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Resumen de Effect of Resistance Training Frequency on Neuromuscular Performance and Muscle Morphology After 8 Weeks in Trained Men

Felipe Alves Brigatto, Tiago Volpi Braz, Thamires Cristina da Costa Zanini, Moisés Diego Germano, Marcelo Saldanha Aoki, Brad J. Schoenfeld, Paulo Henrique Marchetti, Charles R. Lopes

  • The purpose of this study was to investigate the chronic effects of training muscle groups 1 day per week vs. 2 days per week on neuromuscular performance and morphological adaptations in trained men with the number of sets per muscle group equated between conditions. Participants were randomly assigned in 2 experimental groups: 1 session[middle dot]wk-1 per muscle group (G1, n = 10), where every muscle group was trained once a week with 16 sets or 2 sessions[middle dot]wk-1 per muscle group (G2, n = 10), where every muscle group was trained twice a week with 8 sets per session. All other variables were held constant over the 8-week study period. No significant difference between conditions for maximal strength in the back squat or bench press, muscle thickness in the elbow extensors, elbow flexors, or quadriceps femoris, and muscle endurance in the back squat and bench press performed at 60% 1 repetition maximum was detected. Effect size favored G2 for some outcome measurements, suggesting the potential of a slight benefit to the higher training frequency. In conclusion, both G1 and G2 significantly enhance neuromuscular adaptations, with a similar change noted between experimental conditions.


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