Effects of dual task on turning ability in stroke survivors and older adults

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Hollands, K ; Agnihotri, D ; Tyson, SF

Background: Turning is an integral component of independent mobility in which stroke survivors frequently fall. Objective: This study sought to measure the effects of competing cognitive demands on the stepping patterns of stroke survivors, compared to healthy age-match adults, during turning as a putative mechanism for falls. Methods: Walking and turning (90º) was assessed under single (walking and turning alone) and dual task (subtracting serial 3s while walking and turning) conditions using an electronic, pressure-sensitive walkway. Dependent measures were time to turn, variability in time to turn, step length, step width and single support time during three steps of the turn. Turning ability in single and dual task conditions was compared between stroke survivors (n= 17, mean ± SD: 59 ± 113 months post-stroke, 64 ± 10 years of age) and age-matched healthy counterparts (n = 15). Results: Both groups took longer, were more variable, tended to widen the second step and, crucially, increased single support time on the inside leg of the turn while turning and distracted. Conclusions. Increased single support time during turning may represent biomechanical mechanism, within stepping patterns of turning under distraction, for increased risk of falls for both stroke survivors and older adults.
  • References (30)
    30 references, page 1 of 3

    [1] Glaister BCB, G.C.; Klute, G.K.; Orendurff, M.S.;. Video task analysis of turning during activities of daily living. Gait and posture. 2007;25:289-94.

    [2] Hyndman D, Ashburn A, Stack E. Fall events among people with stroke living in the community: Circumstances of falls and characteristics of fallers. Archives of Physical Medicine and Rehabilitation. 2002;83(2):165-70.

    [3] Cumming RG, Klineberg RJ. Fall frequency and characteristics and the risk of hip fractures. J Am Geriatr Soc. 1994 Jul;42(7):774-8.

    [4] Nyberg L, Gustafson Y. Patient falls in stroke rehabilitation. A challenge to rehabilitation strategies. Stroke. 1995 May;26(5):838-42.

    [5] Hollands KL, Hollands MA, Zietz D, Wing AM, Wright C, van Vliet P. Kinematics of turning 180 degrees during the timed up and go in stroke survivors with and without falls history. Neurorehabil Neural Repair. 2010 May;24(4):358-67.

    [6] Hollands KL, van Vliet P, Zietz D, Wing A, Wright C, Hollands MA. Stroke-related differences in axial body segment coordination during preplanned and reactive changes in walking direction. Exp Brain Res. 2010 May;202(3):591-604.

    [7] Lam T, Luttmann K. Turning capacity in ambulatory individuals poststroke. Am J Phys Med Rehabil. 2009 Nov;88(11):873-83; quiz 84-6, 946.

    [8] Takei Y, Grasso R, Amorim MA, Berthoz A. Circular trajectory formation during blind locomotion: a test for path integration and motor memory. Exp Brain Res. 1997 Jun;115(2):361-8.

    [9] Takei Y, Grasso R, Berthoz A. Quantitative analysis of human walking trajectory on a circular path in darkness. Brain Res Bull. 1996;40(5-6):491-5; discussion 5-6.

    [10] Malouin F, Richards CL, Jackson PL, Dumas F, Doyon J. Brain activations during motor imagery of locomotor-related tasks: a PET study. Hum Brain Mapp. 2003 May;19(1):47-62.

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