The effect of squat depth on the post activation potentiation response
Cardiff Metropolitan University
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Knight, JW. The effect of different squat depth on the Post Activation Potentiation response during 40m sprint performance. Previous studies have suggested that post-activation potentiation can have a positive effect in improving the performance of explosive strength and power activities. Also there is previous evidence to suggest that squat depth can influence muscle activation and performance. This study was designed to see whether squat depth had an influence on creating a PAP response and whether this response could affect sprinting performance over 40m. Fifteen male competitive, rugby players all whom train and participate in strength and conditioning sessions regularly (Height 186.30±4.678 cm; Weight 95.25±5.488 kg; 90 degree of knee flexion 1RM 190.67±29.93 kg; Parallel1RM 159.33±23.37 kg) performed a baseline sprint of 40m measured at 5, 10, 20 and 40m intervals. They also performed 3 reps at 90% of 1RM of both parallel and 90 degree squat variations followed by sprint tests at 5, 10, 20 and 40m intervals. Significant differences (p<0.05) were observed at 20m between baseline and parallel scores (p=0.000) and 40m between parallel and baseline (p=0.016) and parallel and 90 degree (p=0.018).There was also a significant difference between baseline and 90 degree score (p=0.039).However no significant differences (p<0.05) were observed at 5 or 10m. Whether the results in sprint performance came as a result of a PAP response cannot be completely assumed as there were a number of extrinsic variables that may have influenced performance results. However the study does provide sufficient evidence to suggest inducing a PAP response can influence sprinting performance and therefore warrants increased development of research into the subject area.
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Jones, Annicka (2012-09)PURPOSE: Postactivation potentiation (PAP) refers to increased muscular force generation due to previous muscular activity. Resistance exercise has been shown to induce PAP, therefore enhancing performance of a subsequent ...
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CAN POST ACTIVATION POTENTIATION (PAP) HAVE AN EFFECT ON SPORTS SPECIFIC SPRINT AND AGILITY PERFORMANCE, AT SELECTED INTERVALS OVER A 12 MINUTE TIME PERIOD, IN MALE RUGBY UNION PLAYERS. Waricker, Angus (University of Wales Institute Cardiff, 2012)Post activation potentiation (PAP) is the neurological response of muscle spindles to a voluntary muscle contraction following an activity performed at a specific load or intensity (Tillin and Bishop, 2009). Studies have ...