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Titolo:
Motor unit recruitment during lengthening contractions of human wrist flexors
Autore:
Stotz, PJ; Bawa, P;
Indirizzi:
Simon Fraser Univ, Sch Kinesiol, Burnaby, BC V5A 1S6, Canada Simon Fraser Univ Burnaby BC Canada V5A 1S6 , Burnaby, BC V5A 1S6, Canada
Titolo Testata:
MUSCLE & NERVE
fascicolo: 11, volume: 24, anno: 2001,
pagine: 1535 - 1541
SICI:
0148-639X(200111)24:11<1535:MURDLC>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
PATTERN; MUSCLES; SLOW;
Keywords:
lengthening contraction; motoneuron; motor unit; recruitment; size principle; wrist muscles;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Bawa, P Simon Fraser Univ, Sch Kinesiol, Burnaby, BC V5A 1S6, Canada SimonFraser Univ Burnaby BC Canada V5A 1S6 y, BC V5A 1S6, Canada
Citazione:
P.J. Stotz e P. Bawa, "Motor unit recruitment during lengthening contractions of human wrist flexors", MUSCLE NERV, 24(11), 2001, pp. 1535-1541

Abstract

The purpose of this study was to revisit the question of recruitment of motor units during lengthening contractions because of conflicting views in the literature on this subject. Motor unit activity was recorded from the flexor carpi radialis muscle of four human subjects to compare the patterns of recruitment during lengthening and isometric contractions. Lengthening contractions were produced either when the subject voluntarily stopped opposing a background load or when an additional load was imposed on the already contracting muscle. In both cases, lengthening of the active muscle was produced at a variety of speeds, from quite slow to "as fast as possible. " No differences in recruitment order were observed between isometric and lengthening contractions at any speed of lengthening contraction. It is concludedthat all contractions in normal humans recruit motor units in an orderly fashion from small to large, according to the size principle of motor unit recruitment. (C) 2001 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 12:39:19