Srpski arhiv za celokupno lekarstvo 2016 Volume 144, Issue 3-4, Pages: 181-187
https://doi.org/10.2298/SARH1604181P
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Posture in dentists: Sitting vs. standing positions during dentistry work - an EMG study
Pejčić Nataša (Faculty of Dental Medicine, Department of Preventive and Pediatric Dentistry, Belgrade)
Đurić-Jovičić Milica (School of Electrical Engineering, Innovation Center, Belgrade)
Miljković Nadica (Tecnalia Serbia Ltd., Belgrade + Faculty of Electrical Engineering, Belgrade)
Popović Dejan B. (Faculty of Electrical Engineering, Belgrade + Center for Sensory Motor Interaction, Aalborg University, Aalborg, Denmark)
Petrović Vanja (Faculty of Dental Medicine, Department of Preventive and Pediatric Dentistry, Belgrade)
Introduction. Adequate working posture is important for overall health.
Inappropriate posture may increase fatigue, decrease efficiency, and
eventually lead to injuries. Objective. The purpose was to examine posture
positions used during dentistry work. Methods. In order to quantify different
posture positions, we recorded muscle activity and positions of body
segments. The position (inclination) data of the back was used to assess two
postures: sitting and standing during standard dental interventions. Results.
During standard interventions, whether sitting or standing, a tilt of less
than 20 degrees was most prevalent in the forward and lateral flexion
directions. Amplitude of electromyography signals corresponding to the level
of muscle activity were higher in sitting compared with the electromyography
in standing position for all muscle groups on the left and right side of the
body. Significant difference between muscle activity in two working postures
was evident in splenius capitis muscle on the left (p = 0.032), on the right
side of the body (p = 0.049) and in muscle activity of mastoid muscle on the
left side (p = 0.029). Conclusion. These findings show that risk for
increased fatigue and possible injures can be reduced by combining the
sitting and standing occupational postures.
Keywords: work posture, electromyography, inclinometers, ergonomics, occupational health
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