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Titolo:
Neck muscle vibration disrupts steering of locomotion
Autore:
Bove, M; Diverio, M; Pozzo, T; Schieppati, M;
Indirizzi:
Univ Genoa, Dept Expt Med, Sect Human Physiol, I-16146 Genoa, Italy Univ Genoa Genoa Italy I-16146 Sect Human Physiol, I-16146 Genoa, Italy Fdn Don C Gnocchi, I-54037 Marina Massa, Italy Fdn Don C Gnocchi Marina Massa Italy I-54037 I-54037 Marina Massa, Italy Univ Pavia, Inst Physiol, I-27100 Pavia, Italy Univ Pavia Pavia Italy I-27100 Pavia, Inst Physiol, I-27100 Pavia, Italy Fdn Salvatore Maugeri, Inst Care & Res, I-27100 Pavia, Italy Fdn SalvatoreMaugeri Pavia Italy I-27100 re & Res, I-27100 Pavia, Italy Univ Bourgogne, Grp Anal Mouvement, F-21078 Dijon, France Univ Bourgogne Dijon France F-21078 nal Mouvement, F-21078 Dijon, France
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 2, volume: 91, anno: 2001,
pagine: 581 - 588
SICI:
8750-7587(200108)91:2<581:NMVDSO>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
VESTIBULAR STIMULATION; INTERACTIVE CONTRIBUTION; SUBJECTIVE STRAIGHT; HEAD STABILIZATION; HUMANS; WALKING; PROPRIOCEPTION; ORIENTATION; DIRECTION; RESPONSES;
Keywords:
proprioception; orientation; posture;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Schieppati, M Univ Pavia, Inst Human Physiol, Via Forlanini 6, I-27100 Pavia, Italy Univ Pavia Via Forlanini 6 Pavia Italy I-27100 Pavia, Italy
Citazione:
M. Bove et al., "Neck muscle vibration disrupts steering of locomotion", J APP PHYSL, 91(2), 2001, pp. 581-588

Abstract

Neck muscle vibration was applied to human subjects to assess the influences of neck abnormal proprioceptive input on the organization and execution of gait. Subjects walked blindfolded to a previously seen target, located straight ahead at similar to4 m. Vibration was applied on the right side of the neck, both during and before walking. The variables measured were length, duration, and velocity of trajectory; relative and absolute frontal errors at target; and width of walking support base. Vibration applied during locomotion produced an undershoot of target and deviation of gait trajectorytoward the side opposite to vibration. Vibration applied before locomotionproduced no effect on length of trajectory but slowing of velocity and nonsystematic deviation. When vibration frequency was increased, the amplitudeof the nonsystematic deviation increased. Vibration applied during or before stance trials had minor effects on body sway. Vibration before stance had no effect on the position of mean center of foot pressure, whereas vibration during stance displaced it to the side opposite to the vibrated muscle. We suggest that vibration during locomotion reduces length and velocity oftrajectory because of a direct action on the locomotor centers and produces trajectory deviation related to its effect on stance. Vibration before locomotion causes a major, nonsystematic deviation from the planned trajectory, possibly connected to a disorientation of the internal references.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 14:10:36