TY - JOUR
T1 - Nonlinear dynamic measures for evaluating postural control in individuals with and without chronic ankle instability
AU - Terada, Masafumi
AU - Carey, Sara
AU - Pietrosimone, Brian
AU - Whitaker, Heather
AU - Beard, Megan
AU - Pfile, Kate
AU - Rullestad, Elizabeth
AU - Gribble, Phillip
N1 - Publisher Copyright:
© 2019 Human Kinetics, Inc.
PY - 2019
Y1 - 2019
N2 - This study aimed to compare time-to-boundary and sample entropy during a single-leg balance task between individuals with chronic ankle instability (CAI), lateral ankle sprain copers, and healthy controls. Twenty-two participants with CAI, 20 lateral ankle sprain copers, and 24 healthy controls performed a single-leg balance task during an eyes-closed condition. Participants with CAI exhibited lower time-to-boundary values compared with lateral ankle sprain copers and healthy controls. However, we did not find differences in sample entropy variables between cohorts. A decrease in time-to-boundary values in participants with CAI indicated that CAI may constrain the ability of the sensorimotor system to maintain the center of pressure within the boundaries of the base of support. However, the regularity of the center of pressure velocity time series appears not to be altered in the CAI cohort in this study.
AB - This study aimed to compare time-to-boundary and sample entropy during a single-leg balance task between individuals with chronic ankle instability (CAI), lateral ankle sprain copers, and healthy controls. Twenty-two participants with CAI, 20 lateral ankle sprain copers, and 24 healthy controls performed a single-leg balance task during an eyes-closed condition. Participants with CAI exhibited lower time-to-boundary values compared with lateral ankle sprain copers and healthy controls. However, we did not find differences in sample entropy variables between cohorts. A decrease in time-to-boundary values in participants with CAI indicated that CAI may constrain the ability of the sensorimotor system to maintain the center of pressure within the boundaries of the base of support. However, the regularity of the center of pressure velocity time series appears not to be altered in the CAI cohort in this study.
KW - Balance
KW - Copers
KW - Joint injury
KW - Movement variability
KW - Sensorimotor system
UR - http://www.scopus.com/inward/record.url?scp=85063969312&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063969312&partnerID=8YFLogxK
U2 - 10.1123/mc.2017-0001
DO - 10.1123/mc.2017-0001
M3 - Article
C2 - 30318988
AN - SCOPUS:85063969312
SN - 1087-1640
VL - 23
SP - 243
EP - 261
JO - Motor Control
JF - Motor Control
IS - 2
ER -