Influence of Prosthetic Weight on Muscle Fatigue in Upper Limb Amputees

2019 ◽  
Author(s):  
Yue Zheng ◽  
Xiangxin Li ◽  
Lan Tian ◽  
Guanglin Li
Keyword(s):  
Muscle Fatigue ◽  
Upper Limb

scholarly journals Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise

2020 ◽  
Vol 11 ◽  
Author(s):  
Lei Lu ◽  
Mark Robinson ◽  
Ying Tan ◽  
Kusal Goonewardena ◽  
Xinliang Guo ◽  
...  
Keyword(s):  
Physical Exercise ◽  
Muscle Fatigue ◽  
Short Duration ◽  
Upper Limb ◽  
Limb Muscle

scholarly journals Upper limb muscle fatigue during prolonged Boccia games with underarm throwing technique

2012 ◽  
Vol 11 (4) ◽  
pp. 441-451 ◽  
Author(s):  
Daniel Tik-Pui Fong ◽  
Kit-Yee Yam ◽  
Vikki Wing-Shan Chu ◽  
Roy Tsz-Hei Cheung ◽  
Kai-Ming Chan
Keyword(s):  
Muscle Fatigue ◽  
Upper Limb ◽  
Limb Muscle

scholarly journals Adaptive robot mediated upper limb training using electromyogram-based muscle fatigue indicators

PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0233545
Author(s):  
Azeemsha Thacham Poyil ◽  
Volker Steuber ◽  
Farshid Amirabdollahian
Keyword(s):  
Muscle Fatigue ◽  
Upper Limb

Comparison of neuromuscular adjustments associated with sustained isometric contractions of four different muscle groups

2013 ◽  
Vol 114 (10) ◽  
pp. 1426-1434 ◽  
Author(s):  
Daria Neyroud ◽  
Jennifer Rüttimann ◽  
Anne F. Mannion ◽  
Guillaume Y. Millet ◽  
Nicola A. Maffiuletti ◽  
...  
Keyword(s):  
Muscle Fatigue ◽  
Upper Limb ◽  
Voluntary Contraction ◽  
Voluntary Activation ◽  
Knee Extensors ◽  
Elbow Flexors ◽  
Plantar Flexors ◽  
Task Failure ◽  
Before And After ◽  
Muscle Groups

The extent and characteristics of muscle fatigue of different muscle groups when subjected to a similar fatiguing task may differ. Thirteen healthy young men performed sustained contractions at 50% maximal voluntary contraction (MVC) force until task failure, with four different muscle groups, over two sessions. Per session, one upper limb and one lower limb muscle group were tested (knee extensors and thumb adductor, or plantar and elbow flexors). Changes in voluntary activation level and contractile properties were derived from doublet responses evoked during and after MVCs before and after exercise. Time to task failure differed ( P < 0.05) between muscle groups (220 ± 64 s for plantar flexors, 114 ± 27 s for thumb adductor, 77 ± 25 s for knee extensors, and 72 ± 14 s for elbow flexors). MVC force loss immediately after voluntary task failure was similar (−30 ± 11% for plantar flexors, −37 ± 13% for thumb adductor, −34 ± 15% for knee extensors, and −40 ± 12% for elbow flexors, P > 0.05). Voluntary activation was decreased for plantar flexors only (from 95 ± 5% to 82 ± 9%, P < 0.05). Potentiated evoked doublet amplitude was more depressed for upper limb muscles (−59.3 ± 14.7% for elbow flexors and −60.1 ± 24.1% for thumb adductor, P < 0.05) than for knee extensors (−28 ± 15%, P < 0.05); no reduction was found in plantar flexors (−7 ± 12%, P > 0.05). In conclusion, despite different times to task failure when sustaining an isometric contraction at 50% MVC force for as long as possible, diverse muscle groups present similar loss of MVC force after task failure. Thus the extent of muscle fatigue is not affected by time to task failure, whereas this latter determines the etiology of fatigue.

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