Effect of Volume on Eccentric Overload–Induced Postactivation Potentiation of Jumps

Abstract

<jats:p><jats:italic><jats:bold>Purpose</jats:bold>:</jats:italic> To investigate the postactivation potentiation (PAP) effects of different eccentric overload (EOL) exercise volumes on countermovement-jump (CMJ) and standing-long-jump (LJ) performance. <jats:italic><jats:bold>Methods</jats:bold>:</jats:italic> In total, 13 male university soccer players participated in a crossover design study following a familiarization period. Control (no PAP) CMJ and LJ performances were recorded, and 3 experimental protocols were performed in a randomized order: 1, 2, or 3 sets of 6 repetitions of flywheel EOL half-squats (inertia = 0.029 kg·m<jats:sup>2</jats:sup>). Performance of CMJ and LJ was measured 3 and 6 minutes after all experimental conditions. The time course and magnitude of the PAP were compared between conditions. <jats:italic><jats:bold>Results</jats:bold>:</jats:italic> Meaningful positive PAP effects were reported for CMJ after 2 (Bayes factor [BF<jats:sub>10</jats:sub>] = 3.15, moderate) and 3 (BF<jats:sub>10</jats:sub> = 3.25, moderate) sets but not after 1 set (BF<jats:sub>10</jats:sub> = 2.10, anecdotal). Meaningful positive PAP effects were reported for LJ after 2 (BF<jats:sub>10</jats:sub> = 3.05, moderate) and 3 (BF<jats:sub>10</jats:sub> = 3.44, moderate) sets but not after 1 set (BF<jats:sub>10</jats:sub> = 0.53, anecdotal). The 2- and 3-set protocols resulted in meaningful positive PAP effects on both CMJ and LJ after 6 minutes but not after 3 minutes. <jats:italic><jats:bold>Conclusion</jats:bold>:</jats:italic> This study reported beneficial effects of multiset EOL exercise over a single set. A minimum of 2 sets of flywheel EOL half-squats are required to induce PAP effects on CMJ and LJ performance of male university soccer players. Rest intervals of around 6 minutes (&gt;3 min) are required to maximize the PAP effects via multiple sets of EOL exercise. However, further research is needed to clarify the optimal EOL protocol configurations for PAP response.</jats:p>

Implementing Flywheel (Isoinertial) Exercise in Strength Training: Current Evidence, Practical Recommendations, and Future Directions

“…Although the scientific evidence on the PAPE effects of flywheel exercises is relatively limited, a few practical recommendations can be provided for the correct methodological implementation of flywheel exercises as PAPE protocols. Therefore, protocols designed as multiple sets (e.g., 2-3 sets) are recommended to obtain acute enhancements on athletic performances (Beato et al, 2020;de Keijzer et al, 2020). (c) Rest interval: The time-course of the flywheel exercise PAPE effects seems to be consistent with the gravitational loadingbased PAPE literature (Beato et al, 2020).…”

Intra- and Inter-Limb Strength Asymmetry in Soccer: A Comparison of Professional and Under-18 Players

“…Familiarisation sessions were not performed by players because the isokinetic test used in this study was part of the normal testing routine of the club and, therefore, players had already familiarised themselves with the instrument. Players avoided any vigorous training for the two days preceding the testing session and were instructed to avoid consuming any known stimulant (e.g., caffeine) or depressant (e.g., alcohol) substances for 24h before testing and, as well, were instructed to rehydrate ad libitum [ 27 ].…”

Does Handball Throwing Velocity Increase After an Eccentric Overload-Induced Postactivation Potentiation?

“…Regarding the volume used in the present study, the three repetitions performed during the EO protocol implied the same volume that the unique upper-body EO conditioning protocol found in the literature (Cuenca-Fernández et al, 2018). However, derived from the low strength level of the participants in the present study, it is possible that multiple-instead of a single-set of conditioning activity would have been more appropriate (de Keijzer, McErlain-Naylor, Dello-Iacono and Beato, 2020;Seitz and Haff, 2015).…”