Effects of Four Weeks of Beta-Alanine Supplementation Combined with One Week of Creatine Loading on Physical and Cognitive Performance in Military Personnel
Samadi M, Askarian A, Shirvani H, Shamsoddini A, Shakibaee A, Forbes SC, Kaviani M
International journal of environmental research and public health · 11 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
- 2022-06-29 · Int J Environ Res Public Health · vol. 19 · número 13 · pág. 7992
- Editorial
- Multidisciplinary Digital Publishing Institute
- Citado
- 15 citas · más que el 85% de estudios similares · 1.8× el promedio de su campo
- Referencias
- 59 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY
- Áreas de investigación
- Biochemical effects in animals · Muscle metabolism and nutrition · Sports Performance and Training
- Palabras clave
- beta-alanine supplementation, creatine loading, military personnel, physical performance, cognitive performance, blood lactate, testosterone, cortisol, insulin-like growth factor I, vertical jump, muscle power, muscle strength, mathematical processing
- MeSH
- muscle, skeletal, humans, creatine, lactates, testosterone, beta-alanine, double-blind method, cognition, dietary supplements, adult, military personnel, male, muscle strength, young adult
7 autores
- Mohammad Samadi🇮🇷Baqiyatallah University of Medical Sciences
- Ali Askarian🇮🇷Baqiyatallah University of Medical Sciences
- Hossein Shirvani🇮🇷Baqiyatallah University of Medical Sciences
- Alireza Shamsoddini🇮🇷Baqiyatallah University of Medical Sciences
- Abolfazl Shakibaee🇮🇷Baqiyatallah University of Medical Sciences
- Scott C. Forbes🇨🇦Brandon University
- Mojtaba Kaviani🇨🇦 · autor de correspondenciaAcadia University
Resumen
El texto original del estudio, en el idioma en que se publicó.
The purpose was to investigate the effects of a 7-day creatine (Cr) loading protocol at the end of four weeks of β-alanine supplementation (BA) on physical performance, blood lactate, cognitive performance, and resting hormonal concentrations compared to BA alone. Twenty male military personnel (age: 21.5 ± 1.5 yrs; height: 1.78 ± 0.05 m; body mass: 78.5 ± 7.0 kg; BMI: 23.7 ± 1.64 kg/m2) were recruited and randomized into two groups: BA + Cr or BA + placebo (PL). Participants in each group (n = 10 per group) were supplemented with 6.4 g/day of BA for 28 days. After the third week, the BA + Cr group participants were also supplemented with Cr (0.3 g/kg/day), while the BA + PL group ingested an isocaloric placebo for 7 days. Before and after supplementation, each participant performed a battery of physical and cognitive tests and provided a venous blood sample to determine resting testosterone, cortisol, and IGF-1. Furthermore, immediately after the last physical test, blood lactate was assessed. There was a significant improvement in physical performance and mathematical processing in the BA + Cr group over time (p < 0.05), while there was no change in the BA + PL group. Vertical jump performance and testosterone were significantly higher in the BA + Cr group compared to BA + PL. These results indicate that Cr loading during the final week of BA supplementation (28 days) enhanced muscular power and appears to be superior for muscular strength and cognitive performance compared to BA supplementation alone.
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