conclusions amateur motocross riders had significant anaerobic metabolism demands and had reduced handgrip strength following a training session. these data suggest an importance of physical training aimed at improving anaerobic and neuromuscular performance of the upper limbs in amateur motocross riders. background motocross is one of the most popular motorized off-road sports, characterized b...

A multifunctional, ubiquitous molecule, adenosine acts at cell-surface G protein-coupled receptors, as well numerous enzymes, including protein kinases and adenylyl cyclase. Extracellular is thought to be produced either by export or metabolism, predominantly through ecto-5’-nucleotidase activity (also producing inorganic phosphate). It inactivated extracellular metabolism via deaminase ammonia...

The relationship between ethylene action and metabolism was investigated in the etiolated pea seedling (Pisum sativum L. cv. Alaska) by inhibiting ethylene action with Ag(+), high CO(2), and low O(2) and then determining if ethylene metabolism was inhibited in a similar manner. Ag(+) (100 milligrams per liter) was clearly the most potent antiethylene treatment. Ag(+) pretreatment inhibited the ...

I. Studies were made with pair-fed vitamin Blz-deficient and vitamin B12-treated or cobalt-treated ewes fed a Co-deficient diet in cages. Measurements were made of body-weight changes and some observations were made of energy and nitrogen metabolism. The effects of oral Co on energy and nitrogen metabolism were examined in sheep fed the Co-deficient diet, but not yet deficient of vitamin B,, in...

BACKGROUND Photorespiratory carbon metabolism was long considered as an essentially closed and nonregulated pathway with little interaction to other metabolic routes except nitrogen metabolism and respiration. Most mutants of this pathway cannot survive in ambient air and require CO(2)-enriched air for normal growth. Several studies indicate that this CO(2) requirement is very different for ind...