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Scott J. Pedersen and Paul R. Surburg

This study investigated the movement preparation (reaction time) and movement execution (movement time) of children with and without ADHD by manipulating the uncertainty of occurrence. Participants performed a seated lower extremity choice response time protocol, which contained either 10% catch trials or 30% catch trials along with 27 empirical stimuli to one of three target directions. Results indicated that children with ADHD were significantly slower at processing lower extremity movements than their peers for the condition with increased number of catch trials, but not the condition with fewer catch trials. These findings suggest that children with ADHD are more affected by the uncertainty of an empirical stimulus during the preparation phase of a movement response than their age-matched peers are.

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Rahel Gilgen-Ammann, Thomas Wyss, Severin Troesch, Louis Heyer and Wolfgang Taube

Oftentimes athletes’ perception derived from intrinsic feedback is not sufficient to adequately judge their movement execution. 1 , 2 Therefore, specific information from an external source is necessary to gain a better understanding of a particular movement pattern or of certain aspects of a

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Gerda Strutzenberger, Adam Brazil, Timothy Exell, Hans von Lieres und Wilkau, John D. Davies, Steffen Willwacher, Johannes Funken, Ralf Müller, Kai Heinrich, Hermann Schwameder, Wolfgang Potthast and Gareth Irwin

individual solutions within its movement execution than did the AB group. Current research suggests that the orientation of the resultant force vector is more important to sprint performance than the magnitudes of individual force components. 6 , 18 The RoF values of the AB participants in this study

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Benjamin Pageaux, Jean Theurel and Romuald Lepers

. Perception of effort reflects central motor command during movement execution . Psychophysiology . 2012 ( 49 ): 1242 – 1253 . 26. Pageaux B , Gaveau J . Studies using pharmacological blockade of muscle afferents provide new insights into the neurophysiology of perceived exertion . J Physiol . 2016

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Luis Peñailillo, Karen Mackay and Chris R. Abbiss

:10.1080/17461391.2016.1188992 10.1080/17461391.2016.1188992 27240002 17. Borg G . Borg’s Perceived Exertion and Pain Scales . Champaign, IL : Human Kinetics ; 1998 : 104 . 18. de Morree HM , Klein C , Marcora SM . Perception of effort reflects central motor command during movement

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Javier Yanci, Daniel Castillo, Aitor Iturricastillo, Tomás Urbán and Raúl Reina

movement execution velocity, 42 , 43 and these athletes usually have a limited range of motion 44 (ie, limited follow-through after kicking). FT6 players usually have athetosis or ataxia impairments, 3 associated with involuntary movements and/or motor control, and difficulty in coordinating and

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Irene Muir, Krista J. Munroe-Chandler and Todd Loughead

. Alternatively, another dancer might find this image ineffective, as it results in stiffness during movement execution. From the qualitative findings of Nordin and Cumming’s ( 2005 ) study, a dance-specific measure was developed to assess the frequency of dancers’ imagery use (Dance Imagery Questionnaire

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Weidong Li, Xiuye Xie and Huanyu Li

) mediator three: technique selection, (h) movement execution versus skill execution, (i) mediator four: skill development, and (j) situated performance versus performance. Although Kirk and his colleagues provide detailed explanations about how situated learning theory can be a theoretical framework for the