TY - GEN
T1 - The Influence of Information Acquisition Strategies on Foot Proprioception and Obstacle Avoidance Pattern in People with Low Vision
AU - Uno, Tadashi
AU - Loh, Ping Yeap
AU - Muraki, Satoshi
PY - 2019/1/1
Y1 - 2019/1/1
N2 - The purpose of this study was to understand the influence of various information acquisition strategies on foot proprioception and obstacle avoidance in people with low vision. Ten adult males (41.0 ± 7.1 years) with pigmentary retinal degeneration were recruited for this study. Participants acquired obstacle information (obstacle height: 4 cm and 15 cm) through three different strategies, namely, front (A), downward (B), and tactile (C). Subsequently, the participants performed two different tasks; Task 1: After identification of the obstacles, the participants reproduced the obstacle height by lifting their foot while standing still (10 times). Task 2: Following the acquisition of the obstacle information through conditions B and C, participants performed obstacle step-over from a standing position. In task 1, condition B showed significantly higher toe-rise and coefficient of variance in toe-rise (p < 0.05) than in conditions A and C, which both displayed similar toe-rise. Likewise, in task 2, the highest points of the leading and trailing feet while stepping over the obstacle were significantly higher (p < 0.05) in condition B than in condition C. Additionally, the coefficient of effort in condition B was significantly larger (p < 0.05) than that of condition C. These results suggest that differences in information acquisition strategies have an impact on the foot trajectory during obstacle step-over. Out of the three methods used in this study, information acquisition through the tactile sense may be the best obstacle avoidance feedback method for people with low vision.
AB - The purpose of this study was to understand the influence of various information acquisition strategies on foot proprioception and obstacle avoidance in people with low vision. Ten adult males (41.0 ± 7.1 years) with pigmentary retinal degeneration were recruited for this study. Participants acquired obstacle information (obstacle height: 4 cm and 15 cm) through three different strategies, namely, front (A), downward (B), and tactile (C). Subsequently, the participants performed two different tasks; Task 1: After identification of the obstacles, the participants reproduced the obstacle height by lifting their foot while standing still (10 times). Task 2: Following the acquisition of the obstacle information through conditions B and C, participants performed obstacle step-over from a standing position. In task 1, condition B showed significantly higher toe-rise and coefficient of variance in toe-rise (p < 0.05) than in conditions A and C, which both displayed similar toe-rise. Likewise, in task 2, the highest points of the leading and trailing feet while stepping over the obstacle were significantly higher (p < 0.05) in condition B than in condition C. Additionally, the coefficient of effort in condition B was significantly larger (p < 0.05) than that of condition C. These results suggest that differences in information acquisition strategies have an impact on the foot trajectory during obstacle step-over. Out of the three methods used in this study, information acquisition through the tactile sense may be the best obstacle avoidance feedback method for people with low vision.
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UR - http://www.scopus.com/inward/citedby.url?scp=85051777974&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-96089-0_86
DO - 10.1007/978-3-319-96089-0_86
M3 - Conference contribution
AN - SCOPUS:85051777974
SN - 9783319960883
T3 - Advances in Intelligent Systems and Computing
SP - 786
EP - 790
BT - Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume II
A2 - Fujita, Yushi
A2 - Bagnara, Sebastiano
A2 - Alexander, Thomas
A2 - Tartaglia, Riccardo
A2 - Albolino, Sara
PB - Springer Verlag
T2 - 20th Congress of the International Ergonomics Association, IEA 2018
Y2 - 26 August 2018 through 30 August 2018
ER -