Temat: upper limb disorders - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Relevance of the EMG/Grip Relationship in Isometric Anisotonic Conditions
Autorzy:: Claudon, L.
Powiązania:: https://bibliotekanauki.pl/articles/91069.pdf
Data publikacji:: 2003
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: cumulative trauma disorders
upper limb
electromyogram (EMG)
force
isometric contraction
anisotonic contraction
schorzenia kończyn górnych
uraz kończyny górnej
kończyna górna
nadgarstek
ręka
Opis:: The aim of the present study was to develop a relationship to evaluate grip force using the electromyogram (EMG) in isometric anisotonic conditions. The EMGs of the flexor digitorum superficialis (FDS) and the extensor digitorum (ED) were recorded in 3 flexion-extension positions of the wrist (30° flexion, 30° extension, and 60° extension) associated with 3 positions of the forearm (70° pronation, prono-supination, and 70° supination). For each position, the participants had to follow linear ramp targets (2 rates of increase and decrease) displayed on an oscilloscope. The results show the best fit is a quadratic type force-EMG relationship. Some aspects such as the rate of force variation and the forearm and wrist positions are then discussed along with the limitations of the relationship.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2003, 9, 2; 121-134
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Examining RULA`s Postural Scoring System With Selected Physiological and Psychophysiological Measures
Autorzy:: Fountain, L. J. K.
Powiązania:: https://bibliotekanauki.pl/articles/89828.pdf
Data publikacji:: 2003
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: RULA
upper limb disorders
musculoskeletal disorders
working posture
EMG
perceived discomfort
job attitude
Opis:: The Rapid Upper Limb Assessment (RULA) survey is a posture-sampling tool used specifically to examine the level of risk associated with upper limb disorders of individual workers. This paper examines the relationship between RULA’s postural scoring system and measures of surface electromyography (EMG), self-reports of discomfort, and job attitude questionnaires. Twenty participants each performed a 30-min typing task on a computer in 3 working postures based on RULA’s scoring system. A statistically significant difference was found only in perceived discomfort. The perceived discomfort results demonstrated that RULA was able to identify “high risk” postures. The next question we need to ask is, does perceived discomfort result in tissue damage, or does tissue damage yield discomfort?
Źródło:: International Journal of Occupational Safety and Ergonomics; 2003, 9, 4; 383-392
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Evaluation of Grip Force Using Electromyograms in Isometric Isotonic Conditions
Autorzy:: Claudon, L.
Powiązania:: https://bibliotekanauki.pl/articles/91101.pdf
Data publikacji:: 1998
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: cumulative trauma disorders
biomechanical stresses
upper limb
kończyna górna
biomechanika
nadgarstek
Opis:: The purpose of this study was to develop a relationship to evaluate the grip force (forcerel) using the electromyogram (EMGrel) of the flexor digitorum superficialis (FDS) and of the extensor digitorum (ED) according to the flexion-extension wrist angle (0t-e) and to the pronation-supination forearm angle (0p-s). Fifteen participants had to exert 3 levels of grip forces in 4 positions of the wrist combined with 3 positions of the forearm. The relationship is: forcerel = 0.0045 • 0t-e • EMGrel(FDS) + 0.48 • EMGrel(FDS)-0.0014 • 0t-e • EMGrel(ED) -0 .0016 • 0p-s • EMGrel(ED) • 0.4- EMGrel(ED) This relationship can be used to estimate grip force for levels of strength lower than 50% of the maximal voluntary contraction.
Źródło:: International Journal of Occupational Safety and Ergonomics; 1998, 4, 2; 169-184
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

Artykuł

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