scholarly journals Inertial Measurement Unit Based Upper Extremity Motion Characterization for Action Research Arm Test and Activities of Daily Living

Sensors ◽  
2019 ◽  
Vol 19 (8) ◽  
pp. 1782 ◽  
Author(s):  
Hyung Seok Nam ◽  
Woo Hyung Lee ◽  
Han Gil Seo ◽  
Yoon Jae Kim ◽  
Moon Suk Bang ◽  
...  
Keyword(s):  
Action Research ◽  
Upper Extremity ◽  
Daily Living ◽  
Arm Movements ◽  
Daily Activities ◽  
Measurement Unit ◽  
Dominant Hand ◽  
Study Results ◽  
Flexion Extension ◽  
Extremity Motion

In practical rehabilitation robot development, it is imperative to pre-specify the critical workspace to prevent redundant structure. This study aimed to characterize the upper extremity motion during essential activities in daily living. An IMU-based wearable motion capture system was used to access arm movements. Ten healthy subjects performed the Action Research Arm Test (ARAT) and six pre-selected essential daily activities. The Euler angles of the major joints, and acceleration from wrist and hand sensors were acquired and analyzed. The size of the workspace for the ARAT was 0.53 (left-right) × 0.92 (front-back) × 0.89 (up-down) m for the dominant hand. For the daily activities, the workspace size was 0.71 × 0.70 × 0.86 m for the dominant hand, significantly larger than the non-dominant hand (p ≤ 0.011). The average range of motion (RoM) during ARAT was 109.15 ± 18.82° for elbow flexion/extension, 105.23 ± 5.38° for forearm supination/pronation, 91.99 ± 0.98° for shoulder internal/external rotation, and 82.90 ± 22.52° for wrist dorsiflexion/volarflexion, whereas the corresponding range for daily activities were 120.61 ± 23.64°, 128.09 ± 22.04°, 111.56 ± 31.88°, and 113.70 ± 18.26°. The shoulder joint was more abducted and extended during pinching compared to grasping posture (p < 0.001). Reaching from a grasping posture required approximately 70° elbow extension and 36° forearm supination from the initial position. The study results provide an important database for the workspace and RoM for essential arm movements.

Estimating Individual Joint Contributions to Recorded Upper Extremity Movements Using OpenSim

2013 ◽  
Author(s):  
Eric Honert ◽  
Bethany Powell ◽  
Craig M. Goehler
Keyword(s):  
Upper Extremity ◽  
Arm Movements ◽  
Simulation Environment ◽  
Prosthetic Limbs ◽  
Physical Experiments ◽  
Mechanical Devices ◽  
The Individual ◽  
Extremity Motion

A multitude of tasks are performed every day with minimal direct thought on how to orient the arm. While there have been many studies concerning upper extremity motion, there has been relatively little research reported in the area of how individual joint contributions vary between different upper extremity tasks. Such studies are necessary in order to accurately recreate dynamic motions of the arm using mechanical devices, e.g. prosthetic limbs. One difficulty in directly measuring these individual joint contributions in physical experiments is that most tasks are multi-joint movements and the limb segments influence each other causing passive interactive torques [1]. In order to quantify the individual joint contributions, it is beneficial to examine recorded arm movements within a simulation environment such as OpenSim [2].

ACTIVE EXOSKELETONS FOR UPPER-LIMB MOTION ASSIST

2007 ◽  
Vol 04 (03) ◽  
pp. 607-624 ◽  
Author(s):  
KAZUO KIGUCHI
Keyword(s):  
Upper Limb ◽  
Daily Living ◽  
Elbow Flexion ◽  
Daily Activities ◽  
Current State ◽  
Flexion Extension ◽  
State Of Research ◽  
Real Time Information ◽  
Time Information ◽  
Human Upper Limb

This paper presents the current state of research into power-assist exoskeletons for the upper limb. The assist of the upper limb is important for physically weak persons in daily activities, since upper-limb motion is involved in many important motions in daily living. The most important criterion is that power-assist exoskeletons assist the user's motion automatically in accordance with the user's motion intentions. Electromyogram (EMG) signals in which the user's motion intention is reflected could provide vital real-time information to facilitate accurate control of the power-assist exoskeleton in accordance with the user's motion intentions. A four degree-of-freedom active exoskeleton that assists human upper-limb motion (shoulder vertical flexion/extension, shoulder horizontal flexion/extension, elbow flexion/extension, and forearm supination/pronation) is also proposed.

