Isometric mid-thigh pull vs. plyometric post activation potentiation and their effects on maximum velocity in athletic males
Author
Sims, Louie
Date
2016-04-02Type
Dissertation
Publisher
Cardiff Metropolitan University
Metadata
Show full item recordAbstract
Postactivation potentiation (PAP), an acute enhancement of muscular performance observed after a preconditioning stimulus, has been reported to increase sprint acceleration performance after a variety of contraction types. Very few studies have analysed different contraction type effects on subsequent sprint performance, with no current studies solely investigating the maximal velocity phase of sprinting or kinematic data, therefore the present study examined the effects of both isometric mid-thigh pulls (IMTP) and plyometric pogo hops (PPH) on subsequent maximum velocity phase sprinting performance. In a randomized crossover study design, athletic men (n = 13) performed a standardised warm up with no further PAP stimulus (C) or the standardised warm up followed by 3 sets of 5s maximal isometric contraction (IMTP) or 3 sets of 20 plyometric hops (PPH). 8 minutes of passive rest was utilised and then subjects performed three 45m sprints each separated by 4 minutes rest (with the 30-40m split being analysed). 2D video analysis was used to calculate changes in step length and frequency between trials and force data was also collected during the IMTP. Repeated measures ANOVA indicated no significant differences between PPH and IMTP 30-40m times (p= 1.00) and IMTP vs. C 30-40m times (p= .064). A significant decrease in performance was observed between PPH and C 30-40m times (p= .05). No significant differences were observed in C vs. PPH average step length (p= .168), C vs. IMTP (p= 1.00) and PPH vs. IMTP (p= .281). No significant differences were observed between C vs. PPH (p= 1.00) and C vs. IMTP average step frequency (p= .216). Differences in PPH vs. IMTP average step frequency approached significance (p=0.53). There were also no significant differences in performance responses between the strongest and weakest subjects but large variations in individual responses were found between the subjects. The findings suggest that the present protocol in the present subject population will lead to decreases in maximal velocity sprint performance. However large individual responses were present and thus PAP should be considered on an individual basis. Factors including contraction type, volume, intensity and rest period should be carefully considered in PAP practical application, with future research aiming to utilise a similar protocol in elite populations.
Collections
Related items
Showing items related by title, author, subject and abstract.
-
Is repeated-sprint ability related to repeated-agility performance and does a repeated-sprint training intervention improve repeated-agility performance?
Crossfield, James (University of Wales Institute Cardiff, 2010)The aim of the present study was to examine whether there is a relationship between repeated-sprint ability (RSA) and repeated-agility performance. Relationship tests were used between pre-training and post-training ... -
To investigate whether sprint-specific stretches are more effective are more effective when compared to standard dynamic stretches at enhancing sprint performance
Kinnaird, Zach (Cardiff Metropolitan University, 2013)Within sport warm up precedes almost every athletic performance, the effectiveness of warm up can determine how prepared an athlete is for the performance ahead, and subsequently how well they perform. One of the major ... -
Comparing lower leg kinematics and coordination in sprint acceleration with and without the constraint of holding a field hockey stick
Wdowski, Maximilian (University of Wales, 2011-10-25)The importance of rapid sprint acceleration in team based sport performance has been well established. Sports scientists have created a number of training techniques, such as interval sprint training, to improve the ...