title: The Effects of Creatine Supplementation on Explosive Performance and Optimal Individual Postactivation Potentiation Time.
abstract: Creatine plays an important role in muscle energy metabolism. Postactivation potentiation (PAP) is a phenomenon that can acutely increase muscle power, but it is an individualized process that is influenced by muscle fatigue. This study examined the effects of creatine supplementation on explosive performance and the optimal individual PAP time during a set of complex training bouts. Thirty 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. 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 1RM strength in the creatine group significantly increased (p < 0.05). 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 no significant difference in jump performance between the groups. This study demonstrates that creatine supplementation improves maximal muscle strength and the optimal individual PAP time of complex training but has no effect on explosive performance.
authors.affiliation: Office of Physical Education, National Taipei University of Business, Taipei 10051, Taiwan. sunnywango@gmail.com.|Graduate Institute of Athletics and Coaching Science, National Taiwan Sport University, Taoyuan 33301, Taiwan. sunnywango@gmail.com.
authors.forename: Chia-Chi
authors.initials: CC
authors.lastname: Wang
authors.affiliation: Graduate Institute of Athletics and Coaching Science, National Taiwan Sport University, Taoyuan 33301, Taiwan. yangrugby@gmail.com.
authors.forename: Ming-Ta
authors.initials: MT
authors.lastname: Yang
authors.affiliation: Sports Science and Research Department, National Sports Training Center, Kaohsiung 81343, Taiwan. 980506@ntsu.edu.tw.
authors.forename: Kang-Hao
authors.initials: KH
authors.lastname: Lu
authors.affiliation: Graduate Institute of Athletics and Coaching Science, National Taiwan Sport University, Taoyuan 33301, Taiwan. quenhuen@gmail.com.
authors.forename: Kuei-Hui
authors.initials: KH
authors.lastname: Chan
mesh_terms: D003404:Creatinine / Q000008:administration & dosage* / Q000378:metabolism; D019587:Dietary Supplements; D004311:Double-Blind Method; D004734:Energy Metabolism / Q000187:drug effects*; D017079:Exercise Tolerance / Q000187:drug effects*; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D018763:Muscle Fatigue / Q000187:drug effects; D053580:Muscle Strength / Q000187:drug effects; D018482:Muscle, Skeletal / Q000187:drug effects* / Q000378:metabolism; D058573:Performance-Enhancing Substances / Q000008:administration & dosage* / Q000378:metabolism; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D058573:Performance-Enhancing Substances; D003404:Creatinine
keywords: complex training; counter movement jump; maximal muscle strength; peak power