Sports Medicine

, Volume 48, Issue 5, pp 1285–1287 | Cite as

Author’s Reply to Souza et al: Comment on: “Volume for Muscle Hypertrophy and Health Outcomes: The Most Effective Variable in Resistance Training”

  • Vandré Casagrande Figueiredo
  • Belmiro Freitas de Salles
  • Gabriel S. Trajano
Letter to the Editor

Dear Editor,

We thank Souza et al. for their letter [1] and the opportunity to clarify some points raised by these authors on our manuscript [2].

Firstly, the point regarding intensity of load and “intensity of effort” seems out-of-place. We agree that intensity of load is not adequate to measure “intensity of effort” and vice versa, as they measure different parameters. While intensity of load is widely applied in the literature, since it is an objective, comparable and easily controlled variable, “intensity of effort” is subjective, difficult to control, and may introduce bias when comparing different studies [3]. Souza et al. [1] suggested that low volume but higher “intensities of effort” promote similar hypertrophy to high volumes, citing volitional failure (VF) and blood-flow restriction (BFR) as means to achieve that. However, VF has not been shown to be superior to non-failure for eliciting muscle adaptations [4, 5, 6]. Souza et al. cited Mitchell et al. [7] to suggest that...


Compliance with Ethical Standards


No sources of funding were used to assist in the preparation of this letter.

Conflict of interest

Vandré Casagrande Figueiredo, Belmiro Freitas de Salles and Gabriel Trajano declare they have no conflicts of interest relevant to the content of this letter.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Vandré Casagrande Figueiredo
    • 1
    • 2
  • Belmiro Freitas de Salles
    • 3
  • Gabriel S. Trajano
    • 4
  1. 1.University of Kentucky College of Health SciencesLexingtonUSA
  2. 2.Center for Muscle BiologyUniversity of KentuckyLexingtonUSA
  3. 3.Physical Education Post-Graduation ProgramUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
  4. 4.School of Exercise and Nutrition Sciences, Institute of Health and Biomedical InnovationQueensland University of TechnologyBrisbaneAustralia

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