@article{oai:nagoya.repo.nii.ac.jp:02006211,
 author = {三浦, 望慶 and MIURA, Mochiyoshi and 池上, 康男 and IKEGAMI, Yasuo and 松井, 秀治 and MATSUI, Hideji and 袖山, 絋 and SODEYAMA, Hiroshi},
 issue = {1},
 journal = {総合保健体育科学, Nagoya Journal of Health, Physical Fitness & Sports},
 month = {Mar},
 note = {Changes in pressure between ski and the snow surface and in the posture are most essential problems for clearing in skiing technique. The pourpose of this experiment was to examine the changes in posture and force exerted on the ski during straight run and snowplow skiing. Four skiers, two highly skilled and two intermediate skilled skier skid down a smoothed experimental slope (5.9°) 30 m long. Their trials included three body positions, normal and maximum forward and backward leaning for regular and snowplow straight runs. The forces detected by the strain gauges on the force plate, which was mounted on the ski beneath the boot, were summed to provide a continuous recording of the force and its point of application along the ski. A single 35 mm photo was taken as the skier passed the midpoint of the 30 m run. Joint angle of hip, knee and ankle joint were measured from the film. A 16 mm movie camera were positioned at the same place. The running speed during straight run and snowplow skiing were determined by means of this film. In the normal posture, the point of application of force during straight run were located slightly forward of the center of the boot (origin of X-Y coodination) and in snowplow, it was located directly over the center of the boot. The point of application of force was founded to be ranged from 200 to 300 mm in front of center of boot in forward leaning posture, and was almost same range. but behind, in backward leaning posture. The ranges, however, tend to be larger for the highly skilled skier than for the intermediate skier. Forward and backward postures during straight runs generate positive and negative torque respectively about the X-axis. In snowplow, torque is generated about the Y-axis. The magnitude of torque about X-axis seems to be the acting force to top of the ski. The torque of Y-axis appears to determine the degree of edging force. The ski turn is caused by resistance applied to the ski from the snow, and that the magnitude of snow resistance force was determined in terms of the edging angle and the torque about the X-axis. In the normal posture, there are almost the same posture highly skilled and intermediate skier. The angle of the hip and knee joints of a highly skilled skiers were larger than those of an intermediate skiers in both the forward and backward leaning posture. In the case of highly skilled skiers, greater flexion of hip and knee joints seem to be necessary to maintain body stability while skiing.},
 pages = {71--80},
 title = {スキ一直滑降およぴプルークにおける姿勢変化と荷重},
 volume = {3},
 year = {1980}
}