skip to main content
10.1145/2093698.2093882acmotherconferencesArticle/Chapter ViewAbstractPublication PagesisabelConference Proceedingsconference-collections
research-article

The effect of load on variances of object replacing arm movements

Published: 26 October 2011 Publication History

Abstract

A three-dimensional (3D) dynamic upper limb model was developed to simulate muscle forces in slightly restricted point-to-point movements. Healthy subjects performed point-to-point movements repetitively with an object held in the hand. The object was either a very light (0.06kg) or a heavier one (2kg). Joint coordinates were recorded. Using joint coordinates, and muscle attachment sites taken from the literature, virtual muscle forces acted during the execution of the movement were calculated for 4 arm muscles. Variances of hand position trajectories, joint configuration trajectories and muscle activities (measured EMG and muscle forces of biceps, triceps, delta anterior and delta posterior) were calculated for both object conditions. There were no significant differences for hand position and arm configuration variances considering the two object conditions while muscle activity variances (for all muscles except deltoid posterior) increased significantly by executing the movement with heavier object. Since high muscle activity variances didn't result equally high increments in kinematic variances we suggest that the stabilization of the outer descriptors (kinematic properties) of the arm is resulted by the enhanced muscle cooperation through synergies when the motor task was performed with heavier object in the hand.

References

[1]
Bernstein, N. 1967. The co-ordination and regulation of movements. Neuropsychologia. 6, 1 (1967), 215.
[2]
Domkin, D. et al. 2005. Joint angle variability in 3D bimanual pointing: uncontrolled manifold analysis. Experimental Brain Research. 163, 1 (2005), 44--57.
[3]
Domkin, D. et al. 2002. Structure of joint variability in bimanual pointing tasks. Experimental Brain Research. 143, 1 (2002), 11--23.
[4]
Keresztényi, Z. et al. 2009. The relation of hand and arm configuration variances while tracking geometric figures in Parkinson's disease: aspects for rehabilitation. International journal of rehabilitation research Internationale Zeitschrift fur Rehabilitationsforschung Revue internationale de recherches de readaptation. 32, 1 (2009), 53--63.
[5]
Laczko, J., et.al. 1987. Computer Modeling of Human Forelimb Muscle Activation in Multidimensional Intrinsic Coordinate Frames. Society fot Neuroscience. Abstract. 14/2:955.
[6]
Laczkó, J. and Keresztényi, Z. 2007. Variances of hand positions and arm configurations during arm movements under external load and without external load. Motor Control. 11 (2007), 127.
[7]
Latash, M. L. 1993. Control of human movement. Human Kinetics.
[8]
Latash, M. L. et al. 2005. Postural synergies and their development. Neural Plasticity. 12, 2--3 (2005), 119--30; discussion 263--72.
[9]
Levin, M. F. 1996. Interjoint coordination during pointing movements is disrupted in spastic hemiparesis. Brain: A journal of neurology. 119, 1 (1996), 281--293.
[10]
Loukopoulos, L. D. et al. 2001. Planning of reach-and-grasp movements: effects of validity and type of object information. Journal of Motor Behavior. 33, 3 (2001), 255--264.
[11]
Scholz, J. P. and Latash, M. L. 1998. A study of a bimanual synergy associated with holding an object. Human Movement Science. 17, (1998), 753--779.
[12]
Tibold, R. et al. 2011. Three-dimensional model to predict muscle forces and their relation to motor variances in reaching arm movements. Journal of Applied Biomechanics. 27, (2011), 362--374.

Index Terms

  1. The effect of load on variances of object replacing arm movements

    Recommendations

    Comments

    Information & Contributors

    Information

    Published In

    cover image ACM Other conferences
    ISABEL '11: Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies
    October 2011
    949 pages
    ISBN:9781450309134
    DOI:10.1145/2093698
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

    Sponsors

    • Universitat Pompeu Fabra
    • IEEE
    • Technical University of Catalonia Spain: Technical University of Catalonia (UPC), Spain
    • River Publishers: River Publishers
    • CTTC: Technological Center for Telecommunications of Catalonia
    • CTIF: Kyranova Ltd, Center for TeleInFrastruktur

    Publisher

    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 26 October 2011

    Permissions

    Request permissions for this article.

    Check for updates

    Author Tags

    1. motion analysis
    2. motor apparatus
    3. variance

    Qualifiers

    • Research-article

    Funding Sources

    • Hungarian Scientific Council of Healthcare

    Conference

    ISABEL '11
    Sponsor:
    • Technical University of Catalonia Spain
    • River Publishers
    • CTTC
    • CTIF

    Contributors

    Other Metrics

    Bibliometrics & Citations

    Bibliometrics

    Article Metrics

    • 0
      Total Citations
    • 42
      Total Downloads
    • Downloads (Last 12 months)0
    • Downloads (Last 6 weeks)0
    Reflects downloads up to 10 Feb 2025

    Other Metrics

    Citations

    View Options

    Login options

    View options

    PDF

    View or Download as a PDF file.

    PDF

    eReader

    View online with eReader.

    eReader

    Figures

    Tables

    Media

    Share

    Share

    Share this Publication link

    Share on social media