PubMed · 8928115
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L Arvesen. 1996-08-30. [Physicians' waiting room].. https://pubmed.ncbi.nlm.nih.gov/8928115/
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Small workspaces function as integrated systems, yet ergonomic furniture and indoor environmental conditions are usually evaluated separately. A six-site, assessor-blinded, randomized 2 × 2 factorial controlled study was conducted of two multicomponent packages-adjustable furniture and optimized indoor environmental quality (IEQ)-among 240 office workers for four weeks. Each group included 60 participants. Overall comfort in week 4 was highest for both packages (5.62 ± 0.53 versus 3.99 ± 0.60 with fixed furniture and basic IEQ). In a site-adjusted factorial model with HC3 robust standard errors, the adjustable-furniture effect was 0.86 points (95% confidence interval [CI], 0.62-1.09), the optimized-IEQ effect was 0.34 points (95% CI, 0.12-0.55), and their interaction was 0.44 points (95% CI, 0.14-0.74). Adjustable furniture improved postural comfort and reduced neck and lower back discomfort; optimized IEQ improved environmental comfort; both packages improved perceived productivity, satisfaction, and fatigue. The task-accuracy interaction did not remain significant after false-discovery-rate adjustment, and exploratory mediation and spline analyses did not support indirect or nonlinear effects. These results support coordinated ergonomic and environmental implementation while preserving distinct outcome pathways.
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A newly designed operator chair is suspended by a floor stand and a horizontal arm that rotates and is adjustable for length. The suspension system is equipped with magnetic locks that enable the surgeon instantaneously to take desired positions in a horizontal plane. The height of the chair is controlled electrically. The foot plate, which is in one piece with the chair, has 18 switches for the microscope, chair, bipolar coagulator, camera, and so on. This comfortable and multifunctional chair is an important microneurosurgical tool not only for minimizing the physical fatigue of the surgeon but also for performing refined techniques.