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Aaron J. Beach René E. D. Ferdinands Peter J. Sinclair 《Sports biomechanics / International Society of Biomechanics in Sports》2016,15(3):295-313
Spin bowling is generally coached using a standard technical framework, but this practice has not been based upon a comparative biomechanical analysis of leg-spin and off-spin bowling. This study analysed the three-dimensional (3D) kinematics of 23 off-spin and 20 leg-spin bowlers using a Cortex motion analysis system to identify how aspects of the respective techniques differed. A multivariate ANOVA found that certain data tended to validate some of the stated differences in the coaching literature. Off-spin bowlers had a significantly shorter stride length (p = 0.006) and spin rate (p = 0.001), but a greater release height than leg-spinners (p = 0.007). In addition, a number of other kinematic differences were identified that were not previously documented in coaching literature. These included a larger rear knee flexion (p = 0.007), faster approach speed (p < 0.001), and flexing elbow action during the arm acceleration compared with an extension action used by most of the off-spin bowlers. Off-spin and leg-spin bowlers also deviated from the standard coaching model for the shoulder alignment, front knee angle at release, and forearm mechanics. This study suggests that off-spin and leg-spin are distinct bowling techniques, supporting the development of two different coaching models in spin bowling. 相似文献
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全球的技术产业都处于生态学转向中,要实现这一转向,达到人、技术、自然的和谐,对传统的技术创新进行反思就不可或缺。传统的技术创新哲学的困境在于机械还原论和人类中心主义的价值观,而生态学转向运动是实现突围的必然抉择。因此,生态学转向要在技术创新体系的各层次展开,才能彻底完成转向。 相似文献
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It is obvious that body becomes one of the focuses of modern cultural studies. However, philosophy is the root of cultural tree. To penetrate the cultural phenomenon, philosophy provides an insight. Within the western traditional dualism of body and spirit, body goes through ups and downs. Understanding this philosophical swerve of body leads us to catch on those cultural changes. 相似文献
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章就自行车赛的转弯技术，查阅相关献、咨询有关专家，进行力学分析等，旨在为自行车运动的发展提供一定参考依据，也可供自行车代步或休闲健身参考。 相似文献
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