Publications by authors named "Weixin Deng"

Article Synopsis
  • * Results showed that greater neck flexion leads to increased muscle stiffness, and relaxed upper back positions have higher stiffness compared to an upright posture.
  • * The non-dominant side trapezius muscles were found to be stiffer than those on the dominant side, suggesting that poor posture can lead to tension and discomfort in the neck and shoulders.
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This study investigated the acute effects of PNF stretching on hamstring flexibility and muscle stiffness of lower limbs between genders. 15 male and 15 female university students without any injury histories on lower limbs in the past 3 months were included in this study were selected. All subjects were measured by MyotonPRO before and after stretching to determine the muscle stiffness of the biceps femoris muscle (BF), semitendinosus muscle (ST) of the hamstring and the medial gastrocnemius muscles (MG), lateral gastrocnemius muscles (LG), and the soleus (SOL) of the triceps surae muscles.

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Article Synopsis
  • * The study used shear wave elastography to measure the stiffness of the medial gastrocnemius, lateral gastrocnemius, and soleus muscles during isometric plantar flexion at knee angles of 0 and 90 degrees in 22 female participants.
  • * Results showed that stiffness correlated positively with contraction intensity, with variations in stiffness observed between the muscles based on knee angles, highlighting implications for understanding muscle injuries during physical activity.
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  • A study investigated how different hip positions affect muscle recruitment in the quadriceps during knee extension exercises in healthy females, focusing on the rectus femoris and three vastus muscles.
  • Twenty participants performed knee extensions at various resistance levels and hip angles, with muscle stiffness evaluated using ultrasound technology.
  • Results showed that hip position significantly influenced muscle stiffness and recruitment patterns, particularly between different resistance levels, with a strong correlation found between muscle stiffness and resistance level.
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Background: The upper limb neurodynamic test 1 (ULNT1) consists of a series of movements that are thought to detect an increase in neuromechanical sensitivity. In vivo, no trail was made to quantify the association between the nerve elasticity and different limb postures during ULNT1.

Objectives: (1) To investigate the relationship between nerve elasticity and limb postures during ULNT1 and (2) to investigate the intra- and interoperator reliabilities of shear wave elastography (SWE) in quantifying the elasticity of median nerve.

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Knee osteoarthritis is a disease with the degeneration of articular cartilage as its main feature. Cartilage thickness cannot become a single index to evaluate cartilage degeneration, so it is essential to also evaluate the stiffness. The purposes were as follows: (1) to examine test-retest reliabilities of the elastic modulus measurement in distal femoral articular cartilage (FAC) and compare the changes in specific-regional of distal FAC, (2) to explore the difference in distal FAC stiffness and thickness between the dominant and nondominant sides, and (3) to examine the correlation between the elastic properties of cartilage and the thickness of cartilage.

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This study is aimed to use shear wave elastography (SWE) to study the relationship between shear modulus and different body postures of the thoracolumbar fascia (TLF) and acquire physiologically meaningful information from the stiffness-posture graph to better quantify passive flexion responses. Seven passive postures were defined to evaluate the shear modulus of right side TLF at the third and fourth lumbar vertebra levels (L3 and L4) in twenty healthy male subjects. The TLF stiffness was significantly different among different postures (p < 0.

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Lysozyme acts as a non-specific innate-immunity molecule against the invasion of bacteria pathogens. A leukocyte cDNA library of orange-spotted grouper Epinephelus coioides was constructed and the goose-type (g-type) lysozyme cDNA was isolated. The complete cDNA consists of an open reading frame of 585 bp encoding a protein of 194 amino acids.

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