O 030 - Learning effect of dynamic postural stability evaluation system

Publication date: Available online 19 June 2018
Source:Gait & Posture
Author(s): H. Keklicek, E. Kirdi, A. Yalcin, S. Topuz




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P 095 - Age-related differences in dynamic postural responses to soleus muscle vibration

Publication date: Available online 19 June 2018
Source:Gait & Posture
Author(s): D. Bzduskova, Z. Hirjaková, J. Kimijanová, F. Hlavačka




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P 098 - Preservation of motor flexibility in healthy aging: Old age and task constraints do not affect flexibility in joint coordination

Publication date: Available online 19 June 2018
Source:Gait & Posture
Author(s): C. Greve, T. Hortobágyi, R. Bongers




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O 049 - Post-stroke balance responses after lateral perturbations to pelvis during treadmill walking

Publication date: Available online 19 June 2018
Source:Gait & Posture
Author(s): M. Zadravec, A. Olenšek, M. Rudolf, N. Bizovičar, N. Goljar, Z. Matjačić




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O 021 - Does including EMG data in the estimation of muscle forces alter the evaluation of the effect of botulinum toxin injections?

Publication date: Available online 19 June 2018
Source:Gait & Posture
Author(s): M. Wesseling, T. Hoekstra, H. Kainz, S. Van Rossom, K. Desloovere, F. De Groote, I. Jonkers




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Cognition and mobility show a global association in middle- and late-adulthood: Analyses from the Canadian Longitudinal Study on Aging

Publication date: Available online 19 June 2018
Source:Gait & Posture
Author(s): Naiara Demnitz, David B. Hogan, Helen Dawes, Heidi Johansen-Berg, Klaus P. Ebmeier, Marc J. Poulin, Claire E. Sexton
BACKGROUNDGiven our aging population, there’s great interest in identifying modifiable risk factors for cognitive decline. Studies have highlighted the relationship between aspects of mobility and cognitive processes. However, cognition and mobility are both multifaceted concepts and their interrelationships remain to be well defined.RESEARCH QUESTIONHere, we firstly aimed to replicate cross-sectional associations between objective measures of mobility and cognition. Second, we tested whether these associations remained after the consideration of multiple age-related confounders. Finally, to test the hypothesis that the association between mobility and cognition is stronger in older adults, we examined the moderating effect of age in the association between mobility and cognition.METHODSIn the Canadian Longitudinal Study on Aging, 28,808 community-dwelling adults (aged 45-87; 51% female) completed mobility (gait, balance and chair stands) and cognitive (memory, executive function and processing speed) assessments. General linear models were used to examine mobility-cognition relationships and the moderating effect of age.RESULTSCognitive measures were significantly associated with mobility measures (all p < 0.001). Further, age significantly moderated the mobility-cognition relationship, with the strength of the associations generally increasing with age.SIGNIFICANCEAll cognitive measures were related to indices of mobility, suggesting a global association. In our moderation analyses, the mobility-cognition relationship often increased with age. However, the small effect sizes observed suggest that mobility is, in isolation, not a strong correlate of cognitive performance in middle and late-adulthood.



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Carrying asymmetric loads during stair negotiation: Loaded limb stance vs. unloaded limb stance

Publication date: July 2018
Source:Gait & Posture, Volume 64
Author(s): Junsig Wang, Jason C. Gillette
BackgroundIndividuals often carry items in one hand instead of both hands during activities of daily living. Research Question The purpose of this study was to investigate low back and lower extremity frontal plane moments for loaded limb stance and unloaded limb stance when carrying symmetric and asymmetric loads during stair negotiation.MethodsParticipants were instructed to ascend and descend a three-step staircase at preferred pace using a right leg lead and a left leg lead for each load condition: no load, 20% body weight (BW) bilateral load, and 20% BW unilateral load. L5/S1 contralateral bending, hip abduction, external knee varus, and ankle inversion moments were calculated using inverse dynamics.ResultsPeak L5/S1 contralateral bending moments were significantly higher when carrying a 20% BW unilateral load as compared to a 20% BW bilateral load for both stair ascent and stair descent. In addition, peak L5/S1 contralateral bending moments were significantly higher during step one than for step two. Peak external knee varus and hip abduction moments were significantly higher in unloaded limb stance as compared to loaded limb stance when carrying a 20% BW unilateral load.SignificanceGeneral load carriage recommendations include carrying less than 20% BW loads and splitting loads bilaterally when feasible. Assessment recommendations include analyzing the first stair step and analyzing both the loaded and unloaded limbs.



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