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Sports Medicine

, Volume 48, Issue 2, pp 491–494 | Cite as

Comment on: “Comparison of Periodized and Non-Periodized Resistance Training on Maximal Strength: A Meta-Analysis”

  • João Pedro Nunes
  • Alex S. Ribeiro
  • Brad J. Schoenfeld
  • Edilson S. Cyrino
Letter to the Editor

Dear Editor,

We read with interest the recent article published by Williams et al. [1], Comparison of Periodized and Non-Periodized Resistance Training on Maximal Strength: A Meta-Analysis, in which the authors aimed to compare the effect of periodized (PER) versus non-periodized (NP) resistance training (RT) on strength gain. The researchers analyzed changes in muscle strength measured by one repetition maximum (1 RM) test on the bench press, leg-press, and back squat exercises and observed that “periodized resistance training plans have a moderate effect on 1 RM [effect size (ES) = 0.43, 95% confidence interval (CI) 0.27–0.58] compared to non-periodized training plans.” This led them to conclude that, “… variation in training stimuli appears to be vital for increasing maximal strength.”

We commend the authors for conducting a rigorous meta-analysis with a sound methodology. However, while the reported data do in fact support a strength-related benefit for periodization, we believe...

Notes

Compliance with Ethical Standards

Funding

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

Conflict of interest

João Pedro Nunes, Alex S. Ribeiro, Brad J. Schoenfeld, and Edilson S. Cyrino 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 2017

Authors and Affiliations

  1. 1.Study and Research Group in Metabolism, Nutrition, and Exercise, Physical Education and Sport CenterLondrina State UniversityLondrinaBrazil
  2. 2.Center for Research in Health SciencesUniversity of Northern ParanáLondrinaBrazil
  3. 3.Exercise Science DepartmentCUNY Lehman CollegeNew YorkUSA

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