A influência da dupla tarefa no controle postural de adultos jovens
DOI:
https://doi.org/10.590/1809-2950/132405722012015Resumo
O objetivo deste estudo foi verificar a influência da dupla tarefa no equilíbrio postural de adultos jovens. Fizeram parte do estudo 20 universitários (10 homens e 10 mulheres) com idade média de 25 anos. O equilíbrio postural foi avaliado pelo Sensory Organization Test (SOT), utilizando o Smart Equitest(tm) da NeuroCom(r) International, que avalia a habilidade do indivíduo para usar os diferentes sistemas do controle postural (somatossensorial, vestibular e visual) para se manter em equilíbrio nas 6 condições de conflito sensorial apresentadas pelo sistema. Os sujeitos foram avaliados em tarefa única (manutenção do equilíbrio) e dupla tarefa (manutenção do equilíbrio em conjunto com tarefa cognitiva de cálculo mental), de modo randomizado. O equilíbrio foi mensurado através do escore de equilíbrio, comparando diferenças angulares entre os deslocamentos anterior e posterior máximos. Foi utilizado o teste de Wilcoxon com nível de significância p(0,05 para comparar as médias dos escores de equilíbrio entre a situação sem e com dupla tarefa. Os escores de equilíbrio nas condições do SOT evidenciaram diferença estatisticamente significativa na condição 1 (olhos abertos, plataforma e entorno visual fixos; p=0,018) e na condição 6 (olhos abertos, plataforma oscila e entorno visual fixo; p=0,008), com redução do equilíbrio com a dupla tarefa em ambas. Os resultados mostraram que durante a dupla tarefa, composta pelas quatro operações aritméticas, o controle postural é influenciado negativamente com maior oscilação dos sujeitos. Assim, a complexidade da tarefa secundária pode ter sido o principal motivo para os menores escores de equilíbrio encontrados.Downloads
Referências
Schneider W, Fisk AD. Attention: theory and mechanism for skilled
performance. In: Magill RA, editor. Advances in psychology: memory and control of motor behavior. Amsterdam: North-Holland
Publishing Company; 1983. v. 12, p. 119-43.
Knutson KM, Mah L, Manly CF, Grafman J. Neural correlates of
automatic beliefs about gender and race. Hum Brain Mapp.
;28:915-30.
Pruszynski JA. Primary motor cortex and fast feedback responses
to mechanical perturbations: a primer on what we know now and
some suggestions on what we should find out next. Front Integr
Neurosci. 2014;8:72. doi: 10.3389/fnint.2014.00072
Bacsi AM, Colebatch JG. Evidence for reflex and perceptual vestibular contributions to postural control. Exp Brain Res. 2005;160:22-8.
Krishnamoorthy V, Latash ML, Scholz JP, Zatsiorsky VM. Muscle
synergies during shifts of the center of pressure by standing persons. Exp Brain Res. 2003;152:281-92.
Ting LH. Dimensional reduction in sensorimotor systems: a framework for understanding muscle coordination of posture. Prog
Brain Res. 2007;165:299-321.
Woollacott MH, Shumway-Cook A. Motor Control: Theory and
Practical Applications. Baltimore: Williams & Wilkins; 1995.
Woollacott MH, Shumway-Cook A. Attention and the control of
posture and gait: a review of an emerging area of research. Gait
Posture. 2002;16(1):1-14.
Kejonen P, Kauranen K, Ahasan R, Vanharanta H. Motion analysis
measurements of body movements during standing: association
with age and sex. Int J Rehabil Res. 2002;25:297-304.
Maylor EA, Wing AM. Age differences in postural stability are increased by additional cognitive demands. J Gerontol B Psychol Sci Soc
Sci. 1996;51(3):P143-54.
Pellecchia GL. Postural sway increases with attentional demands of
concurrent cognitive task. Gait Posture. 2003;18:29-34.
Swan L, Otani H, Loubert PV. Reducing postural sway by manipulating the difficulty levels of a cognitive task and a balance task. Gait
Posture. 2007;26:470-4.
Olivier I, Cuisinier R, Vaugoyeay M, Nougier V, Assaiante C. Agerelated differences in cognitive and postural dual-task performance.
Gait Posture. 2010;32(4):494-9.
Strayer DL, Johnston WA. Driven to distraction: Dual-task studies of
simulated driving and conversing on a cellular telephone. Psychol
Sci. 2001;12:462-6.
Kemper S, Herman RE, Lian CHT. The costs of doing two things at
once for young and older adults: talking while walking, finger tapping, and ignoring speech or noise. Psychol Aging. 2003;18:181-92.
Tun PA, Wingfield A. Does dividing attention become harder with
age? Findings from the divided attention questionnaire. Aging
Neuropsychol Cognition. 1995;2:39-66.
Prado JM, Stoffregen TA, Duarte M. Postural sway during dual task
in young and elderly adults. Gerontology. 2007;53(5):274-81.
Shumway-Cook A, Woollacott MH, Kerns KA, Baldwin M. The
effects of two types of cognitive tasks on postural stability in older
adults with and without a history of falls. J Gerontol A Biol Sci Med
Sci. 1997;52(4):M232-40.
