Trunk neuromuscular pattern alterations during a controlled functional task in a low back injured group deemed ready to resume regular activities

Hubley‐Kozey, Cheryl L.; Moreside, Janice M.; Quirk, D. Adam

doi:10.3233/wor-131689

Cited by 8 publications

(20 citation statements)

References 44 publications

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“…For individuals who experience symptom resolution from LBP, altered trunk muscle activation may persist 3 ; and this has been thought to increase the risk of symptom recurrence 3,4 . Lifting is an ideal task to investigate in individuals with LBP, as it commonly provokes pain 5 and functional alterations in people with LBP during lifting may persist into remission 6,7 .…”

Section: Influence Of Low Back Pain and Its Remission On Motor Abundamentioning

confidence: 99%

“…Although there are many studies which have investigated how LBP alters the activity of single muscles 7,[16][17][18] , no studies have evaluated how LBP alters motor abundance towards the stabilization (defined as reducing the variability) of important kinematic profiles during lifting. Only two studies have used UCM to investigate motor control impairments in people with LBP using segmental angles as motor degrees of freedom (DOF), to stabilize the centre of mass (COM) and head trajectory displacements during a surface perturbation in standing 19 and during a sit-to-stand task 20 .…”

Section: Influence Of Low Back Pain and Its Remission On Motor Abundamentioning

confidence: 99%

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Influence of low back pain and its remission on motor abundance in a low-load lifting task

Liew

Nunzio

Srivastava

et al. 2020

Sci Rep

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Having an abundance of motor solutions during movement may be advantageous for the health of musculoskeletal tissues, given greater load distribution between tissues. The aim of the present study was to understand whether motor abundance differs between people with and without low back pain (LBP) during a low-load lifting task. Motion capture with electromyography (EMG) assessment of 15 muscles was performed on 48 participants [healthy control (con) = 16, remission LBP (rLBP) = 16, current LBP (cLBP) = 16], during lifting. Non-negative matrix factorization and uncontrolled manifold analysis were performed to decompose inter-repetition variability in the temporal activity of muscle modes into goal equivalent (GEV) and non-goal equivalent (NGEV) variabilities in the control of the pelvis and trunk linear displacements. Motor abundance occurs when the ratio of GEV to NGEV exceeds zero. There were significant group differences in the temporal activity of muscle modes, such that both cLBP and rLBP individuals demonstrated greater activity of muscle modes that reflected lumbopelvic coactivation during the lifting phase compared to controls. For motor abundance, there were no significant differences between groups. Individuals with LBP, including those in remission, had similar overall motor abundance, but use different activation profiles of muscle modes than asymptomatic people during lifting.

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Section: Influence Of Low Back Pain and Its Remission On Motor Abundamentioning

confidence: 99%

Section: Influence Of Low Back Pain and Its Remission On Motor Abundamentioning

confidence: 99%

Influence of low back pain and its remission on motor abundance in a low-load lifting task

Liew

Nunzio

Srivastava

et al. 2020

Sci Rep

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“…20 In addition, lumbar multifidus activation onset times remain altered while performing different tasks despite remission from symptoms. [21][22][23] A recent study 24 showed that the relative relationship among a comprehensive set of abdominal and back muscle activation amplitudes was different during a standard lift and replace task, as were the temporal patterns during a dynamic transfer task, 25 in individuals deemed recovered (minimal pain and dysfunction) from a recent LBI (<12wk). At follow-up, the amplitude and temporal patterns varied more in the group that reinjured their low back than the group that did not reinjure, compared with non-LBI controls.…”

Section: ª 2014 By the American Congress Of Rehabilitation Medicinementioning

confidence: 99%

Temporal Patterns of the Trunk Muscles Remain Altered in a Low Back–Injured Population Despite Subjective Reports of Recovery

Moreside

Quirk

Hubley‐Kozey

2014

Archives of Physical Medicine and Rehabilitation

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“…It is known that different factors can change the recruitment pattern for the same task, such as low back pain ( Butler et al, 2013 ; Helgadottir et al, 2011 ; Hubley-Kozey et al, 2002 , 2014 ), changes in movement velocity ( Van Damme et al, 2013 ), fatigue ( Qi et al, 2012 ), anterior cruciate ligament injury ( Jamison et al, 2013 ), and warming-up before training ( Sotiropoulos et al, 2010 ). From our results, it seems that exercise order is another factor that can influence the pattern of muscular recruitment.…”

Section: Discussionmentioning

confidence: 99%

“…A tool that may contribute to better understanding of the effects of exercise order on strength training is the electromyographic activity (EMG). This method allows to verify whether the pattern of activation in different exercises is altered when they are at the beginning or at the end of the training session ( Butler et al, 2013 ; Helgadottir et al, 2011 ; Hubley-Kozey et al, 2002 , 2014 ; Jamison et al, 2013 ; Qi et al, 2012 ; Sotiropoulos et al, 2010 ; Van Damme et al, 2013 ). Thus, the aim of this study was to analyze changes in the pattern of muscle activation between chosen exercises applied in different order.…”

Section: Introductionmentioning

confidence: 99%

Influence of Exercise Order on Electromyographic Activity During Upper Body Resistance Training

Soncin

Pennone

Guimarães

et al. 2014

Journal of Human Kinetics

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The purpose of this study was to investigate the effects of exercise order on electromyographic activity in different muscle groups among youth men with experience in strength training. Three sets of 8 RM were performed of each exercise in two sequences order: (a) sequence A: bench press, chest fly, shoulder press, shoulder abduction, close grip bench press and lying triceps extension; (b) sequence B: the opposite order. The electromyographic activity was analyzed in the sternocostal head of the pectoralis major, anterior deltoid, and long head triceps brachii, normalized for maximal voluntary isometric contraction. The muscles activity of the sternocostal head of the pectoralis major, anterior deltoid, and long head triceps brachii showed significant interaction between sequence and exercise. The sternocostal head of the pectoralis major showed considerably higher activity in sequence A (100.13 ± 13.56%) than sequence B (81.47 ± 13.09%) for the chest fly. The anterior deltoid showed significantly higher electromyographic activity in sequence B (86.81 ± 40.43%) than sequence A (66.15 ± 22.02%) for the chest fly, whereas for the lying triceps extension, the electromyographic activity was significantly higher in sequence A (53.89 ± 27.09%) than sequence B (34.32 ± 23.70%). For the long head triceps brachii, only the shoulder press showed differences between sequences (A = 52.43 ± 14.64 vs. B = 38.53 ± 16.26). The present study showed that the exercise order could modify the training results even though there was no alteration in volume and intensity of the exercise. These changes may result in different training adaptations.

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Trunk neuromuscular pattern alterations during a controlled functional task in a low back injured group deemed ready to resume regular activities

Cited by 8 publications

References 44 publications

Influence of low back pain and its remission on motor abundance in a low-load lifting task

Influence of low back pain and its remission on motor abundance in a low-load lifting task

Temporal Patterns of the Trunk Muscles Remain Altered in a Low Back–Injured Population Despite Subjective Reports of Recovery

Influence of Exercise Order on Electromyographic Activity During Upper Body Resistance Training

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