[Purpose] The purpose of this study was to investigate the effects of different height of high heels on muscle activation of the paraspinalis cervicis and erector spinae in healthy young women. [Subjects and Methods] Thirteen healthy women were recruited in this study. To examine the effects of different heights of heels on muscle activation, the paraspinalis cervicis (cervical spine) and erect...

The aim of the following study is to analyze the mechanical efficiency on heart rate frequency and oxygen consumption during exercise bicycle test. The following study included seven respondents (men) aged 19-28 years, all students in the National Sports Academy “Vassil Levski” (Sofia, Bulgaria) – specialists in cycling. During two consecutive days, they were administered to sub maximal bicycle...

Abstract Horizontal T-foils allow for maximum lift generation within a given span. However, the force on T-foil acts symmetry plane of hull, thereby producing no righting moment. It results in lack transverse stability during foil-borne sailing. In this paper, we propose system, where height-regulating flap trailing edge foil is split into port and starboard part, whose deflection angles are ad...

CHICAGO — Many of today's running shoes feature a heavy cushioned heel. New research presented today at the 2013 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS) found that these shoes may alter an adolescent runner's biomechanics (the forces exerted by muscles and gravity on the skeletal structure) and diminish performance. Researchers recruited 12 adolescent competitive a...