On the Use of Surface EMG for Recognizing Forearm Movements: Towards the Control of an Upper Extremity Exoskeleton

2012 ◽  
Author(s):  
A. Lopez Delis ◽  
L. Mayeta Revilla ◽  
D. Delisle Rodriguez ◽  
A.F. Ruiz Olaya
Keyword(s):  
Upper Extremity ◽  
Surface Emg

scholarly journals Rehabilitation of Upper Extremity Nerve Injuries Using Surface EMG Biofeedback: Protocols for Clinical Application

2018 ◽  
Vol 12 ◽  
Author(s):  
Agnes Sturma ◽  
Laura A. Hruby ◽  
Cosima Prahm ◽  
Johannes A. Mayer ◽  
Oskar C. Aszmann
Keyword(s):  
Upper Extremity ◽  
Clinical Application ◽  
Surface Emg ◽  
Emg Biofeedback ◽  
Nerve Injuries

Normalising surface EMG of ten upper-extremity muscles in handcycling: Manual resistance vs. sport-specific MVICs

2020 ◽  
Vol 51 ◽  
pp. 102402 ◽  
Author(s):  
Oliver J. Quittmann ◽  
Joshua Meskemper ◽  
Kirsten Albracht ◽  
Thomas Abel ◽  
Tina Foitschik ◽  
...  
Keyword(s):  
Upper Extremity ◽  
Surface Emg

scholarly journals Inhibitory Effect of Needle Penetration on Vibration-Induced Finger Flexion Reflex in Humans

2010 ◽  
Vol 28 (2) ◽  
pp. 78-82 ◽  
Author(s):  
Nobuari Takakura ◽  
Hiroyoshi Yajima ◽  
Miho Takayama ◽  
Akiko Kawase ◽  
Ikuo Homma
Keyword(s):  
Healthy Volunteers ◽  
Upper Extremity ◽  
Surface Emg ◽  
Inhibitory Effect ◽  
Vibratory Stimulation ◽  
Flexion Reflex ◽  
Needle Penetration ◽  
Finger Flexion ◽  
Flexor Muscles ◽  
The Right

Background Vibration-induced finger flexion reflex (VFR) in the upper extremity is inhibited by needle insertion acupuncture to the large intestine 4 (LI4) at the hand. This claim has a limitation because the inhibitory effect is deduced only from reduction in the maximum finger flexion (FF) force during the tonic flexion reflex by vibratory stimulation after acupuncture. Methods The study was a crossover design with two conditions—acupuncture and control—to which 16 healthy volunteers were subjected. VFR in the upper extremity was induced by applying vibratory stimulation on the volar side of the middle fingertip of the right hand, before and after acupuncture at the right LI4 in 16 healthy volunteers. We measured the area under the curve (AUC) of finger flexion force and surface electromyogram (EMG) in the flexor muscles, in addition to the maximum FF force during vibratory stimulation. We compared AUC, surface EMG and maximum FF force in the acupuncture condition with those in the control condition. We also estimated the correlation between AUC, surface EMG and maximum FF force. Results AUC, surface EMG and maximum FF force were significantly reduced (p <0.01) after acupuncture compared with those of the control group. A strong correlation was observed in maximum FF force versus AUC (r=0.98, p <0.01) and surface EMG (r=0.77, p <0.01). Conclusions Acupuncture at ipsilateral LI4 inhibited tonic activities in the finger flexor muscles during VFR, which suggests that afferent input with needle penetration has inhibitory effect on the motor neuronal activities in the reflex circuits of VFR.

