Pejcić Natasa, Jovicić Milica Đurić, Miljković Nadica, Popović Dejan B, Petrović Vanja
Srp Arh Celok Lek. 2016 Mar-Apr;144(3-4):181-7.
Adequate working posture is important for overall health. Inappropriate posture may increase fatigue, decrease efficiency, and eventually lead to injuries.
The purpose was to examine posture positions used during dentistry work.
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.
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).
These findings show that risk for increased fatigue and possible injures can be reduced by combining the sitting and standing occupational postures.
合适的工作姿势对整体健康很重要。不当姿势可能会增加疲劳感、降低效率，并最终导致受伤。
本研究旨在调查牙科工作期间所采用的姿势。
为了量化不同的姿势，我们记录了肌肉活动和身体各部位的位置。背部的位置（倾斜度）数据用于评估两种姿势：标准牙科干预过程中的坐姿和站姿。
在标准干预过程中，无论是坐姿还是站姿，向前和侧方屈曲方向上小于20度的倾斜最为普遍。身体左右两侧所有肌肉群的肌电图信号幅度（对应肌肉活动水平）在坐姿时均高于站姿时的肌电图信号幅度。两种工作姿势下的肌肉活动在左侧头夹肌（p = 0.032）、身体右侧头夹肌（p = 0.049）以及左侧乳突肌的肌肉活动（p = 0.029）方面存在显著差异。
这些研究结果表明，通过结合坐姿和站姿的职业姿势，可以降低疲劳增加和可能受伤的风险。
