Influence of the Sampling Rate on the Measurements of the Upper Limb Movements

2014 ◽  
Vol 601 ◽  
pp. 163-166 ◽  
Author(s):  
Mirela Toth-Taşcău ◽  
Dan Ioan Stoia ◽  
Flavia Bălănean
Keyword(s):  
Upper Limb ◽  
Sampling Rate ◽  
Elbow Flexion ◽  
Measuring System ◽  
Shoulder Abduction ◽  
Limb Movements ◽  
Flexion Extension ◽  
Upper Limb Movements ◽  
Left And Right

The main objective of the study consists in determination of the most appropriate sampling rate of the measurements in instrumented kinematic analysis of the upper limb movements. The measuring system involved in the study is Zebris CMS-HS Measuring System, whose configuration was defined by ultrasound markers attached to specific body sites. The sampling rate interval was set from 10 to 25 Hz, according to the system’s range of frequencies. The kinematic parameters which have been analyzed are shoulder and elbow flexion-extension and shoulder abduction-adduction. A comparative kinematical analysis of the angle variations of flexion-extension and abduction-adduction in shoulder joint and flexion-extension in elbow joint was performed for both left and right upper limbs at each sampling rate.

Development of a whole arm wearable robotic exoskeleton for rehabilitation and to assist upper limb movements

Robotica ◽  
2014 ◽  
Vol 33 (1) ◽  
pp. 19-39 ◽  
Author(s):  
M. H. Rahman ◽  
M. J. Rahman ◽  
O. L. Cristobal ◽  
M. Saad ◽  
J. P. Kenné ◽  
...  
Keyword(s):  
Upper Limb ◽  
Wrist Joint ◽  
External Rotation ◽  
Lateral Side ◽  
Limb Movements ◽  
Rehabilitation Therapy ◽  
Robotic Exoskeleton ◽  
Flexion Extension ◽  
Upper Limb Movements ◽  
Physically Disabled People

SUMMARYTo assist physically disabled people with impaired upper limb function, we have developed a new 7-DOF exoskeleton-type robot named Motion Assistive Robotic-Exoskeleton for Superior Extremity (ETS-MARSE) to ease daily upper limb movements and to provide effective rehabilitation therapy to the superior extremity. The ETS-MARSE comprises a shoulder motion support part, an elbow and forearm motion support part, and a wrist motion support part. It is designed to be worn on the lateral side of the upper limb in order to provide naturalistic movements of the shoulder (vertical and horizontal flexion/extension and internal/external rotation), elbow (flexion/extension), forearm (pronation/supination), and wrist joint (radial/ulnar deviation and flexion/extension). This paper focuses on the modeling, design, development, and control of the ETS-MARSE. Experiments were carried out with healthy male human subjects in whom trajectory tracking in the form of passive rehabilitation exercises (i.e., pre-programmed trajectories recommended by a therapist/clinician) were carried out. Experimental results show that the ETS-MARSE can efficiently perform passive rehabilitation therapy.

scholarly journals Measures of Interjoint Coordination Post-stroke Across Different Upper Limb Movement Tasks

2021 ◽  
Vol 8 ◽  
Author(s):  
Anne Schwarz ◽  
Janne M. Veerbeek ◽  
Jeremia P. O. Held ◽  
Jaap H. Buurke ◽  
Andreas R. Luft
Keyword(s):  
Upper Limb ◽  
Elbow Flexion ◽  
Shoulder Abduction ◽  
Kinematic Parameters ◽  
Limb Function ◽  
Interjoint Coordination ◽  
Upper Limb Function ◽  
Shoulder Flexion ◽  
Flexion Extension ◽  
Median Slope

