Exploring the mechanism of skilled overarm throwing.
نویسندگان
چکیده
Although the kinematics and dynamics of overarm throws, such as baseball pitching, have been studied extensively, the relations between these measures remain largely unknown. This review uses a three-dimensional analysis to characterize the mechanical basis of skilled overarm throws by focusing on how each joint angular acceleration is produced by the muscle torques, gravity torques, and velocity-dependent torques.
منابع مشابه
The Role of Humeral Elevation of the Non-throwing Arm on Maximum Ball Velocity in Unconstrained Overarm Throw
The purpose of this study was to identify the role of humeral elevation of the non-throwing arm in relation to maximum ball velocity (MBV) in unconstrained overarm throws in children aged 12-14. 3D motion analysis was used to investigate the throwing technique of 144 students. The group was classified as ‘skilled’ or ‘less skilled’ based on MBV at release. Joints kinematics and timing of segmen...
متن کاملExamining impulse-variability in overarm throwing.
The purpose of this study was to examine variability in overarm throwing velocity and spatial output error at various percentages of maximum to test the prediction of an inverted-U function as predicted by impulse-variability theory and a speed-accuracy trade-off as predicted by Fitts' Law Thirty subjects (16 skilled, 14 unskilled) were instructed to throw a tennis ball at seven percentages of ...
متن کاملControl of joint rotations in overarm throws of different speeds made by dominant and nondominant arms.
We tested the hypothesis that dominant and nondominant overarm throws of different speeds are made by time-scaling of joint rotations, i.e., by joint rotations that have the same positions and amplitudes but that are scaled in time. Eight skilled subjects stood and made overarm throws with both their dominant and nondominant arms. Six joint rotations were computed from recordings of arm segment...
متن کاملEffect of different constraints on coordination and performance in overarm throwing
ii Contents List of papers iii Acknowledgements iv 1) Introduction 1 2) Influence of instruction on velocity and accuracy of overarm throwing 14 3) Effect of instruction on velocity, accuracy and coordination of overarm throwing 29 4) Effect of body size and gender in overarm throwing performance 42 5) Force-velocity relationship and coordination patterns in overarm throwing 59 6) Effect of dif...
متن کاملSensorimotor control in overarm throwing.
Goal-directed movement is possible because the cortical regions regulating movement have continuous access to visual information. Extensive research from the various domains of motor control (i.e., neurophysiology, neuropsychology, and psychophysics) has documented the extent to which the unremitting availability of visual information enables the sensorimotor system to facilitate online control...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Exercise and sport sciences reviews
دوره 36 4 شماره
صفحات -
تاریخ انتشار 2008