Steadiness is reduced and motor unit discharge is more variable in old adults

The purpose of this study was to compare the steadiness and discharge rate of motor units during submaximal contractions performed by young and old adults. Subjects performed isometric and slow shortening and lengthening contractions with the first dorsal interosseous muscle. The steadiness of the i...

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Veröffentlicht in:	Muscle & nerve 2000-04, Vol.23 (4), p.600-612
Hauptverfasser:	Laidlaw, Douglass H., Bilodeau, Martin, Enoka, Roger M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Aged Aged, 80 and over aging Aging - physiology Biological and medical sciences Electromyography Female finger movement first dorsal interosseous Fundamental and applied biological sciences. Psychology Hand - innervation Humans Isometric Contraction - physiology Male Middle Aged Motor Activity - physiology Motor Neurons - physiology motor unit Muscle Contraction - physiology Muscle Development Muscle, Skeletal - growth & development Muscle, Skeletal - innervation Muscle, Skeletal - physiology Striated muscle. Tendons Vertebrates: osteoarticular system, musculoskeletal system
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