Evaluation of Compensatory Movement by Shoulder Joint Torque during Gain Adjustment of a Powered Prosthetic Wrist Joint

2018 ◽  
Author(s):  
Akira Kato ◽  
Haruno Nagumo ◽  
Miyake Tamon ◽  
Masakatsu G. Fujie ◽  
Shigeki Sugano
Keyword(s):  
Shoulder Joint ◽  
Wrist Joint ◽  
Joint Torque ◽  
Compensatory Movement ◽  
Gain Adjustment

Biomechanical Model of the Press Handstand in Gymnastics

1988 ◽  
Vol 4 (4) ◽  
pp. 326-341 ◽  
Author(s):  
Spiros G. Prassas
Keyword(s):  
Shoulder Joint ◽  
Joint Angle ◽  
Wrist Joint ◽  
Center Of Mass ◽  
Biomechanical Model ◽  
Joint Torque ◽  
Joint Torques ◽  
Skilled Performance ◽  
The Press ◽  
Line Passing

A biomechanical model of the press handstand was developed to evaluate and predict the shoulder joint torque requirements as well as the motion of a gymnast’s center of mass (CM) from an initial to a final (handstand) position. Five press handstands executed by gymnasts of differing abilities were filmed and analyzed. The results were compared to the predicted parameters of simulated presses. It was found that execution of the skill with fewer fluctuations in trunk and lower extremities angular velocity—a characteristic of skilled performance—required smoother and at times larger shoulder joint torques. Reduction of the hip joint angle by only 5 or 10° did not substantially reduce the shoulder joint torque requirements. Regarding CM motion, it was found that during performance the CM continuously elevated and remained close to a vertical line passing through the center of the wrist joint. All gymnasts, however, were found to be leaning slightly backward during the first part of the movement and slightly forward during the later phases. Modifications in wrist joint angle required to maintain each gymnast’s CM precisely above the center of the wrist joint were investigated.

scholarly journals Modifiability of abnormal isometric elbow and shoulder joint torque coupling after stroke

2005 ◽  
Vol 32 (2) ◽  
pp. 170-178 ◽  
Author(s):  
Michael D. Ellis ◽  
Bradley G. Holubar ◽  
Ana Maria Acosta ◽  
Randall F. Beer ◽  
Julius P. A. Dewald
Keyword(s):  
Shoulder Joint ◽  
Joint Torque

scholarly journals JOINTS ACTIVITY AND ITS ROLE IN THE UPPER EXTREMITY IN BADMINTON STROKES: A BIOMECHANICAL PERSPECTIVE OF SPORTS EDUCATION

2020 ◽  
Vol 8 (4) ◽  
pp. 522-529
Author(s):  
Mottakin Ahmed ◽  
G. D. Ghai
Keyword(s):  
Upper Extremity ◽  
Muscle Activity ◽  
Shoulder Joint ◽  
Elbow Joint ◽  
High Performance ◽  
Joint Angle ◽  
Wrist Joint ◽  
Video Camera ◽  
Total N ◽  
Practice Group

Purpose of the Study: This study aims to describe the muscle activity and its role in the upper extremity in Badminton Strokes and also investigates the Kinematics differences of Badminton forehand overhead shot, i.e., precise, smash and drop in wrist joint, elbow joint, and shoulder Joint from a biomechanics perspective. Methodology: Total [n=10] numbers of male badminton players were randomly selected from the badminton match practice group of L.N.I.P.E. Gwalior, Madhya Pradesh, India. The match practice group consisted of (n=78) players who at least participated in Inter-University badminton competition, and their age ranges from 17-25 years of old. Go Pro HERO 7, 2D camera was used. A video camera was mounted on a tripod at a height of 1.05 meters from the ground. 2D data of wrist joint, elbow joint, and shoulder joint were put in Kinovea 0.8.27 software. One way ANOVA was used. Principal Findings: The results of the finding demonstrate that Brain vibrations, paradoxically, are critical to the stability of movement and high performance. There are significant muscle activity and kinematics differences among forehand clear, forehand smash and forehand drop-in shoulder joint angle, elbow joint angle, and wrist joint angle. Applications of this Study: The Study may use by the badminton Players as well as coaches for the successful execution of badminton Skill. This study will provide the mechanical area of movement of badminton Players. The same kind of study may use in other games. Novelty/Originality of this Study: The Study explores the mechanical advantages of badminton forehand overhead Skill. It will give the reader new ideas to think of a similar kind of study in different games.

Learning to Control Orientation and Force in a Hammering Task

2012 ◽  
Vol 220 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Carlijn A. Vernooij ◽  
Leonora J. Mouton ◽  
Raoul M. Bongers
Keyword(s):  
Shoulder Joint ◽  
Joint Angle ◽  
Wrist Joint ◽  
Force Plate ◽  
Stone Tools ◽  
Human Cognition ◽  
Joint Angles ◽  
Force Vector ◽  
Initial Learning ◽  
Control Orientation

The ability to create stone tools is considered an important step in the emergence of human cognition. To further our understanding of these evolutionary processes we focused on the initial learning processes with which this percussive skill may be acquired. We studied a hammering task in which participants had to create a ground force vector by hitting a target on a force plate with a hammerstone. The produced ground force vector was presented as an arrow on a computer screen and had to end in a displayed target. The target could vary in its angle of azimuth and inclination. Over 5 days, three of the five participants adapted a wrist joint angle and two of these three participants adapted a shoulder joint angle that affected only angle of inclination of the ground force vector. Length and angle of azimuth of the ground force vector were not affected. In learning to control a hammering task, the first parameter to be manipulated seems to be the angle of inclination by adjusting the wrist and shoulder joint angles. This suggests that in the initial stages of learning a hammering task only one parameter is adapted.

scholarly journals 2E2-6 Analysis of Joint Torque in Inner/Outer Rotation and Ad-/Abduction of CPM Device for Shoulder Joint

2008 ◽  
Vol 2008 (0) ◽  
pp. 229-232
Author(s):  
Shouta MIYAGUCHI ◽  
Kousei NOJIRI ◽  
Nobutomo MATSUNAGA ◽  
Shigeyasu KAWAJI
Keyword(s):  
Shoulder Joint ◽  
Joint Torque

Effects of Upper Trunk Rotation on Shoulder Joint Torque among Baseball Pitchers of Various Levels

2007 ◽  
Vol 23 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Arnel L. Aguinaldo ◽  
Janet Buttermore ◽  
Henry Chambers
Keyword(s):  
High School ◽  
Motion Analysis ◽  
Overuse Injury ◽  
Shoulder Joint ◽  
Specific Pattern ◽  
Joint Torque ◽  
Overuse Injuries ◽  
Trunk Rotation ◽  
Joint Loading ◽  
Improve Performance

High rotational torques during baseball pitching are believed to be linked to most overuse injuries at the shoulder. This study investigated the effects of trunk rotation on shoulder rotational torques during pitching. A total of 38 pitchers from the professional, college, high school, and youth ranks were recruited for motion analysis. Professional pitchers demonstrated the least amount of rotational torque (p= .001) among skeletally mature players, while exhibiting the ability to rotate their trunks significantly later in the pitching cycle, as compared to other groups (p= .01). It was concluded that the timing of their rotation was optimized as to allow the throwing shoulder to move with decreased joint loading by conserving the momentum generated by the trunk. These results suggest that a specific pattern in throwing can be utilized to increase the efficiency of the pitch, which would allow a player to improve performance with decreased risk of overuse injury.

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