Torso Kinematics in Human Rolling Do Not Change When Upper Extremity Motion Is Constrained

Motor Control ◽  
2021 ◽  
pp. 1-12
Author(s):  
Linh Q. Vu ◽  
Rahul Agrawal ◽  
Mahdi Hassan ◽  
Nils A. Hakansson
Keyword(s):  
Quantitative Analysis ◽  
Upper Extremity ◽  
Daily Living ◽  
Activity Of Daily Living ◽  
Kinematic Data ◽  
Angular Velocities ◽  
The Mean ◽  
Extremity Motion ◽  
Coordination Patterns

Human rolling, as turning in bed, is a fundamental activity of daily living. A quantitative analysis of rolling could help identify the neuromusculoskeletal disorders that prohibit rolling and develop interventions for individuals who cannot roll. This study sought to determine whether crossing the arms over the chest would alter fundamental coordination patterns when rolling. Kinematic data were collected from 24 subjects as they rolled with and without their arms crossed over their chest. Crossing the arms decreased the mean peak angular velocities of the shoulders (p = .001) and pelvis (p = .013) and influenced the mean duration of the roll (p = .057). There were no fundamental differences in shoulder and pelvis coordination when rolling with the arms crossed over the chest, implying that the arms may not have a major role in rolling.

STUDYING OF CHILDREN WITH MENTAL RETARDATION IN HUE CITY IN 2011

2012 ◽  
pp. 83-87
Author(s):  
Thi Minh Xuan Doan ◽  
Xuan Chuong Tran
Keyword(s):  
Mental Retardation ◽  
Cross Sectional Study ◽  
Learning Ability ◽  
Daily Activities ◽  
Sectional Study ◽  
Cross Sectional ◽  
Slow Development ◽  
Study Results

Children with mental retardation have low intelligence, slow thinking, low learning ability in comparison with the same age children. Objectives: 1. To determine the prevalence of children with mental retardation in Hue City. 2. To study some characteristics of children with mental retardation. Materials and methodes: All children with mental retardation in Hue city. Cross sectional study. Results: The prevalence of children with mental retardation (CMR) among children under 15 yrs is 0.23%, among disable children 38.16%. The highest prevalences ware in Phu Binh, Xuan Phu quarters (0.79 and 0.66%), lowest in Thuan Loc, Thuan Thanh quarters (0.03 and 0.06%). Children over 5 yrs old were 75.95%. Most of children have slow development in movement and daily activities. More than 78% have late walking, 84% have late speaking. Conclusions: The prevalence of children with mental retardation among children under 15 yrs is 0.23%, among disable children 38.16%. Most of children have slow development in movement and daily activities.

Frequency and nature of pain in patients undergoing neurorehabilitation

2020 ◽  
pp. 026921552095678
Author(s):  
Alicja Timm ◽  
Stefan Knecht ◽  
Matthias Florian ◽  
Heidrun Pickenbrock ◽  
Bettina Studer ◽  
...  
Keyword(s):  
Treatment Period ◽  
Daily Living ◽  
Severe Pain ◽  
Pain Medication ◽  
Daily Activities ◽  
Inpatient Stay ◽  
Moderate Pain ◽  
Group Level ◽  
Analog Scale ◽  
Pain Scores

Objective: This prospective study investigated the extent to which patients undergoing neurorehabilitation reported pain, how this pain developed during inpatient stay and whether patients were treated accordingly (using pain medication). Methods: The extent of pain, performance in daily activities, with a focus on possible impairment from pain, and pain medication were assessed at the beginning and the end of neurorehabilitation treatment. Overall 584 patients, with various neurological diagnoses, such as stroke, intracerebral hemorrhage, polyneuropathy, etc. were classified into four groups based on whether they reported having “no pain,” “mild pain,” “moderate pain,” or “severe pain.” All patients received conventional neurorehabilitation therapy in the Mauritius Hospital, Germany. Results: A total of 149 patients had clinically relevant pain at the beginning of their inpatient stay, at a group level this did not change significantly during the treatment period. At the end of inpatient stay, a slight increase was noted in patients reporting pain. Overall 164 patients suffered from moderate or severe pain, operationalized of pain scores >3 on the visual analog scale. A total of 145 patients who had pain at the end of inpatient stay, did not receive pain medication. There was a weak negative association between pain at baseline and activities of daily living at the end of the treatment period, such that, patients with higher pain levels tended to showed lower Barthel Index scores at the end. Conclusion: In our study, about one-third of patients suffered from clinically relevant pain during neurorehabilitation treatment and most of them did not receive any pain medication.

