Comparison of Various Smoothness Metrics for Upper Limb Movements in Middle-Aged Healthy Subjects

被引:9
作者
Bayle, Nicolas [1 ,2 ]
Lempereur, Mathieu [3 ]
Hutin, Emilie [1 ,2 ]
Motavasseli, Damien [1 ,2 ]
Remy-Neris, Olivier [3 ,4 ]
Gracies, Jean-Michel [1 ,2 ]
Cornec, Gwenael [3 ,4 ]
机构
[1] Paris Est Creteil Univ UPEC, UR 7377, BIOTN, F-94000 Creteil, France
[2] Hop Univ Henri Mondor, AP HP, Serv Reeduc Neurolocomotrice, Unite Neuroreeducat, F-94000 Creteil, France
[3] Brest Univ, U1101, LaTIM, F-29200 Brest, France
[4] Univ Hosp Brest, Neurol Phys Med & Rehabil Dept, F-29200 Brest, France
关键词
motion analysis; kinematics; pointing task; smoothness metrics; SPARC; LDLJ; STROKE; ARM; COORDINATION; HEMIPARESIS; DISEASE; PEOPLE;
D O I
10.3390/s23031158
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Backgound: Metrics for movement smoothness include the number of zero-crossings on the acceleration profile (N0C), the log dimensionless jerk (LDLJ), the normalized averaged rectified jerk (NARJ) and the spectral arc length (SPARC). Sensitivity to the handedness and movement type of these four metrics was compared and correlations with other kinematic parameters were explored in healthy subjects. Methods: Thirty-two healthy participants underwent 3D upper limb motion analysis during two sets of pointing movements on each side. They performed forward- and backward-pointing movements at a self-selected speed to a target located ahead at shoulder height and at 90% arm length, with and without a three-second pause between forward and backward movements. Kinematics were collected, and smoothness metrics were computed. Results: LDLJ, NARJ and N0C found backward movements to be smoother, while SPARC found the opposite. Inter- and intra-subject coefficients of variation were lowest for SPARC. LDLJ, NARJ and N0C were correlated with each other and with movement time, unlike SPARC. Conclusion: There are major differences between smoothness metrics measured in the temporal domain (N0C, LDLJ, NARJ), which depend on movement time, and those measured in the frequency domain, the SPARC, which gave results opposite to the other metrics when comparing backward and forward movements.
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页数:14
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