Effect of heavy back squats on repeated sprint performance in trained men

M J Duncan, G Thurgood, S W Oxford
Journal of Sports Medicine and Physical Fitness 2014, 54 (2): 238-43

AIM: This study examined the impact of post activation potentiation on repeated sprint performance in trained Rugby Union players.

METHODS: Ten, male, professional Rugby Union players (mean age=25.2±5.02 years) performed 7, 30-meter sprints, separated by 25 seconds, 4 minutes following back squats (90% 1 repetition maximum) or a control condition performed in a counterbalanced order.

RESULTS: Significant condition X sprint interactions for 10-meter (P=0.02) and 30-meter (P=0.05) indicated that times were significantly faster in the PAP condition for sprints 5, 6 and 7 across both distances. Fatigue rate was also significantly lower in the PAP condition for 10-meter (P=0.023) and 30-meter (P=0.006) sprint running speed.

CONCLUSION: This study evidences that a heavy resistance exercise stimulus administered four minutes prior to repeated sprints can offset the decline in sprint performance seen during subsequent maximal sprinting over 10 and 30-meters in Rugby Union players.

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