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Daniel Hamacher, Dennis Hamacher, Roy Müller, Lutz Schega and Astrid Zech

frequently analyzed to gauge sensorimotor gait control. Both extremely low and high gait variability is characteristic of impaired sensorimotor control mechanisms ( Singh, Konig, Arampatzis, Heller, & Taylor, 2012 ). However, next to the variability of consecutive stride times or stride lengths, the

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Elizabeth J. Bradshaw and W.A. Sparrow

The study examined adjustments to gait when positioning the foot within a narrow target area at the end of an approach or “run-up” similar to the take-off board in long jumping. In one task, participants (n = 24) sprinted toward and placed their foot within targets of four different lengths for 8-m and 12-m approach distances while “running through” the target. In a second task, participants (n = 12) sprinted toward and stopped with both feet in the target area. Infra-red timing lights were placed along the approach strip to measure movement times, with a camera positioned to view the whole approach to measure the total number of steps, and a second camera placed to view the final stride, which was analyzed using an in-house digitizing system to calculate the final stride characteristics. In the run-through task, a speed-accuracy trade-off showing a linear relationship (r = 0.976, p < .05) between target length and approach time was found for the 8-m amplitude. An accelerative sub-movement and a later targeting or “homing-in” sub-movement were found in the approach kinematics for both amplitudes. Final stride duration increased, and final stride velocity decreased with a decrease in target length.

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Priscila Abbári Rossi Manciopi, Natalia Madalena Rinaldi and Renato Moraes

Low back pain (LBP) can affect performance in the combined task (CT) of gait and prehension, since it increases muscle activity amplitude during voluntary movements, impairs the anticipatory postural adjustments and reduces gait speed. We analyzed and compared the effect of adding the prehension movement toward a dowel located at three different heights (80, 100 and 120% of the lower limb length) on gait of individuals with and without LBP. The CT caused anticipatory adjustments, showing that gait changes started during the approach phase and continued on the step corresponding to grasping, especially for the lowest dowel height. Furthermore, individuals with LBP reduced walking speed, increased the width of the base of support, increased electromyography activity of low back trunk muscles, and increased the margin of dynamic stability compared with control group. These results suggest that individuals with LBP used a strategy to reduce threat to body stability due to addition of the manual task.

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Philip W. Fink, Sarah P. Shultz, Eva D’Hondt, Matthieu Lenoir and Andrew P. Hills

.1080/17477160802468470 D’Hondt , E. , Segers , V. , Deforche , B. , Shultz , S.P. , Tanghe , A. , Gentier , I. , … Lenoir , M. ( 2011 ). The role of vision in obese and normal-weight children’s gait control . Gait & Posture, 33 ( 2 ), 179 – 184 . doi:10.1016/j.gaitpost.2010.10.090 10.1016/j

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Michael Gay and Semyon Slobounov

observations then provide a trajectory to recovery of function that can be measured serially over time. Research in posture and gait control reveal the impact of concussion on motor control. The clinical features of poor motor control and balance are routinely assessed using the Balance Error Scoring System

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Dylan C. Perry, Christopher C. Moore, Colleen J. Sands, Elroy J. Aguiar, Zachary R. Gould, Catrine Tudor-Locke and Scott W. Ducharme

gait control strategies, including increases in cognitive demand (ie, greater anticipatory leg adjustments) and preparatory muscle activity, as well as a modified ankle stabilization strategy to combat the associated balance perturbation—all of which can contribute to increased metabolic intensity. 26

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James Hackney, Jade McFarland, David Smith and Clinton Wallis

– 644 . PubMed ID: 8514809 doi:10.1016/0021-9290(93)90027-C 10.1016/0021-9290(93)90027-C Macpherson , J. ( 1992 ). Why biomechanics? In F. Horak , & M.H. Woollacott (Eds.), Posture and Gait: Control Mechanisms, 1992 : XIth International Symposium of the Society for Postural and Gait Research

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Heather K. Vincent, Laura A. Zdziarski, Kyle Fallgatter, Giorgio Negron, Cong Chen, Trevor Leavitt, MaryBeth Horodyski, Joseph G. Wasser and Kevin R. Vincent

for the pelvis excursion; excursion was 3.4% to 11.8% lower in the BELT and FULL conditions than CON and HALF ( P  < .001). Table 4 Angle Values at Midstance Phase of Running Gait Control Full bottle Half-full bottle Belt Effect-size range, d Sagittal plane  Ankle a   Right 83.4 (4.4) 83.9 (6.2) 87

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Chanel T. LoJacono, Ryan P. MacPherson, Nikita A. Kuznetsov, Louisa D. Raisbeck, Scott E. Ross and Christopher K. Rhea

.E. ( 1998 ). How is human gait controlled by vision . Ecological Psychology, 10 ( 3–4 ), 287 – 302 . doi:10.1080/10407413.1998.9652686 10.1207/s15326969eco103&4_7 Patla , A.E. , & Greig , M. ( 2006 ). Any way you look at it, successful obstacle negotiation needs visually guided on-line foot

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Jennifer K. Sansom and Beverly D. Ulrich

using this novel AD while maintaining their balance and enhancing body and gait control. Using these socially acceptable devices along with the health benefits could enable some children with MMC to remain community ambulators longer into their adolescence and young adulthood. However, further studies