White Matter Volume Mediates the Relationship Between Self-Efficacy and Mobility in Older Women

REFERENCES

• Albert, S. M., Bear-Lehman, J., & Anderson, S. J. (2014). Declines in mobility and changes in performance in the instrumental activities of daily living among mildly disabled community-dwelling older adults. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences. doi: 10.1093/gerona/glu088
   PubMed Web of Science ®Google Scholar
• Andersson, L. B., Marcusson, J., & Wressle, E. (2014). Health-related quality of life and activities of daily living in 85-year-olds in Sweden. Health & Social Care in the Community, 22, 368–374. doi: 10.1111/hsc.12088
   PubMed Web of Science ®Google Scholar
• Bandura, A. (1977). Self-efficacy: Toward a unifying theory of behavioral change. Psychological Review, 84, 191–215. doi: 10.1037/0033-295X.84.2.191
   PubMed Web of Science ®Google Scholar
• Colcombe, S., & Kramer, A. F. (2003). Fitness effects on the cognitive function of older adults: A meta-analytic study. Psychological Science, 14, 125–130. doi: 10.1111/psci.2003.14.issue-2
   PubMed Web of Science ®Google Scholar
• Davis, J. C., Nagamatsu, L. S., Hsu, C. L., Beattie, B. L., & Liu-Ambrose, T. (2012). Self-efficacy is independently associated with brain volume in older women. Age and Ageing, 41, 495–501. doi: 10.1093/ageing/afs029
   PubMed Web of Science ®Google Scholar
• Donoghue, O. A., Savva, G. M., Coronin, H., Kenny, R. A., & Horgan, N. F. (2014). Using Timed Up-and-Go and usual gait speed to predict incident difficulty in daily activities among community-dwelling adults aged 65 and older. Archives of Physical Medicine and Rehabilitation, 95, 1954–1961. doi: 10.1016/j.apmr.2014.06.008
   PubMed Web of Science ®Google Scholar
• Folstein, M. F., Folstein, S. E., & McHugh, P. R. (1975). “Mini-mental state.” A practical method for grading the cognitive state of patients for the clinician. Journal of Psychiatric Research, 12, 189–198. doi: 10.1016/0022-3956(75)90026-6
   PubMed Web of Science ®Google Scholar
• Groll, D. L., To, T., Bombardier, C., & Wright, J. (2005). The development of a comorbidity index with physical function as the outcome. Journal of Clinical Epidemiology, 58, 595–602. doi: 10.1016/j.jclinepi.2004.10.018
   PubMed Web of Science ®Google Scholar
• Jackson, J., Balota, D. A., & Head, D. (2011). Exploring the relationship between personality and regional brain volume in healthy aging. Neurobiology of Aging, 32, 2162–2171. doi: 10.1016/j.neurobiolaging.2009.12.009
   PubMed Web of Science ®Google Scholar
• Jenkinson, M., Bannister, P., Brady, M., & Smith, S. (2002). Improved optimization for the robust and accurate linear registration and motion correction of brain images. Neuroimage, 17, 825–841. doi: 10.1006/nimg.2002.1132
   PubMed Web of Science ®Google Scholar
• Jenkinson, M., & Smith, S. (2001). A global optimisation method for robust affine registration of brain images. Medical Image Analysis, 5, 143–156. doi: 10.1016/S1361-8415(01)00036-6
   PubMed Web of Science ®Google Scholar
• Liu-Ambrose, T., Khan, K. M., Donaldson, M. G., Eng, J. J., Lord, S. R., & McKay, H. A. (2006). Falls-related self-efficacy is independently associated with balance and mobility in older women with low bone mass. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences, 61, 832–838.
   PubMed Web of Science ®Google Scholar
• Liu-Ambrose, T., Nagamatsu, L. S., Graf, P., Beattie, B. L., Ashe, M., & Handy, T. C. (2010). Resistance training and executive functions: A 12-month randomized controlled trial. Archives of Internal Medicine, 170, 170–178. doi: 10.1001/archinternmed.2009.494
   PubMed Web of Science ®Google Scholar
• Liu-Ambrose, T., Nagamatsu, L. S., Voss, M. W., Khan, K. M., & Handy, T. C. (2011). Resistance training and functional plasticity of the aging brain: A 12-month randomized controlled trial. Neurobiology of Aging, 33, 1690–1698. doi: 10.1016/j.neurobiolaging.2011.05.010
   PubMed Web of Science ®Google Scholar
• Maki, B. E., Holliday, P. J., & Topper, A. K. (1991). Fear of falling and postural performance in the elderly. Journal of Gerontology, 46, M123–M131. doi: 10.1093/geronj/46.4.M123
   PubMedGoogle Scholar
• McAuley, E., Mullen, S. P., Szabo, A. N., White, S. M., Wojcicki, T. R., Mailey, E. L., … Kramer, A. F. (2011). Self-regulatory processes and exercise adherence in older adults: Executive function and self-efficacy effects. American Journal of Preventive Medicine, 41, 284–290. doi: 10.1016/j.amepre.2011.04.014
   PubMed Web of Science ®Google Scholar
• McEwen, B. S. (2006). Protective and damaging effects of stress mediators: Central role of the brain. Dialogues of Clinical Neuroscience, 8, 367–381.
