In competitive rowing, the fluctuations in boat velocity during the rowing cycle are associated with an increased water resistance of the boat as compared with a boat moving at a constant velocity. We aimed to quantify the influence of the increased water resistance on race time using a mathematical approximation, based on the increase in physiological power being proportional to the 2nd power ...

BACKGROUND prolonged and laborious activities involving wrists and forearms has been long associated with the onset of epicondylitis. Slalom water-skiing can be included in this category. The purpose of the study is to analyse the correlation between the pronated or supinated position of forearms during water-skiing practice and the presence respectively of lateral and medial epicondylitis. M...

On water rowing training greatly benefits from sonification. However, no real-time usable smartphone based platform exists for acquisition and sonification of data measured during rowing. We propose the use of a smartphone based system, coupled with an Accrow (BeSB) data acquisition device. The whole system is able to convey the produced sound within 100ms from the movement, thus enabling the p...

Abstract Water strider (Gerridae) morphology and behavior have become the focus of interdisciplinary research in biological diversification bio-inspired technology. However, diversity behaviors large-sized Gerridae not been intensely studied. Here, we provide locomotory legs’ micro-morphology large South-East Asian water strider, Ptilomera tigrina . Using high-speed videography experiments natu...

The metabolism of swimming in the platypus Ornithorhynchus anatinus Shaw was studied by measurement of oxygen consumption in a recirculating water flume. Platypuses swam against a constant water current of 0.45-1.0 ms-1. Animals used a rowing stroke and alternated bouts of surface and submerged swimming. Metabolic rate remained constant over the range of swimming speeds tested. The cost of tran...

Looking at the current technology of water skiing equipment, it isn’t hard to trace its roots. Ralph Samuelson successfully skied on Lake Pepin in Lake City, MN in 1922. He was the first recorded person to water ski. His skis consisted of two pine boards with leather bindings (Winkler, 2009). From this modest beginning came the old style flat bottomed and square tailed skis that were standard f...