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Psychometric Properties of Lower Extremity Strength Measurements Recorded in Community Settings in Independent Living Older Adults.

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Title: Psychometric Properties of Lower Extremity Strength Measurements Recorded in Community Settings in Independent Living Older Adults.
Authors: Alqahtani, Bader A., Sparto, Patrick J., Whitney, Susan L., Greenspan, Susan L., Perera, Subashan, Brach, Jennifer S.
Source: Experimental Aging Research. May/Jun2019, Vol. 45 Issue 3, p282-292. 11p. 1 Color Photograph, 4 Charts.
Subjects: Biophysics, Muscle strength, Psychometrics, Research evaluation, Scientific apparatus & instruments, Statistics, Data analysis, Statistical reliability, Independent living, Intraclass correlation
Abstract: Background: A uniaxial load cell device provides an alternative, easy and inexpensive way to quantify muscle strength in different settings outside the clinic and research labs. So, the purpose of the study was to examine the test–retest reliability and the construct validity of lower extremity strength performance using an uniaxial load cell device. Methods: A total of 131 subjects (85% female, mean age 80 ± 8 years) were included for the validity aim, and a sample of 38 subjects were enrolled in the reliability testing (89% female, mean age 76 ± 7 years). For the strength measurements were assessed with a portable load cell for three consecutive trials. Test–retest reliability was assessed over two testing visits occurring one week apart. Spearman's rank correlation coefficient was used to test convergent validity with other mobility-related measurements construct validity at baseline. Results: Strength measurements showed good to excellent reliability in most of the measured parameters with intraclass correlation coefficients range from 0.89 to 0.99 and were correlated with mobility measurements with Spearman rho range from 0.21 to 0.38. Conclusion: The portable uni-axial load cell to measure lower extremity strength provides reliable measurements in community settings. [ABSTRACT FROM AUTHOR]
Copyright of Experimental Aging Research is the property of Taylor & Francis Ltd 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: Psychology and Behavioral Sciences Collection
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  Data: Psychometric Properties of Lower Extremity Strength Measurements Recorded in Community Settings in Independent Living Older Adults.
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  Data: <searchLink fieldCode="AR" term="%22Alqahtani%2C+Bader+A%2E%22">Alqahtani, Bader A.</searchLink><br /><searchLink fieldCode="AR" term="%22Sparto%2C+Patrick+J%2E%22">Sparto, Patrick J.</searchLink><br /><searchLink fieldCode="AR" term="%22Whitney%2C+Susan+L%2E%22">Whitney, Susan L.</searchLink><br /><searchLink fieldCode="AR" term="%22Greenspan%2C+Susan+L%2E%22">Greenspan, Susan L.</searchLink><br /><searchLink fieldCode="AR" term="%22Perera%2C+Subashan%22">Perera, Subashan</searchLink><br /><searchLink fieldCode="AR" term="%22Brach%2C+Jennifer+S%2E%22">Brach, Jennifer S.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Experimental+Aging+Research%22">Experimental Aging Research</searchLink>. May/Jun2019, Vol. 45 Issue 3, p282-292. 11p. 1 Color Photograph, 4 Charts.
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  Data: <searchLink fieldCode="DE" term="%22Biophysics%22">Biophysics</searchLink><br /><searchLink fieldCode="DE" term="%22Muscle+strength%22">Muscle strength</searchLink><br /><searchLink fieldCode="DE" term="%22Psychometrics%22">Psychometrics</searchLink><br /><searchLink fieldCode="DE" term="%22Research+evaluation%22">Research evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Scientific+apparatus+%26+instruments%22">Scientific apparatus & instruments</searchLink><br /><searchLink fieldCode="DE" term="%22Statistics%22">Statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Data+analysis%22">Data analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Statistical+reliability%22">Statistical reliability</searchLink><br /><searchLink fieldCode="DE" term="%22Independent+living%22">Independent living</searchLink><br /><searchLink fieldCode="DE" term="%22Intraclass+correlation%22">Intraclass correlation</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Background: A uniaxial load cell device provides an alternative, easy and inexpensive way to quantify muscle strength in different settings outside the clinic and research labs. So, the purpose of the study was to examine the test–retest reliability and the construct validity of lower extremity strength performance using an uniaxial load cell device. Methods: A total of 131 subjects (85% female, mean age 80 ± 8 years) were included for the validity aim, and a sample of 38 subjects were enrolled in the reliability testing (89% female, mean age 76 ± 7 years). For the strength measurements were assessed with a portable load cell for three consecutive trials. Test–retest reliability was assessed over two testing visits occurring one week apart. Spearman's rank correlation coefficient was used to test convergent validity with other mobility-related measurements construct validity at baseline. Results: Strength measurements showed good to excellent reliability in most of the measured parameters with intraclass correlation coefficients range from 0.89 to 0.99 and were correlated with mobility measurements with Spearman rho range from 0.21 to 0.38. Conclusion: The portable uni-axial load cell to measure lower extremity strength provides reliable measurements in community settings. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Experimental Aging Research is the property of Taylor & Francis Ltd 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: 10.1080/0361073X.2019.1609145
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 282
    Subjects:
      – SubjectFull: Biophysics
        Type: general
      – SubjectFull: Muscle strength
        Type: general
      – SubjectFull: Psychometrics
        Type: general
      – SubjectFull: Research evaluation
        Type: general
      – SubjectFull: Scientific apparatus & instruments
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      – SubjectFull: Statistics
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      – SubjectFull: Data analysis
        Type: general
      – SubjectFull: Statistical reliability
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      – SubjectFull: Independent living
        Type: general
      – SubjectFull: Intraclass correlation
        Type: general
    Titles:
      – TitleFull: Psychometric Properties of Lower Extremity Strength Measurements Recorded in Community Settings in Independent Living Older Adults.
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              M: 05
              Text: May/Jun2019
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              Y: 2019
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              Value: 45
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