The golf swing involves a complex sequence of body movements which adjust according to the demands of a given shot. The purpose of this study was to determine common characteristics and essential elements of the golf swing under various conditions. The swing patterns of thirteen elite professional golfers were analyzed...
The kinematic characteristics of 17 elite male cross-country skiers competing in the 50 km race of the 1992 Winter Olympic Games were determined. Each skier used the open field skating technique, one of four skating techniques used in free technique cross-country ski races. Skiers were filmed by the use of...
This investigation examined the possible role of musculoskeletal forces in the
human walk-run transition. In order to measure these forces a treadmill was constructed
which allowed the measurement of vertical ground reaction forces while subjects walked
and ran at prescribed speeds. Validation proved the device to be accurate and reliable...
The purpose of this study was to determine kinetic and kinematic
characteristics of Thai Boxing Roundhouse Kicks. In order to measure the kinetic
variables of peak force and impulse, a triaxial accelerometer was inserted into a
kicking bag. The force data were derived from the known mass and measured
acceleration...
Mountain bike suspension forks have been developed to reduce the
accelerations transmitted to the rider. However, the effectiveness of
suspension forks has not been systematically investigated. It was the goal of
this project to quantify the amount of impact acceleration damping afforded
by three stiffness settings of suspension forks compared...
Fast medio-lateral movements, frequent in a number of sports activities, are associated with lower extremity injuries. These injuries may occur as a result of excessive musculoskeletal stresses on the joints and their associate structures. The purpose of this study was to investigate the effect of running speed and turning movement...
Introduction: Recent reports in exercise related bone research have shown increased bone mineral content (BMC) at the femoral neck for prepubescent children participating in exercise programs consisting of repeated drop landings from a height of 61 cm. Increases in BMC from this type of exercise are believed to be the...
The aim of the present project was to quantify and compare differences in impact performance and damping effectiveness among various off-road bicycle suspension systems. Two experiments were conducted to compare suspensions. Fork impact performance was tested by measuring peak antero-posterior braking forces and impulses during impact with bumps of 6-...
During heel-toe running, the vertical ground reaction force (VGRF) profile has both impact and active peaks. Although the mass-spring model (a single mass and a linear spring) is simple and useful to predict running characteristics, its simulation of VGRF profiles produces only a single peak rather than the double peak...