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21.
Yannick Michaud-Paquette Patrick Magee David Pearsall René Turcotte 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(1):12-21
The purpose of this study was to identify joint angular kinematics that corresponds to shooting accuracy in the stationary ice hockey wrist shot. Twenty-four subjects participated in this study, each performing 10 successful shots on four shooting targets. An eight-camera infra-red motion capture system (240 Hz), along with passive reflective markers, was used to record motion of the joints, hockey stick, and puck throughout the performance of the wrist shot. A multiple regression analysis was carried out to examine whole-body kinematic variables with accuracy scores as the dependent variable. Significant accuracy predictors were identified in the lower limbs, torso and upper limbs. Interpretation of the kinematics suggests that characteristics such as a better stability of the base of support, momentum cancellation, proper trunk orientation and a more dynamic control of the lead arm throughout the wrist shot movement are presented as predictors for the accuracy outcome. These findings are substantial as they not only provide a framework for further analysis of motor control strategies using tools for accurate projection of objects, but more tangibly they may provide a comprehensive evidence-based guide to coaches and athletes for planned training to improve performance. 相似文献
22.
Cultural Studies of Science Education - In this article, I detail my involvement in sociopolitical conversations as a science education researcher. I present two of the controversies in which I... 相似文献
23.
Tobias Alt Axel J. Knicker Jannik Severin Dennis Horn Yannick T. Nodler Heiko K. Strüder 《Measurement in physical education and exercise science》2020,24(2):123-128
ABSTRACTMany sports demand high forces at high movement speeds. Joint power combines these two measures and is frequently analyzed by isokinetic tests. However, various concepts of assessing joint power lead to conflicting results. The aim was to examine different methods to calculate peak power during isokinetic knee tests of sixty-one healthy male participants (20 y, 182 cm, 76 kg). Unilateral movements of the eccentrically working hamstrings and the concentrically working quadriceps at 150°/s were captured by high-speed cameras. Peak power derived from isokinetic data was significantly higher (p < 0.01, d > 1.54) compared to the camera-based kinematic procedures. To achieve best accuracy, peak power should be derived from the camera-based joint angular velocity and the measured moment at time of peak power during the dynamometer’s isokinetic range of motion. A meaningful assessment of isokinetic joint power should incorporate a camera-based kinematic analysis to account for potential measuring inaccuracies owing to anatomical features, axis misalignment, and tissue deformation. 相似文献
24.
The bulk of interest in the role that interaction plays in learning in sport and physical education (PE) has focused on peer interaction at the expense of teacher–student interaction. This article redresses this imbalance in the literature by reporting on a study that inquired into the nature of teacher–student interaction and its effect on learning in PE swimming lessons in a French secondary school. Informed by an enactivist conceptualisation of learning, it emphasises the subjective dynamics of interaction to suggest that patterns of coordination should not be seen as being predetermined and determining student learning but, instead, as forms of engagement that influence, and are influenced by, the dynamics of interaction. In doing so it suggests the pivotal importance of teacher empathy for student learning through interaction in PE. 相似文献
25.
Chantal Pouliot 《Cultural Studies of Science Education》2017,12(4):815-820
In their articles, Ajay Sharma (Cult Stud Sci Educ, doi: 10.1007/s11422-017-9835-z, 2017) and Noel Gough (Cult Stud Sci Educ, doi: 10.1007/s11422-017-9834-0, 2017) shed light on the impact neoliberalism has on the teaching of science and suggest ways to ensure that science education remains critical and socially equitable. In this paper, I illustrate how their proposals influenced my instructional choices during the fall of 2016 in a course entitled Epistemology and Education. 相似文献