Bidirectional interference between speech and postural stability in individuals with Parkinson's disease

References

• Ackermann, H., Ziegler, W. (1991). Articulatory deficits in parkinsonian dysarthria: An acoustic analysis. Journal of Neurology, Neurosurgery and Psychiatry, 54, 1093–1098.
   PubMed Web of Science ®Google Scholar
• Adams, S. G. (1996). Hypokinetic dysarthria in Parkinson's disease. In M. R. McNeil (Ed.), Clinical management of sensorimotor speech disorders ( pp. 259–282). New York: Thieme.
   Google Scholar
• Adams, S. G., Weismer, G., Kent, R. D. (1993). Speaking rate and speech movement velocity profiles. Journal of Speech and Hearing Research, 36, 41–54.
   PubMedGoogle Scholar
• Baker, K., Rochester, L., Nieuwboer, A. (2007). The immediate effect of attentional, auditory, and a combined cue strategy on gait during single and dual tasks in Parkinson's disease. Archives of Physical Medicine and Rehabilitation, 88, 1593–1600.
   PubMed Web of Science ®Google Scholar
• Barra, J., Bray, A., Sahni, V., Golding, J. F., Gresty, M. A. (2006). Increasing cognitive load with increasing balance challenge: Recipe for catastrophe. Experimental Brain Research, 174, 734–745.
   PubMed Web of Science ®Google Scholar
• Beauchet, O., Annweiler, C., Dubost, V., Allali, G., Kressig, R. W., Bridenbaugh, S., et al (2009). Stops walking when talking: A predictor of falls in older adults? European Journal of Neurology, 16, 786–795.
   PubMed Web of Science ®Google Scholar
• Bloem, B. R., Grimbergen, Y. A., van Dijk, J. G., Munneke, M. (2006). The “posture second” strategy: A review of wrong priorities in Parkinson's disease. Journal of the Neurological Sciences, 248, 196–204.
   PubMed Web of Science ®Google Scholar
• Brown, R. G., Marsden, C. D. (1991). Dual task performance and processing resources in normal subjects and patients with Parkinson's disease. Brain, 114, 215–231.
   PubMed Web of Science ®Google Scholar
• Camicioli, R., Oken, B. S., Sexton, G., Kaye, J. A., Nutt, J. G. (1998). Verbal fluency task affects gait in Parkinson's disease with motor freezing. Journal of Geriatric Psychiatry and Neurology, 11, 181–185.
   PubMed Web of Science ®Google Scholar
• Canning, C. G. (2005). The effect of directing attention during walking under dual-task conditions in Parkinson's disease. Parkinsonism and Related Disorders, 11, 95–99.
   PubMed Web of Science ®Google Scholar
• Cohen, J. (1992). Statistics: a power primer. Psychology Bulletin, 112, 155–159.
   PubMed Web of Science ®Google Scholar
• Cutson, T. M. (1994). Assessment of motor planning deficits. Topics in Geriatric Rehabilitation, 10, 56–69.
   Google Scholar
• Dromey, C. (2003). Spectral measures and perceptual ratings of hypokinetic dysarthria. Journal of Medical Speech-Language Pathology, 11, 85–94.
   Web of Science ®Google Scholar
• Dromey, C., Ramig, L. O., Johnson, A. B. (1995). Phonatory and articulatory changes associated with increased vocal intensity in Parkinson disease: A case study. Journal of Speech and Hearing Research, 38, 751–764.
   PubMedGoogle Scholar
• Dromey, C., Shim, E. (2008). The effects of divided attention on speech motor, verbal fluency, and manual task performance. Journal of Speech, Language, and Hearing Research, 51, 1171–1182.
   PubMed Web of Science ®Google Scholar
• Galletly, R., Brauer, S. G. (2005). Does the type of concurrent task affect preferred and cued gait in people with Parkinson's disease? Australian Journal of Physiotherapy, 51, 175–180.
   PubMed Web of Science ®Google Scholar
• Gentil, M., Pollak, P. (1995). Some aspects of Parkinsonian dysarthria. Journal of Medical Speech-Language Pathology, 3, 221–237.
