scholarly journals Low-Frequency Fatigue as an Indicator of Eccentric Exercise-Induced Muscle Injury: The Role of Vitamin E

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Antonios Kyparos ◽  
Michalis G. Nikolaidis ◽  
Konstantina Dipla ◽  
Andreas Zafeiridis ◽  
Vassilis Paschalis ◽  
...  
Keyword(s):  
Vitamin E ◽  
Eccentric Exercise ◽  
Muscle Injury ◽  
Low Frequency ◽  
Low Frequency Fatigue ◽  
Exercise Induced

The cytoprotective role of taurine in exercise-induced muscle injury

Amino Acids ◽  
2002 ◽  
Vol 22 (4) ◽  
pp. 309-324 ◽  
Author(s):  
R. Dawson, Jr. ◽  
M. Biasetti ◽  
S. Messina ◽  
J. Dominy
Keyword(s):  
Muscle Injury ◽  
Exercise Induced

scholarly journals Low-Frequency Fatigue at Different Muscle Length Following Intermittent Eccentric Drop Jumps in 12—14 Year-Old Boys

2018 ◽  
Vol 3 (57) ◽  
Author(s):  
Vytautas Streckis ◽  
Giedrius Gorianovas ◽  
Birutė Miseckaitė ◽  
Valerija Streckienė ◽  
Ronaldas Endrijaitis ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Eccentric Exercise ◽  
Mechanical Damage ◽  
Low Frequency ◽  
Muscle Length ◽  
Contraction Force ◽  
Low Frequencies ◽  
Drop Jumps ◽  
Low Frequency Fatigue ◽  
Initial Force

Low frequency fatigue (LFF) in 12—14 year-old adolescent boys (n = 10) doing 75 eccentric jumps performed every20 s from a platform 80 cm high was investigated.Thus the aim of this study was to find out if LFF manifests itself in the muscles of boys aged 12—14 years doing 75 dropjumps performed every 20 s at angles of 90˚ and 135˚ from a platform 80 cm high. The results of the research have shownthat doing 75 eccentric jumps performed every 20 s calls forth LFF in the muscles of boys that is particularly strong anddisappears more slowly at a shorter length of the muscle exercised. Thus, the hypothesis as to the sarcomeric origin ofLFF in the muscles of boys and men has been confirmed. Besides, the muscles of men of mature age are more resistantto LFF than those of boys. This fact, as well as a more acute pain brought about in the muscles of boys, indicates thatthe muscles of boys are less resistant to mechanical damage than those of men of mature age.It is maintained that as a result of the eccentric exercise performed, some portion of the weak sarcomeres gets tornand then the strong sarcomeres, i.e. the ones that develop contraction force have to work at a shorter muscle length.When muscle contraction length is short the sensitiveness of miofibrillas to Ca 2+  decreases. It is rather unexpectedthough that 24 h after the end of the exercise the force developed by electrostimulation at low frequencies (20 Hz) issmaller (p < 0.05), as compared to the initial force registered at a shorter muscle length. Since after the exercise therewas also a decrease in the force developed at a shorter muscle length in particular, the sarcomeres are believed tohave been damaged during eccentric exercise.Keywords: electrical stimulation, force, age, muscle damage, stretch-shortening exercise.

Role of intracellular calcium and metabolites in low-frequency fatigue of mouse skeletal muscle

1997 ◽  
Vol 272 (2) ◽  
pp. C550-C559 ◽  
Author(s):  
E. R. Chin ◽  
C. D. Balnave ◽  
D. G. Allen
Keyword(s):  
Skeletal Muscle ◽  
Sarcoplasmic Reticulum ◽  
Low Frequency ◽  
Single Muscle ◽  
Low Frequencies ◽  
Time Integral ◽  
Metabolic Component ◽  
Dependent Component ◽  
Low Frequency Fatigue

We have examined the extent to which prolonged reductions in low-frequency force (i.e., low-frequency fatigue) result from increases in intracellular free Ca2+ concentration ([Ca2+]i) and alterations in muscle metabolites. Force and [Ca2+]i were measured in mammalian single muscle fibers in response to short, intermediate, and long series of tetani that elevated the [Ca2+]i-time integral to 5, 17, and 29 microM x s, respectively. Only the intermediate and long series resulted in prolonged (>60 x min) reductions in Ca2+ release and low-frequency fatigue. When fibers recovered from the long series of tetani without glucose, Ca2+ release was reduced to a greater extent and force was reduced at high and low frequencies. These findings indicate that the decrease in sarcoplasmic reticulum Ca2+ release associated with fatigue has at least two components: 1) a metabolic component, which, in the presence of glucose, recovers within 1 h, and 2) a component dependent on the elevation of the [Ca2+]i-time integral, which recovers more slowly. It is this Ca2+-dependent component that is primarily responsible for low-frequency fatigue.

Role of S100A12/RAGE axis in eccentric exercise-induced delayed-onset muscle soreness in male non-athletes

2015 ◽  
Vol 11 (3) ◽  
pp. 345-349 ◽  
Author(s):  
Hossein Khorramdelazad ◽  
Hadi Rohani ◽  
Abdollah Jafarzadeh ◽  
Mohammadreza Hajizadeh ◽  
Gholamhossein Hassanshahi
Keyword(s):  
Eccentric Exercise ◽  
Muscle Soreness ◽  
Delayed Onset Muscle Soreness ◽  
Delayed Onset ◽  
Exercise Induced

ECCENTRIC EXERCISE-INDUCED MUSCLE INJURY IN HUMANS 1121

1996 ◽  
Vol 28 (Supplement) ◽  
pp. 188 ◽  
Author(s):  
R. A. Fielding ◽  
T. Manfredi ◽  
A. Parzick ◽  
M. Fiatarone ◽  
W. Evans ◽  
...  
Keyword(s):  
Eccentric Exercise ◽  
Muscle Injury ◽  
Exercise Induced

Role of brain macrophages on IL-1β and fatigue following eccentric exercise-induced muscle damage

2010 ◽  
Vol 24 (4) ◽  
pp. 564-568 ◽  
Author(s):  
Martin D. Carmichael ◽  
J. Mark Davis ◽  
E. Angela Murphy ◽  
James A. Carson ◽  
N. Van Rooijen ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Eccentric Exercise ◽  
Brain Macrophages ◽  
Exercise Induced

scholarly journals MRI Quantitative Analysis of Eccentric Exercise-induced Skeletal Muscle Injury in Rats

2020 ◽  
Vol 27 (4) ◽  
pp. e72-e79 ◽  
Author(s):  
Congcong Fu ◽  
Yu Xia ◽  
Fan Meng ◽  
Fei Li ◽  
Qiang Liu ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Quantitative Analysis ◽  
Eccentric Exercise ◽  
Muscle Injury ◽  
Skeletal Muscle Injury ◽  
Exercise Induced
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