A Study on the Effect of Complex Rehabilitation Exericise Methods through Short-Term Active Sling Exercises and Vibration Balls on the Upper Limb Muscle Activity of People with Myelopathy

2017 ◽  
Author(s):  
Juhwan Oh ◽  
TaeKyu Kwon
Keyword(s):  
Upper Limb ◽  
Muscle Activity ◽  
Limb Muscle ◽  
Short Term

Impact of posture and upper-limb muscle activity on grip strength

2018 ◽  
Vol 25 (4) ◽  
pp. 614-620 ◽  
Author(s):  
Rahul Jain ◽  
Makkhan Lal Meena ◽  
Manoj Kumar Sain ◽  
Govind Sharan Dangayach
Keyword(s):  
Grip Strength ◽  
Upper Limb ◽  
Muscle Activity ◽  
Limb Muscle

scholarly journals Rapid and flexible whole body postural responses are evoked from perturbations to the upper limb during goal-directed reaching

2017 ◽  
Vol 117 (3) ◽  
pp. 1070-1083 ◽  
Author(s):  
Catherine R. Lowrey ◽  
Joseph Y. Nashed ◽  
Stephen H. Scott
Keyword(s):  
Upper Limb ◽  
Lower Limb ◽  
Muscle Activity ◽  
Whole Body ◽  
Limb Muscle ◽  
Behavioral Context ◽  
Body Balance ◽  
Postural Responses ◽  
Muscle Responses ◽  
Behavioral Goal

An important aspect of motor control is the ability to perform tasks with the upper limbs while maintaining whole body balance. However, little is known about the coordination of upper limb voluntary and whole body postural control after mechanical disturbances that require both upper limb motor corrections to attain a behavioral goal and lower limb motor responses to maintain whole body balance. The present study identified the temporal organization of muscle responses and center of pressure (COP) changes following mechanical perturbations during reaching. Our results demonstrate that muscle responses in the upper limb are evoked first (∼50 ms), with lower limb muscle activity occurring immediately after, in as little as ∼60 ms after perturbation. Hand motion was immediately altered by the load, while COP changes occurred after ∼100 ms, when lower limb muscle activity was already present. Our secondary findings showed that both muscle activity and COP changes were influenced by behavioral context (by altering target shape, circle vs. rectangle). Voluntary and postural actions initially directed the hand toward the center of both target types, but after the perturbation upper limb and postural responses redirected the hand toward different spatial locations along the rectangle. Muscle activity was increased for both upper and lower limbs when correcting to the circle vs. the rectangle, and these differences emerged as early as the long-latency epoch (∼75–120 ms). Our results demonstrate that postural responses are rapidly and flexibly altered to consider the behavioral goal of the upper limb. NEW & NOTEWORTHY The present work establishes that, when reaching to a target while standing, perturbations applied to the upper limb elicit a rapid response in lower limb muscles. Unlike voluntary movements, postural responses do not occur before corrections of the upper limb. We show the first evidence that corrective postural adjustments are modulated by upper limb behavioral context (target shape). Importantly, this indicates that postural responses take into account upper limb feedback for online control.

Incorporating Ergonomics Evaluation in Assembly and Disassembly of Repetitive Task: Focusing on Load Task

2013 ◽  
Vol 712-715 ◽  
pp. 2879-2883 ◽  
Author(s):  
Siti Zawiah Md Dawal ◽  
Raja Ariffin Raja Ghazilla ◽  
Hilma Raimona Zadry ◽  
Mirta Widia ◽  
Nor Suliani Abdullah
Keyword(s):  
Upper Limb ◽  
Muscle Activity ◽  
Human Performance ◽  
Environmental Issues ◽  
Limb Muscle ◽  
Principle Solution ◽  
Low Load ◽  
Manual Tasks

Human performance seems to be neglected in the design of assembly and disassembly of a product despite the increasing awareness among people on green environmental issues. Incorporating an ergonomics evaluation can be considered as an alternative empirical solution to tackle the issue efficiently. Therefore, the objective of this study is to investigate human performance with reference to muscle activity while performing assembly and disassembly of manual tasks focusing on load variability. Upper limb muscle activities were investigated in this study. Twenty participants were asked to perform assembly and disassembly of selected tasks at two load-levels. The results of this study indicated that load tasks affect human performance. The findings from this study highlighted that the muscle activity for the medium load task was prone to fatigue faster than the low load task (28.19% in average). Thus the study has revealed the importance of incorporating the ergonomics principle solution in the design of assembly and disassembly tasks to increase human performance.

Impact of the racket type on the upper limb muscle activity during badminton smash

2021 ◽  
pp. 90-93
Author(s):  
S. Nolasco ◽  
A. Cavaleiro ◽  
M.A. Castro ◽  
L. Roseiro ◽  
A.M. Amaro
Keyword(s):  
Upper Limb ◽  
Muscle Activity ◽  
Limb Muscle

Warm-up with Weighted Bat and Adjustment of Upper Limb Muscle Activity in Bat Swinging under Movement Correction Conditions

2014 ◽  
Vol 118 (1) ◽  
pp. 96-113 ◽  
Author(s):  
Yoichi Ohta ◽  
Yasumitsu Ishii ◽  
Sachi Ikudome ◽  
Hiroki Nakamoto
Keyword(s):  
Upper Limb ◽  
Muscle Activity ◽  
Limb Muscle ◽  
Warm Up ◽  
Movement Correction

A preliminary investigation of upper limb muscle activity during simulated Canadian forest harvesting operations

Work ◽  
2011 ◽  
Vol 39 (4) ◽  
pp. 491-498 ◽  
Author(s):  
Usha Kuruganti ◽  
Tiernan P. Murphy ◽  
Gregory T. Dickinson
Keyword(s):  
Upper Limb ◽  
Muscle Activity ◽  
Preliminary Investigation ◽  
Forest Harvesting ◽  
Limb Muscle
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