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MAP20071019462Fernström, ElisabethElectromyographic activity during typewriter and keyboard use / Elisabeth Fernström, Mats O. Ericson, and Hans MalkerSumario: This study investigated how ergonomic design influences neck-and-shoulder muscle strain, through keyboard assessment. Muscular activity was measured electromyographically from six muscles in the forearm and shoulders of eihgt experienced typists using each of five different types of keyboardEn: Ergonomics. - London and Washington. - Vol. 37, nº 3, March 1994 ; p. 477-4841. Ergonomía. 2. Mecanografía. 3. Postura. 4. Diseño. 5. Extremidades superiores. 6. Electromiografía. I. Ericson, Mats O.. II. Malker, Hans. III. Title. IV. Título: Ergonomics.