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Wyświetlanie 1-2 z 2
Tytuł:
Biomechanical influences on head posture and the respiratory movements of the chest
Autorzy:
Szczygieł, E.
Węglarz, K.
Piotrowski, K.
Mazur, T.
Miętel, S.
Golec, J.
Powiązania:
https://bibliotekanauki.pl/articles/306621.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
klatka piersiowa
głowa
postawa
chest
head
posture
Opis:
Purpose. The head represents 6% of total body weight, therefore it can significantly affect the biomechanics of human posture control, movements and activities. When set out of vertical body axis, head position interferes with the work of the other links in the kinematic chain. The aim of our study was to evaluate the effect of head posture on the breathing activities of the chest. Material and methods: The research was conducted on a group of 65 patients (51 years ± 9.8 years), including 48 women and 17 men. Head posture and chest movements were assessed using a photogrammetric method. Results: The results confirmed the existence of a negative correlation between head position in the sagittal plane and movements of lower ribs. Forward head posture resulted in lower amplitude of costal arch motion: for the transverse plane Spearman’s R = –0.296, for the frontal plane; –0.273, –0.289. Tilting the head in the frontal plane also influenced the change in the biomechanics of breathing and contributed to a reduction of respiratory movements of the lower ribs Spearman’s R = –0.260. Conclusions: Changing the position of the head causes disturbances in the three-dimensional shape of the chest and its respiratory movements.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 2; 143-148
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the front part of the vehicle and cyclist’s sitting position on the severity of head injury in side collision
Autorzy:
Fanta, O.
Boucek, J.
Hadraba, D.
Jelen, K.
Powiązania:
https://bibliotekanauki.pl/articles/307524.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
bicycle
biomechanics
head injury
multibody simulation
rower
biomechanika
głowa
symulacja
Opis:
An injury of cyclists during a collision with a car is currently a neglected topic. Most research projects evaluate in detail the injury of pedestrians, but with an increasing number of cyclists it will be necessary to devote more attention to their safety. This study is focused on the most common type of collision and offers insights into the biomechanics of cyclist’s head injury without the use of bicycle helmet. Initial mechanical and kinematic conditions that affect Head Injury Criterion (HIC) after a car hits a cyclist were determined using simulation software MADYMO. In relation to HIC, three different shapes of the front part of the car and three basic cyclist’s positions were compared.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 1; 105-112
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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