Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effects of resistance training in humans on neck muscle performance, and electromyogram power spectrum changes
Autore:
Portero, P; Bigard, AX; Gamet, D; Flageat, JR; Guezennec, CY;
Indirizzi:
Grp Hosp Pitie Salpetriere, Inst Myol, F-75651 Paris 13, France Grp Hosp Pitie Salpetriere Paris France 13 yol, F-75651 Paris 13, France Serv Sante Armees, Inst Med Aerosp, Dept Neurophysiol Appliquee, F-91223 Bretigny Sur Orge, France Serv Sante Armees Bretigny Sur Orge France F-91223 igny Sur Orge, France Serv Sante Armees, Ctr Rech, Unite Bioenerget & Environm, F-38702 La Tronche, France Serv Sante Armees La Tronche France F-38702 , F-38702 La Tronche, France Univ Technol Compiegne, Ctr Natl Rech Sci 6600, Unite Mixte Rech, Dept Genie Biol, F-60206 Compiegne, France Univ Technol Compiegne Compiegne France F-60206 -60206 Compiegne, France Hop Begin, Serv Imagerie Med, Paris, France Hop Begin Paris FranceHop Begin, Serv Imagerie Med, Paris, France
Titolo Testata:
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 6, volume: 84, anno: 2001,
pagine: 540 - 546
SICI:
1439-6319(200106)84:6<540:EORTIH>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CROSS-SECTIONAL AREA; SURFACE ELECTROMYOGRAM; MAGNETIC-RESONANCE; HUMAN QUADRICEPS; STRENGTH; EXERCISE; EMG; ACCUMULATION; CONTRACTIONS; SPECIFICITY;
Keywords:
neck muscles; strength training; hypertrophy; electromyogram spectrum analysis; fatigue;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Portero, P Grp Hosp Pitie Salpetriere, Inst Myol, 83 Bd Hop, F-75651 Paris13, France Grp Hosp Pitie Salpetriere 83 Bd Hop Paris France 13 3, France
Citazione:
P. Portero et al., "Effects of resistance training in humans on neck muscle performance, and electromyogram power spectrum changes", EUR J A PHY, 84(6), 2001, pp. 540-546

Abstract

The purpose of this study was to quantify the neuromuscular cervical adaptations to an 8 week strength training programme. Seven healthy men, with nopathological conditions of the neck, performed a lateral flexion isometricresistance-training programme three times a week. The training sessions consisted of one set of ten contractions, each of 6 s duration, at 60% of thepredetermined maximal voluntary isometric torque (MVTim (warm-up) and two sets of eight contractions, each of 6 s duration, at 80% MVTim,,. The training effects were evaluated in three ways: muscle size, strength and fatigability. The cross-sectional areas (CSA) of the trapezius (TRP) and sternocleidomastoideus (SCM) muscles were determined using a computerised tomographic scanner. Results showed an increase in the CSA of TRP and SCM muscles after training, 8.8% at C5 level and 6.4% at C7 level for SCM muscle and 12.2%at C7 level for TRP muscle. Strength increased significantly under both isometric and isokinetic conditions (35% and 20%, respectively). Muscle fatigability in lateral flexion was quantified during a sustained isometric contraction at 50% of MVTim The shift of the mean power frequency of the electromyogram power spectrum density function of SCM muscle toward lower frequencies was less after training (14.6% compared to 6.8%). These results indicate the beneficial effect of a strength-training programme which increases neck muscle size and strength during lateral flexion, and decreases the fatigability of the superficial muscles of the neck.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/06/20 alle ore 05:02:05