Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle Thickness

# Background A landing error scoring system (LESS) is widely used to evaluate landing maneuvers. Poor landing maneuvers, such as lateral bending of the trunk, are thought to be associated with a risk of lower-extremity injury. However, no studies have examined the association between landing and tr...

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Main Authors: Yuki Muramoto, Hironobu Kuruma
Format: Article
Language:English
Published: North American Sports Medicine Institute 2024-09-01
Series:International Journal of Sports Physical Therapy
Online Access:https://doi.org/10.26603/001c.122639
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author Yuki Muramoto
Hironobu Kuruma
author_facet Yuki Muramoto
Hironobu Kuruma
author_sort Yuki Muramoto
collection DOAJ
description # Background A landing error scoring system (LESS) is widely used to evaluate landing maneuvers. Poor landing maneuvers, such as lateral bending of the trunk, are thought to be associated with a risk of lower-extremity injury. However, no studies have examined the association between landing and trunk muscle function, which is associated with a high risk of lower-extremity injury. # Hypothesis/Purpose This study examined whether an association exists between landing movements and a high risk of lower-extremity injury and trunk muscle function. It was hypothesized that athletes with poor activation of deep trunk muscle (transversus abdominis and internal oblique) would have lower LESS scores. # Study Design Cross-sectional study # Methods The trunk muscle thickness at rest and during the plank was measured using ultrasonography. The percent of change in muscle thickness (during plank/at rest) was calculated. The LESS was measured using the Physimax. Based on the LESS scores, patients were divided into high- (LESS > 6) and low-risk (5 > LESS) groups for lower extremity injury. The relationship between the high-risk group and trunk muscle thickness was examined using a stepwise regression analysis. # Results The high-risk group had significantly lower muscle thicknesses of the transversus abdominis (p=0.02) and transversus abdominis plus internal oblique abdominis (p=0.03) muscles during the plank. Additionally, the high-risk group showed significantly lower percent of change in muscle thickness of the internal oblique (p=0.02) and transversus abdominis plus internal oblique (p=0.01) muscles. Only the percentage of change in the thickness of the internal oblique and transverse abdominal muscles was extracted from the regression as a factor. # Conclusion The findings indicated that athletes with landing movements and a high risk of injury, as determined based on the LESS results, had low trunk muscle function, and a relationship was observed between the change in thickness of transversus abdominis and internal oblique abdominis muscles. # Level of Evidence 3B
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spelling doaj-art-dba6bf3cd9cf4c28ad7ffe20cee94f012025-02-11T20:27:35ZengNorth American Sports Medicine InstituteInternational Journal of Sports Physical Therapy2159-28962024-09-01199Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle ThicknessYuki MuramotoHironobu Kuruma# Background A landing error scoring system (LESS) is widely used to evaluate landing maneuvers. Poor landing maneuvers, such as lateral bending of the trunk, are thought to be associated with a risk of lower-extremity injury. However, no studies have examined the association between landing and trunk muscle function, which is associated with a high risk of lower-extremity injury. # Hypothesis/Purpose This study examined whether an association exists between landing movements and a high risk of lower-extremity injury and trunk muscle function. It was hypothesized that athletes with poor activation of deep trunk muscle (transversus abdominis and internal oblique) would have lower LESS scores. # Study Design Cross-sectional study # Methods The trunk muscle thickness at rest and during the plank was measured using ultrasonography. The percent of change in muscle thickness (during plank/at rest) was calculated. The LESS was measured using the Physimax. Based on the LESS scores, patients were divided into high- (LESS > 6) and low-risk (5 > LESS) groups for lower extremity injury. The relationship between the high-risk group and trunk muscle thickness was examined using a stepwise regression analysis. # Results The high-risk group had significantly lower muscle thicknesses of the transversus abdominis (p=0.02) and transversus abdominis plus internal oblique abdominis (p=0.03) muscles during the plank. Additionally, the high-risk group showed significantly lower percent of change in muscle thickness of the internal oblique (p=0.02) and transversus abdominis plus internal oblique (p=0.01) muscles. Only the percentage of change in the thickness of the internal oblique and transverse abdominal muscles was extracted from the regression as a factor. # Conclusion The findings indicated that athletes with landing movements and a high risk of injury, as determined based on the LESS results, had low trunk muscle function, and a relationship was observed between the change in thickness of transversus abdominis and internal oblique abdominis muscles. # Level of Evidence 3Bhttps://doi.org/10.26603/001c.122639
spellingShingle Yuki Muramoto
Hironobu Kuruma
Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle Thickness
International Journal of Sports Physical Therapy
title Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle Thickness
title_full Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle Thickness
title_fullStr Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle Thickness
title_full_unstemmed Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle Thickness
title_short Relationship Between the Results of the Landing Error Scoring System and Trunk Muscle Thickness
title_sort relationship between the results of the landing error scoring system and trunk muscle thickness
url https://doi.org/10.26603/001c.122639
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