Assessment of intersegmental coordination of rats during walking at different speeds - Application of continuous relative phase
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Assessment of intersegmental coordination of rats during walking at different speeds - Application of continuous relative phase. / Raffalt, Peter Christian; Nielsen, Louise R; Madsen, Stefan; Højberg, Laurits Munk; Pingel, Jessica; Nielsen, Jens Bo; Alkjær, Tine; Wienecke, Jacob.
In: Journal of Biomechanics, Vol. 73, 2018, p. 168-176.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Assessment of intersegmental coordination of rats during walking at different speeds - Application of continuous relative phase
AU - Raffalt, Peter Christian
AU - Nielsen, Louise R
AU - Madsen, Stefan
AU - Højberg, Laurits Munk
AU - Pingel, Jessica
AU - Nielsen, Jens Bo
AU - Alkjær, Tine
AU - Wienecke, Jacob
N1 - CURIS 2018 NEXS 129
PY - 2018
Y1 - 2018
N2 - The present study investigated the feasibility and reliability of continuous relative phase (CRP) and deviation phase (DP) to assess intersegmental hind limb coordination pattern and coordination variability in rats during walking. Twenty-six adult rats walked at 8 m/min, 12 m/min and 16 m/min while two-dimensional kinematics were recorded. Segment angles and segment angular velocities of the paw, shank and thigh on the left hind-limb were extracted from 15 strides and CRP was calculated for the paw-shank and shank-thigh coupling. The effect of walking speed on the time point average curve of the CRP (ACRP) and DP and on the mean ACRP and mean DP was established by statistical parametric mapping (SPM) and a one-way ANOVA for repeated measures. Absolute and relative reliability were assessed by measurement error and intra-class correlation coefficient. The SPM analysis revealed time dependent differences in the effect of speed. Thus, the CRP of the paw-shank coupling decreased with increasing speed during most of the gait cycle while the CRP of the shank-thigh coupling was decreased during the swing phase. The session-to-session reliability was fair to good for the coordination measure and poor for the variability measure.
AB - The present study investigated the feasibility and reliability of continuous relative phase (CRP) and deviation phase (DP) to assess intersegmental hind limb coordination pattern and coordination variability in rats during walking. Twenty-six adult rats walked at 8 m/min, 12 m/min and 16 m/min while two-dimensional kinematics were recorded. Segment angles and segment angular velocities of the paw, shank and thigh on the left hind-limb were extracted from 15 strides and CRP was calculated for the paw-shank and shank-thigh coupling. The effect of walking speed on the time point average curve of the CRP (ACRP) and DP and on the mean ACRP and mean DP was established by statistical parametric mapping (SPM) and a one-way ANOVA for repeated measures. Absolute and relative reliability were assessed by measurement error and intra-class correlation coefficient. The SPM analysis revealed time dependent differences in the effect of speed. Thus, the CRP of the paw-shank coupling decreased with increasing speed during most of the gait cycle while the CRP of the shank-thigh coupling was decreased during the swing phase. The session-to-session reliability was fair to good for the coordination measure and poor for the variability measure.
KW - Faculty of Science
KW - Coordination
KW - Locomotion
KW - Rodents
KW - Speed
U2 - 10.1016/j.jbiomech.2018.03.045
DO - 10.1016/j.jbiomech.2018.03.045
M3 - Journal article
C2 - 29650410
VL - 73
SP - 168
EP - 176
JO - Journal of Biomechanics
JF - Journal of Biomechanics
SN - 0021-9290
ER -
ID: 195153621