The two eligible studies for this review provide moderate evidence that saddle seats provided lower ergonomic risk than conventional seats in the examined population of dental students
OBJECTIVE This study aim ed to verify whether the saddle seat provides lower ergonomic risk than conventional seats in dentistry .
Assessment of psychosocial risk factors for the development of non-specific chronic disabling low back pain in Japanese workers—findings from the Japan Epidemiological Research of Occupation-related Back Pain (JOB) study
To investigate the associations between psychosocial factors and the development of  chronic disabling low back pain ( LBP ) in Japanese workers . A 1 yr prospect i ve cohort of the Japan Epidemiological Research of Occupation-related Back Pain ( JOB ) study was used . The participants were office workers , nurses , sales/marketing personnel , and manufacturing engineers . Self-administered question naires were distributed twice : at baseline and 1 yr after baseline . The outcome of interest was the development of chronic disabling LBP during the 1 yr follow-up period . Incidence was calculated for the participants who experienced disabling LBP during the month prior to baseline . Logistic regression was used to assess risk factors for chronic disabling LBP . Of 5,310 participants responding at baseline ( response rate : 86.5 % ) , 3,811 completed the question naire at follow-up . Among 171 eligible participants who experienced disabling back pain during the month prior to baseline , 29 ( 17.0 % ) developed chronic disabling LBP during the follow-up period . Multivariate logistic regression analysis implied reward to work ( not feeling rewarded , OR : 3.62 , 95%CI : 1.17–11.19 ) , anxiety ( anxious , OR : 2.89 , 95%CI : 0.97–8.57 ) , and daily-life satisfaction ( not satisfied , ORs : 4.14 , 95%CI : 1.18–14.58 ) were significant . Psychosocial factors are key to the development of chronic disabling LBP in Japanese workers .  Psychosocial interventions may reduce the impact of LBP in the workplace
The two eligible studies for this review provide moderate evidence that saddle seats provided lower ergonomic risk than conventional seats in the examined population of dental students
OBJECTIVE This study aim ed to verify whether the saddle seat provides lower ergonomic risk than conventional seats in dentistry .