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Abstract

International Journal of Exercise Science 12(4): 666-690, 2019. Resistance training (RT) is recognized as an efficient method to improve muscle strength, power, hypertrophy; all are fundamental components of functional health and quality of life. Variables of RT such as volume, intensity, density, rest interval, duration, exercise order and selection, training frequency, and periodization models (i.e. linear periodization (LP), reverse linear periodization (RLP), block periodization (BP), and nonlinear periodization (NLP): undulating periodization (UP) and weekly undulating periodization (WUP)) are manipulated to potentiate musculoskeletal adaptations. The aim of the present study was to conduct a systematic review of studies comparing different periodization models on morphofunctional capacity in adults with different levels of physical activity. Databases from Ebsco, PubMed and Web of Science were searched between January 2007 and June 2017 using the following descriptors: RT; strength training; LP; UP; daily UP; NLP. From the 4337 articles found, 11 met the inclusion criteria. The mean number of sets in each RT model was 3 ± 1 for both (LP and UP), mean repetitions used was 10 ± 5, and the mean inter-set rest interval was 2 ± 1 minutes . The mean number of exercises was 7 ± 3 with training duration ranging from 45 to 90 minutes. The number of sets, repetitions, rest interval, and load intensity were minimally detailed in 12% of articles evaluated. In conclusion, RT programs that used LP and UP presented discrepant results, which precludes a consensus at this time. Most characteristics and differences between studies reported here should be used in future experimental designs to improve our understanding about periodization models.

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