Does Post-Activation Performance Enhancement Occur During the Bench Press Exercise under Blood Flow Restriction?

Area of Science:

• Exercise Physiology
• Sports Science
• Biomechanics

Background:

• Investigating post-activation performance enhancement (PAPE) is crucial for optimizing training protocols.
• Blood flow restriction (BFR) is a training method that may influence PAPE effects.
• Understanding PAPE's interaction with BFR can inform strength and power development strategies.

Purpose of the Study:

• To evaluate the effects of PAPE during successive bench press (BP) sets under blood flow restriction (BFR) compared to a control condition.
• To analyze changes in power output and bar velocity to understand PAPE kinetics.

Main Methods:

• 10 strength-trained males participated in a randomized crossover study.
• Participants performed 3 sets of 3 repetitions of the BP exercise at 70% 1-repetition maximum (1RM) under both BFR and control (CONT) conditions.
• Peak power output (PP), mean power output (MP), peak bar velocity (PV), and mean bar velocity (MV) were measured.

Main Results:

• PAPE effects were evident in both BFR and CONT conditions, indicated by changes in PP and PV.
• Significant increases in PP and PV were observed in set 2 compared to set 1 for both conditions.
• Set 3 showed different kinetics between BFR and CONT, with significant differences in PP and PV delta values between conditions for set 3-set 2.

Conclusions:

• PAPE influences performance in successive bench press sets, both with and without blood flow restriction.
• The kinetics of PAPE differ between blood flow restriction and control conditions across successive sets.
• These findings highlight the nuanced effects of BFR on PAPE, suggesting differential adaptations in power output and velocity across sets.