How to evaluate skeletal muscle function: suggestion from studies on skeletal muscle fatigue

2022 ◽  
Vol 157 (1) ◽  
pp. 9-14
Author(s):  
Daiki Watanabe ◽  
Keita Kanzaki ◽  
Masanobu Wada
Keyword(s):  
Skeletal Muscle ◽  
Muscle Fatigue ◽  
Muscle Function ◽  
Skeletal Muscle Function ◽  
Skeletal Muscle Fatigue

scholarly journals Fourteen days of smoking cessation improves muscle fatigue resistance and reverses markers of systemic inflammation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Z. Darabseh ◽  
Thomas M. Maden-Wilkinson ◽  
George Welbourne ◽  
Rob C. I. Wüst ◽  
Nessar Ahmed ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Skeletal Muscle ◽  
Smoking Cessation ◽  
Muscle Fatigue ◽  
Fatigue Resistance ◽  
Systemic Inflammation ◽  
Muscle Function ◽  
Low Grade ◽  
Skeletal Muscle Function ◽  
Tnf Α

AbstractCigarette smoking has a negative effect on respiratory and skeletal muscle function and is a risk factor for various chronic diseases. To assess the effects of 14 days of smoking cessation on respiratory and skeletal muscle function, markers of inflammation and oxidative stress in humans. Spirometry, skeletal muscle function, circulating carboxyhaemoglobin levels, advanced glycation end products (AGEs), markers of oxidative stress and serum cytokines were measured in 38 non-smokers, and in 48 cigarette smokers at baseline and after 14 days of smoking cessation. Peak expiratory flow (p = 0.004) and forced expiratory volume in 1 s/forced vital capacity (p = 0.037) were lower in smokers compared to non-smokers but did not change significantly after smoking cessation. Smoking cessation increased skeletal muscle fatigue resistance (p < 0.001). Haemoglobin content, haematocrit, carboxyhaemoglobin, total AGEs, malondialdehyde, TNF-α, IL-2, IL-4, IL-6 and IL-10 (p < 0.05) levels were higher, and total antioxidant status (TAS), IL-12p70 and eosinophil numbers were lower (p < 0.05) in smokers. IL-4, IL-6, IL-10 and IL-12p70 had returned towards levels seen in non-smokers after 14 days smoking cessation (p < 0.05), and IL-2 and TNF-α showed a similar pattern but had not yet fully returned to levels seen in non-smokers. Haemoglobin, haematocrit, eosinophil count, AGEs, MDA and TAS did not significantly change with smoking cessation. Two weeks of smoking cessation was accompanied with an improved muscle fatigue resistance and a reduction in low-grade systemic inflammation in smokers.

Muscle Fatigue: Lactic Acid or Inorganic Phosphate the Major Cause?

Physiology ◽  
2002 ◽  
Vol 17 (1) ◽  
pp. 17-21 ◽  
Author(s):  
Håkan Westerblad ◽  
David G. Allen ◽  
Jan Lännergren
Keyword(s):  
Skeletal Muscle ◽  
Lactic Acid ◽  
Muscle Fatigue ◽  
Muscle Function ◽  
Inorganic Phosphate ◽  
Creatine Phosphate ◽  
Intracellular Acidosis ◽  
Skeletal Muscle Fatigue ◽  
Mammalian Muscle ◽  
Acid Accumulation

Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Recent studies on mammalian muscle, however, show little direct effect of acidosis on muscle function at physiological temperatures. Instead, inorganic phosphate, which increases during fatigue due to breakdown of creatine phosphate, appears to be a major cause of muscle fatigue.

scholarly journals Gait disturbances and muscle dysfunction in fibroblast growth factor 2 knockout mice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
C. Homer-Bouthiette ◽  
L. Xiao ◽  
Marja M. Hurley
Keyword(s):  
Skeletal Muscle ◽  
Growth Factor ◽  
Muscle Strength ◽  
Fibroblast Growth Factor ◽  
Muscle Function ◽  
Fibroblast Growth Factor 2 ◽  
Fibroblast Growth ◽  
Skeletal Muscle Function ◽  
Age Related ◽  
Gait Disturbances

AbstractFibroblast growth factor 2 (FGF2) is important in musculoskeletal homeostasis, therefore the impact of reduction or Fgf2 knockout on skeletal muscle function and phenotype was determined. Gait analysis as well as muscle strength testing in young and old WT and Fgf2KO demonstrated age-related gait disturbances and reduction in muscle strength that were exacerbated in the KO condition. Fgf2 mRNA and protein were significantly decreased in skeletal muscle of old WT compared with young WT. Muscle fiber cross-sectional area was significantly reduced with increased fibrosis and inflammatory infiltrates in old WT and Fgf2KO vs. young WT. Inflammatory cells were further significantly increased in old Fgf2KO compared with old WT. Lipid-related genes and intramuscular fat was increased in old WT and old Fgf2KO with a further increase in fibro-adipocytes in old Fgf2KO compared with old WT. Impaired FGF signaling including Increased β-Klotho, Fgf21 mRNA, FGF21 protein, phosphorylated FGF receptors 1 and 3, was observed in old WT and old Fgf2KO. MAPK/ ERK1/2 was significantly increased in young and old Fgf2KO. We conclude that Fgf2KO, age-related decreased FGF2 in WT mice, and increased FGF21 in the setting of impaired Fgf2 expression likely contribute to impaired skeletal muscle function and sarcopenia in mice.

Skeletal muscle fatigue does not affect shooting accuracy of handball players

2019 ◽  
Vol 27 (4) ◽  
pp. 253-259
Author(s):  
Beyza Akyüz ◽  
Pınar Arpınar Avşar ◽  
Murat Bilge ◽  
Gökhan Deliceoğlu ◽  
Feza Korkusuz
Keyword(s):  
Skeletal Muscle ◽  
Muscle Fatigue ◽  
Skeletal Muscle Fatigue

Beneficial effects of citrulline malate on skeletal muscle function in endotoxemic rat

2009 ◽  
Vol 602 (1) ◽  
pp. 143-147 ◽  
Author(s):  
Benoît Giannesini ◽  
Marguerite Izquierdo ◽  
Yann Le Fur ◽  
Patrick J. Cozzone ◽  
Marc Verleye ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Muscle Function ◽  
Skeletal Muscle Function ◽  
Beneficial Effects ◽  
Citrulline Malate

Skeletal Muscle Function Is Dependent Upon BRCA1 to Maintain Genomic Stability

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Michael D. Tarpey ◽  
Adam J. Amorese ◽  
Elizabeth R. LaFave ◽  
Everett C. Minchew ◽  
Kelsey H. Fisher-Wellman ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Muscle Function ◽  
Genomic Stability ◽  
Skeletal Muscle Function
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