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Sports 2016, 4(2), 22;

The Acute Effects of Heavy Deadlifts on Vertical Jump Performance in Men

Center for Sport Performance, Department of Kinesiology, California State University, Fullerton, CA 92831, USA
Author to whom correspondence should be addressed.
Academic Editor: Eling Douwe de Bruin
Received: 28 December 2015 / Revised: 5 March 2016 / Accepted: 11 March 2016 / Published: 23 March 2016
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The purpose of this study was to investigate the effects of deadlifts as a postactivation potentiation stimulus on vertical jump performance. Fifteen men (age, 23.9 ± 4.2 years; height, 176.3 ± 8.6 cm; mass, 76.1 ± 16.3 kg) participated in the study. Participants visited the lab for three sessions, each separated by at least 48 h. One repetition maximum (1RM) in the deadlift was measured during the first visit. For Visit 2, participants performed one of two experimental sessions: a deadlift session or a control session. Participants performed a single maximal vertical jump (VJ; counter movement jump without an arm swing), then either performed five repetitions of the deadlift using 85% 1RM (deadlift session) or were told to stand still for ten seconds (control). Following either condition, participants performed single VJ at 15 s, 2, 4, 6, 8, 10, 12, 14, and 16 min post condition. Peak VJ height and peak ground reaction forces (pGRF) were measured using a force plate. For Visit 3, whatever condition was not administered at Visit 2 was performed. The results showed that VJ height was significantly lower 15 s following deadlifting (36.9 ± 5.1 cm) compared to the control condition (40.1 ± 4.6 cm). In addition, VJ height 15 s after the deadlift was lower than VJ height measured at minutes 2–16 following the deadlift. Performance of five repetitions of deadlifting did not affect pGRF. These results suggest that performing five repetitions of the deadlift exercise at 85% 1RM does not induce a postactivation potentiation (PAP) effect, and may in fact cause an acute reduction in VJ performance. View Full-Text
Keywords: postactivation potentiation; PAP; power postactivation potentiation; PAP; power

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Arias, J.C.; Coburn, J.W.; Brown, L.E.; Galpin, A.J. The Acute Effects of Heavy Deadlifts on Vertical Jump Performance in Men. Sports 2016, 4, 22.

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