Effects of 4-week creatine supplementation combined with complex training on muscle damage and sport performance

Chia Chi Wang, Chu Chun Fang, Ying Hsian Lee, Ming Ta Yang, Kuei Hui Chan

Research output: Contribution to journalArticle

Abstract

Creatine supplementation has an ergogenic effect in an acute complex training bout, but the benefits of chronic creatine supplementation during long-term complex training remain unknown. The study aimed to evaluate the effects of 4-week complex training combined with creatine supplementation on sport performances and muscle damage biomarkers. Thirty explosive athletes were assigned to the creatine or placebo group, which consumed 20 g of creatine or carboxymethyl cellulose, respectively, per day for 6 days followed by 2 g of the supplements until the end of the study. After 6 days of supplementation, subjects performed tests of one repetition maximum (1-RM) strength of half squat and complex training bouts to determine the optimal individual post-activation potentiation time. Thereafter, all subjects performed a complex training programme consisting of six sets of 5-RM half squats and plyometric jumps 3 times per week for 4 weeks. Body composition, 30-m sprint and jump performances were assessed before and after the training period. Moreover, blood creatine kinase (CK) activity was analysed at the first and the last training bout. After the training, the 1-RM strength in the creatine group was significantly greater than in the placebo group (p < 0.05). CK activity after the complex training bout in the creatine group was significantly reduced compared with the placebo group (p < 0.05). No differences were noted for other variables. This study concluded that creatine supplementation combined with complex training improved maximal muscular strength and reduced muscle damage during training.

Original languageEnglish
Article number1640
JournalNutrients
Volume10
Issue number11
DOIs
Publication statusPublished - Nov 2 2018

Fingerprint

athletic performance
Athletic Performance
creatine
Creatine
Muscles
muscles
placebos
Placebos
creatine kinase
Creatine Kinase
Performance-Enhancing Substances
Carboxymethylcellulose Sodium
carboxymethylcellulose
athletes
Muscle Strength
Body Composition
education programs
Athletes
body composition
biomarkers

Keywords

  • Creatine kinase
  • Half squat
  • Optimal individual post-activation potentiation time
  • Plyometric jump

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics

Cite this

Effects of 4-week creatine supplementation combined with complex training on muscle damage and sport performance. / Wang, Chia Chi; Fang, Chu Chun; Lee, Ying Hsian; Yang, Ming Ta; Chan, Kuei Hui.

In: Nutrients, Vol. 10, No. 11, 1640, 02.11.2018.

Research output: Contribution to journalArticle

Wang, Chia Chi ; Fang, Chu Chun ; Lee, Ying Hsian ; Yang, Ming Ta ; Chan, Kuei Hui. / Effects of 4-week creatine supplementation combined with complex training on muscle damage and sport performance. In: Nutrients. 2018 ; Vol. 10, No. 11.
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