   PubMedGoogle Scholar
• Myers, A. M., Powell, L. E., Maki, B. E., Holliday, P. J., Brawley, L. R., & Sherk, W. (1996). Psychological indicators of balance confidence: Relationship to actual and perceived abilities. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences, 51A, M37–M43. doi: 10.1093/gerona/51A.1.M37
   Web of Science ®Google Scholar
• Nagamatsu, L. S., Boyd, L. A., Hsu, C. L., Handy, T. C., & Liu-Ambrose, T. (2013). Overall reductions in functional brain activation are associated with falls in older adults: An fMRI study. Frontiers in Aging Neuroscience, 5, 1–7. doi: 10.3389/fnagi.2013.00091
   PubMed Web of Science ®Google Scholar
• Nagamatsu, L. S., Hsu, C. L., Handy, T. C., & Liu-Ambrose, T. (2011). Functional neural correlates of reduced physiological falls risk. Behavioral and Brain Science, 7, 37.
   Google Scholar
• Nasreddine, Z. S., Phillips, N. A., Bedirian, V., Charbonneau, S., Whitehead, V., Collin, I., … Chertkow, H. (2005). The Montreal Cognitive Assessment, MoCA: A brief screening tool for mild cognitive impairment. Journal of the American Geriatrics Society, 53, 695–699. doi: 10.1111/j.1532-5415.2005.53221.x
   PubMed Web of Science ®Google Scholar
• Newman, A. B., Haggerty, C. L., Kritchevsky, S. B., Nevitt, M. C., & Simonsick, E. M. (2003). Walking performance and cardiovascular response: Associations with age and morbidity—The health, aging, and body composition study. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences, 58, 715–720. doi: 10.1093/gerona/58.8.M715
   PubMed Web of Science ®Google Scholar
• Podsiadlo, D., & Richardson, S. (1991). The timed “up and go”: A test of basic functional mobility for frail elderly persons. Journal of the American Geriatrics Society, 39, 142–148. doi: 10.1111/j.1532-5415.1991.tb01616.x
   PubMed Web of Science ®Google Scholar
• Powell, L., & Myers, A. (1995). The Activities-Specific Confidence (ABC) Scale. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences, 50A, M28–M34. doi: 10.1093/gerona/50A.1.M28
   PubMed Web of Science ®Google Scholar
• Preacher, K. J., & Hayes, A. F. (2008). Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models. Behavior Research Methods, 40, 879–891. doi: 10.3758/BRM.40.3.879
   PubMed Web of Science ®Google Scholar
• Pruessner, J. C., Baldwin, M. W., Dedovic, K., Renwick, R., Mahani, N. K., Lord, C., … Lupien, S. (2005). Self-esteem, locus of control, hippocampal volume, and cortisol regulation in young and old adulthood. NeuroImage, 28, 815–826. doi: 10.1016/j.neuroimage.2005.06.014
   PubMed Web of Science ®Google Scholar
• Rosano, C., Aizenstein, H. J., Studentski, S., & Newman, A. B. (2007). A regions-of-interest volumetric analysis of mobility limitations in community-dwelling older adults. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences, 62, 1048–1055.