BIOMECHANICS OF WHEELCHAIR PROPULSION

2009 ◽  
Vol 09 (02) ◽  
pp. 229-242 ◽  
Author(s):  
CHIEN-JU LIN ◽  
PO-CHOU LIN ◽  
FONG-CHIN SU ◽  
KAI-NAN AN
Keyword(s):  
Upper Extremity ◽  
Modern Technology ◽  
Biomechanical Analysis ◽  
Daily Activities ◽  
Analytical Models ◽  
Wheelchair Propulsion ◽  
Mobility Impairments ◽  
Force Application ◽  
The Past

With progress of modern technology, manually-propelled wheelchairs are still of importance for individuals with mobility impairments. The repeated wheelchair propulsion and strenuous daily activities cause high loads and thus injuries on the upper extremity joints. Over the past few years, a considerable number of studies have been made on biomechanical analysis of wheelchair propulsion and wheelchair-related activities. Thorough investigation of biomechanics during wheelchair propulsion enhances comprehension of mechanism of injuries and provides information to improve wheelchair design and fitting. Numerous investigations have been made to demonstrate factors which cause low effectiveness of force application and inefficiency of movements. Emphasis was also placed on developing analytical models to simulate wheelchair propulsion.

scholarly journals Influence of visual feedback, hand dominance and sex on individuated finger movements

2021 ◽  
Author(s):  
Anna-Maria Johansson ◽  
Helena Grip ◽  
Louise Rönnqvist ◽  
Jonas Selling ◽  
Carl-Johan Boraxbekk ◽  
...  
Keyword(s):  
Ring Finger ◽  
The Other ◽  
Female Group ◽  
Movement Trajectory ◽  
Dominant Hand ◽  
Finger Movements ◽  
Consistent Finding ◽  
Visual Monitoring ◽  
Vision Condition ◽  
Flexion Extension

AbstractThe ability to perform individual finger movements, highly important in daily activities, involves visual monitoring and proprioception. We investigated the influence of vision on the spatial and temporal control of independent finger movements, for the dominant and non-dominant hand and in relation to sex. Twenty-six healthy middle-aged to old adults (M age = 61 years; range 46–79 years; females n = 13) participated. Participants performed cyclic flexion–extension movements at the metacarpophalangeal joint of one finger at a time while keeping the other fingers as still as possible. Movements were recorded using 3D optoelectronic motion technique (120 Hz). The movement trajectory distance; speed peaks (movement smoothness); Individuation Index (II; the degree a finger can move in isolation from the other fingers) and Stationarity Index (SI; how still a finger remains while the other fingers move) were extracted. The main findings were: (1) vision only improved the II and SI marginally; (2) longer trajectories were evident in the no-vision condition for the fingers of the dominant hand in the female group; (3) longer trajectories were specifically evident for the middle and ring fingers within the female group; (4) females had marginally higher II and SI compared with males; and (5) females had fewer speed peaks than males, particularly for the ring finger. Our results suggest that visual monitoring of finger movements marginally improves performance of our non-manipulative finger movement task. A consistent finding was that females showed greater independent finger control compared with males.

THREE DAYS MONITORING OF ACTIVITIES OF DAILY LIVING AMONG YOUNG HEALTHY ADULTS AND PARKINSON’S DISEASE PATIENTS

2021 ◽  
Vol 57 (2) ◽  
pp. 177-183
Author(s):  
Seong Hyun Moon ◽  
◽  
Rahul Soangra ◽  
Christopher F. Frames ◽  
Thurmon E. Lockhart ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Healthy Subjects ◽  
Neurodegenerative Disorder ◽  
Activity Level ◽  
Measurement Unit ◽  
Great Promise ◽  
Butterworth Filters

Parkinson’s Disease (PD) is a neurodegenerative disorder affecting the substantia nigra, which leads to more than half of PD patients are considered to be at high risk of falling. Recently, Inertial Measurement Unit (IMU) sensors have shown great promise in the classification of activities of daily living (ADL) such as walking, standing, sitting, and laying down, considered to be normal movement in daily life. Measuring physical activity level from longitudinal ADL monitoring among PD patients could provide insights into their fall mechanisms. In this study, six PD patients (mean age=74.3±6.5 years) and six young healthy subjects (mean age=19.7±2.7 years) were recruited. All the subjects were asked to wear the single accelerometer, DynaPort MM+ (Motion Monitor+, McRoberts BV, The Hague, Netherlands), with a sampling frequency of 100 Hz located at the L5-S1 spinal area for 3 days. Subjects maintained a log of activities they performed and only removed the sensor while showering or performing other aquatic activities. The resultant acceleration was filtered using high and low pass Butterworth filters to determine dynamic and stationary activities. As a result, it was found that healthy young subjects performed significantly more dynamic activities (13.2%) when compared to PD subjects (7%), in contrast, PD subjects (92.9%) had significantly more stationary activities than young healthy subjects (86.8%).

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