   Google Scholar
• Hackney, M. E., Earhart, G. M. (2009). The effects of a secondary task on forward and backward walking in Parkinson's disease. Neurorehabilitation and Neural Repair. doi: 1177/1545968309341061
   Google Scholar
• Ho, A. K., Bradshaw, J. L., Iansek, R. (2008). For better or worse: The effect of levodopa on speech in Parkinson's disease. Movement Disorders, 23, 574–580.
   PubMed Web of Science ®Google Scholar
• Holmes, J. D., Jenkins, M. E., Johnson, A. M., Adams, S. G., Spaulding, S. J. (2010). Dual-task interference: The effects of verbal cognitive tasks on upright postural stability in Parkinson's disease. Parkinson's Disease, 2010, doi: 10.4061/2010/696492
   Google Scholar
• Lipsey, M. W. (1990). Design sensitivity: Statistical power for experimental research. Newbury Park, CA: Sage Publications.
   Google Scholar
• Marchese, R., Bove, M., Abbruzzese, G. (2003). Effect of cognitive and motor tasks on postural stability in Parkinson's disease: A posturographic study. Movement Disorders, 18, 652–658.
   PubMed Web of Science ®Google Scholar
• Martin, M., Shinberg, M., Kuchibhatla, M., Ray, L., Carollo, J. J., Schenkman, M. L. (2002). Gait initiation in community-dwelling adults with Parkinson disease: Comparison with older and younger adults without the disease. Physical Therapy, 82, 566–577.
   PubMed Web of Science ®Google Scholar
• Morris, M., Iansek, R., Smithson, F., Huxham, F. (2000). Postural instability in Parkinson's disease: A comparison with and without a concurrent task. Gait and Posture, 12, 205–216.
   PubMed Web of Science ®Google Scholar
• Nakano, K. K., Zubick, H., Tyler, H. R. (1973). Speech defects of Parkinsonian patients. Effects of levodopa therapy on speech intelligibility. Neurology, 23, 865–870.
   PubMed Web of Science ®Google Scholar
• Plotnik, M., Giladi, N., Hausdorff, J. M. (2009). Bilateral coordination of gait and Parkinson's disease: The effects of dual tasking. Journal of Neurology, Neurosurgery and Psychiatry, 80, 347–350.
   PubMed Web of Science ®Google Scholar
• Ramig, L. O., Fox, C., Sapir, S. (2004). Parkinson's disease: Speech and voice disorders and their treatment with the Lee Silverman Voice Treatment. Seminars in Speech and Language, 25, 169–180.
   PubMedGoogle Scholar
• Rochester, L., Nieuwboer, A., Baker, K., Hetherington, V., Willems, A. M., Kwakkel, G., et al (2008). Walking speed during single and dual tasks in Parkinson's disease: Which characteristics are important? Movement Disorders, 23, 2312–2318.
   PubMed Web of Science ®Google Scholar
• Weiss, P., Stelmach, G. E., Hefter, H. (1997). Programming of a movement sequence in Parkinson's disease. Brain, 120, 91–102.
   PubMed Web of Science ®Google Scholar
• Wu, T., Hallett, M. (2008). Neural correlates of dual task performance in patients with Parkinson's disease. Journal of Neurolology, Neurosurgery and Psychiatry, 79, 760–766.
   PubMed Web of Science ®Google Scholar
• Yogev, G., Giladi, N., Peretz, C., Springer, S., Simon, E. S., Hausdorff, J. M. (2005). Dual tasking, gait rhythmicity, and Parkinson's disease: Which aspects of gait are attention demanding? European Journal of Neuroscience, 22, 1248–1256.
   PubMed Web of Science ®Google Scholar
• Zijlstra, A., Ufkes, T., Skelton, D. A., Lundin-Olsson, L., Zijlstra, W. (2008). Do dual tasks have an added value over single tasks for balance assessment in fall prevention programs? A mini-review. Gerontology, 54, 40–49.
   PubMed Web of Science ®Google Scholar