these findings indicate that both the decrease in blood pressure and the unstable nature of the blood pressure response following upright tilt are useful predictors of falls in older people.

Abstract-Diesel exhaust can pose a significant health risk on exposure populations and workplace can be a significant source of exposure to diesel exhaust. Because of its complex compositions and the delay of advanced technology in exposure assessment, diesel exhaust exposure assessment at workplace in relation to its health effects is understudied. More efforts are needed to clarify exposure levels that may result in adverse health effects, in particular, chronic health effects.