Can't be applied to stroke survivors since none seemed to be in the test subjects. I despised BWSTT because it did nothing to control my spasticity. Fix my spasticity and I would walk normally in no time.
Aging and partial body weight support affects gait variability
2008, Journal of NeuroEngineering and Rehabilitation
Anastasia Kyvelidou†1, Max J Kurz†1,2, Julie L Ehlers†1 and Nicholas Stergiou*1,3
Address: 1HPER Biomechanics Lab, University of Nebraska at Omaha, 6001 Dodge Street Omaha, NE 68182-0216, USA, 2Laboratory of Integrated Physiology, University of Houston, 3855 Holman Street Houston, TX 77204-6015, USA and 3Environmental, Agricultural and Occupational Health Sciences, College of Public Health, University of Nebraska Medical Center, 985450 Nebraska Medical Center, Omaha, NE 68198-5450, USA Email: Anastasia Kyvelidou - akyvelidou@mail.unomaha.edu; Max J Kurz - mkurz@mail.coe.uh.edu; Julie L Ehlers - jlehlers@unmc.edu; Nicholas Stergiou* - nstergiou@mail.unomaha.edu * Corresponding author †Equal contributors
Address: 1HPER Biomechanics Lab, University of Nebraska at Omaha, 6001 Dodge Street Omaha, NE 68182-0216, USA, 2Laboratory of Integrated Physiology, University of Houston, 3855 Holman Street Houston, TX 77204-6015, USA and 3Environmental, Agricultural and Occupational Health Sciences, College of Public Health, University of Nebraska Medical Center, 985450 Nebraska Medical Center, Omaha, NE 68198-5450, USA Email: Anastasia Kyvelidou - akyvelidou@mail.unomaha.edu; Max J Kurz - mkurz@mail.coe.uh.edu; Julie L Ehlers - jlehlers@unmc.edu; Nicholas Stergiou* - nstergiou@mail.unomaha.edu * Corresponding author †Equal contributors
Abstract
Background:
Aging leads to increases in gait variability which may explain the large incidence of falls in the elderly. Body weight support training may be utilized to improve gait in the elderly and minimize falls. However, before initiating rehabilitation protocols, baseline studies are needed to identify the effect of body weight support on elderly gait variability. Our purpose was to determine the kinematic variability of the lower extremities in young and elderly healthy females at changing levels of body weight support during walking.
Methods:
Ten young and ten elderly females walked on a treadmill for two minutes with a body weight support (BWS) system under four different conditions: 1 g, 0.9 g, 0.8 g, and 0.7 g. Three dimensional kinematics was captured at 60 Hz with a Peak Performance high speed video system. Magnitude and structure of variability of the sagittal plane angular kinematics of the right lower extremity was analyzed using both linear (magnitude; standard deviations and coefficient of variations) and nonlinear (structure; Lyapunov exponents) measures. A two way mixed ANOVA was used to evaluate the effect of age and BWS on variability. Results: Linear analysis showed that the elderly presented significantly more variability at the hip and knee joint than the young females. Moreover, higher levels of BWS presented increased variability at all joints as found in both the linear and nonlinear measures utilized.
Conclusion:
Increased levels of BWS increased lower extremity kinematic variability. If the intent of BWS training is to decrease variability in gait patterns, this did not occur based on our results. However, we did not perform a training study. Thus, it is possible that after several weeks of training and increased habituation, these initial increased variability values will decrease. This assumption needs to be addressed in future investigation with both "healthy" elderly and elderly fallers. In addition, it is possible that BWS training can have a positive transfer effect by bringing overground kinematic variability to healthy normative levels, which also needs to be explored in future studies.
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