Age-related differences in muscle shear moduli in the lower extremity

Ryota Akagi, Yota Yamashita, Yuta Ueyasu

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


This study investigated the age-related differences in shear moduli of the rectus femoris muscle (RF), the lateral head of the gastrocnemius muscle (LG) and the soleus muscle (SOL) using shear wave ultrasound elastography. Thirty-one young individuals and 49 elderly individuals volunteered for this study. The shear modulus of RF was determined at 50% of the thigh length, and those of LG and SOL were determined at 30% of the lower leg length. RF and LG shear moduli were significantly higher in young individuals than in elderly individuals, but there was no age-related difference in SOL shear modulus. From the standpoint of an index reflecting muscle mechanical properties, it is suggested that the lower muscle shear moduli of RF and LG are the reason for the decreased explosive muscle strength in the lower extremity and the increased risk of falls for elderly individuals.

Original languageEnglish
Pages (from-to)2906-2912
Number of pages7
JournalUltrasound in Medicine and Biology
Issue number11
Publication statusPublished - 2015 Nov


  • Lateral head of gastrocnemius muscle
  • Rectus femoris muscle
  • Shear modulus
  • Shear wave ultrasound elastography
  • Soleus muscle

ASJC Scopus subject areas

  • Biophysics
  • Radiological and Ultrasound Technology
  • Acoustics and Ultrasonics


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