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Effect of loading creatine monohydrate supplement with post-activation potentiation on anaerobic power of athlete girls
Poster Presentation
Paper ID : 1583-11THCONF
Authors
1Department of Physiology, Shahid Chamran University of Ahwaz,
2گروه فیزیولوژی ورزشی، دانشگاه شهید چمران اهواز
Abstract
Introduction: Along with exercise, dietary supplementation is also common. Creatine supplementation is proven to be one of the most effective and most effective nutritional supplements available to athletes. Creatin plays an important role in muscle energy metabolism. Other methods of increasing the performance of athletes include the use of proper warming before the training begins .Warming up is a variety of post-activation potentiation (PAP), one of them. PAP is a phenomenon that can acutely increase muscle power. This study examined the effects of creatine supplementation on explosive performance and the optimal individual PAP time during a set of training bouts.
Methodology: Twenty four explosive athletes performed tests of back squat for one repetition maximum (1RM) strength and complex training bouts for determining the individual optimal timing of PAP, height and peak power of a counter movement jump before and after the supplementation. The subjects performed Vertical Jump Test using force plate. After that, they performed the squat with three repetitions. After 30 seconds of inactive restart, they performed a vertical jump test. Subjects were assigned to a creatine or placebo group and then consumed 20 g of creatine or carboxymethyl cellulose per day for six days. After the supplementation, The Jump height size in the creatin group significantly increased (p<0.05).
Results: The optimal individual PAP time in the creatine group was also significant earlier than the pre-supplementation and post-supplementation of the placebo group (p < 0.05). There was significant difference in jump performance between the groups.
Discussion: This study demonstrates that creatine supplementation improves maximal muscle strength and the optimal individual PAP time of complex training and has significant effect on explosive performance. It can be concluded that any contraction that stimulates muscle fibers can improve subsequent performance and benefit from the PAP phenomenon.According to the findings of this study and based on the results of other studies, the potential for improving the performance of the PAP phenomenon is probably dependent on intramuscular changes. This increase in power generation may be due to an increase in calcium concentrations in cross-bridge locations and phosphorylation of myosin-bearing colonies. Also, given the positive effect of taking creatine supplementation on the strength and speed of exercise, this supplement can be included with caution in athletic diets. Overall, the results of the study showed that creatine supplements increase the strength of the lower limbs with PAP and improve the increase of anaerobic power.
Methodology: Twenty four explosive athletes performed tests of back squat for one repetition maximum (1RM) strength and complex training bouts for determining the individual optimal timing of PAP, height and peak power of a counter movement jump before and after the supplementation. The subjects performed Vertical Jump Test using force plate. After that, they performed the squat with three repetitions. After 30 seconds of inactive restart, they performed a vertical jump test. Subjects were assigned to a creatine or placebo group and then consumed 20 g of creatine or carboxymethyl cellulose per day for six days. After the supplementation, The Jump height size in the creatin group significantly increased (p<0.05).
Results: The optimal individual PAP time in the creatine group was also significant earlier than the pre-supplementation and post-supplementation of the placebo group (p < 0.05). There was significant difference in jump performance between the groups.
Discussion: This study demonstrates that creatine supplementation improves maximal muscle strength and the optimal individual PAP time of complex training and has significant effect on explosive performance. It can be concluded that any contraction that stimulates muscle fibers can improve subsequent performance and benefit from the PAP phenomenon.According to the findings of this study and based on the results of other studies, the potential for improving the performance of the PAP phenomenon is probably dependent on intramuscular changes. This increase in power generation may be due to an increase in calcium concentrations in cross-bridge locations and phosphorylation of myosin-bearing colonies. Also, given the positive effect of taking creatine supplementation on the strength and speed of exercise, this supplement can be included with caution in athletic diets. Overall, the results of the study showed that creatine supplements increase the strength of the lower limbs with PAP and improve the increase of anaerobic power.
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