@article{oai:biwako-seikei.repo.nii.ac.jp:00002812,
 author = {青木, 豊明 and Aoki,  Toyoaki},
 issue = {3},
 journal = {研究紀要 ＝ Bulletin of Biwako Seikei Sport College},
 month = {Mar},
 note = {In this research, a new impact hammer equipment was applied to study the surface impact of the outdoor sports surfaces such as the artificial turf, the natural turf, the artificial athletic track, the clay track, and the tennis court in Biwako Seikei Sport College. The values of impact acceleration（Ia）which were outputs from the detector with the impact hammer, were the same within one day at the same site of the tested sports surfaces. The values of Ia at the outdoor sports surfaces were as follows ; tennis court>artificial athletic track>clay track>natural turf>artificial turf. The force reduction ratio（Fr）derived from the value of Ia was effective in estimating the impact of the sports surfaces.},
 pages = {71--77},
 title = {新規衝撃試験機を用いる屋外スポーツサーフェスの衝撃度の評価},
 year = {2006},
 yomi = {アオキ, トヨアキ}
}