The Acute Effects of Pre-Conditioning Activities with a Weighted Vest on Subsequent Linear Sprint and Change of Direction Performance in Physical Education Students
Eskişehir Technical University, Sport Sciences Faculty, Department of Coaching Education, Eskişehir, Turkey.
Yozgat Bozok University, School of Physical Education and Sports, Yozgat, Turkey.
Keywords: Pre-conditioning contraction, Post activation potentiation, Weighted vest, Sprint, Change of direction, Agility.
The aim of this study was to determine the effects of a post activation potential application response in sprinting and change of direction performance. Fifteen physically active, healthy men (age 23.5±2.0 years, height 175.0±7.6 cm, body weight 72.2±8.5 kg, body fat 15.7±2.9 %) voluntarily participated in this study. Cross sectional research design with a single group (n=15) and repeated tests was used and applicants participated in sprint and pro-agility tests 8 minutes after the pre-conditioning (PC) with weight wests that corresponded 5% and 10% of their body weights in different days without pre-conditioning. For PC, 8 minutes before for each 30m sprint and pro-agility tests, they did a resisted running with a weight vest corresponding 5% and 10% of their body weights. Analysis shows that, sprint after PC activity as resistance running with %5 and %10 of body weight (p<0.05) and agility (p<0.05) data showed statistically significant difference. According to the results of Bonferroni post-hoc correction, 30m sprint test times, which were performed 8 minutes after the PC which includes a 30m sprint with weight vests corresponding to 5% of their body weight, showed an increase from control test times, 4.34±0.23 seconds to 4.40±0.24 seconds respectively. This 0.07 second increase is statistically significant (p<0.05). In our study, PAP effect being observed as negative, might be related with the lower body weight percentages of resisted running exercise which was selected for PAP.