Creatine Supplementation and Multiple Sprint Running Performance

Abstract

The aim of this study was to examine the effects of short-term creatine monohydrate supplementation on multiple sprint running performance. Using a double-blind research design, 42 physically active men completed a series of 3 indoor multiple sprint running trials (15 x 30 m repeated at 35-second intervals). After the first 2 trials (familiarization and baseline), subjects were matched for fatigue score before being randomly assigned to 5 days of either creatine (4 x d(-1) x 5 g creatine monohydrate + 1 g maltodextrin) or placebo (4 x d(-1) x 6 g maltodextrin) supplementation. Sprint times were recorded via twin-beam photocells, and earlobe blood samples were drawn to evaluate posttest lactate concentrations. Relative to placebo, creatine supplementation resulted in a 0.7 kg increase in body mass (95% likely range: 0.02 to 1.3 kg) and a 0.4% reduction in body fat (95% likely range: -0.2 to 0.9%). There were no significant (p > 0.05) between-group differences in multiple sprint measures of fastest time, mean time, fatigue, or posttest blood lactate concentration. Despite widespread use as an ergogenic aid in sport, the results of this study suggest that creatine monohydrate supplementation conveys no benefit to multiple sprint running performance.

Creatine for Exercise and Sports Performance, with Recovery Considerations for Healthy Populations

“…Not all studies, however, suggested that creatine supplementation improves sprint performance [54,[64][65][66]. In this respect, Glaister and colleagues [67] reported no change in sprint running performance (30 m dash) after a standard 5-day creatine loading phase in active college-aged men who were consistently completing activities that involved sprinting. Similarly, Delecluse et al [64] also reported that creatine supplementation did not improve 40-m dash performance after a 7-day creatine loading protocol in elite college sprinters.…”

The Effects of Polyethylene Glycosylated Creatine Supplementation on Anaerobic Performance Measures and Body Composition

“…In general, the findings of previous studies (11,14,32) have suggested that the ergogenic effect of creatine supplementation on sprinting performance may vary based on differences in training status, athletic sample examined, sprint distance assessed, or addition of a concurrent resistance training program. (31) compared with the lack of improvement in the participants of this investigation and previous studies (11,14) who were not engaged in a concurrent resistance training program during the course of the study. In conjunction, the present findings and those of others (11,14,31,32) suggested that creatine supplementation may improve 40-and 100-yard dash performance only when combined with resistance-training.…”

“…(31) compared with the lack of improvement in the participants of this investigation and previous studies (11,14) who were not engaged in a concurrent resistance training program during the course of the study. In conjunction, the present findings and those of others (11,14,31,32) suggested that creatine supplementation may improve 40-and 100-yard dash performance only when combined with resistance-training.…”

Efeitos da suplementação de creatina no exercício intermitente de alta intensidade: divergências e recomendações metodológicas

“…Os resultados, no entanto, têm sido bastante heterogêneos e controversos. Embora existam diversos estudos que demonstraram claramente os efeitos ergogênicos da suplementação de creatina em atividades intermitentes de alta intensidade 5 , outros tantos falharam em observar esses benefícios 6,7 . De fato, existem excelentes revisões sobre os efeitos da suplementação de creatina no exercício intermitente 5,8,9 .…”

“…Mendes et al 7 demonstraram que a suplementação de creatina (20g/ dia por oito dias) não melhorou o tempo de nadadores submetidos a protocolo de exercício intermitente de alta intensidade e curta duração (3x3x50 metros com 30 segundos de intervalo entre as séries). Glaister et al 6 também não observaram efeito ergogênico da 15 observaram que quatro dias de suplementação de creatina (5g/dia) não promoveu melhora no desempenho de indivíduos que realizaram exercícios intermitentes máximos de curta duração em cicloergômetro (10x6 segundos, com 30 segundos intervalo entre as séries). Cornish et al 16 , avaliando atletas de hóquei no gelo, verificaram que a suplementação de creatina não foi eficaz em melhorar a potência pico, o trabalho total e a resistência à fadiga dos atletas.…”