pular para conteúdo
Muscular activity of different shooting distances, different release techniques, and different performance levels, with and without stabilizers, in target archery.
FecharVer prévia deste item
Checando...

Muscular activity of different shooting distances, different release techniques, and different performance levels, with and without stabilizers, in target archery.

Autor: JP Clarys Afiliação: Institute of Physical Education and Physiotherapy, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Belgium.J CabriE BollensR SleeckxJ TaeymansTodos os autores
Edição/Formato Artigo Artigo : Inglês
Publicação:Journal of sports sciences, 1990 Winter; 8(3): 235-57
Base de Dados:De MEDLINE®/PubMed®, uma base de dados da Biblioteca Nacional de Medicina dos EUA.
Resumo:
The quadruple approach in the title refers to four different studies over a period of 3 years. The common factor in these studies is the methodology of the (Brussels) Electromyographic Signal Processing and Analysis System (ESPAS), a hardware and software EMG data acquisition system that has constantly been improved. Therefore, the ESPAS methodology is described extensively (i.e. the electrodes, amplifier,  Ler mais...
Classificação:

(ainda não classificado) 0 com críticas - Seja o primeiro.

Mais como este

 

&AllPage.SpinnerRetrieving;

Encontrar uma cópia na biblioteca

&AllPage.SpinnerRetrieving; Encontrando bibliotecas que possuem este item...

Detalhes

Tipo de Documento: Artigo
Todos os Autores / Contribuintes: JP Clarys Afiliação: Institute of Physical Education and Physiotherapy, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Belgium.; J Cabri; E Bollens; R Sleeckx; J Taeymans; M Vermeiren; Van Reeth G; G Voss
ISSN:0264-0414
Nota do Idioma: English
Idenficador Único: 118765219
Prêmios:

Resumo:

The quadruple approach in the title refers to four different studies over a period of 3 years. The common factor in these studies is the methodology of the (Brussels) Electromyographic Signal Processing and Analysis System (ESPAS), a hardware and software EMG data acquisition system that has constantly been improved. Therefore, the ESPAS methodology is described extensively (i.e. the electrodes, amplifier, tape-recorder and processing hardware). Experiment 1 investigated muscular behaviour in target shooting, both indoors (18 and 25 m) and outdoors (50, 70 and 90 m). It was found (via iEMG) that a significant increase in activity only exists between 25 and 50 m, and that there is no linear increase of activity with increased distance. No differences in muscular pattern (IDANCO system: Clarys and Cabri, 1988) or activity between the indoor distances and between the outdoor distances were found. Experiment 2 investigated the muscular economy of four string grips: the three-finger grip, two-finger grip, thumb grip and reversed grip. The largest variations in activity were found for the two most unfamiliar grips, i.e. the thumb and reversed grips; however, low iEMG and the rapid precision improvement (over a limited number of shots) suggest that the thumb grip, if practised long enough, might be the most economical technique. Experiment 3 attempted to differentiate muscular activity and a number of performance variables in three different populations of archers--Olympic athletes, National competitors and beginners--in order to obtain feedback regarding improved performance. Apparently, overall muscle pattern, intensities and arrow speed were not discriminatory. The differences found between the groups (or levels of skill) were affected by the ability to reproduce identical patterns and arrow velocities in consecutive shots and by the constancy of neuromuscular control of the M. trapezius, M. biceps brachii and M. extensor digitorum. Finally, Experiment 4 investigated the muscular activity of elite archers shooting at distances of 70 and 90 m with and without stabilizers. Differences in iEMG were not supported by differences in precision. Over time, the low iEMG in shooting without stabilizers increases precision and delays fatigue.

Críticas

Críticas contribuídas por usuários
Recuperando críticas GoodReas...
Recuperando comentários DOGObooks

Etiquetas

Etiquetas de todos os usuários (2)

Ver as etiquetas mais populares como: lista de etiquetas | nuvem de etiquetas

Confirmar esta solicitação

Você já pode ter solicitado este item. Por favor, selecione Ok se gostaria de proceder com esta solicitação de qualquer forma.

Dados Ligados


<http://www.worldcat.org/oclc/118765219>
library:oclcnum"118765219"
owl:sameAs<info:oclcnum/118765219>
rdf:typeschema:Article
schema:about
schema:about
schema:contributor
schema:contributor
schema:contributor
schema:contributor
schema:contributor
schema:contributor
schema:contributor
schema:creator
schema:datePublished"1990-12-98"
schema:description"The quadruple approach in the title refers to four different studies over a period of 3 years. The common factor in these studies is the methodology of the (Brussels) Electromyographic Signal Processing and Analysis System (ESPAS), a hardware and software EMG data acquisition system that has constantly been improved. Therefore, the ESPAS methodology is described extensively (i.e. the electrodes, amplifier, tape-recorder and processing hardware). Experiment 1 investigated muscular behaviour in target shooting, both indoors (18 and 25 m) and outdoors (50, 70 and 90 m). It was found (via iEMG) that a significant increase in activity only exists between 25 and 50 m, and that there is no linear increase of activity with increased distance. No differences in muscular pattern (IDANCO system: Clarys and Cabri, 1988) or activity between the indoor distances and between the outdoor distances were found. Experiment 2 investigated the muscular economy of four string grips: the three-finger grip, two-finger grip, thumb grip and reversed grip. The largest variations in activity were found for the two most unfamiliar grips, i.e. the thumb and reversed grips; however, low iEMG and the rapid precision improvement (over a limited number of shots) suggest that the thumb grip, if practised long enough, might be the most economical technique. Experiment 3 attempted to differentiate muscular activity and a number of performance variables in three different populations of archers--Olympic athletes, National competitors and beginners--in order to obtain feedback regarding improved performance. Apparently, overall muscle pattern, intensities and arrow speed were not discriminatory. The differences found between the groups (or levels of skill) were affected by the ability to reproduce identical patterns and arrow velocities in consecutive shots and by the constancy of neuromuscular control of the M. trapezius, M. biceps brachii and M. extensor digitorum. Finally, Experiment 4 investigated the muscular activity of elite archers shooting at distances of 70 and 90 m with and without stabilizers. Differences in iEMG were not supported by differences in precision. Over time, the low iEMG in shooting without stabilizers increases precision and delays fatigue."
schema:exampleOfWork<http://worldcat.org/entity/work/id/99405930>
schema:isPartOf
schema:isPartOf
schema:name"Muscular activity of different shooting distances, different release techniques, and different performance levels, with and without stabilizers, in target archery."
schema:pageStart"235"
schema:url

Content-negotiable representations

Close Window

Por favor, conecte-se ao WorldCat 

Não tem uma conta? Você pode facilmente criar uma conta gratuita.