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Local dynamic stability associated with load carrying

(2013) SAFETY AND HEALTH AT WORK. 4(1). p.46-51
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Abstract
Objectives: Load carrying tasks are recognized as one of the primary occupational factors leading to slip and fall injuries. Nevertheless, the mechanisms associated with load carrying and walking stability remain illusive. The objective of the current study was to apply local dynamic stability measure in walking while carrying a load, and to investigate the possible adaptive gait stability changes. Methods: Current study involved 25 young adults in a biomechanics research laboratory. One tri-axial accelerometer was used to measure three-dimensional low back acceleration during continuous treadmill walking. Local dynamic stability was quantified by the maximum Lyapunov exponent (maxLE) from a nonlinear dynamics approach. Results: Long term maxLE was found to be significant higher under load condition than no-load condition in all three reference axes, indicating the declined local dynamic stability associated with load carrying. Conclusion: Current study confirmed the sensitivity of local dynamic stability measure in load carrying situation. It was concluded that load carrying tasks were associated with declined local dynamic stability, which may result in increased risk of fall accident. This finding has implications in preventing fall accidents associated with occupational load carrying.
Keywords
Local dynamic stability, Load carrying, Fall accidents, Accelerometer

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Please use this url to cite or link to this publication:

MLA
Liu, Jian, and Thurmon Lockhart. “Local Dynamic Stability Associated with Load Carrying.” SAFETY AND HEALTH AT WORK 4.1 (2013): 46–51. Print.
APA
Liu, Jian, & Lockhart, T. (2013). Local dynamic stability associated with load carrying. SAFETY AND HEALTH AT WORK, 4(1), 46–51.
Chicago author-date
Liu, Jian, and Thurmon Lockhart. 2013. “Local Dynamic Stability Associated with Load Carrying.” Safety and Health at Work 4 (1): 46–51.
Chicago author-date (all authors)
Liu, Jian, and Thurmon Lockhart. 2013. “Local Dynamic Stability Associated with Load Carrying.” Safety and Health at Work 4 (1): 46–51.
Vancouver
1.
Liu J, Lockhart T. Local dynamic stability associated with load carrying. SAFETY AND HEALTH AT WORK. Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency; 2013;4(1):46–51.
IEEE
[1]
J. Liu and T. Lockhart, “Local dynamic stability associated with load carrying,” SAFETY AND HEALTH AT WORK, vol. 4, no. 1, pp. 46–51, 2013.
@article{5755357,
  abstract     = {Objectives: Load carrying tasks are recognized as one of the primary occupational factors leading to slip and fall injuries. Nevertheless, the mechanisms associated with load carrying and walking stability remain illusive. The objective of the current study was to apply local dynamic stability measure in walking while carrying a load, and to investigate the possible adaptive gait stability changes. Methods: Current study involved 25 young adults in a biomechanics research laboratory. One tri-axial accelerometer was used to measure three-dimensional low back acceleration during continuous treadmill walking. Local dynamic stability was quantified by the maximum Lyapunov exponent (maxLE) from a nonlinear dynamics approach. Results: Long term maxLE was found to be significant higher under load condition than no-load condition in all three reference axes, indicating the declined local dynamic stability associated with load carrying. Conclusion: Current study confirmed the sensitivity of local dynamic stability measure in load carrying situation. It was concluded that load carrying tasks were associated with declined local dynamic stability, which may result in increased risk of fall accident. This finding has implications in preventing fall accidents associated with occupational load carrying.},
  author       = {Liu, Jian and Lockhart, Thurmon},
  issn         = {2093-7911},
  journal      = {SAFETY AND HEALTH AT WORK},
  keywords     = {Local dynamic stability,Load carrying,Fall accidents,Accelerometer},
  language     = {eng},
  number       = {1},
  pages        = {46--51},
  publisher    = {Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency},
  title        = {Local dynamic stability associated with load carrying},
  url          = {http://dx.doi.org/10.5491/SHAW.2013.4.1.46},
  volume       = {4},
  year         = {2013},
}

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