Background: Deficits in interjoint coordination, such as the inability to move out of synergy, are frequent symptoms in stroke subjects with upper limb impairments that hinder them from regaining normal motor function. Kinematic measurements allow a fine-grained assessment of movement pathologies, thereby complementing clinical scales, like the Fugl–Meyer Motor Assessment of the Upper Extremity (FMMA-UE). The study goal was to investigate the effects of the performed task, the tested arm, the dominant affected hand, upper limb function, and age on spatiotemporal parameters of the elbow, shoulder, and trunk. The construct validity of the metrics was examined by relating them with each other, the FMMA-UE, and its arm section.Methods: This is a cross-sectional observational study including chronic stroke patients with mild to moderate upper limb motor impairment. Kinematic measurements were taken using a wearable sensor suit while performing four movements with both upper limbs: (1) isolated shoulder flexion, (2) pointing, (3) reach-to-grasp a glass, and (4) key insertion. The kinematic parameters included the joint ranges of shoulder abduction/adduction, shoulder flexion/extension, and elbow flexion/extension; trunk displacement; shoulder–elbow correlation coefficient; median slope; and curve efficiency. The effects of the task and tested arm on the metrics were investigated using a mixed-model analysis. The validity of metrics compared to clinically measured interjoint coordination (FMMA-UE) was done by correlation analysis.Results: Twenty-six subjects were included in the analysis. The movement task and tested arm showed significant effects (p < 0.05) on all kinematic parameters. Hand dominance resulted in significant effects on shoulder flexion/extension and curve efficiency. The level of upper limb function showed influences on curve efficiency and the factor age on median slope. Relations with the FMMA-UE revealed the strongest and significant correlation for curve efficiency (r = 0.75), followed by shoulder flexion/extension (r = 0.68), elbow flexion/extension (r = 0.53), and shoulder abduction/adduction (r = 0.49). Curve efficiency additionally correlated significantly with the arm subsection, focusing on synergistic control (r = 0.59).Conclusion: The kinematic parameters of the upper limb after stroke were influenced largely by the task. These results underpin the necessity to assess different relevant functional movements close to real-world conditions rather than relying solely on clinical measures.Study Registration: clinicaltrials.gov, identifier NCT03135093 and BASEC-ID 2016-02075.

scholarly journals Measuring Upper Limb Kinematics of Forehand and Backhand Topspin Drives with IMU Sensors in Wheelchair and Able-Bodied Table Tennis Players

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8303
Author(s):  
Jia-Wen Yam ◽  
Jing-Wen Pan ◽  
Pui-Wah Kong
Keyword(s):  
Upper Limb ◽  
Wrist Joint ◽  
Elbow Flexion ◽  
Measurement Unit ◽  
Shoulder Abduction ◽  
Table Tennis ◽  
Tennis Players ◽  
Movement Strategies ◽  
Flexion Extension ◽  
Limb Kinematics

To better understand the biomechanics of para-table tennis players, this study compared the shoulder, elbow, and wrist joint kinematics among able-bodied (AB) and wheelchair players in different classifications. Nineteen participants (AB, n = 9; classification 1 (C1), n = 3; C2, n = 3; C3, n = 4) executed 10 forehand and backhand topspin drives. Shoulder abduction/adduction, elbow flexion/extension, wrist extension/flexion, respective range of motion (ROM), and joint patterns were obtained using inertial measurement unit (IMU) sensors. The results showed clear differences in upper limb kinematics between the able-bodied and wheelchair players, especially in the elbow and wrist. For the para-players, noticeable variations in techniques were also observed among the different disability classes. In conclusion, wheelchair players likely adopted distinct movement strategies compared to AB to compensate for their physical impairments and functional limitations. Hence, traditional table tennis programs targeting skills and techniques for able-bodied players are unsuitable for para-players. Future work can investigate how best to customize training programs and to optimize movement strategies for para-players with varied types and degrees of impairment.

