AlKhoury, Raghdan and Joshi, Suraj and Bhat, Rama and Shiping, Ma
Identification of Motive Forces on the Whole Body System during Walking.
Advances in Acoustics and Vibration, 2010
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Official URL: http://www.hindawi.com/journals/aav/2010/474695/
Motive forces by muscles are applied to different parts of the human body in a periodic fashion when walking at a uniform rate. In this study, the whole human body is modeled as a multidegree of freedom (MDOF) system with seven degrees of freedom. In view of the changing contact conditions with the ground due to alternating feet movements, the system under study is considered
piecewise time invariant for each half-period when one foot is in contact with the ground. Forces transmitted from the body to the ground while walking at a normal pace are experimentally measured and numerically simulated. Fourth-order Runge-Kutta method is employed to numerically simulate the forces acting on different masses of the body. An optimization problem is formulated with the squared difference between the measured and simulated forces transmitted to the ground as the objective function, and the motive forces on the body masses as the design variables to solve.
References: J. H. Dong, R. G. Dong, S. Rakheja, D. E. Welcome, T. W.
McDowell, and J. Z. Wu, “A method for analyzing absorbed
power distribution in the hand and arm substructures when
operating vibrating tools,” Journal of Sound and Vibration, vol.
311, no. 3–5, pp. 1286–1304, 2008.
 International Standard ISO 2631-1: 1997/Amd 1:2000 (E).
Mechanical vibration and shock—evaluation of human exposure
to whole body vibration—part 1: general requirements;
 X. Xie, Absorbed power as a measure of whole body vehicular
vibration exposure, M.S. thesis, Department of Mechanical
and Industrial Engineering, Concordia University, Montr´eal,
 N. Nawayseh and M. J. Griffin, “A model of the vertical
apparent mass and the fore-and-aft cross-axis apparent mass
of the human body during vertical whole-body vibration,”
Journal of Sound and Vibration, vol. 319, no. 1-2, pp. 719–730,
 A. G. Mayton, N. K. Kittusamy, D. H. Ambrose, C. C.
Jobes, and M. L. Legault, “Jarring/jolting exposure and musculoskeletal
symptoms among farm equipment operators,”
International Journal of Industrial Ergonomics, vol. 38, no. 9-
10, pp. 758–766, 2008.
 Y. Yang,W. Ren, L. Chen,M. Jiang, and Y. Yang, “Study on ride
comfort of tractor with tandem suspension based on multibody
system dynamics,” Applied Mathematical Modelling, vol.
33, no. 1, pp. 11–33, 2009.
 W.Wang, S. Rakheja, and P.-E´ . Boileau, “Relationship between
measured apparent mass and seat-to-head transmissibility
responses of seated occupants exposed to vertical vibration,”
Journal of Sound and Vibration, vol. 314, no. 3–5, pp. 907–922,
 S. Rakheja, J. Z. Wu, R. G. Dong, A. W. Schopper, and P.-E´ .
Boileau, “A comparison of biodynamic models of the human
hand-arm system for applications to hand-held power tools,”
Journal of Sound and Vibration, vol. 249, no. 1, pp. 55–82,
 D. D. Reynolds and E. N. Angevine, “Hand-arm vibration,
part II: vibration transmission characteristics of the hand and
arm,” Journal of Sound and Vibration, vol. 51, no. 2, pp. 255–
 R. G. Dong, A. W. Schopper, T. W. McDowell et al.,
“Vibration energy absorption (VEA) in human fingers-handarm
system,” Medical Engineering & Physics, vol. 26, no. 6, pp.
 B. Bazrgari, A. Shirazi-Adl, and M. Kasra, “Computation of
trunk muscle forces, spinal loads and stability in whole-body
vibration,” Journal of Sound and Vibration, vol. 318, no. 4-5,
pp. 1334–1347, 2008.
 A. Godfrey, R. Conway, D.Meagher, and G. O´ Laighin, “Direct
measurement of human movement by accelerometry,” Medical
Engineering and Physics, vol. 30, no. 10, pp. 1364–1386, 2008.
 R. B. Bhat and P. P. Bhat, “Biomechanical considerations in
antenatal care of high risk pregnancies,” in Proceedings of the
18th Biennial Conference on Mechanical Vibration and Noise,
pp. 911–915, Pittsburgh, PA, USA, September 2001.
 R. B. Bhat, “Dynamic response of whole body systemsubjected
to walking generated excitation,” in Proceedings of the 19th
ASME Biennial Conference on Mechanical Vibration and Noise
(VIB ’03), vol. 5, pp. 1555–1558, Chicago, IL, USA, 2003.
 C. A. McGibbon, “Toward a better understanding of gait
changes with age and disablement: neuromuscular adaptation,”
Exercise and Sport Sciences Reviews, vol. 31, no. 2, pp.
 C. L. Lewis and D. P. Ferris, “Walking with increased
ankle pushoff decreases hip muscle moments,” Journal of
Biomechanics, vol. 41, no. 10, pp. 2082–2089, 2008.
 M. Garcia, A. Chatterjee, A. Ruina, and M. Coleman, “The
simplest walking model: stability, complexity, and scaling,”
Journal of Biomechanical Engineering, vol. 120, no. 2, pp. 281–
 F. Gustafsson and N. Bergman, MATLAB for Engineers
Explained, Springer, New York, NY, USA, 2003.
 E. Asmussen and K. Klausen, “Form and function of the erect
human spine,” Clinical Orthopaedics, vol. 25, pp. 55–63, 1962.
 M. J. Mueller, S. D. Minor, S. A. Sahrmann, J. A. Schaaf, and
M. J. Strube, “Differences in the gait characteristics of patients
with diabetes and peripheral neuropathy compared with agematched
controls,” Physical Therapy, vol. 74, no. 4, pp. 299–
 M. J. Mueller, D. R. Sinacore, S. Hoogstrate, and L. Daly, “Hip
and ankle walking strategies: effect on peak plantar pressures
and implications for neuropathic ulceration,” Archives of
PhysicalMedicine and Rehabilitation, vol. 75, no. 11, pp. 1196–
 C. L. Lewis and S. A. Sahrmann, “Acetabular labral tears,”
Physical Therapy, vol. 86, no. 1, pp. 110–121, 2006.
 S. H. Collins, P. G. Adamczyk, and A. D. Kuo, “Dynamic arm
swinging in human walking,” Proceedings of the Royal Society
B, vol. 276, no. 1673, pp. 3679–3688, 2009.
 R. Kram, A. Domingo, and D. P. Ferris, “Effect of reduced
gravity on the preferred walk-run transition speed,” Journal of
Experimental Biology, vol. 200, no. 4, pp. 821–826, 1997.
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