Muscle Synergy Analysis Between Young and Elderly People in Standing-Up Motion
Qi An, Yusuke Ikemoto, and Hajime Asama
The University of Tokyo, 7-3-1 Hongo, Bunkyou-ku, Tokyo 113-8656, Japan
Standing up is fundamental to daily activities of the elderly. It is necessary both to enhance muscle strength and to strengthen muscle coordination for improvement of their motor function. In this paper, we extract important data related to muscle coordination, called synergy, to perform standing motion by young and elderly participants. The contribution of muscle synergy to body kinematics is calculated through neural networks that estimate joint torque and body kinematics. To explain deficient motor function in elderly persons, extracted synergy is classified into 4 clusters based on how synergy contribute to body kinematics. Cluster analysis explains that elderly participants have weaker synergy than young persons in bending their backs to generate momentum. Compared to younger persons, older persons require additional muscle coordination to stabilize posture after standing-up in order to avoid falling.
-  K. Andersen-Ranberg, K. Christensen, B. Jeune, A. Skytthe, L. Vasegaard, and J. W. Vaupel, “Declining physical abilities with age: a cross-sectional study of older twins and centenarians in Denmark,” Age and Ageing, Vol.28, No.4, pp. 373-377, 1999.
-  P. G. Huston, “Family care of the elderly and caregiver stress,” American Family Physician, Vol.42, No.3, pp. 671-676, 1990.
-  J. M. Guralnik, E. M. Simonsick, L. Ferrucci, R. J. Glynn, L. F. Berkman, D. G. Blazer, P. A. Scherr, and R. B. Wallace, “A short physical performance battery assessing lower extremity function: association with self-reported disability and prediction of mortality and nursing home admission,” J. of Gerontology, Vol.49, No.2, pp. 85-94, 1994.
-  J. M. Guralnik, L. Ferrucci, E. M. Simonsick, M. E. Salive, and R. B. Wallace, “Lower-extremity function in persons over the Age of 70 years as a predictor of subsequent disability,” New England J. of Medicine, Vol.332, pp. 556-561, 1995.
-  M. A. Fiatarone, E. C. Marks, N. D. Ryan, C. N. Meredith, L. A. Lipsitz, and W. J. Evans, “High-intensity strength training in nonagenarians,” The J. of the American Medical Association, Vol.263, pp. 3029-3034, 1990.
-  D. G. Sale and J. D. MacDougall, “Specificity in strength training: a review for the coach and athlete,” Canadian J. of Applied Sports Science, Vol.6, pp. 87-92, 1981.
-  D. M. Buchnder, E. B. Larson, E. H. Wagner, T. D. Koepsell, and B. J. De Lateur, “Evidence for a non-linear relationship between leg strength and gait speed,” Age and Ageing, Vol.25, pp. 386-391, 1996.
-  S. E. Ross and K. M. Guskiewicz, “Effect of coordination training with and without stochastic resonance stimulation on dynamic postural stability of subjects with functional ankle instability and subjects with stable ankles,” Clinical J. of Sport Medicine, Vol.16, No.4, pp. 323-328, 2006.
-  N. Bernstein, “The co-ordination and regulation of movement,” Pergamon, Oxford, 1967.
-  Y. P. Ivanenko, R. E. Poppele, and F. Lacquaniti, “Five basic muscle activation patterns account for muscle activity during human locomotion,” The J. of Physiology, Vol.556, pp. 267-282, 2004.
-  R. R. Neptune, D. J. Clark, and S. A. Kautz, “Modular control of human walking: a simulation study,” J. of Biomechanics, Vol.42, pp. 1282-1287, 2009.
-  A. d’Avella, P. Saltiel, and E. Bizzi, “Combinations of muscle synergies in the construction of a natural motor behavior,” Nature Neuroscience, Vol.6, pp. 300-308, 2003.
-  A. d’Avella, “Decomposition of EMG patterns as combinations of time-varying muscle synergies,” First Int. IEEE EMBS Conf. on Neural Engineering 2003, Conf. Proc., pp. 55-58, 2003.
-  E. C. lauser, J. T. McConville, and J. W. Young, “Weight, volume and center of mass of segments of the human body,” Wright-Patterson Air Force Base, Ohio, AMRL Technical Report, pp. 69-70, 1969.
-  Y. Koike and M. Kawato, “Estimation of dynamic joint torques and trajectory formation from surface electromyography signals using a neural network model,” Biological Cybernetics, Vol.73, pp. 291-300, 1995.
-  M. Schenkman, R. A. Berger, O. R. Patrick, R. W. Mann, and W. A. Hodge, “Whole-body movements during rising to standing from sitting,” Physical Therapy, Vol.70, pp. 638-651, 1990.
-  W. G. M. Janssen, H. B. J. Bussmann, and H. J. Stam, “Determinants of sit-to-stand movement: a review,” Physical Therapy, Vol.82, pp. 866-879, 2002.
-  L. D. W. Vander, D. Brunt, and M. U. McGulloch, “Variant and invariant characteristics of the sit-to-stand task in healthy elderly adults,” Archives of Physical Medicine and Rehabilitation, Vol.75, pp. 653-660, 1994.
-  U. P. Arborelius, P. Wretenberg, and F. Lindberg, “The effects of armrests and high seat heights on lower-limb joint load and muscular activity during sitting and rising,” Ergonomics, Vol.35, pp. 1377-1391, 1992.
-  S. Kawagoe, N. Tajima, and E. Ghosa, “Biomechanical analysis of effects of foot placement with varying chair height on the motion of standing-up,” J. of Orthopaedic Science, Vol.5, pp. 124-133, 2000.
-  D. A. Jones, O. M. Rutherford, and D. F. Parker, “Physiological changes in skeletal muscle as a result of strength training,” Quarterly J. of Experiment Physiology, Vol.74, pp. 233-256, 1989.
-  G. C. Richard, “Changes in muscle coordination with training,” J. of Applied Physiology, Vol.101, pp. 1506-1513, 2006.
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