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Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
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Related Experiment Video

Updated: Oct 16, 2025

Author Spotlight: Assessing Surgical Frailty with Point-of-Care Ultrasound of Quadriceps Muscles
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Quantitative Ultrasound Changes in Echotexture and Functional Parameters after a Multicomponent Training Program in

Sergio López-López1, Helios Pareja-Galeano2, Jaime Almazán-Polo1

  • 1Faculty of Sport Sciences, Universidad Europea de Madrid, 28770 Madrid, Spain.

Healthcare (Basel, Switzerland)
|October 23, 2021
PubMed
Summary

Multicomponent training improved muscle power and reduced rectus femoris echointensity in pre-frailty individuals. This 12-week program demonstrated significant benefits for muscle function and structure in older adults.

Keywords:
agingexercisefrailtyimage analysismulticomponent interventionultrasound imaging

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Area of Science:

  • Gerontology and Exercise Science
  • Musculoskeletal Ultrasound Imaging
  • Rehabilitation Medicine

Background:

  • Aging is associated with structural and textural muscle changes, impacting function.
  • Ultrasound imaging (USI) is a feasible method for assessing muscle characteristics.
  • Pre-frailty presents an opportunity for intervention to mitigate age-related decline.

Purpose of the Study:

  • To evaluate sonographic changes in muscle structure and function after a 12-week multicomponent training program.
  • To assess the impact of training on rectus femoris echointensity and vastus lateralis pennation angle.
  • To determine changes in muscle power and strength using the force-velocity (F-V) profile.

Main Methods:

  • Prospective, randomized clinical trial with 32 pre-frailty participants.
  • Intervention group: 12-week multicomponent training program (n=16).
  • Control group: conventional care (n=14).
  • Outcome measures: USI (echointensity, echovariation, pennation angle) and F-V profile for muscle power/strength.

Main Results:

  • Significant decrease in left rectus femoris echointensity (RF-EI) in the multicomponent group (p < 0.05).
  • Significant increase in muscle power in the multicomponent group compared to controls (p < 0.05).
  • No significant changes reported for other structural parameters like CSA or pennation angle.

Conclusions:

  • A 12-week multicomponent training program effectively reduced rectus femoris echointensity in pre-frailty elderly subjects.
  • The training program led to a significant improvement in muscle power in this population.
  • USI can detect beneficial structural and functional adaptations to exercise in pre-frail individuals.