The effects of magnesium supplementation on exercise performance
Finstad EW, Newhouse IJ, Lukaski HC, Mcauliffe JE, Stewart CR
Medicine and science in sports and exercise · 29 citas
Etiquetas de revisión
Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
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
- 2001-03-01 · Med Sci Sports Exerc · vol. 33 · número 3 · págs. 493–498
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 51 citas · más que el 75% de estudios similares · 0.9× el promedio de su campo
- Referencias
- 18 trabajos
- Acceso
- De pago
- Áreas de investigación
- Magnesium in Health and Disease · Exercise and Physiological Responses · Muscle metabolism and nutrition
- Palabras clave
- magnesium supplementation, exercise performance, post-exercise recovery, physically active women, plasma magnesium, erythrocyte magnesium, serum magnesium, magnesium oxide, anaerobic threshold, electrolytes
- MeSH
- humans, magnesium, magnesium oxide, antacids, placebos, exercise test, cross-over studies, double-blind method, oxygen consumption, heart rate, physical endurance, dietary supplements, adolescent, adult, female
5 autores
- E Finstad🇨🇦Lakehead University
- Ian Newhouse🇺🇸🇨🇦Grand Forks Human Nutrition Research Center; Lakehead University
- Henry C. Lukaski🇺🇸🇨🇦Grand Forks Human Nutrition Research Center; Lakehead University
- Jim E. McAuliffe🇺🇸🇨🇦Grand Forks Human Nutrition Research Center; Lakehead University
- CAMERON R. STEWART🇺🇸🇨🇦Grand Forks Human Nutrition Research Center; Lakehead University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Purpose
To determine the effects of magnesium (Mg2+) supplementation on performance and recovery in physically active women using the sensitive and recently advanced measure of ionic Mg2+ (iMg).
Methods
Participants (N = 121) were screened for [iMg] in plasma, with 44 (36.4%) exhibiting [iMg] below the normal range of 0.53-0.67 mmol.L-1 (4). Thirty-two subjects (21 +/- 3 yr) representing a broad range of [iMg] (0.54 +/- 0.04 mmol.L-1) completed the main 14-wk study. At baseline, participants submitted to a resting blood pressure measurement, and they completed both an anaerobic treadmill test and an incremental (aerobic) treadmill test. For the latter, values for workload, oxygen uptake, and heart rate were obtained at both anaerobic threshold and maximal effort. Blood samples for iMg, total serum Mg2+ (TMg), erythrocyte Mg2+ (EMg), Ca2+, K+, Na+, hemoglobin, hematocrit, lactate, and glucose were also collected pretest, and 4, 10, 30 min, and 24 h posttest. Subjects received 212 mg.d-1 Mg oxide or placebo in a double-blind fashion and were retested after 4 wk. After a 6-wk washout period, the testing was repeated with a treatment crossover.
Results
Ionic Mg2+ increased with Mg2+ treatment versus placebo (P < 0.05); however, performance and recovery indices were not significantly affected.
Conclusion
Four weeks of 212 mg.d-1 Mg oxide supplementation improves resting [iMg] levels but not performance or recovery in physically active women.
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