Prevalence and distribution of fasciculations in healthy adults: Effect of age, caffeine consumption and exercise.
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SourceAmyotrophic Lateral Sclerosis and Other Motor Neuron Disorders, 11, 1-2, (2010), pp. 181-186
Article / Letter to editor
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Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders
SubjectDCN 2: Functional Neurogenomics
Our objective was to determine the prevalence and distribution of fasciculations in healthy adults and to assess the effect of age, caffeine and exercise. Fasciculations were studied with ultrasonography in 58 healthy adults in various age categories. Questionnaires were used to determine effect of caffeine and regular exercise on the presence of fasciculations. Finally, we tested the effect of strenuous exercise on fasciculations in 10 healthy adults. Twenty-five subjects (43%) showed fasciculations on ultrasonography, mostly in the abductor hallucis longus muscle. Fasciculations were only sporadically encountered in muscle groups above the knee. Subjects with fasciculations were significantly older than those without. Caffeine and regular physical exercise did not influence the prevalence of fasciculations. However, strenuous physical exercise caused a temporary increase in fasciculations, but only in lower leg muscles. Fasciculations above the knee should raise suspicion and may warrant further investigation.
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