Potentiating effects of deadlifts on countermovement jump performance

• Main Author: Luthfil Aidiel Abdul Razak
• Other Authors: -
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2021
• Subjects: Science::General
• Online Access: https://hdl.handle.net/10356/153089
• Institution: Nanyang Technological University

Postactivation potentiation (PAP) is a phenomenon that acutely improves performance after a conditioning activity (CA). The purpose of this study was to investigate the effects of multiple sets of deadlifts on countermovement jump (CMJ) performance. It is hypothesized that the deadlift condition will result in improved performance versus the control. Sixteen resistance trained males (Age = 24.11 1.11 years; Height = 1.72 0.07 m, Body Mass = 72.21 10.21 kg; Body Fat Percentage = 17.89 8.4 %; Deadlift 1RM = 154.43 32.23 kg; Relative Deadlift Strength (1RM/Body Mass) = 2.13 0.35) were recruited. On the first session, subjects underwent anthropometric measurements, CMJ familiarization and 1RM deadlift test. Thereafter, 2 testing sessions in randomized order were conducted. The control session involved CMJs at 4, 8, 12 and 16 minutes while the deadlift session involved 3 sets of 3 repetitions of deadlifts at 85% 1RM before the CMJs at 4, 8, 12 and 16 minutes. Jump height and peak ground reaction force (GRF) were measured using a force plate. Two separate 2 x 4 (condition x time) repeated measures ANOVA were used to assess peak GRF and jump height. Repeated measures ANOVA revealed no significant interaction or main effects of condition or time (p > 0.05). In conclusion, multiple sets of deadlifts was an ineffective CA to improve CMJ. PAP is a highly individualized phenomenon and is affected by multiple factors. Future studies can determine the best protocol for deadlifts and PAP. Keywords: deadlift, countermovement jump, postactivation potentiation, warmups