Aktivasyon Sonrası Potansiyasyonun Yön Değiştirme Performansına Etkisi
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The main purpose of this study was to investigate the effect of post-activation potentiation (PAP) on the change of direction (COD) performance. Eighteen male team sports athletes with resistance training experience participated in this study voluntarily. Participants attended 6 separate sessions and performed T-test and 505 COD tests under two conditions: (a) with a PAP and (b) Control condition in a randomized order and with at least 48-hour intervals. In the first session anthropometric and DXA measurements and back squat one repetition maximum (1 RM) were determined. In PAP condition pre-conditioning activity was applied as 3 sets of 3 repetitions of back squats at 90% of 1 RM and in Control condition participants spend this period with passive recovery. After PAP or Control conditions participants repetitively performed the COD tests at 15th seconds and at 2nd, 4th, 8th, 12th and 15th minutes. 2 x 6 (Condition x Time) ANOVA with repeated-measures was used to analyze the effect of PAP on COD performance. Bonferroni test was performed as post hoc when F value was significant. Additionally, Smallest Real Difference (SRD) was used to evaluate the individual responses. In 505 test, no significant Condition effect (F(1,17)=0.563; p=0.463; η2=0.032), Time effect (F(5,85):=2.701; p=0.69; η2=0.510) or Condition x Time interaction (F(5,85)=1.571; p=0.236; η2=0.377) were found. In T-test on the other hand, there was no significant Condition effect (F(1,17)=1.322; p=0.266; η2=0.072). However, Time effect (F(5,13):=9.178; p=0.001; η2=0.779) and Condition x Time interaction (F(5,13)=6.749; p=0.003; η2=0.722) were significant. When the individual results of both COD tests were examined, it was observed that no Condition effect occurred in the vast majority of the participants after the pre-conditioning activity. In conclusion, the findings of this study showed that the pre-conditioning activity applied to elicit the PAP did not have any significant effect on 505 test, while the pre-conditioning activity resulted in fatigue rather than a potentiation effect on T-test COD performance.