Particularities of Upper Limb Movements of Healthy and Pathologic Subjects

2013 ◽  
Vol 430 ◽  
pp. 203-207
Author(s):  
Mirela Toth-Taşcău ◽  
Flavia Bălănean ◽  
Dan Ioan Stoia
Keyword(s):  
Upper Limb ◽  
Elbow Joint ◽  
Distal Humerus ◽  
Joint Angles ◽  
Kinematic Parameters ◽  
Angle Variation ◽  
Flexion Extension ◽  
Upper Limb Movements ◽  
Left And Right ◽  
Time Standard

The paper presents a comparative study of the kinematic parameters of the upper limbs of one healthy subject and one patient with lateral distal humerus implant. This study aims to identify the movement patterns of the upper limb joints, having a particular interest in elbow joint, due to the patients pathology. Both subjects have been recorded in identical conditions, performing the same exercise what simulates one of the common daily activities. The kinematic parameters which have been analyzed were flexion-extension and abduction-adduction in shoulder joint and flexion-extension of the elbow joint. The joint angles have been averaged per each valid trial and exercise. The comparison of the joint angle variation was performed in terms of normalized time. Standard deviation was computed to evaluate the variability of joint angles. Movement symmetry between left and right arms was evaluated by computing the p-values of the averaged series.

scholarly journals Wearable upper limb motion assist robot for eating activity

2020 ◽  
Vol 1 (1) ◽  
pp. 1-10
Author(s):  
Uzair Kashtwari ◽  
Norsinnira Zainul Azlan ◽  
Ifrah Shahdad
Keyword(s):  
Upper Limb ◽  
Daily Living ◽  
Degrees Of Freedom ◽  
Low Cost ◽  
Elbow Flexion ◽  
Disabled People ◽  
Flexion Extension ◽  
Feeding Cycle ◽  
The Disabled ◽  
Upper Limb Movements

Many people all around the world are suffering from various types of disabilities and need to depend on others to perform activities of daily living. One of the essential daily living activities is eating. The disabled people should be able to eat their food independently at any time and place, without relying on the caregivers. This paper presents the development of a new wearable upper limb motion assist robot for helping the disabled to eat by themselves. The motion assists robot consists of two degrees of freedom (DOF) movement, focusing on the two most crucial upper limb movements in eating activity, which is the elbow flexion/extension and forearm pronation/supination. A light-weight material was used for the fabrication of the wearable motion assist robot, and Arduino was utilized as the microcontroller. The originality of the study was in terms of the design, operational sequence setting, and kinematic analysis of the wearable upper limb motion assist robot that was explicitly focusing on eating activity. The resulted prototype was portable, compact, light in weight, simple and low cost. The experimental results have proven that the proposed wearable upper limb motion assist robot for eating activity was successful in helping the users to perform the main upper extremity motions in eating. The success rate of the proposed system was 80%, and it took 6 seconds for the system to complete one feeding cycle.

scholarly journals Characterising Upper Limb Movements in Huntington's Disease and the Impact of Restricted Visual Cues

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0133709 ◽  
Author(s):  
Jessica Despard ◽  
Anne-Marie Ternes ◽  
Bleydy Dimech-Betancourt ◽  
Govinda Poudel ◽  
Andrew Churchyard ◽  
...  
Keyword(s):  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Upper Limb ◽  
Visual Cues ◽  
Limb Movements ◽  
Upper Limb Movements ◽  
The Impact

Clinical findings in C5-C6 and C5-C7 root palsies with brachial plexus traction lesions

2012 ◽  
Vol 38 (3) ◽  
pp. 237-241 ◽  
Author(s):  
J. A. Bertelli ◽  
M. F. Ghizoni
Keyword(s):  
Brachial Plexus ◽  
External Rotation ◽  
Elbow Flexion ◽  
Clinical Findings ◽  
Hand Strength ◽  
Shoulder Abduction ◽  
Finger Extension ◽  
Root Injury ◽  
Flexion Extension

Stretch injuries of the C5-C7 roots of the brachial plexus traditionally have been associated with palsies of shoulder abduction/external rotation, elbow flexion/extension, and wrist, thumb, and finger extension. Based on current myotome maps we hypothesized that, as far as motion is concerned, palsies involving C5-C6 and C5-C7 root injuries should be similar. In 38 patients with upper-type palsies of the brachial plexus, we examined for correlations between clinical findings and root injury level, as documented by CT tomomyeloscan. Contrary to commonly held beliefs, C5-C7 root injuries were not associated with loss of extension of the elbow, wrist, thumb, or fingers, but residual hand strength was much lower with C5-C7 vs C5-C6 lesions.

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