View Full Version : Lack of Stability Indicators Summary

Andrew Pruszynski
04-30-2004, 03:21 AM
Last week I posted the following:

I am currently starting a project that will analyze the biomechanical
indicators (eg. Postural Sway, Symmetry of Motion, Jerk, ...) of stability
problems in the elderly. If anyone could help me out by providing some
references with respect to such factors or simply suggest others, it would
be greatly appreciated.

As promised, I have compiled and summarized the responses. I would like to
thanks all the respondants, the comments and references are very useful
though it may take me a while to dig through them all. If there are any
additional comments please do not hesitate to contact me.

Andrew Pruszynski

Nick Stergiou, PhD
Director of the HPER Biomechanics Laboratory
University of Nebraska at Omaha

Suggested checking chapter three on nonlinear analysis in his book
"Innovative Analyses in Human Movement" published by Human Kinetics.

also suggested several recent publications,

Max J. Kurz and Nicholas Stergiou. The aging humans neuromuscular system
expresses less certainty for selecting joint kinematics during gait.
Neuroscience Letters. 348(3), 155-158.

Ugo H. Buzzi, Nicholas Stergiou, Max J. Kurz, Patricia A. Hageman and Jack
Heidel. Nonlinear dynamics indicates aging affects variability during gait.
Clinical Biomechanics. 18(5), 435-443.

Nicholas Stergiou, Giannis Giakas, Jennifer E. Byrne and Valerie Pomeroy.
Frequency domain characteristics of ground reaction forces during walking of
young and elderly females. Clinical Biomechanics. 17(8), 615-617.

Tim Doyle
Edith Cowan University
PhD Candidate - Biomechanics

"The attached paper investigates stability during quiet stance, my planned
research shifts to investigating stability during dynamic activities of
balance and gait."

He provided the following referece:

Doyle, T. L. A., Dugan, E. L., Humphries, B., & Newton, R. U. (2004).
Discriminating between elderly and young using a fractal dimension analysis
of centre of pressure. International Journal of Medical Sciences, 1(1),

John Buckley, PhD
Research Associate (biomechanics)
Dept of Optometry
University of Bradford

"our work of recent months/years is to look at the affects of vision on
aspects of balance in the elderly - see below"

Buckley JG, Anand V, Scally A and Elliott DB. Does head extension and
flexion increase postural instability in elderly subjects when visual
information is kept constant? Gait & Posture. In Press, Corrected
Proof. http://www.sciencedirect.com/science/journal/09666362

Heasley K, Buckley JG, Scally A, Twigg P, Elliott DB The effects of
visual blur on the gait initiation in the elderly when stepping to a
new level. In Press. Invest Ophthal Visual Science.

Anand V, Buckley JG, Scally A and Elliott DB. (2003) Postural stability
changes in the elderly with reversible visual impairment: Cataract
simulation and refractive blur. Invest Ophthal Visual Science,

Anand V, Buckley JG, Scally A and Elliott DB. (2003) Postural stability
in the elderly during sensory perturbations and dual tasking: The
influence of refractive blur. Invest Ophthalmol Vis Sci, 44(7):2885-91.

Anand V, Buckley JG, Scally A and Elliott DB. (2002) The effect of
refractive blur on postural stability. Ophthal Physiol Opt, 22:528-534.

"I've also been involved in some work looking at aspects of dynamic
stability during stepping by the elderly"

Buckley JG, Heasley K, Twigg P, Elliott DB. The effects of blurred
vision on the mechanics of landing during stepping down by the elderly.
Gait & Posture. In Press, Corrected Proof.

Lark SD, Buckley JG, Bennett S, Jones D and Sargeant A. (2003) Dynamic
joint stiffness in elderly and young men during stepping down. Clinical
Biomechanics, 18(9):848-855.

Lark SD, Buckley JG, Jones D and Sargeant A. (2004) Knee and ankle
range of motion during stepping in elderly compared to young men. Eur J
Applied Physiol, 91: 287-295.


Sharon Joines, PhD
Director of Research
The Ergonomics Center of North Carolina

"There was at least one good study presented at HFES 2003. You might
check their proceedings."

I am still in the process of acquiring the proceeding of the conference.

Peter Reeves, PhD Candidate
School of Kinesiology
Simon Fraser University

T.M. Owings, M.D. Grabiner. Step width variability, but not step length
variability or step time variability, discriminates gait of healthy young
and older adults during treadmill locomotion [rapid communication].
Journal of Biomechanics, Vol 37 Iss 6, pp 935-938.

Jason Wicke

William H. Gage, David A. Winter, James S. Frank, Allan L. Adkin. Kinematic
and kinetic validity of the inverted pendulum model in quiet
standing. Gait and Posture. 19 (2004) 124132.

Aaron Grogan
Biomedical Engineering
Boston University

"You might want to look at the work that Jim Collins (Boston University) is
doing in this area. He has been investigating galvanic stim and noise
enhancement of balance control in elderly populations."

Collins, J. J. and C. J. De Luca (1995). "The effects of visual input on
open-loop and closed-loop postural control mechanisms." Exp Brain Res
103(1): 151-63.

Gravelle, D. C., C. A. Laughton, et al. (2002). "Noise-enhanced balance
control in older adults." Neuroreport 13(15): 1853-6.

Laughton, C. A., M. Slavin, et al. (2003). "Aging, muscle activity, and
balance control: physiologic changes associated with balance impairment."
Gait Posture 18(2): 101-8.

Mitchell, S. L., J. J. Collins, et al. (1995). "Open-loop and closed-loop
postural control mechanisms in Parkinson's disease: increased mediolateral
activity during quiet standing." Neurosci Lett 197(2): 133-6.

Priplata, A., J. Niemi, et al. (2002). "Noise-enhanced human balance
control." Phys Rev Lett 89(23): 238101.

Priplata, A. A., J. B. Niemi, et al. (2003). "Vibrating insoles and balance
control in elderly people." Lancet 362(9390): 1123-4.

Robertson, S., J. Collins, et al. (1994). "The Influence of Skill and
Intermittent Vision on Dynamic Balance." J Mot Behav 26(4): 333-339.

Scinicariello, A. P., K. Eaton, et al. (2001). "Enhancing human balance
control with galvanic vestibular stimulation." Biol Cybern 84(6): 475-80.

-- Andrew Pruszynski -- Systems Engineering -- Simon Fraser University --

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