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Echo Intensity Versus Muscle Function Correlations in Older Adults are Influenced by Subcutaneous Fat Thickness.

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Title: Echo Intensity Versus Muscle Function Correlations in Older Adults are Influenced by Subcutaneous Fat Thickness.
Authors: Stock, Matt S.1, Burton, Adam M.1, Whitson, Morgan2, Dawson, Nicole T.3, Sobolewski, Eric J.4, Thompson, Brennan J.5
Source: Ultrasound in Medicine & Biology. Aug2018, Vol. 44 Issue 8, p1597-1605. 9p.
Subjects: Rectus femoris muscles, Ultrasonic imaging, Muscles, Skeletal muscle, Glycogen, Magnetic resonance imaging, Metabolic disorders, Myocardial infarction, Adipose tissues, Geriatric assessment, Aging, Comparative studies, Research methodology, Medical cooperation, Muscle strength, Research, Evaluation research
Abstract: Recently, an equation that allows investigators to correct echo intensity for subcutaneous fat was developed. We evaluated correlations between uncorrected and corrected echo intensity versus measures of lower-extremity function. Twenty-three older adults (11 men, 12 women; mean age = 72 y) participated. B-Mode ultrasonography was used to quantify rectus femoris echo intensity and subcutaneous fat thickness. Knee extensor isometric peak torque and rate of torque development at 200 ms (RTD200) were determined (joint angle = 90°). Fast gait speed was evaluated at 10- and 400-m distances. Partial correlations between normalized peak torque, RTD200 and 10- and 400-m gait speed versus uncorrected echo intensity were weak and insignificant. Correction for subcutaneous fat strengthened the correlations (peak torque r = -0.500, RTD200 r= -0.425, 10-m r = -0.409, 400-m r = -0.410). Correcting echo intensity values for subcutaneous fat strengthened the associations with lower-extremity muscle function in older adults. [ABSTRACT FROM AUTHOR]
Copyright of Ultrasound in Medicine & Biology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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PubType: Academic Journal
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  Data: Echo Intensity Versus Muscle Function Correlations in Older Adults are Influenced by Subcutaneous Fat Thickness.
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  Data: <searchLink fieldCode="JN" term="%22Ultrasound+in+Medicine+%26+Biology%22">Ultrasound in Medicine & Biology</searchLink>. Aug2018, Vol. 44 Issue 8, p1597-1605. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Rectus+femoris+muscles%22">Rectus femoris muscles</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+imaging%22">Ultrasonic imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Muscles%22">Muscles</searchLink><br /><searchLink fieldCode="DE" term="%22Skeletal+muscle%22">Skeletal muscle</searchLink><br /><searchLink fieldCode="DE" term="%22Glycogen%22">Glycogen</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+resonance+imaging%22">Magnetic resonance imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Metabolic+disorders%22">Metabolic disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Myocardial+infarction%22">Myocardial infarction</searchLink><br /><searchLink fieldCode="DE" term="%22Adipose+tissues%22">Adipose tissues</searchLink><br /><searchLink fieldCode="DE" term="%22Geriatric+assessment%22">Geriatric assessment</searchLink><br /><searchLink fieldCode="DE" term="%22Aging%22">Aging</searchLink><br /><searchLink fieldCode="DE" term="%22Comparative+studies%22">Comparative studies</searchLink><br /><searchLink fieldCode="DE" term="%22Research+methodology%22">Research methodology</searchLink><br /><searchLink fieldCode="DE" term="%22Medical+cooperation%22">Medical cooperation</searchLink><br /><searchLink fieldCode="DE" term="%22Muscle+strength%22">Muscle strength</searchLink><br /><searchLink fieldCode="DE" term="%22Research%22">Research</searchLink><br /><searchLink fieldCode="DE" term="%22Evaluation+research%22">Evaluation research</searchLink>
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  Data: Recently, an equation that allows investigators to correct echo intensity for subcutaneous fat was developed. We evaluated correlations between uncorrected and corrected echo intensity versus measures of lower-extremity function. Twenty-three older adults (11 men, 12 women; mean age = 72 y) participated. B-Mode ultrasonography was used to quantify rectus femoris echo intensity and subcutaneous fat thickness. Knee extensor isometric peak torque and rate of torque development at 200 ms (RTD200) were determined (joint angle = 90°). Fast gait speed was evaluated at 10- and 400-m distances. Partial correlations between normalized peak torque, RTD200 and 10- and 400-m gait speed versus uncorrected echo intensity were weak and insignificant. Correction for subcutaneous fat strengthened the correlations (peak torque r = -0.500, RTD200 r= -0.425, 10-m r = -0.409, 400-m r = -0.410). Correcting echo intensity values for subcutaneous fat strengthened the associations with lower-extremity muscle function in older adults. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Group: Ab
  Data: <i>Copyright of Ultrasound in Medicine & Biology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.ultrasmedbio.2018.04.009
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 1597
    Subjects:
      – SubjectFull: Rectus femoris muscles
        Type: general
      – SubjectFull: Ultrasonic imaging
        Type: general
      – SubjectFull: Muscles
        Type: general
      – SubjectFull: Skeletal muscle
        Type: general
      – SubjectFull: Glycogen
        Type: general
      – SubjectFull: Magnetic resonance imaging
        Type: general
      – SubjectFull: Metabolic disorders
        Type: general
      – SubjectFull: Myocardial infarction
        Type: general
      – SubjectFull: Adipose tissues
        Type: general
      – SubjectFull: Geriatric assessment
        Type: general
      – SubjectFull: Aging
        Type: general
      – SubjectFull: Comparative studies
        Type: general
      – SubjectFull: Research methodology
        Type: general
      – SubjectFull: Medical cooperation
        Type: general
      – SubjectFull: Muscle strength
        Type: general
      – SubjectFull: Research
        Type: general
      – SubjectFull: Evaluation research
        Type: general
    Titles:
      – TitleFull: Echo Intensity Versus Muscle Function Correlations in Older Adults are Influenced by Subcutaneous Fat Thickness.
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            NameFull: Stock, Matt S.
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            NameFull: Burton, Adam M.
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            NameFull: Dawson, Nicole T.
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            NameFull: Sobolewski, Eric J.
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              Text: Aug2018
              Type: published
              Y: 2018
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