Page 35 - Mechatronics for Safety Security and Dependability in a New Era

Ch04-I044963.fm Page 18 Tuesday, August 1, 2006 6:33 PM
Ch04-I044963.fm
18 18 Page 18 Tuesday, August 1, 2006 6:33 PM

quantify degree of improvements in walking stability, which contributes to ascertain the effective-
ness of exercise intervention for elderly. Further application of the present technique may help
predicting personal risk of falls.

ACKNOWLEDGMENT

We are grateful to Dr.I.Tsuji at Graduate School of Medicine, Tohoku University. Sendail Silver
Center, and Miyagi Physical Therapist Association for their cooperation in our study. This re-
search is grant aided by Japanese Ministry of Education, Culture;, Sports, Science and Technology.

References
[1] Aminian K., Najafi B., Bula C, Lcyvraz P. F., Robert P. H. (2002). Spatio-temporal Param-
eters of Gait Measured by An Ambulatory System Using Miniature Gyroscopes. Journal of
Biomechanics 35:5, 689-699.
[2] Arif, M., Ohtaki, Y., Nagatomi, R., and Inooka, H. (2004). Estimation of the Effect of Ca-
dence on Gait Stability in Young and Elderly People using Approximate Entropy Technique,
Measurement Science Review 4. 29-40.
[3] Buzzi, U. H., Stergiou, N., Kurz, M. J., Hageman, P. A., and Heidel, J. (2003). Nonlinear
dynamics indicates aging affects variability during gait. Clinical Biomechanics 18, 435-443.

[4] Cao, L. (1997). Practical Method for Determining The Minimum Embedding Dimension of
A Scalar Time Series. Physica D:110, 43-50.
[5] Dingwell J. B., Cusumano J. P., Sternad D., Cavanagh P. R. (2000). Slower Speeds in Pa-
tients with Diabetic Neuropathy Lead to Improved Local Dynamic Stability of Continuous
Overground Walking. Journal of Biomechanics 33, 1269-1277.
[6] Dingwell J. B., D. and Cavanagh P. R. (2001) Increased variability of continuous overground
walking in neuropathic patients is only indirectly related to sensory loss. Gait and Posture
14, 1-10.
[7] Hurmuzlu Y., Basdogan C. (1994). On the Measurement of Dynamic Stability of Human
Locomotion. Journal of Biomechanical Engineering 116, 30-36.

[8] Kantz, H. (1994). A robust method to estimate the Lyapunov exponent of a time series.
Physics Letters A:185, 77-87.
[9] Maki B. E., Holliday P. J., Topper A. K. (1991). Fear of Falling and Postural Performance in
The Elderly. Journal of gerontology: Medical sciences 46, 123-131.
[10] Ohtaki Y., Sagawa K., Inooka H. (2001). A Method for Gait Analysis in A Daily Living
Environment Using Body-mounted Instruments. JSME International Journal C 44:4, 1125 -
1132.
[11] Ohtaki Y., Susumago M., Suzuki A., Sagawa K., Inooka H. (2005) Automatic Classification
of Ambulatory Movements and Evaluation of Energy Consumptions Utilizing Accelerometers
and a Barometer. Journal of Microsystem Technologies 11:8-10, 1034-1040.