The Effects of Long-Term Magnesium Creatine Chelate Supplementation on Repeated Sprint Ability (RAST) in Elite Soccer Players
Zajac A, Golas A, Chycki J, Halz M, Michalczyk MM
Nutrients · 19 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
Según la declaración de financiación del texto completo.
Publicación
- Publicado
- 2020-09-28 · Nutrients · vol. 12 · número 10 · pág. 2961
- Editorial
- Multidisciplinary Digital Publishing Institute
- Citado
- 33 citas · más que el 88% de estudios similares · 2.5× el promedio de su campo
- Referencias
- 47 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY
- Áreas de investigación
- Sports Performance and Training · Muscle metabolism and nutrition · Magnesium in Health and Disease
- Palabras clave
- dietary supplementation, repeated sprint ability, elite soccer players, creatine, creatinine, lactate, acid-base balance, bicarbonate, output power
- MeSH
- humans, magnesium, creatine, chelating agents, time factors, soccer, dietary supplements, adult, male, athletic performance, young adult, high-intensity interval training
5 autores
- Adam Zając🇵🇱Akademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Artur Gołaś🇵🇱Akademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Jakub Chycki🇵🇱Akademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Mateusz Halz🇵🇱Akademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Małgorzata Magdalena Michalczyk🇵🇱 · autor de correspondenciaAkademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
Resumen
El texto original del estudio, en el idioma en que se publicó.
Aim
The aim of the study was to evaluate the effects of 16 weeks of a low dose of magnesium creatine chelate supplementation on repeated sprint ability test (RAST) results in elite soccer players.
Materials
Twenty well-trained soccer players participated in the study. The players were divided randomly into two groups: the supplemented group (SG = 10) and placebo group (PG = 10). Out of the 20 subjects selected for the study, 16 (SG = 8, PG = 8) completed the entire experiment. The SG ingested a single dose of 5500 mg of magnesium creatine chelate (MgCr-C), in 4 capsules per day, which was 0.07 g/kg/d. The PG received an identical 4 capsules containing corn starch. Before and after the study, the RAST was performed. In the RAST, total time (TT), first and sixth 35 m sprint length (s), average power (AP) and max power (MP) were measured. Additionally, before and after the test, lactate LA (mmol/L) and acid-base equilibrium pH (-log(H+)), bicarbonates HCO3- (mmol/L) were evaluated. Also, in serum at rest, creatinine (mg/dL) concentration was measured.
Results
After the study, significantly better results in TT, AP and MP were observed in the SG. No significant changes in the RAST results were observed in the PG. After the study, significant changes in the first 35 m sprint, as well as the sixth 35 m sprint results were registered in the SG, while insignificant changes occurred in the PG. A significantly higher creatinine concentration was observed. Also, a higher post-RAST concentration of LA, HCO3- and lower values of pH were observed in April, May and June compared with baseline values.
Conclusions
The long timeframe, i.e., 16 weeks, of the low dose of magnesium creatine chelate supplementation improved the RAST results in the SG. Despite the long period of MgCr-C supplementation, in the end of the study, the creatinine level in the SG reached higher but still reference values.
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