Post-activation performance enhancement of flywheel training on lower limb explosive power performance

Area of Science:

• Sports Science
• Exercise Physiology
• Biomechanics

Background:

• Post-activation performance enhancement (PAPE) is a phenomenon where a prior conditioning activity can transiently improve subsequent muscular performance.
• Flywheel training (FT) is a form of resistance exercise that utilizes inertial loads, offering a unique method to potentially elicit PAPE.

Purpose of the Study:

• To investigate the PAPE of flywheel training on lower limb explosive power, specifically the counter movement jump (CMJ) and 30m sprint.
• To examine the influence of different inertial loads (Light, Medium-Light, and Profound) on the magnitude and duration of PAPE.

Main Methods:

• A randomized crossover design involving 20 trained men.
• Participants performed CMJ and 30m sprint tests at baseline and at intervals (0, 4, 8, 12, 16 minutes) after FT with varying inertial loads or a control condition.
• Measurements included CMJ height and 30m sprint times.

Main Results:

• For CMJ, PAPE peaked at 4 minutes post-exercise and diminished by 12 minutes, with higher inertial loads (Profound) showing greater and earlier PAPE compared to Medium-Light.
• For the 30m sprint, significant PAPE was observed only with the Medium-Light inertial load, peaking at 4 minutes and subsiding by 8 minutes, primarily driven by improved 10-30m split times.
• PAPE for vertical explosive force increased with inertial load, while horizontal explosive force PAPE was not observed at the maximum load.

Conclusions:

• The inertial load significantly influences the PAPE response in lower limb explosive power.
• Optimal timing for eliciting PAPE from FT appears to be within 4-8 minutes post-exercise.
• FT can be a viable strategy for enhancing explosive power, but the load selection is critical for specific movement types (vertical vs. horizontal).