Senior Distinguished Research Scientist, IoG Research Professor, Mechanical Engineering and Senior Distinguished Research Scientist, Biomedical Engineering College of Engineering 3208 GG Brown Ann Arbor, MI 48109-2125 Tel: (734) 763-2320 Fax: (734) 763-9332 Email: jaam@umich.edu

Balance, Falls and Mobility

• Biomechanics of falls and fall-related injury
• How does the central nervous system identify a loss of balance?
• Physical and psychological factors in elderly decision-making in the performance of physically risky tasks
• Effects of peripheral neuropathy

Female Pelvic Floor Dysfunction

• The relationship between the biomechanics of vaginal birth and pelvic floor injury
• Urinary incontinence
• Fecal incontinence
• Genital organ prolapse

Publications:

Falls and Fall-related Injuries

DeGoede KM, Ashton-Miller JA and Schultz AB, Fall-Related Upper Body Injuries in the Older Adult: A Review of the Biomechanical Issues. Journal of Biomechanics, 36:1043-1053, 2003.

Ahmed AA and Ashton-Miller JA, Is a Loss of Balance a Control Error Anomaly? Evidence for Three-Sigma Failure Detection in Young Adults, Gait & Posture, 19:252-262, 2004.(American Society of Biomechanics Best Paper Award 2003).

Lo J, McCabe GN, DeGoede KM, Okuizumi H and Ashton-Miller JA, On Reducing Hand Impact Force in Forward Falls: Results of a Brief Intervention in Young Males, Clinical Biomechanics, 18:730-736, 2003.

Meinhart-Shibata P, Kramer M, Ashton-Miller JA, Persad C, Kinematic Analyses of the 180? Standing Turn: Effects of Age on Strategies Adopted by Healthy Young and Older Women, Gait & Posture, in press, 2004.

Schulz BW, Ashton-Miller JA, Alexander NB, Compensatory Stepping in Response to Waist Pulls in Balance-Impaired and Unimpaired Women, Gait & Posture, in press, 2004.

Ashton-Miller JA, Alexander NB, Biomechanics of Mobility in Older Adults. In: Principles of Geriatric Medicine & Gerontology, Chapter 71, Eds: WR Hazzard, JP Blass, JB Halter, JG Ouslander, ME Tinetti, McGraw Hill, 5th Ed, pp. 919-930, 2003.

Peripheral Neuropathy

Richardson JK, Thies SB, DeMott TK, Ashton-Miller JA, A Comparison of Gait Characteristics Between Older Women With and Without Peripheral Neuropathy in Standard and Challenging Environments, Journal of the American Gerontological Society, 52(9):1532-1537, 2004.

Richardson JK, Thies SB, DeMott TK, Ashton-Miller JA, Interventions Improve Gait Regularity in Patients With Peripheral Neuropathy While Walking On An Irregular Surface Under Low Light, Journal of the American Geriatrics Society, 52:510-515, 2004.

Thies SB, Richardson JK, DeMott T and Ashton-Miller JA, Influence of an Irregular Surface and Low Light on the Step Variability of Patients with Peripheral Neuropathy During Level Gait, Gait and Posture, in press, 2004.

Thies SB, Richardson JK and Ashton-Miller JA, Effects of Surface Irregularity and Lighting on Step Variability During Gait: A Study in Healthy Young and Older Women, Gait & Posture, in press, 2004.

Female Pelvic Floor Impairments

Lien K-C, Mooney B, DeLancey JOL and Ashton-Miller JA. Levator Ani Muscle Stretch Induced by Simulated Vaginal Birth, Obstetrics & Gynecology, 103: 31-40, 2004. (AUGS Best Paper Award 2003).

DeLancey JOL, Ashton-Miller JA, Pathophysiology of Adult Urinary Incontinence, Gastroenterology, 126:S23-S32, 2004.

Umek WH, Morgan DM, Ashton-Miller JA, DeLancey JO, Quantitative Analysis of Uterosacral Ligament Origin and Insertion Points by Magnetic Resonance Imaging. Obstetrics & Gynecology, 103(3):447-451, 2004.

Miller JM, Umek WH, DeLancey JOL, Ashton-Miller JA, Can Women Without Visible Pubococcygeal Muscle in MR Images Still Increase Urethral Closure Pressures? American Journal of Obstetrics and Gynecology, 191:171-175, 2004.

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