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NITRATE and power MUSCLE: On the spinach, Popeye was right

Spinach or rather they contain nitrates can actually stimulate our muscles. This is the result of this small study on 14 volunteers by researchers at the Karolinska Institute (Sweden) and published in the February 2 edition of the journal Cell.


This small randomized study in 14 non-smoking volunteers, aged about 25 years, was not about the spinach, but the effects of taking a supplement containing nitrate, compound found in spinach and other greens leaf. It notes that supplementation with nitrate for three days only, optimizes the use of oxygen in the mitochondria of muscle cells. With this supplementation, participants need less oxygen during a practice exercise.

In the human body, cells produce energy by using tiny organelles (about internal the mitochondria. Mitochondria utilize glucose and oxygen to produce a chemical called ATP, which serves as fuel for the cell. This fuel is essential for all activities of cells, muscles and organs. This efficiency can be measured by examining the ratio of ATP is produced by the amount of oxygen consumed.

The volunteers were randomized to receive either a supplement of sodium nitrate or placebo supplements (containing table salt) 3 times daily for 3 days. A small sample of muscle (biopsy) was taken from the thigh. They also participated in an exercise test to measure the amount of oxygen they use during exercise. After a break of six days, the volunteers repeated the process. The researchers compared the number of mitochondria, their function and efficiency, and oxygen consumption during exercise after nitrate supplementation (supplementation or placebo).

Results: The researchers note that after supplementation of nitrate, nitrate levels in the blood of volunteers growing well, and the muscle mitochondria of the participants in nitrate produce more ATP per unit of oxygen, the participants used less oxygen during exercise. The researchers conclude that a relationship between mitochondrial efficiency of each individual and their oxygen consumption and energy production during exercise.

Nitrates may therefore well have a beneficial effect on mitochondria in young, healthy, at least in the short term with a lower oxygen consumption without reducing performance. But studies of long-term and larger scale are needed to identify the risk-benefit ratio Long-term nitrate supplementation.

Source: http://www.santelog.com/modules/connaissances/actualite-sante-nitrate-et-puissance-musculaire-sur-les-eacutepinards-popeye-avait-raison_4931_lirelasuite.htm # lirelasuite