Purpose The aim of this study was to investigate the anthropometric characteristics of elite taekwondo players based on weight categories,and to determine if the length of the lower extremities might influence player...Purpose The aim of this study was to investigate the anthropometric characteristics of elite taekwondo players based on weight categories,and to determine if the length of the lower extremities might influence player’s success-level.A total of 59 elite male taekwondo players(22.02±3.07 years)participated in this study.Methods All anthropometric assessments were performed according to the standards and methodology of the International Society for Advancement of Kinanthropometry.The 18 anthropometrical variables were measured for each athlete and compared between 7 different weight categories.The players were also divided into two groups(national and international)and the ratios of sitting-height to stature were compared.Results There were significant differences(P<0.05)between weight divisions in stature,body mass index,percentage of body fat,endomorphy,and mesomorphy,which were greater(P<0.05)in heavy weight groups than light weight groups,and ectomorphy,which was greater(P<0.05)in very light weight groups compared with the other weights.There was no significant difference in lean mass index(P>0.05)between weight groups.Sitting height/stature ratio was significantly dif-ferent(P<0.05)between the two groups,where the international group had longer lower extremities than the national group.Conclusion The findings of this study provide a valuable framework to support talent identification programmes and the development of specialised preparatory strategies for different weight divisions with the sport.展开更多
The index system of regional industrial structure is set up. There are two delaminated levels, the top layer evaluation and the bottom one on which the top evaluation is based. That is the characteristics of the evalu...The index system of regional industrial structure is set up. There are two delaminated levels, the top layer evaluation and the bottom one on which the top evaluation is based. That is the characteristics of the evaluation of regional industry structure. The distinction between the two evaluation levels involves the two essentially different two index weights, the unsscertalned comprehensive evaluating model together with division weight are used in the bottom evaluation, and expert weight in the top layer evaluation. In view of the evaluation of regional industrial structure, a sort of comparatively reasonable utility evaluation model is set up. Take the case of Beijing and other six provinces and cities is positively analyzed, which reflects the actual regional industrial structure.展开更多
文摘Purpose The aim of this study was to investigate the anthropometric characteristics of elite taekwondo players based on weight categories,and to determine if the length of the lower extremities might influence player’s success-level.A total of 59 elite male taekwondo players(22.02±3.07 years)participated in this study.Methods All anthropometric assessments were performed according to the standards and methodology of the International Society for Advancement of Kinanthropometry.The 18 anthropometrical variables were measured for each athlete and compared between 7 different weight categories.The players were also divided into two groups(national and international)and the ratios of sitting-height to stature were compared.Results There were significant differences(P<0.05)between weight divisions in stature,body mass index,percentage of body fat,endomorphy,and mesomorphy,which were greater(P<0.05)in heavy weight groups than light weight groups,and ectomorphy,which was greater(P<0.05)in very light weight groups compared with the other weights.There was no significant difference in lean mass index(P>0.05)between weight groups.Sitting height/stature ratio was significantly dif-ferent(P<0.05)between the two groups,where the international group had longer lower extremities than the national group.Conclusion The findings of this study provide a valuable framework to support talent identification programmes and the development of specialised preparatory strategies for different weight divisions with the sport.
基金This project is supported by National Natural Science Foundation of China（60474019）.
文摘The index system of regional industrial structure is set up. There are two delaminated levels, the top layer evaluation and the bottom one on which the top evaluation is based. That is the characteristics of the evaluation of regional industry structure. The distinction between the two evaluation levels involves the two essentially different two index weights, the unsscertalned comprehensive evaluating model together with division weight are used in the bottom evaluation, and expert weight in the top layer evaluation. In view of the evaluation of regional industrial structure, a sort of comparatively reasonable utility evaluation model is set up. Take the case of Beijing and other six provinces and cities is positively analyzed, which reflects the actual regional industrial structure.