   PubMed Web of Science ®Google Scholar
• Rosano, C., Sigurdsson, S., Siggeirsdottir, K., Phillips, C. L., Garcia, M., Jonsson, P. V., … Launer, L. J. (2010). Magnetization transfer imaging, white matter hyperintensities, brain atrophy and slower gait in older men and women. Neurobiology of Aging, 31, 1197–1204. doi: 10.1016/j.neurobiolaging.2008.08.004
   PubMed Web of Science ®Google Scholar
• Seeman, T. E., Berkman, L. F., Gulanski, B. I., Robbins, R. J., Greenspan, S. L., Charpentier, P. A., & Rowe, J. W. (1995). Self-esteem and neuroendocrine response to challenge: MacArthur studies of successful aging. Journal of Psychosomatic Research, 39, 69–84. doi: 10.1016/0022-3999(94)00076-H
   PubMed Web of Science ®Google Scholar
• Sessford, J. D., Jung, M., Brawley, L. R., & Forbes, J. L. (2014). Do older adults’ beliefs about their community mobility predict walking performance? Journal of Aging and Physical Activity. doi: 10.1123/japa.2013-0235
   PubMed Web of Science ®Google Scholar
• Shumway-Cook, A., Brauer, S., & Woollacott, M. (2000). Predicting the probability for falls in community-dwelling older adults using the Timed Up & Go Test. Physical Therapy, 80, 896–903.
   PubMed Web of Science ®Google Scholar
• Smith, S. M. (2002). Fast robust automated brain extraction. Human Brain Mapping, 17, 143–155. doi: 10.1002/hbm.10062
   PubMed Web of Science ®Google Scholar
• Smith, S. M., De Stefano, N., Jenkinson, M., & Matthews, P. M. (2001). Normalized accurate measurement of longitudinal brain change. Journal of Computer Assisted Tomography, 25, 466–475. doi: 10.1097/00004728-200105000-00022
   PubMed Web of Science ®Google Scholar
• Smith, S. M., Jenkinson, M., Woolrich, M. W., Beckmann, C. F., Behrens, T. E., Johansen-Berg, H., … Matthews, P. M. (2004). Advances in functional and structural MR image analysis and implementation as FSL. Neuroimage, 23(Suppl 1), SS208–SS219. doi: 10.1016/j.neuroimage.2004.07.051
   Google Scholar
• Smith, S. M., Zhang, Y., Jenkinson, M., Chen, J., Matthews, P. M., Federico, A., & De Stefano, N. (2002). Accurate, robust, and automated longitudinal and cross-sectional brain change analysis. Neuroimage, 17, 479–489. doi: 10.1006/nimg.2002.1040
   PubMed Web of Science ®Google Scholar
• Wakefield, D. B., Moscufo, N., Guttmann, C. R., Kuchel, G. A., Kaplan, R. F., Pearlson, G., & Wolfson, L. (2010). White matter hyperintensities predict functional decline in voiding, mobility, and cognition in older adults. Journal of the American Geriatrics Society, 58, 275–281. doi: 10.1111/j.1532-5415.2009.02699.x
   PubMed Web of Science ®Google Scholar
• West, R. L., Bagwell, D. K., & Dark-Freudeman, A. (2008). Self-efficacy and memory aging: The impact of a memory intervention based on self-efficacy. Aging, Neuropsychology, and Cognition, 15, 302–329. doi: 10.1080/13825580701440510
   PubMed Web of Science ®Google Scholar
• West, R. L., Thorn, R. M., & Bagwell, D. K. (2003). Memory performance and beliefs as a function of goal setting and aging. Psychology and Aging, 18, 111–125. doi: 10.1037/0882-7974.18.1.111
   PubMed Web of Science ®Google Scholar
• White, D. K., Neogi, T., Nevitt, M. C., Peloquin, C. E., Zhu, Y., Boudreau, R. M., … Zhang, Y. (2013). Trajectories of gait speed predict mortality in well-functioning older adults: The health, aging, and body composition study. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences, 68, 456–464. doi: 10.1093/gerona/gls197
   PubMed Web of Science ®Google Scholar
• Woollacott, M., & Shumway-Cook, A. (2002). Attention and the control of posture and gait: A review of an emerging area of research. Gait & Posture, 16, 1–14. doi: 10.1016/S0966-6362(01)00156-4
   PubMed Web of Science ®Google Scholar
• Yesavage, J. A. (1988). Geriatric Depression Scale. Psychopharmacology Bulletin, 24, 709–711.
   PubMed Web of Science ®Google Scholar
• Zhang, Y., Brady, M., & Smith, S. (2001). Segmentation of brain MR images through a hidden Markov random field model and the expectation-maximization algorithm. IEEE Transactions on Medical Imaging, 20, 45–57. doi: 10.1109/42.906424
   PubMed Web of Science ®Google Scholar
• Zheng, J. J., Delbaere, K., Close, J. C., Sachdev, P. S., & Lord, S. R. (2011). Impact of white matter lesions on physical functioning and fall risk in older people: A systematic review. Stroke, 42, 2086–2090. doi: 10.1161/STROKEAHA.110.610360
   PubMed Web of Science ®Google Scholar