Upper Extremity and Cue Kinematics, and Shoulder Muscle Electromyographic Activity of Novus Players of Different Skill Levels

2017 ◽  
Vol 33 (2) ◽  
pp. 124-129
Author(s):  
Viire Talts ◽  
Jaan Ereline ◽  
Tatjana Kums ◽  
Mati Pääsuke ◽  
Helena Gapeyeva
Keyword(s):  
Upper Extremity ◽  
Movement Analysis ◽  
Trapezius Muscle ◽  
Elbow Flexion ◽  
Surface Emg ◽  
Emg Activity ◽  
Electromyographic Activity ◽  
Recruitment Pattern ◽  
Skill Levels ◽  
Analysis System

Our aim with the current study was to compare upper extremity and cue kinematics, and electromyographic (EMG) activation of shoulder muscles during novus (a special form of billiards) shots of different difficulty levels. Ten proficient and 10 less-skilled novus players performed 3 types of novus shots (penalties, cuts, rebounds) 10 times each. During each shot, elbow flexion and cue–forearm angles (using a movement analysis system), and surface EMG activity of the trapezius, posterior, and lateral deltoid muscles of each subject’s dominant side, were measured. Data were compared between more- and less-skilled players, and successful compared with unsuccessful shots. Elbow flexion angle among the more-skilled players was 24.5% larger (P < .001) during unsuccessful cut shots than successful ones. The more-skilled players performed successful penalty and rebound shots with 26.8% and 49.8% lower (P < .01 and P < .001, respectively) EMG activity of the trapezius muscle than unsuccessful ones. Less-skilled players’ shots were characterized by higher EMG activity in the trapezius muscle. The obtained findings suggest that the more-skilled novus players had acquired a different muscle recruitment pattern than less-skilled players.

scholarly journals Theraband applications for improved wall slide exercise

2021 ◽  
Author(s):  
Özgün Uysal ◽  
A. Sinan Akoğlu ◽  
Dilara Kara ◽  
A. Çağatay Sezik ◽  
Mahmut Çalık ◽  
...  
Keyword(s):  
Upper Extremity ◽  
Surface Emg ◽  
Emg Activity ◽  
Shoulder Abduction ◽  
Moderate Activity ◽  
Serratus Anterior ◽  
Shoulder Muscles ◽  
Lower Trapezius ◽  
University Laboratory ◽  
Low Activity

Context: The wall slide exercise is commonly used in clinic and research settings. Theraband positioning variations for hip exercises are investigated and used, but theraband positioning variations for upper extremity wall slide exercise, though not commonly used, are not investigated. Objective: To investigate the effect of different theraband positions (elbow and wrist) on scapular and shoulder muscles' activation in wall slide exercises and compare them to the regular wall slide exercise for the upper limbs. Study Design: Descriptive Laboratory Study. Setting: University Laboratory Patients or Other Participants: 20 participants with healthy shoulders Interventions: Participants performed regular and two different variations of wall slide exercises (theraband at wrist and theraband at elbow) in randomized order. Main Outcome Measures: Surface EMG activity of the trapezius muscles (upper [UT], middle [MT], and lower trapezius [LT]), infraspinatus (IS), middle deltoid (MD), and serratus anterior (SA). Results: Regular wall slide exercise elicited low activity in MD and moderate activity in SA muscles (32% MVIC), while theraband at wrist and elbow variations elicited low activity in MT, LT, IS, and MD muscles and moderate activity in SA muscles (46% and 34% MVICs, respectively). UT activation was absent to minimal (0–15% MVIC) in all wall slide exercise variations. Theraband at wrist produced lower UT/MT, UT/LT, and UT/SA levels. Conclusion: In shoulder rehabilitation, clinicians desiring to activate scapular stabilization muscles should consider using theraband at wrist variation; clinicians desiring to achieve more shoulder abduction activation and less scapular stabilization should consider theraband at elbow variation of upper extremity wall slide exercise.

Combining Values

2002 ◽  
Vol 7 (2) ◽  
pp. 1-4, 12 ◽  
Author(s):  
Christopher R. Brigham
Keyword(s):  
Lower Extremity ◽  
Upper Extremity ◽  
Evaluation Method ◽  
Proximal Phalanx ◽  
Common Error ◽  
The Third ◽  
Whole Person ◽  
Impairment Ratings ◽  
Upper Extremity Impairment ◽  
The Individual

