Impact of Training Frequency on Mechanical Output and Perceived Exertion of Resistance Training with Velocity Loss Monitoring.

This study investigated how different weekly resistance training frequencies affect mechanical output and perceived exertion under velocity loss (VL) monitoring when the total number of sets per week was fixed. Fourteen well-trained male subjects participated in a repeated-measures design in which all participants performed three training frequency conditions (four, three, or two sessions per week) in randomized order. Each condition involved 12 total sets of back squats at 80% one repetition maximum (1RM) with a 20% VL, the total training sets evenly distributed across sessions. The results indicated that increasing training frequency allowed for lower perceived exertion (p = 0.005). Furthermore, the frequency of four sessions per week did not compromise velocity output or repetition performed in the following sets for within-session comparison (p ≥ 0.125), whereas the other two frequencies resulted in compromised performance with increasing numbers of sets performed. The frequency of three sessions per week resulted in a significant decrease in the following set, as shown in the number of repetitions performed per set (N