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Paraspinal Muscle Changes in Individuals with and without Chronic Low Back Pain over a 4-Month Period: A Longitudinal MRI Study

Author(s): Anstruther M; Sean M; Tétreault P; Fortin M;

Background and Objectives: Previous research has shown associations between atrophy and fatty infiltration of the lumbar paraspinal musculature and low back pain (LBP). However, few studies have examined longitudinal changes in healthy controls and individu...

Article GUID: 38541216
MVComp toolbox: MultiVariate Comparisons of brain MRI features accounting for common information across metrics

Author(s): Tremblay SA; Alasmar Z; Pirhadi A; Carbonell F; Iturria-Medina Y; Gauthier CJ; Steele CJ;

Multivariate approaches have recently gained in popularity to address the physiological unspecificity of neuroimaging metrics and to better characterize the complexity of biological processes underlying behavior. However, commonly used approaches are biased...

Article GUID: 38463982
The assessment of paraspinal muscle epimuscular fat in participants with and without low back pain: A case-control study

Author(s): Rosenstein B; Burdick J; Roussac A; Rye M; Naghdi N; Valentin S; Licka T; Sean M; Tétreault P; Elliott J; Fortin M;...

It remains unclear whether paraspinal muscle fatty infiltration in low back pain (LBP) is i) solely intramuscular, ii) is lying outside the epimysium between the muscle and fascial plane (epimuscul...

Article GUID: 38280825
Consistency of electrical source imaging in presurgical evaluation of epilepsy across different vigilance states

Author(s): Avigdor T; Abdallah C; Afnan J; Cai Z; Rammal S; Grova C; Frauscher B;

Objective: The use of electrical source imaging (ESI) in assessing the source of interictal epileptic discharges (IEDs) is gaining increasing popularity in presurgical work-up of patients with drug-resistant focal epilepsy. While vigilance affects the abili...

Article GUID: 38217279
NSF evaluation of gadolinium biodistribution in renally impaired rats: Using novel metabolic Gd2O3 nanoparticles coated with β-cyclodextrin (Gd2O3@PCD) in MR molecular imaging

Author(s): Ashouri H; Alam NR; Khoobi M; Haghgoo S; Rasouli Z; Gholami M;

The use of conventional gadolinium(Gd)-based contrast agents in magnetic resonance imaging (MRI) poses a significant risk of Nephrogenic Systemic Fibrosis (NSF) syndrome in patients with impaired renal function (grades 4 and 5). To address this issue, a new...

Article GUID: 38215955
Decreased long-range temporal correlations in the resting-state functional magentic resonance imaging blood-oxygen-level-dependent signal reflect motor sequence learning up to 2 weeks following training

Author(s): Jäger AP; Bailey A; Huntenburg JM; Tardif CL; Villringer A; Gauthier CJ; Nikulin V; Bazin PL; Steele CJ;...

Decreased long-range temporal correlations (LRTC) in brain signals can be used to measure cognitive effort during task execution. Here, we examined how learning a motor sequence affects long-range ...

Article GUID: 38124341
Effect of aquatic exercise versus standard care on paraspinal and gluteal muscles morphology in individuals with chronic low back pain: a randomized controlled trial protocol

Author(s): Rosenstein B; Montpetit C; Vaillancourt N; Dover G; Khalini-Mahani N; Weiss C; Papula LA; Melek A; Fortin M;...

Background: Low back pain (LBP) is one of the most disabling diseases and a major health issue. Despite the evidence of a link between paraspinal and gluteal muscle dysfunction and LBP, it is unkno...

Article GUID: 38110922
Prioritizing a research agenda on built environments and physical activity: a twin panel Delphi consensus process with researchers and knowledge users

Author(s): Prince SA; Lang JJ; de Groh M; Badland H; Barnett A; Littlejohns LB; Brandon NC; Butler GP; Casu G; Cerin E; Colley RC; de Lannoy L; Demchen...

Background: The growth of urban dwelling populations globally has led to rapid increases of research and policy initiatives addressing associations between the built environment an...

Article GUID: 38062460
Perceptions of self-monitoring dietary intake according to a plate-based approach: A qualitative study

Author(s): Kheirmandparizi M; Gouin JP; Bouchaud CC; Kebbe M; Bergeron C; Madani Civi R; Rhodes RE; Farnesi BC; Bouguila N; Conklin AI; Lear SA; Cohen ...

Dietary self-monitoring is a behaviour change technique used to help elicit and sustain dietary changes over time. Current dietary self-monitoring tools focus primarily on itemizing foods and count...

Article GUID: 38015899
Title:Seasonal Changes in Lumbar Multifidus Muscle in University Rugby Players.
Authors:Roy A,  Rivaz H,  Rizk A,  Frenette S,  Boily M,  Fortin M
Link:https://www.ncbi.nlm.nih.gov/pubmed/32925493
Category:Med Sci Sports Exerc
PMID:32925493
Dept Affiliation: PERFORM
1 Department Health Kinesiology and Applied Physiology, Concordia University, Montreal, Quebec, CANADA.
2 PERFORM Centre, Concordia University, Montreal, Quebec, CANADA.

Description:

Seasonal Changes in Lumbar Multifidus Muscle in University Rugby Players.

Med Sci Sports Exerc. 2020 Sep 11; :

Authors: Roy A, Rivaz H, Rizk A, Frenette S, Boily M, Fortin M

Abstract

PURPOSE: Although smaller lumbar multifidus muscle (LMM) was reported to be a strong predictor of lower limb injury (LLI) in Australian Football League (AFL) players, LMM morphology has not been investigated in rugby athletes. This study examined seasonal changes in LMM in rugby players and whether LMM characteristics were associated with low back pain (LBP) and LLI.

METHODS: Ultrasound examinations of the LMM were acquired in 21 university level rugby players (12 females, 9 males) at preseason and end-season. LMM cross-sectional area (CSA), thickness at rest, and thickness during submaximal contraction (e.g. contralateral arm lift) measurements in prone and standing were obtained bilaterally at the L5-S1 level. The percent change in LMM thickness during contraction was calculated as: [(thicknesscontracted- thicknessrest)/thicknessrest x 100]. Self-reported questionnaires were used to acquire data on LBP and LLI.

RESULTS: There was no significant difference in LMM characteristics between preseason and end-season measurements (p>0.05). Preseason LMM CSA, side-to-side CSA asymmetry, thickness at rest or during contraction were not associated with LBP or LLI. However, a lower % thickness change in the standing position was significantly associated with having LBP during the preseason (p=0.01) and playing season (p=0.001), as well as LLI during the preseason (p=0.03).

CONCLUSIONS: This study provides preliminary evidence that LMM contractile ability and behavior during functional movement, such as standing, may have important implications for the susceptibility to injury among rugby athletes.

PMID: 32925493 [PubMed - as supplied by publisher]