title: [Effect of marathons on neuromuscular excitability; comparison of electromyographic and biochemical findings].
abstract: The aim of this paper is to study the neuromuscular excitability of a group of marathon runners and to see how it can be modified right after the marathon. Spontaneously appearing multiplets in EMG signal under ischaemia served as a test of the neuromuscular hyperexcitability. The percentage of positive tests is much higher than in the control population; as a rule, the effect of the marathon is to diminish the neuromuscular hyperexcitability. The concentrations of Ca, Mg and P in the plasma as well as the globular concentration of Mg have been determined several times, both before and after the marathon; no correlation has been found with the neuromuscular hyperexcitability.
mesh_terms: D000328:Adult; D002118:Calcium / Q000097:blood*; D004576:Electromyography; D004912:Erythrocytes / Q000032:analysis; D005260:Female; D006801:Humans; D008274:Magnesium / Q000097:blood*; D008297:Male; D008875:Middle Aged; D009469:Neuromuscular Junction / Q000502:physiology*; D010758:Phosphorus / Q000097:blood*; D012420:Running; D009435:Synaptic Transmission
chemical_list: D010758:Phosphorus; D008274:Magnesium; D002118:Calcium
vernacular_title: Effet du marathon sur l'excitabilité neuromusculaire; comparaison de données électromyographiques et biochimiques.