Upper-Limb Kinematics During Feeding and Drinking
Feeding and drinking are Activities of Daily Living which can be used to assess the motor control and functional ability of the upper limb. This paper presents the upper-limb kinematics during the execution of feeding and drinking activities, such analysi
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ón de Ciencias e Ingenierías DIQEB, Universidad de Guanajuato, León, Guanajuato, México 2 Facultad de Ingeniería, DCR, Universidad Nacional Autónoma de México, México DF 3 Divisi´on de Ciencias Naturales y Exactas, DB, Universidad de Guanajuato, Guanajuato Guanajuato, México
Abstract— Feeding and drinking are Activities of Daily Living which can be used to assess the motor control and functional ability of the upper limb. This paper presents the upperlimb kinematics during the execution of feeding and drinking activities, such analysis consisted in the measurement of angles of flexion for trunk and arm. Eight healthy subjects performed these activities in a simulated-environment while they were video recorded. Markers on anatomical landmarks were used to analyze the kinematics of the upper limb in the sagittal plane. Additionally an electro-hydraulic sensor was attached to each upper limb to assess the vertical position of the wrist relative to the shoulder. Results showed a difference on the angles of the elbow and trunk. The electro-hydraulic sensor showed to be an efficient way to record the vertical position of wrist. Keywords— upper limb, ADL, joint angles
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patterns during the execution of some ADL [5, 12]. There has been suggested a variety of ADL in the literature [13, 14]. Therefore, a standard set of ADL to assess upper-limb function has not been defined. Moreover, the upper limb kinematics during the performance of ADL might show differences even on non-pathological participants. Recently, it has been suggested the Reaching and Hand- to-Mouth Evaluation Method to assess upper-limb function in neurological patients [15, 16]. The aim of this study is to analyze the kinematics of hand-to-mouth movement through task-oriented activities (feeding and drinking) and by using a minimal technology. The latter will help to translate the methodology to a clinical environment. Additionally, a brief comparison with a portable sensor was done. This will help to establish a method based on wearable sensors.
I NTRODUCTION
Kinematic analysis of task-oriented activities plays a fundamental role to asses functional movement. Functional evaluations refer to those evaluations that use real life activities, such as feeding and drinking. Task-oriented evaluations examine aspects of motor function through simulating a useful or familiar task. The kinematic analysis can help to depict the physical performance component of functional movement such as range of motion, strength, joint angles, etc. [1, 2]. Accurate quantification of joint motion of upper limbs gives important information about the differences between healthy subjects and people with joint injuries or limited movement. Such information can be used to improve the rehabilitation interventions [3]. There are a numerous quantity of analysis techniques for upper limb movements, which can be classified in two paradigms: one approach is based on markers and video-cameras [4, 5, 2, 6]. Other approaches are based on wearable sensors, such as magnetometers and inertial sensors [7
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