Post-activation performance enhancement (PAPE) is a widely described phenomenon, but the majority of studies tend to evaluate the response of various parameters of a conditioning activity (CA) on the same explosive exercise. The aim of this study was to evaluate the PAPE response of the same CA—trap bar deadlift with an accommodating resistance—on jump height in two different jumping tests: squat jump (SJ) and countermovement jump (CMJ). Study participants included twelve elite volleyball players (age 23 ± 2 years; body height, 194.7 ± 5.9 cm; body mass, 89.8 ± 7.9 kg; body fat, 14.7 ± 3.7%) experienced in resistance training (relative 1RM of a trap bar deadlift with accommodating resistance 1.92 ± 0.12 kg/body mass). Each participant performed tests under four conditions: two conditions for both SJ and CMJ—experimental with CA and control without CA. Jumps were performed at the baseline and 90 s after CA. The protocol did not increase jump power significantly in either SJ or CMJ. However, individual analysis showed that more participants responded positively to the CA in SJ (73%) than CMJ (50%), implying that PAPE response may depend on the similarity of the muscle-type contraction between CA and an explosive exercise.
Background Post-activation potentiation performance (PAPE) is a physiological phenomenon that has been studied numerously but the researchers are still seeking for the optimal application methods. The accommodating resistance was found to be an effective training method to acutely enhance subsequent explosive performance. The purpose of this study was to evaluate the effects of performing a trap bar deadlift with accommodating resistance on squat jump (SJ) performance with different rest intervals (90, 120, 150s). Methods The study had a cross-over design and fifteen strength-trained males (age 22.9 ± 2.1 years; body height 182 ± 6.5 cm; body mass: 80.4 ± 9.8 kg; body fat 15.8 ± 7.0%; BMI 24.1 ± 2.8; lean body mass 67.5 ± 8.8 kg) participated in one familiarization, three experimental and three control sessions within three weeks. The conditioning activity (CA) used in the study was a single set of 3 repetitions of a trap bar deadlift at 80% 1RM with approximately 15% 1RM of an elastic band. The SJ measurements were performed at the baseline and post-CA after 90 or 120 or 150s. Results The 90s experimental protocol significantly improved (p < 0.05, effect size 0.34) acute SJ performance whereas 120 and 150 s experimental protocols did not significantly improve performance. The following tendency was observed - the longer the rest interval, the smaller the potentiation effect; p value for 90s (0.046), 120s (0.166), 150s (0.745). Conclusions A trap bar deadlift with accommodating resistance and 90s rest interval can be used to acutely enhance jump performance. A 90s rest interval was found to be optimal to enhance subsequent SJ performance, but the potential rest interval extension to 120s could also be taken by strength and conditioning coaches as the PAPE effect is highly individual. However, exceeding the rest interval to more than 120s may not be effective in optimising the PAPE effect.
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