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Wyszukujesz frazę "Motor units" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Motor unit involvement and activities in respiratory muscles during spirometric measurements of obstructive and restrictive lung diseases in 14-20 years male
Autorzy:
Nandy, P.
Sawoo, R.
Bhattacharyya, S.
Bandyopadhyay, A.
Powiązania:
https://bibliotekanauki.pl/articles/1918930.pdf
Data publikacji:
2020-06-10
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Motor units
respiratory muscles
lung volume
surface EMG
Opis:
Introduction: Breathing involves respiratory muscle activities by recruiting motor units. The obstructive and restrictive lung diseases were categorized based on spirometric measurement. Measurement of respiratory muscle function is important in the diagnosis of respiratory disease or dysfunction. Purpose: This study focuses on the involvement of motor units in diaphragm, external intercostals and latissimus dorsi muscles during voluntary contractions in young boys having obstructive and restrictive lung diseases. Materials and methods: Fifty eight young male (14-20 years) were participated and they were grouped into three (normal, restrictive and obstructive) according to their lung condition measured by Spirometry. One way ANOVA was done to understand the significant differences between the muscles of three groups. Involvement of motor unit was shown by plotting the Line diagrams. Mean and standard deviation along with one way ANOVA were calculated in case of three respiratory muscles (External intercostals, Diaphragm, and latissimus dorsi) for three groups. Results: No significant differences were found among three groups during performing Forced vital capacity (FVC), Slow vital capacity (SVC), Maximum voluntary ventilation (MVV), and Minute ventilation (MV). Line diagram shows that during FVC, SVC, and MVV responses of different muscles are higher in three different groups except during MV. Conclusion: This study states that motor unit involvement is different in the case of three different conditions. It can be concluded that restrictive and obstructive diseases might not be interpreted on the basis of only spirometric measurements in static and dynamic lung conditions. Motor unit activation and responses of major respiratory muscles were important determinants during spirometric measurements
Źródło:
Progress in Health Sciences; 2020, 10(1); 35-42
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on the Effect of Human Laterality, Type of Computer and Noise on Operators’ Performance of a Data Entry Task
Autorzy:
Khan, Z. A.
Rizvi, S. A. H.
Powiązania:
https://bibliotekanauki.pl/articles/90760.pdf
Data publikacji:
2009
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
equivalent noise level
motor-sidedness
visual display units
data entry task performance
Opis:
Effects of human laterality, type of computer and noise on computer operators’ performance of a data entry task were investigated. Seven right- and 7 left-motorsided male subjects performed the task on desktop and laptop computers in a sitting posture under varying noise levels. The mean number of characters entered per minute was statistically analysed. The right-motorsided operators entered more data than left-motorsided ones at each noise level. Operators performed better on desktop computers. Operators’ performance decreased when noise level increased from 82 to 92 dB(A) but it improved at 102 dB(A). Effects of laterality, type of computer and noise, and the interaction between laterality and noise were statistically significant. The interactions between laterality and type of computer, and type of computer and noise were statistically insignificant. Laterality was statistically significant at all noise levels and noise was statistically significant for right motor-sided operators only.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2009, 15, 1; 53-60
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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