{"title":"影响撑杆跳高撑杆弯曲的力学因素","authors":"Takafumi Kageyuki, Takeo Matsubayashi, Tomoki Yamamoto, Fumiaki Kobayashi, T. Asai, Keigo Ohyama-Byun, Kiyonobu Kigoshi","doi":"10.5432/ijshs.202005","DOIUrl":null,"url":null,"abstract":"This study aimed to determine the best indicator to evaluate the ability to bend the pole and to clarify the mechanical factors that can influence pole bending with the run-up and pole in the same settings as those in competitions. Eight male vaulters (4.60 m to 5.77 m: personal best record) participated. Three-dimensional body coordinates were obtained using a motion capture system (250 Hz). In addition, the box reaction force was measured with a force plate (1000 Hz). The results were summarized as follows: re-spectively). (2) The larger the decrease in the translational energy and the smaller the increase in the potential energy in pole bending phase, the higher the E pole at MPB (r= −0.87 and −0.80, re-spectively). (3) The larger the moment of inertia around the CG and the upper grip at the instant where the negative peak value of the angular momentum around the CG appeared, the higher the E pole at MPB (r=0.75 and 0.79, respectively). These results suggested that the E pole was a more desirable indicator to evaluate the ability to bend the pole. Additionally, these results can serve as a basis for the practical application of techniques, namely, the swing motion with a fully extended posture.","PeriodicalId":341890,"journal":{"name":"International Journal of Sport and Health Science","volume":"86 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Mechanical Factors Influencing Bending of Pole in Pole Vault\",\"authors\":\"Takafumi Kageyuki, Takeo Matsubayashi, Tomoki Yamamoto, Fumiaki Kobayashi, T. Asai, Keigo Ohyama-Byun, Kiyonobu Kigoshi\",\"doi\":\"10.5432/ijshs.202005\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study aimed to determine the best indicator to evaluate the ability to bend the pole and to clarify the mechanical factors that can influence pole bending with the run-up and pole in the same settings as those in competitions. Eight male vaulters (4.60 m to 5.77 m: personal best record) participated. Three-dimensional body coordinates were obtained using a motion capture system (250 Hz). In addition, the box reaction force was measured with a force plate (1000 Hz). The results were summarized as follows: re-spectively). (2) The larger the decrease in the translational energy and the smaller the increase in the potential energy in pole bending phase, the higher the E pole at MPB (r= −0.87 and −0.80, re-spectively). (3) The larger the moment of inertia around the CG and the upper grip at the instant where the negative peak value of the angular momentum around the CG appeared, the higher the E pole at MPB (r=0.75 and 0.79, respectively). These results suggested that the E pole was a more desirable indicator to evaluate the ability to bend the pole. Additionally, these results can serve as a basis for the practical application of techniques, namely, the swing motion with a fully extended posture.\",\"PeriodicalId\":341890,\"journal\":{\"name\":\"International Journal of Sport and Health Science\",\"volume\":\"86 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-07-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Sport and Health Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5432/ijshs.202005\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Sport and Health Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5432/ijshs.202005","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Mechanical Factors Influencing Bending of Pole in Pole Vault
This study aimed to determine the best indicator to evaluate the ability to bend the pole and to clarify the mechanical factors that can influence pole bending with the run-up and pole in the same settings as those in competitions. Eight male vaulters (4.60 m to 5.77 m: personal best record) participated. Three-dimensional body coordinates were obtained using a motion capture system (250 Hz). In addition, the box reaction force was measured with a force plate (1000 Hz). The results were summarized as follows: re-spectively). (2) The larger the decrease in the translational energy and the smaller the increase in the potential energy in pole bending phase, the higher the E pole at MPB (r= −0.87 and −0.80, re-spectively). (3) The larger the moment of inertia around the CG and the upper grip at the instant where the negative peak value of the angular momentum around the CG appeared, the higher the E pole at MPB (r=0.75 and 0.79, respectively). These results suggested that the E pole was a more desirable indicator to evaluate the ability to bend the pole. Additionally, these results can serve as a basis for the practical application of techniques, namely, the swing motion with a fully extended posture.