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Gerald A. Smith and Brian S. Heagy

A project involving 3-D analysis of skiing technique during the 1992 Olympic Winter Games (Albertville, France) was carried out. This part of the project focused on the open field skating technique of the male skiers of the 50-km race. Three synchronized, high-speed video cameras were used to record the motion of all racers as they passed a site on flat terrain. Analysis was limited to those using the open field technique and whose skating cycle fit within the boundaries of the field being analyzed (n = 17). Several kinematic variables were determined: cycle velocity, cycle length, and cycle rate. Several significant correlations (p < .05) were observed related to performance: cycle velocity was positively related to cycle length (r = .76) but not cycle rate; cycle velocity and cycle length were positively related to strong side knee extension (r = .48 and r = .51, respectively). Thus, faster skiers on flat terrain tended to ski with longer cycle lengths, which perhaps derived from more vigorous knee extension.

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Mark C. Richardson, Andrew Wilkinson, Paul Chesterton and William Evans

injury in female athletes. 9 Individuals with increased landing knee valgus have also shown the same movement patterns in cutting and pivoting tasks, which may further increase their ACL injury risk. 10 A number of previous studies have investigated landing knee valgus using 3-dimensional (3D) analysis

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Scott W. Cheatham, Kyle R. Stull, Mike Fantigrassi and Ian Montel

 al 25 Clinical trial FAI-CAM impingement N = 26 men Exp (FAI): n = 15 Control: n = 11 Bodyweight squat 3D analysis of hip and pelvic motion Subjects with FAI had no difference in hip motion when compared with controls but had decreased sagittal plane pelvic ROM (14.7° (8.4°) vs 24.2° (6.8°)) when

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Kathryn Mills, Aula Idris, Thu-An Pham, John Porte, Mark Wiggins and Manolya Kavakli

difference in the mean of each participant’s peak knee angles as detected by the VR game and 3D analysis as function of the mean of the measures. Solid lines indicate the mean difference (95% CI), or bias, in the VR game. Broken lines and shading indicate the 95% limits of agreement and 95% CI. VR indicates

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Gustavo Ramos Dalla Bernardina, Tony Monnet, Heber Teixeira Pinto, Ricardo Machado Leite de Barros, Pietro Cerveri and Amanda Piaia Silvatti

from 1∶2000 to 1∶7000 13 , 14 in air and underwater static conditions, are evidence to suggest that ASC systems perform comparatively with MOCAP systems for such 3D analysis. However, at the present time, no concurrent comparisons between ASC and MOCAP systems have been performed, through simultaneous

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Maggi M. Calo, Thomas Anania, Joseph D. Bello, Valerie A. Cohen, Siobhan C. Stack, Meredith D. Wells, Barbara C. Belyea, Deborah L. King and Jennifer M. Medina McKeon

excellent reliability. 11 However, 3D biomechanical laboratories are not easily accessible, and it is difficult to screen large numbers of individuals due to the technical requirements of 3D analysis. Two-dimensional (2D) analysis of movement has also been shown to be reliable when evaluating a variety of

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Ziemowit Bańkosz and Sławomir Winiarski

, T. ( 1998 ). A qualitative 3D analysis of forehand strokes in table tennis . In A. Lees , I. Maynard , M. Hughes , & T. Reilly (Eds.), Science and racket sports II (pp.  201 – 205 ). London, UK : E. & F.N. Spon . Landlinger , J. , Lindinger , S. , Stöggl , T. , Wagner , H

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Mohammad Reza Pourahmadi, Ismail Ebrahimi Takamjani, Shapour Jaberzadeh, Javad Sarrafzadeh, Mohammad Ali Sanjari, Rasool Bagheri and Morteza Taghipour

during STS. Methods Scope and Boundaries This review intended to examine the methodological considerations for 2-dimensional and 3-D analysis of spinal movements using motion analysis systems. Areas for review included study and participant characteristics, motion analysis system, marker/sensor design