![after effects keysmith after effects keysmith](https://i.pinimg.com/474x/48/2f/69/482f69a2bc20e9c562be268c2234e868--adobe-clouds.jpg)
No PAP effect in other participants was observed. In individual results, the 10 m sprint performance of five participants and 30 m sprint performance of two participants decreased in BS, EMS, or BS + EMS conditions compared with CON. The effect size was found to be trivial (ηp2: 0.13 for 10 m ηp2: 0.11 for 30 m). As a result, no significant difference was found in the 10 m (p = 0.13) and 30 m (p = 0.10) sprint performance between the preload protocols. Sprint times for 10 and 30 m were recorded for each condition. Participants rested passively for 7 min after preloads and performed the 30 m sprint test. Participants randomly performed PAP protocols (CON = no load, BS = 3 × 85% of 1 RM BS, EMS = 3 × weightless squat with electric current and BS + EMS = 3 × 85% 1 RM BS with electric current) on four different days with at least 48 h intervals. Sixteen male (age = 22.9 ± 2.3 years, body mass = 79.9 ± 13.8 kg, BS one-repetition maximum (1 RM) = 120.5 ± 17.3) amateur football and rugby players volunteered for this study. The purpose of this study was to examine the effect of simultaneous application of Smith machine back squats (BS) with electromyostimulation (EMS) on sprint performance.
![after effects keysmith after effects keysmith](https://i.pinimg.com/originals/ca/b0/24/cab02410201a414afc58d54c31914d2d.png)
PAP is usually evoked through heavy resistance, but many new methods are being suggested that acutely improve performance in post-activation potentiation protocols. Post-activation potentiation (PAP) is a phenomenon which can improve force performance executed after a previous conditioning activity.