The use of elliptical chainrings (also called chainwheels or sprockets) has gained considerable interest in the amateur and professional cycling community. Nevertheless, we are unaware of any scientific studies that have examined the performance benefits of using elliptical chainrings during an actual performance trial. Therefore, this study examined the influence of elliptical chainring use on...

BACKGROUND Complementary and alternative medicine (CAM) is commonly used to treat back pain, but little is known about factors associated with improvement. METHODS We used data from the 2002 National Health Interview Survey to examine the associations between the perceived helpfulness of various CAM therapies for back pain. RESULTS Approximately 6% of the US population used CAM to treat the...

The paper proposes a unified risk-benefit analysis framework for investigating consumers’ adoption of mobile payment technology. Based on perceived risk theory and risk-benefit analysis literature, the proposed framework integrates three variables—perceived risk, perceived benefit and perceived value, to predict consumers’ intention to use mobile payment. All the proposed hypotheses are well su...

The study integrates technological factors (web quality: system quality, information quality, and service quality) and social quality factors (perceived benefit, perceived interactivity and perceived trust) to explore the ECommerce model of health websites. The findings show that technological factors have all significantly positive effect on social psychological factors. This study also confir...