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Gazzetta Medica Italiana Archivio per le Scienze Mediche 2013 January-February;172(1-2):25-30

language: English

Maximum repetition analysis in 1-RM different percentages: comparison between young and middle-aged men

Libardi C. A. 1, 2, Ferreira Dos Santos C. 3, Antunes M. 2, Conceição M. S. 2, Mendes Junior E. M. 2, Barros F. A. 2, Madruga V. A. 2, Chacon-Mikahil M. P. T. 2

1 School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil;
2 Exercise Physiology Laboratory, School of Physical Education, State University of Campinas, Campinas, Brazil;
3 Centre for Health Sciences, State University of Northern Paraná, Paraná, Brazil


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Aim: Repetition maximum (RM) performed in a certain percentage of 1-RM remains unclear in literature. The aim the study was to establish the number of RM performed in different percentages of 1-RM in young and middle-aged men in different exercises: leg press (LP), bench press (BP) and arm curl (AC).
Methods: Eight young (age: 21.00±2.20) and ten middle-aged men (age: 47.20±4.54), performed 1-RM test and three subsequent sessions on different percentages of 1-RM (60%, 80% and 90%).
Results: One-RM test presented significant high values on BP and AC (P<0.05) on middle-aged group. Comparing the number of RM performed on each exercise the significant differences (P<0.05) occurred among 60% of 1-RM: LP vs. BP and AC for young and middle-aged men; 80% of 1-RM: LP vs. BP and AC for young men and LP vs. AC for middle-aged men; 90% of 1-RM: LP vs. AC to middle-aged men.
Conclusion: The results indicate no difference on RM performed with different percentages of 1-RM between young and middle-aged men and the muscle mass involved during exercise can be decisive on number of RM performed for the same percentage.

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