Detection of Foot Pressure Distribution for the Coaching in Ski - Jumping
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.20 Vol.20】
A system to measure a foot pressure distribution was constructed and applied to the field of competitive sport, i. e. ski jumping on normal hill.
The system consists of three parts, i. e., a pressure detection, a transmitter and a receiver for telemetry. A section for the pressure detection was made from pressure sensors, 6 and 2mm in their diameter and thickness respectively and the detector side of them was covered with thin square metal. The sensors were attached on the front and rear parts of the sole of both feet (planta pedis). The signals were led to wireless installation section on the waist of a subject and transmitted by radio wave (260MHz) to the last section composed of receiver and recorder equipments. After the confirmation of those function by the testing with walking and vertical jumping, foot pressure distribution in the real on-snow ski jumping was investigated and analyzed. The pressure signals from four sensors were all well recorded, and the change of its distribution related to a down hill decent and jumping could be evaluated. Unexpected high pressure was noticed after the thrust of taking off from a hill.
DESCENTE SPORTS SCIENCE Vol.20/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
The system consists of three parts, i. e., a pressure detection, a transmitter and a receiver for telemetry. A section for the pressure detection was made from pressure sensors, 6 and 2mm in their diameter and thickness respectively and the detector side of them was covered with thin square metal. The sensors were attached on the front and rear parts of the sole of both feet (planta pedis). The signals were led to wireless installation section on the waist of a subject and transmitted by radio wave (260MHz) to the last section composed of receiver and recorder equipments. After the confirmation of those function by the testing with walking and vertical jumping, foot pressure distribution in the real on-snow ski jumping was investigated and analyzed. The pressure signals from four sensors were all well recorded, and the change of its distribution related to a down hill decent and jumping could be evaluated. Unexpected high pressure was noticed after the thrust of taking off from a hill.
DESCENTE SPORTS SCIENCE Vol.20/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Kiyonori Kawahatsu*1, Koichi Shimizu*2, Toshiyuki Shimooka*2, Satoru Sasaki*2, Shieko Hareyama*3, Takahiro Uesugi*4 |
|---|---|
| University or institution | *1 Physical Education Center, Hokkaido University, *2 Graduate School of Engineering, Hokkaido University, *3 Hokkaido Women's University, Women's College, *4 The Cultural Institute of Northern Region, Hokkaido Tohkai University |
Keywords
Foot Pressure Distribution, ski jumping, walking, vertical jumping