Conclusions : Neck pain was not significantly associated with high job dem and s , low skill discretion , low decision authority , or low peer support .
However , when these variables were combined with increased duration of computing tasks , or ergonomic dem and s , they reached significance .
Supervisor support was found to be the only significant buffer capable of preventing these variables reaching significance in female office workers
Introduction : The purpose of this systematic review was to examine literature on workplace factors associated with  neck pain or symptoms in computer users performing clerical functions .
Changes in microcirculation of the trapezius muscle during a prolonged computer task
The aim of this study is to investigate if there is a change in oxygen saturation and blood flow in the different parts of the trapezius muscle in office workers with and without trapezius myalgia during a st and ardized computer task .  Twenty right-h and ed office workers participated ; ten were recruited based on pain in the trapezius and ten as matching controls . Subjects performed a combination of typing and mousing tasks for 60 min at a st and ardized workstation .  Muscle tissue oxygenation and blood flow data were collected from the upper trapezius ( UT ) , the middle trapezius ( MT ) and the lower trapezius ( LT ) , both on the left and right side at seven moments ( at baseline and every tenth minute during the 1-h typing task ) by use of the oxygen to see device . In all three parts of the trapezius muscle , the oxygen saturation and blood flow decreased significantly over time in a similar pattern ( p < 0.001 ) . Oxygenation of the left and right UT was significantly higher compared to the other muscle parts ( p < 0.001 ) . Oxygen saturation for the MT was significantly lower in the cases compared to the control group ( p = 0.027 ) . Blood flow of the UT on the right side was significantly lower than the blood flow on the left side ( p = 0.026 ) . The main finding of this study was that 1 h of combined workstation tasks result ed in decreased oxygen saturation and blood flow in all three parts of the trapezius muscle . Future research should focus on the influence of intervention strategies on these parameters
Conclusions : Neck pain was not significantly associated with high job dem and s , low skill discretion , low decision authority , or low peer support .
However , when these variables were combined with increased duration of computing tasks , or ergonomic dem and s , they reached significance .
Supervisor support was found to be the only significant buffer capable of preventing these variables reaching significance in female office workers
Introduction : The purpose of this systematic review was to examine literature on workplace factors associated with  neck pain or symptoms in computer users performing clerical functions .