Research Information System
ISOKINETICS AND EXERCISE SCIENCE, vol.33, no.2, pp.161-170, 2025 (SCI-Expanded, Scopus)
Background: The current literature lacks comprehensive information on how load and muscle activation affect performance in resistance exercise-based PAPE interventions. These effects remain unclear, and observations from studies focusing on both muscle activation and performance outcomes are needed to resolve this critical gap. Objective: To examine the effects of PAPE interventions on maximum voluntary isometric contraction (MVIC) and muscle activation at different resistance loads via a coherence analysis approach. Methods: The first experimental visit included anthropometric assessment, baseline MVIC and one repetition maximum (1RM) tests. In the next two visits, each subject completed a 5-m warm-up and performed the PAPE protocol (high Load or moderate Load) after a 5-m passive rest period. After 7-m of passive transition phase, subjects performed the MVIC and sEMG was recorded during each MVIC. Results: We observed a significant load effect on peak force (p < 0.026). This difference was significant (p < 0.038) on the peak force output of the moderate load compared to the control condition, but not between the moderate and high load conditions (p < 1.000). We also observed that load had a significant effect on muscle activation (p < 0.001), and this effect was particularly significant in the high load condition (p < 0.001) compared to the control condition. Conclusion: The preliminary findings of the study show that in resistance-based PAPE interventions applied at different loads, the moderate load condition positively affects the force output, while muscle activation increases more significantly, especially at high loads.