Physical activity is now a topic of global discussion in the contemporary health care market, specifically in the context of noncommunicable disease (NCD) prevention and health promotion. According to World Health Organization's estimate in 2005, physical inactivity was responsible for 1.9 million deaths globally which has increased to 3.2 million in 2008. Various studies suggest that the prevalence of physical inactivity is rising in both developed and developing counties. This pattern of increasing physical inactivity in many countries has major implications for increasing the prevalence of NCDs. NCDs will account for a projected 59% of deaths in Bangladesh by 2010. Because of the increase in NCDs, it is logical to assume that the prevalence of physical inactivity is high in Bangladesh. However, there is a lack of baseline data on physical activity using standardized methods in Bangladesh. Therefore, the objectives of this study were to provide baseline prevalences of physical activity levels in Bangladesh, identify correlates of physical activity, and explore difference in physical activity levels and correlates between adults living in urban versus rural settings in Bangladesh.

CCl4 is a halogen aliphatic hydrocarbon derived from methane with an aromatic sweet odor, and heavier than water in which it is sparingly soluble. Its use is very much restricted on account of the fact that its toxicity can manifest itself after simple inhaling. CCl4 has been widely used as a dry-cleaning solvent and in-fire-extinguishers because it is a non-flammable liquid. The experimental model of CCl4 treatment in rats has been extensively used to study liver fibrogensis. The bio-activation of CCl4 is complex and implicated both reductive and oxidative pathways. CCl4 is widely used to treat animals as a liver injury model because damage by CCl4 is regarded as the analogue of liver damage caused by a variety of hepatotoxins in humans. Liver disease is a worldwide problem; conventional drugs used in the treatment of liver disease are sometimes inadequate and can have serious adverse effects. It is; therefore, necessary to search for alternative drugs for treatment of liver disease to replace currently used drugs of doubtful efficacy and safety, so there is a worldwide trend to go back to traditional medicinal plants in use for treatment of liver ailments.