The effect of variable magnesium intake on potential factors influencing endurance capacity

Biological Trace Element Research
P LowneyC L Keen

Abstract

Rats fed a magnesium (Mg) deficient diet have a lower endurance capacity than rats fed Mg adequate diets. The current study evaluates the effects of marginal, moderate, and severe Mg deficiencies on physiological and biochemical changes that may contribute to the reduced endurance capacity of Mg deficient rats. Variable levels of dietary Mg (400, 200, 100, 50 micrograms/g) were fed for 23 d to 5-wk-old male Osborne-Mendel rats. Indirect blood pressure and heart rate were measured during dietary treatment. Forty-eight hours after an endurance test, rats were killed and sampled for plasma glucose, insulin, and triglyceride levels. Organ weights, mineral and trace element concentrations, and carcass composition were determined. Blood pressure was lower in rats fed 50 and 100 ppm Mg during the first half of the study than in controls (400 ppm Mg). There were no significant differences in blood pressure among groups at the end of the study. Heart rate was not affected by dietary Mg intake. Plasma insulin was lowered by decreasing dietary Mg; however, plasma glucose and triglyceride concentrations were not affected by dietary Mg intake. Rats fed 100 and 50 ppm Mg diets had significantly higher calcium concentrations in plasma and gas...Continue Reading

References

Jan 1, 1978·The International Journal of Biochemistry·G A George, F W Heaton
Jun 1, 1977·Pediatric Research·G CosensL S Hurley
Dec 1, 1975·The Biochemical Journal·G A George, F W Heaton
Aug 1, 1987·Metabolism: Clinical and Experimental·C L KeenJ S Stern
Jan 1, 1985·Journal of the American College of Nutrition·K B FranzR S Eliot
Jan 1, 1985·Journal of the American College of Nutrition·K J MorganD R Fischer
Dec 1, 1974·Journal of Applied Physiology·Y ItokawaM Fujiwara
Jan 1, 1974·The American Journal of Clinical Nutrition·M S Seelig, H A Heggtveit
Oct 1, 1970·Journal of Applied Physiology·L I RoseK H Cooper
Dec 1, 1970·The Journal of Nutrition·W M Britton, E L Stokstad
Jul 1, 1964·The Biochemical Journal·L Martindale, F W Heaton
Oct 1, 1966·Diabetes·M E KahilH Brown
Oct 1, 1984·Drugs·B M Altura, B T Altura
Feb 1, 1982·Acta Physiologica Scandinavica·T AnderssonB Hellman
Jun 1, 1981·The Journal of Nutrition·J L CaddellJ C Smith
Nov 1, 1981·The Journal of Nutrition·Y RayssiguierD Weiser
Aug 1, 1937·The Biochemical Journal·E Watchorn, R A McCance
Nov 1, 1960·American Journal of Public Health and the Nation's Health·M G SirkenM L Brown
Dec 1, 1984·Plant Cell Reports·W Eichenberger, B Urban
Jun 1, 1981·Biological Trace Element Research·M S CleggL S Hurley

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.