Rectus Femoris Echo Intensity Correlates With Muscle Strength, But Not Endurance, In Younger And Older Men

Keywords

Dynapenia; Maximal voluntary contraction; Muscle quality; Quadriceps femoris; Ultrasonography

Abstract

We examined correlations between echo intensity and muscle strength and endurance. Rectus femoris echo intensity, maximal voluntary contraction (MVC) force and time to task failure during a 50% MVC task were determined for 12 younger (mean age = 25 y) and 13 older (mean age = 74 y) men. Bivariate correlations between echo intensity and normalized MVC force were similar for younger and older men, but was only statistically significant for the latter (younger r = −0.559, p = 0.059; older r = −0.580, p = 0.038). When all patients were combined, the correlation was significant (r = −0.733, p < 0.001). Significant correlations were not observed for time to task failure (younger r = −0.382, p = 0.221; older r = −0.347, p = 0.246; all patients r = −0.229, p = 0.270). Rectus femoris echo intensity is associated with muscle strength, but not endurance, in younger and older men.

Publication Date

8-1-2017

Publication Title

Ultrasound in Medicine and Biology

Volume

43

Issue

8

Number of Pages

1651-1657

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ultrasmedbio.2017.04.010

Socpus ID

85019935962 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85019935962

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