Abstract
The combination of plyometric and resistance training (RT) is frequently used to
increase power-related adaptations. Since plyometric training is most effective
when athletes are in a well-rested state, the acute effect of RT on plyometric
performance should be carefully considered. Thus, 15 highly trained males
(23.1±3.5 yrs, 1.80±0.06 m,
79.1±7.9 kg) completed a load- and volume-matched velocity-based
RT session with 10% velocity loss (VL10) and traditional 1-repetition
maximum-based RT session to failure (TRF) in a randomized order. Repeated
sprints (5 × 15 m), countermovement jumps (CMJs), and drop jumps
(DJs) were measured before, immediately after, and 24 h after both
sessions. Lactate, heart rate, and perceived effort (RPE) were measured. Sprint,
CMJ, and DJ revealed significant interaction effects (rANOVA
p <0.001, ηp
2 ≥0.63).
Immediately afterward, sprint, DJ, and CMJ were less negatively affected
(p ≤0.03, SMD≥|0.40|) by VL10 vs. TRF.
Sprint and CMJ were already recovered 24 h post-testing and showed no
significant differences between TRF and VL10 (p ≥0.07,
SMD≤|0.21|). Twenty-four hours post-testing, DJs were
still reduced during TRF but already recovered during VL10
(p =0.01, SMD=|0.70|). TRF resulted in
higher lactate, heart rate, and RPE compared to VL10 (p ≤0.019,
η
p
2 ≥0.27,
SMD≥|0.68|). In conclusion, the non-failure-based VL10
impairs jump and sprint performance less than the failure-based TRF approach,
despite matched volume and intensity.
Key words vertical jump - plyometric - recovery - mean concentric velocity
