Reliability and validity of a standardized ultrasound examination protocol to quantify vastus lateralis muscle
Objective: To evaluate the reliability and validity of a standardized ultrasound examination protocol for measuring vastus lateralis muscle size. Design: Prospective cohort study. Subjects: Sixteen staff members of the university hospital of Heidelberg. Methods: Muscle thickness, cross-sectional are...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
Jun 14, 2021
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| In: |
Journal of rehabilitation medicine
Year: 2021, Volume: 53, Issue: 7, Pages: 1-7 |
| ISSN: | 1651-2081 |
| DOI: | 10.2340/16501977-2854 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.2340/16501977-2854 Verlag, lizenzpflichtig, Volltext: https://www.medicaljournals.se/jrm/content/abstract/10.2340/16501977-2854 
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| Author Notes: | Theresa Maria Betz, MD, Michaela Wehrstein, MSc, Fabian Preisner,MD, Martin Bendszus, MD and Birgit Friedmann-Bette, MD |
| Summary: | Objective: To evaluate the reliability and validity of a standardized ultrasound examination protocol for measuring vastus lateralis muscle size. Design: Prospective cohort study. Subjects: Sixteen staff members of the university hospital of Heidelberg. Methods: Muscle thickness, cross-sectional area and subcutaneous adipose tissue thickness were measured at 3 standardized sites on the right and left vastus lateralis muscle. Ultrasound measurements were collected by 2 independent investigators on 2 different days and compared with magnetic resonance imaging measurements. Results: Intraclass correlation coefficients (ICC) for intra-and inter-rater reliability showed very good closeness of agreement for all parameters (ICC = 0.929-0.994, p < 0.001). Muscle thickness and subcutaneous adipose tissue thickness ultrasound and magnetic resonance imaging measurements revealed good to very good closeness of agreement (ICC = 0.835-0.969, p < 0.001), whereas cross-sectional area showed only average closeness of agreement (ICC = 0.727, p < 0.001). A strong predictive positive correlation for ultrasound and magnetic resonance imaging-based measurements of crosssectional area was found (R-2 = 0.793, p < 0.001). Conclusion: By standardization of an examination protocol, quantitative vastus lateralis muscle ultrasound proved to be a reliable method for assessing vastus lateralis muscle size. Furthermore, this protocol is valid for measuring muscle thickness and subcutaneous adipose tissue thickness, although there seems to be a systematic underestimation of crosssectional area depending on subcutaneous adipose tissue thickness. |
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| Item Description: | Gesehen am 04.03.2022 |
| Physical Description: | Online Resource |
| ISSN: | 1651-2081 |
| DOI: | 10.2340/16501977-2854 |