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Eric Foch and Clare E. Milner

knee angles are only one component of atypical running biomechanics that may differ between runners with ITBS and controls. Coordination patterns between segments that comprise the hip and knee joints throughout stance allow for a more complete kinematic description of running compared with examining a

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Christopher A. DiCesare, Scott Bonnette, Gregory D. Myer and Adam W. Kiefer

, 2006 ; Myer, Ford, Palumbo, & Hewett, 2005 ; Myer et al., 2013 ; Paterno et al., 2011 ). While important in this respect, such associations are not fully informative of the human movement system’s organization and coordination and the way in which these system processes relate to task performance

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Julia Freedman Silvernail, Richard E.A. van Emmerik, Katherine Boyer, Michael A. Busa and Joseph Hamill

Functional movements are produced through the coordination of body segments in time and space. The analysis of coordination patterns can provide information about features of the movement that cannot be observed looking solely at individual joint angles. These coordination measures can be utilized

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Ana F. Silva, Pedro Figueiredo, Sara Morais, João P. Vilas-Boas, Ricardo J. Fernandes and Ludovic Seifert

/her behavior to dynamically shifting environments that characterize sport competition ( Seifert, Button, & Davids, 2013 ), with resourcefulness reflecting his/her capability to functionally vary behavior. Functional variability could occur by changing coordination patterns or by adjusting spatial

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Yoav Gimmon, Hisham Rashad, Ilan Kurz, Meir Plotnik, Raziel Riemer, Ronen Debi, Amir Shapiro and Itshak Melzer

between the aging groups and young participants. We used a dynamic approach where the gait velocity is controlled by treadmill across different walking speeds ( Barak Wagenaar, & Holt, 2006 ; Wagenaar & Beek, 1992 ), comparing age-related differences in gait asymmetry (GA) and phase coordination index

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Hai-Jung Steffi Shih, Danielle N. Jarvis, Pamela Mikkelsen and Kornelia Kulig

performance of bipedal tasks relies on a coordinated effort between the 2 limbs. Simultaneous bipedal coordination, however, has received much less attention than bimanual tasks or reciprocal lower limb movements such as locomotion. 3 , 5 – 9 In the context of bipedal jumps, vertical ground reaction forces

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Scott W. Ducharme and Richard E.A. van Emmerik

related to aging and disease. In the second section, we provide an overview of past and current research on coordination dynamics that demonstrates the functional role of variability in human locomotion. Next, the major section of this paper addresses the concept of fractals that has provided new insights

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Jurjen Bosga and Ruud G. J. Meulenbroek

In this study we investigated redundancy control in joint action. Ten participantpairs (dyads) performed a virtual lifting task in which isometric forces needed to be generated with two or four hands. The participants were not allowed to communicate but received continuous visual feedback of their performance. When the task had to be performed with four hands, participants were confronted with a redundant situation and between-hand force synergies could, in principle, be formed. Performance timing, success rates, cross-correlations, and relative phase analyses of the force-time functions were scrutinized to analyze such task-dependent synergies. The results show that even though the dyads performed the task slower and less synchronized in the joint than in the solo conditions, the success rates in these conditions were identical. Moreover, correlation and relative phase analyses demonstrated that, as expected, the dyads formed between-participant synergies that were indicative of force sharing in redundant task conditions.

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Yumeng Li, Rumit S. Kakar, Marika A. Walker, Li Guan and Kathy J. Simpson

Interest in intersegmental coordination during locomotion (eg, between the low back and pelvis or between foot segments) has continued to increase. 1 – 6 Investigating intersegmental coordination of different types of locomotor movements can provide more insight into the processes used by the

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Grace C. Bellinger, Kristen A. Pickett and Andrea H. Mason

Walking and reaching to grasp objects are two of the most fundamental behaviors performed by humans. The complexity of these tasks becomes more evident when they are executed simultaneously, requiring considerable motor coordination to combine a discrete upper limb task with the cyclical task of