports Med. doi: 10.1007/s40279-016-0543-8. Epub 21 Apr 2016.
- 37.Ogasawara R, Kobayashi K, Tsutaki A, et al. mTOR signaling response to resistance exercise is altered by chronic resistance training and detraining in skeletal muscle. J Appl Physiol. 1985;2013(114):934–40.Google Scholar
- 40.Kumar V, Atherton P, Smith K, et al. Human muscle protein synthesis and breakdown during and after exercise. J Appl Physiol. 1985;2009(106):2026–39.Google Scholar
- 42.Mitchell CJ, Churchward-Venne TA, Cameron-Smith D, et al. What is the relationship between the acute muscle protein synthesis response and changes in muscle mass? J Appl Physiol. 1985;2015(118):495–7.Google Scholar