Abstract To account for the effects of multiple impairments, evaluating physicians must provide a summary value that combines multiple impairments so the whole person impairment is equal to or less than the sum of all the individual impairment values. A common error is to add values that should be combined and typically results in an inflated rating. The Combined Values Chart in the AMA Guides to the Evaluation of Permanent Impairment, Fifth Edition, includes instructions that guide physicians about combining impairment ratings. For example, impairment values within a region generally are combined and converted to a whole person permanent impairment before combination with the results from other regions (exceptions include certain impairments of the spine and extremities). When they combine three or more values, physicians should select and combine the two lowest values; this value is combined with the third value to yield the total value. Upper extremity impairment ratings are combined based on the principle that a second and each succeeding impairment applies not to the whole unit (eg, whole finger) but only to the part that remains (eg, proximal phalanx). Physicians who combine lower extremity impairments usually use only one evaluation method, but, if more than one method is used, the physician should use the Combined Values Chart.

Impairment Tutorial: Functionally Limiting Upper Extremity Pain: Controversies in Impairment Rating

2003 ◽  
Vol 8 (5) ◽  
pp. 4-12
Author(s):  
Lorne Direnfeld ◽  
James Talmage ◽  
Christopher Brigham
Keyword(s):  
Upper Extremity ◽  
Radicular Pain ◽  
Illness Behavior ◽  
Orthopedic Surgeon ◽  
First Case ◽  
Clinical Presentations ◽  
Whole Person ◽  
Physical Examinations ◽  
Upper Extremity Impairment ◽  
The Individual

Abstract This article was prompted by the submission of two challenging cases that exemplify the decision processes involved in using the AMA Guides to the Evaluation of Permanent Impairment (AMA Guides). In both cases, the physical examinations were normal with no evidence of illness behavior, but, based on their histories and clinical presentations, the patients reported credible symptoms attributable to specific significant injuries. The dilemma for evaluators was whether to adhere to the AMA Guides, as written, or to attempt to rate impairment in these rare cases. In the first case, the evaluating neurologist used alternative approaches to define impairment based on the presence of thoracic outlet syndrome and upper extremity pain, as if there were a nerve injury. An orthopedic surgeon who evaluated the case did not base impairment on pain and used the upper extremity chapters in the AMA Guides. The impairment ratings determined using either the nervous system or upper extremity chapters of the AMA Guides resulted in almost the same rating (9% vs 8% upper extremity impairment), and either value converted to 5% whole person permanent impairment. In the second case, the neurologist evaluated the individual for neuropathic pain (9% WPI), and the orthopedic surgeon rated the patient as Diagnosis-related estimates Cervical Category II for nonverifiable radicular pain (5% to 8% WPI).

Spinal Impairment Evaluation: Fifth Edition Changes

2001 ◽  
Vol 6 (1) ◽  
pp. 1-3
Author(s):  
Robert H. Haralson
Keyword(s):  
Spinal Cord ◽  
Lower Extremity ◽  
Range Of Motion ◽  
Upper Extremity ◽  
Spinal Cord Injuries ◽  
Clinical Findings ◽  
Fourth Edition ◽  
Treatment Results ◽  
Standard Terminology ◽  
Made In

Abstract The AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), Fifth Edition, was published in November 2000 and contains major changes from its predecessor. In the Fourth Edition, all musculoskeletal evaluation and rating was described in a single chapter. In the Fifth Edition, this information has been divided into three separate chapters: Upper Extremity (13), Lower Extremity (14), and Spine (15). This article discusses changes in the spine chapter. The Models for rating spinal impairment now are called Methods. The AMA Guides, Fifth Edition, has reverted to standard terminology for spinal regions in the Diagnosis-related estimates (DRE) Method, and both it and the Range of Motion (ROM) Method now reference cervical, thoracic, and lumbar. Also, the language requiring the use of the DRE, rather than the ROM Method has been strengthened. The biggest change in the DRE Method is that evaluation should include the treatment results. Unfortunately, the Fourth Edition's philosophy regarding when and how to rate impairment using the DRE Model led to a number of problems, including the same rating of all patients with radiculopathy despite some true differences in outcomes. The term differentiator was abandoned and replaced with clinical findings. Significant changes were made in evaluation of patients with spinal cord injuries, and evaluators should become familiar with these and other changes in the Fifth Edition.

Sign in / Sign up

Export Citation Format

Share Document