TY - JOUR
T1 - Effects of Mental and Physical Fatigue Inducing Tasks on Balance and Gait Characteristics
AU - Lee, Youngjae
AU - Ulman, Sophia
AU - Kim, Sunwook
AU - Srinivasan, Divya
N1 - Publisher Copyright:
© 2019 by Human Factors and Ergonomics Society.
PY - 2019
Y1 - 2019
N2 - Fatigue may reduce human performance and increase injury risk. This study investigated the effects of mental and physical fatigue inducing tasks (MF and PF) on balance and gait characteristics of healthy young adults (n = 10; gender balanced). During quiet stance, PF led to increases in center-of-pressure mean velocity and sway area. Although MF was associated with the same trend, the differences were not statistically significant. Among gait measures, PF was associated with expected changes in mean spatiotemporal measures (shorter and faster steps). However, MF was associated with increased inter-trial variability (standard deviations) in stride and stance times, and decreased variability in step width. Furthermore, detrended fluctuation analysis (DFA) exponent of step width, indicating the presence of long-range persistent correlations across time, decreased significantly after both MF and PF.
AB - Fatigue may reduce human performance and increase injury risk. This study investigated the effects of mental and physical fatigue inducing tasks (MF and PF) on balance and gait characteristics of healthy young adults (n = 10; gender balanced). During quiet stance, PF led to increases in center-of-pressure mean velocity and sway area. Although MF was associated with the same trend, the differences were not statistically significant. Among gait measures, PF was associated with expected changes in mean spatiotemporal measures (shorter and faster steps). However, MF was associated with increased inter-trial variability (standard deviations) in stride and stance times, and decreased variability in step width. Furthermore, detrended fluctuation analysis (DFA) exponent of step width, indicating the presence of long-range persistent correlations across time, decreased significantly after both MF and PF.
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U2 - 10.1177/1071181319631401
DO - 10.1177/1071181319631401
M3 - Conference article
AN - SCOPUS:85090594870
SN - 1071-1813
VL - 63
SP - 1103
EP - 1104
JO - Proceedings of the Human Factors and Ergonomics Society
JF - Proceedings of the Human Factors and Ergonomics Society
IS - 1
T2 - 63rd International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2019
Y2 - 28 October 2019 through 1 November 2019
ER -