piątek, 19 czerwca 2009

Nonlinear Periodization Maximizes Strength Gains in Split Resistance Training Routines.


Nonlinear Periodization Maximizes Strength Gains in Split Resistance Training Routines.

Monteiro AG, Aoki MS, Evangelista AL, Alveno DA, Monteiro GA, Piçarro ID, Ugrinowitsch C.

Department of Rehabilitation, Federal University of Sao Paulo-UNIFESP, Sao Paulo, Brazil; 2School of Arts, Sciences and Humanities, University of São Paulo, Sao Paulo, SP, Brazil; 3University City of Sao Paulo-UNICID, Sao Paulo, Brazil; and 4Department of Sport, School of Physical Education and Sport, University of São Paulo, Sao Paulo, SP, Brazil.

Monteiro, AG, Aoki, MS, Evangelista, AL, Alveno, DA, Monteiro, GA, Piçarro, IDC, and Ugrinowitsch, C. Nonlinear periodization maximizes strength gains in split resistance training routines. J Strength Cond Res 00(0): 1-6, 2009-The purpose of our study was to compare strength gains after 12 weeks of nonperiodized (NP), linear periodized (LP), and nonlinear periodized (NLP) resistance training models using split training routines. Twenty-seven strength-trained men were recruited and randomly assigned to one of 3 balanced groups: NP, LP, and NLP. Strength gains in the leg press and in the bench press exercises were assessed. There were no differences between the training groups in the exercise pre-tests (p > 0.05) (i.e., bench press and leg press). The NLP group was the only group to significantly increase maximum strength in the bench press throughout the 12-week training period. In this group, upper-body strength increased significantly from pre-training to 4 weeks (p < 0.0001), from 4 to 8 weeks (p = 0.004), and from 8 weeks to the post-training (p < 0.02). The NLP group also exhibited an increase in leg press 1 repetition maximum at each time point (pre-training to 4 weeks, 4-8 week, and 8 weeks to post-training, p < 0.0001). The LP group demonstrated strength increases only after the eight training week (p = 0.02). There were no further strength increases from the 8-week to the post-training test. The NP group showed no strength increments after the 12-week training period. No differences were observed in the anthropometric profiles among the training models. In summary, our data suggest that NLP was more effective in increasing both upper- and lower-body strength for trained subjects using split routines.

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