Altered Metabolic Activity and Morphology of Lower Limb Muscles 1–2 Years Following Anterior Cruciate Ligament Reconstruction.
The purpose of this study was to explore between‐limb differences in gluteal, quadriceps, hamstring, and triceps surae muscle size and activity during a repeated vertical jump‐landing task in individuals with a history of unilateral anterior cruciate ligament reconstruction (ACLR). Twelve recreation...
| Published in: | Scandinavian Journal of Medicine & Science in Sports (John Wiley & Sons, Inc.) Vol. 35; no. 6; pp. 1 - 11 |
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| Main Authors: | , , , , , |
| Format: | diagnostic images equations & formulas pictorial research tables/charts Journal Article |
| Published: |
John Wiley & Sons, Inc.
Jun2025
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=186137956&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 186137956 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 16000838 NRNW jtl: Scandinavian Journal of Medicine & Science in Sports (John Wiley & Sons, Inc.) issn: 16000838 maglogo: N pubinfo: dt: Jun2025 vid: 35 iid: 6 pid: 52269 pub: John Wiley & Sons, Inc. artinfo: ui: 186137956 186137956 186137956 10.1111/sms.70079 186137956 ppf: 1 ppct: 10 formats: tig: atl: Altered Metabolic Activity and Morphology of Lower Limb Muscles 1–2 Years Following Anterior Cruciate Ligament Reconstruction. aug: au: Dutaillis, Benjamin Collings, Tyler Bellinger, Philip Timmins, Ryan G. Kennedy, Benjamin Bourne, Matthew N. affil: School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Gold Coast, Australia sug: subj: Anterior Cruciate Ligament Reconstruction Adverse Effects Jumping Task Performance and Analysis Lower Extremity Muscle, Skeletal Physiology Muscle, Skeletal Anatomy and Histology Human Cross Sectional Studies Descriptive Statistics Data Analysis Software Magnetic Resonance Imaging Univariate Statistics Confidence Intervals Linear Regression Male Female Adult Adult: 19-44 years Male Female ab: The purpose of this study was to explore between‐limb differences in gluteal, quadriceps, hamstring, and triceps surae muscle size and activity during a repeated vertical jump‐landing task in individuals with a history of unilateral anterior cruciate ligament reconstruction (ACLR). Twelve recreationally active participants with a unilateral history of ACLR involving a semitendinosus autograft (1–2.5 years post‐surgery) underwent functional magnetic resonance imaging (fMRI) before and immediately after 60 vertical jumps. Exercise‐induced increases in transverse (T2) relaxation times and resting muscle volumes were measured in 12 lower limb muscles. Linear mixed models were used to explore differences between the ACLR and uninjured contralateral limb, as well as their relationship with vertical jump performance. Reconstructed limbs displayed smaller muscle volumes in vastus medialis (p = 0.028), rectus femoris (p = 0.019), semitendinosus (p < 0.001), and gastrocnemius lateral head (p = 0.028) than homonymous muscles in the uninjured contralateral limb. Limbs with a history of ACLR also exhibited smaller percentage changes in T2 relaxation time for semitendinosus (p < 0.001), semimembranosus (p = 0.002), lateral gastrocnemius (p = 0.014), and soleus (p = 0.008), while the vastus lateralis displayed a greater increase (p = 0.001) than uninjured contralateral limbs. Between‐limb asymmetry in quadriceps muscle volume and activity was associated with between‐limb asymmetry in vertical jump‐landing impulse (r2 = 0.30–0.34). The findings from this study may help to inform the design of exercise interventions aimed at restoring lower limb function and reducing reinjury risk in individuals with a history of ACLR. pubtype: Academic Journal doctype: diagnostic images equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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