Graduation Date
Spring 5-8-2021
Document Type
Thesis
Degree Name
Master of Science (MS)
Programs
Medical Sciences Interdepartmental Area
First Advisor
Ka-Chun Siu
Abstract
Studying biomechanical characteristics of human motion sheds light on the motor control strategies in the central nervous system. Slope walking and obstacle negotiation appear to have some similarities in control strategies based on subjective observation, but these two motions have never been compared objectively in biomechanics literature. This study aimed to investigate the similarities between obstacle negotiation and slope walking in kinematics and muscle activity. The similarities were determined by the correlation of the maximum heel elevation and muscle co-activation index between obstacle negotiation and inclined treadmill walking. The strength of correlation was compared in four different pairs of conditions: 1) no-obstacle and level treadmill; 2) 3.9cm-obstacle and 5% inclined treadmill; 3) 7.8cm-obstacle and 10% inclined treadmill; 4) 11.5cm-obstacle and 15% inclined treadmill. The correlations of maximum heel elevation between obstacle negotiation and inclined treadmill walking varied from weak to very strong (r = 0.24 - 0.81) across all four pairs of conditions. The muscle co-activation index was strongly to very strongly correlated (r = 0.68 - 0.83) between two motions across all four conditions. In conclusion, there was a certain level of similarity in kinematics and muscle activities between obstacle negotiation and inclined treadmill walking, especially between obstacle negotiation with a 3.9cm-high obstacle and 5% inclined treadmill walking and between obstacle negotiation with an 11.5cm-high obstacle and 15% inclined treadmill walking.
Recommended Citation
Lu, Jiani, "Is the Walking Pattern Similar Between Slope Walking and Obstacle Negotiation?" (2021). Theses & Dissertations. 536.
https://digitalcommons.unmc.edu/etd/536