Ross LM, Register-Mihalik JK, Mihalik JP, McCulloch KL, Prentice
WE, Shields EW, et al. Effects of a single-task versus a dual-task
paradigm on cognition and balance in healthy subjects. J Sport
Rehabil. 2011;20(3):296-310.
Olivier I, Cuisinier R, Vaugoyeay M, Nougier V, Assaiante C. Agerelated differences in cognitive and postural dual-task performance.
Gait Posture. 2010;32(4):494-9.
McCulloh K. Attention and dual-task conditions: Physical therapy
implications for individuals with acquired brain injury. J Neurol Phys
Ther. 2007;31(3):104-18.
Pashler H. Dual-task interference in simple tasks: data and theory.
Psychol Bull. 1994;116(2):220-44.
Fisioter Pesq. 2015;22(1):61-68
Schmidt RA, Lee TD. Motor Control and Learning: A Behavioral
Emphasis. 4. ed. Champaign, IL: Human Kinetics, 2005.
Simpkins S, Zipp G, Siskal D. Researchers explore functional implications of multitask activities. Biomechanics Mag. 2004;11:55-9.
Brown LA, Shumway-Cook A, Woollacott MH. Attentional demands
and postural recovery: the effects of aging. J Gerontol A Biol Sci
Med Sci. 1999;54:M165-71.
Teasdale N, Stelmach GE, Breunig A. Postural sway characteristics
of the elderly under normal and altered visual and support surface
conditions. J Gerontol. 1991;46(6):B238-44.
Brauer SG, Woollacott M, Shumway-Cook A. The interacting
effects of cognitive demand and recovery of postural stability in
balance-impaired elderly persons. J Gerontol A Biol Sci Med Sci.
;56(8):M489-96.
Brauer SG, Woollacott M, Shumway-Cook A. The influence of a concurrent cognitive task on the compensatory stepping response to a
perturbation in balance-impaired and healthy elders. Gait Posture.
;15(1):83-93.
Hauer K, Marburger C, Oster P. Motor performance deteriorates
with simultaneously performed cognitive tasks in geriatric patients.
Arch Phys Med Rehabil. 2002;83(2):217-23.
Hauer K, Pfisterer M, Weber C, Wezler N, Kliegel M, Oster P.
Cognitive impairment decreases postural control during dual tasks
in geriatric patients with a history of severe falls. J Am Geriatr Soc.
;51(11):1638-44.
Herman T, Mirelman A, Giladi N, Schweiger A, Hausdorff JM.
Executive control deficits as a prodrome to falls in healthy older
adults: a prospective study linking thinking, walking, and falling. J
Gerontol A Biol Sci Med Sci. 2010;65(10):1086-92.
Kerr B, Condon SM, McDonald LA. Cognitive spatial processing and
the regulation of posture. J Exp Psychol Hum Percept Perform.
;11(5):617-22.
Lajoie Y, Teasdale N, Bard C, Fleury M. Upright standing and gait: are
there changes in attentional requirements related to normal aging?
Exp Aging Res. 1996;22(2):185-98.
Ebersbach, G, Dimitrijevic MR, Poewe W. Influence of concurrent tasks on gait: A dual-task approach. Percept Mot Skills.
;81(1):107-13.
McIlroy WE, Norrie RG, Brooke JD, Bishop DC, Nelson AJ, Maki BE.
Temporal properties of attention sharing consequent to disturbed
balance. Neuroreport. 1999;10(14):2895-9.
Yardley L, Gardner M, Bronstein A, Davies R, Buckwell P, Luxon L.
Interference between postural control and mental task performance
in patients with vestibular disorder and healthy controls. J Neurol
Neurosurg Psychiatry. 2001;71:48-52.
Shumway-Cook A, Woollacott MH. Attentional demands and postural control: the effect of sensory context. J Gerontol A Biol Med
Sci. 2000;55(1):M10-6.
Marconi MDA, Lakatos EM. Técnicas de pesquisa: planejamento e
execução de pesquisas, amostragens e técnicas de pesquisa, elaboração, análise e interpretação de dados. 7. ed. São Paulo: Atlas; 2011.
McDowd JM. An overview of attention: behavior and brain. J Neurol
Phys Ther. 2007;31:98-103.
Meyer DE, Kieras DE. A computational theory of executive cognitive
processes and human multiple-task performance: Part 1. Basic
mechanisms. Psychol Rev. 1997;104(1):3-65.
Hunter MC, Hoffman MA. Postural control: visual and cognitive
manipulations. Gait Posture. 2001;13:41-8.
Resch JE, May B, Tomporowski PD, Ferrara MS. Balance performance with a cognitive task: a continuation of the dual-task testing
paradigm. J Athl Train. 2011;46(2):170-5.
Huxhold O, Li SC, Schmiedek F, Lindenberg U. Dual-tasking postural
control: aging and the effects of cognitive demand in conjunction
with focus of attention. Brain Res Bull. 2006;69(3):294-305.
Remaud A, Boyas S, Caron GAR, Bilodeau M. Attentional demands
associated with postural control depend on task difficulty and
visual condition. J Mot Behav. 2012;44(5):329-40.
Remaud A, Boyas S, Lajoie Y, Bilodeau M. Attentional focus influences postural control and reaction time performances only during
challenging dual-task conditions in healthy young adults. Exp Brain
Res. 2013;231(2):219-29.
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