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AIMS The aim of this study was to determine differences in the acute and chronic impact of adaptive servo-ventilation (ASV) on left chamber geometry and function in patients with chronic heart failure (CHF). METHODS AND RESULTS An acute ASV study was performed to measure echocardiographic parameters before and 30 min after the initiation of ASV therapy in(More)
BACKGROUND AND PURPOSE The details of risky psychosocial job characteristics related to insomnia are unclear, although potential relationships between the two have been suggested. The study objective was to clarify these relationships by using the demand-control-support (DCS) model and the effort-reward imbalance (ERI) model. PATIENTS AND METHODS A(More)
The present study reviews empirical studies of a new occupational stress model of effort-reward imbalance at work to examine its validity as an occupational stress measure and the theory-based intervention approach to occupational stress reduction. The effort-reward imbalance model is valid for demonstrating a stressful work environment that reflects the(More)
OBJECTIVE To examine the prospective effects of psychosocial job characteristics evaluated with the Demand-Control-Support (DCS) and Effort-Reward Imbalance (ERI) models on insomnia. METHODS A prospective cohort study with a two-year observation was performed. The subjects were 1022 middle-aged (>or= 39 years) Japanese workers. The following associations(More)
OBJECTIVE To explore the effect of participatory intervention for workplace improvement on mental health and job performance. METHODS Eleven assembly lines were randomly allocated to six intervention and five control lines (47 and 50 workers, respectively). The primary outcome was defined as the improvement in the following measures during the(More)
Associations between job characteristics defined by the Karasek's job demand-control model and health behaviors were investigated in a cross-sectional analysis of 6,759 Japanese rural workers. High psychological demands were associated with heavy smoking, exaggerated prevalence of alcohol drinking, and high work-related physical activity. Low job control(More)
We prospectively investigated the association between psychosocial job characteristics according to the job demand-control model and the risk of mortality in a Japanese community-based working population. A baseline examination conducted from 1992 to 1995 determined the socioeconomic, behavioural, and biological risks in addition to the psychosocial job(More)
As job stress is now one of the biggest health-related problems in the workplace, several education programs for supervisors have been conducted to reduce job stress. We conducted a supervisor-based randomized controlled trial to evaluate the effects of an education program on their subordinates' psychological distress and job performance. The subjects were(More)
BACKGROUND A randomized controlled trial was conducted to determine the effects of web-based supervisor training on worksite mental health on supervisor support and psychological distress among subordinate workers. METHODS Section chiefs in a computer engineering company were randomly assigned to either a training group (n = 9) or a non-training group (n(More)
Study objective—To explore the association between job characteristics and plasma fibrinogen concentrations. Design—Cross sectional design. Setting—The Greater Stockholm area. Subjects—A total of 1018 men and 490 women aged 45–70 who were randomly selected from the general population during 1992–1994. They were all employed and had no history of myocardial(More)