The effects of creatine supplementation on thermoregulation and isokinetic muscular performance following acute (3-day) supplementation
Rosene JM, Matthews TD, Mcbride KJ, Galla A, Haun M, Mcdonald K, Gagne N, Lea J, Kasen J, Farias C
The Journal of sports medicine and physical fitness · 9 citas
Etiquetas de revisión
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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 no declarada
Publicación
- Publicado
- 2015-12-01 · J Sports Med Phys Fitness · vol. 55 · número 12 · págs. 1488–96
- Editorial
- National Institutes of Health
- Citado
- 13 citas · más que el 67% de estudios similares · 0.6× el promedio de su campo
- Referencias
- 0 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Thermoregulation and physiological responses · Sports Performance and Training
- Palabras clave
- creatine supplementation, thermoregulation, isokinetic muscle performance, exercise in the heat, core body temperature, total body water, extracellular water, intracellular water, serum creatinine, urine specific gravity, peak torque, muscle fatigue, ergogenic aids, endurance exercise
- MeSH
- muscle, skeletal, humans, dehydration, body weight, creatine, exercise test, exercise, double-blind method, body temperature regulation, heart rate, muscle contraction, torque, dietary supplements, adult, male, physical exertion
10 autores
- John M. Rosene🇺🇸Plymouth State University
- T D Matthews
- Kelsey McBride
- A Galla
- Mykul Haun
- K Mcdonald
- Nate Gagne
- Joseph Lea
- Jacquelin Kasen
- Christina Farias
Resumen
El texto original del estudio, en el idioma en que se publicó.
Aim
The purpose of this investigation was to determine the effects of 3 d of creatine supplementation on thermoregulation and isokinetic muscular performance.
Methods
Fourteen males performed two exercise bouts following 3 d of creatine supplementation and placebo. Subjects exercised for 60 min at 60-65% of VO2max in the heat followed by isokinetic muscular performance at 60, 180, and 300°·s(-1). Dependent variables for pre- and postexercise included nude body weight, urine specific gravity, and serum creatinine levels. Total body water, extracellular water and intracellular water were measured pre-exercise. Core temperature was assessed every 5 min during exercise. Peak torque and Fatigue Index were used to assess isokinetic muscular performance.
Results
Core temperature increased during the run for both conditions. Total body water and extracellular water were significantly greater (P0.05) was found between conditions for intracellular water, nude body weight, urine specific gravity, and serum creatinine. Pre-exercise scores for urine specific gravity and serum creatinine were significantly less (P0.05) were found in peak torque values or Fatigue Index between conditions for each velocity. A significant (P<0.05) overall velocity effect was found for both flexion and extension. As velocity increased, mean peak torque values decreased.
Conclusion
Three d of creatine supplementation does not affect thermoregulation during submaximal exercise in the heat and is not enough to elicit an ergogenic effect for isokinetic muscle performance following endurance activity.
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