scholarly journals Determining Physiological and Psychological Predictors of Time to Task Failure on a Virtual Reality S�rensen Test in Participants With and Without Recurrent Low Back Pain: Exploratory Study (Preprint)

2018 ◽  
Author(s):  
Megan E Applegate ◽  
Christopher R France ◽  
David W Russ ◽  
Samuel T Leitkam ◽  
James S Thomas
Keyword(s):  
Virtual Reality ◽  
Low Back Pain ◽  
Back Pain ◽  
Test Performance ◽  
Self Efficacy ◽  
Biceps Femoris ◽  
Erector Spinae ◽  
Low Back ◽  
History Of ◽  
Recurrent Low Back Pain

BACKGROUND Sørensen trunk extension endurance test performance predicts the development of low back pain and is a strong discriminator of those with and without low back pain. Performance may greatly depend on psychological factors, such as kinesiophobia, self-efficacy, and motivation. Virtual reality video games have been used in people with low back pain to encourage physical activity that would otherwise be avoided out of fear of pain or harm. Accordingly, we developed a virtual reality video game to assess the influence of immersive gaming on the Sørensen test performance. OBJECTIVE The objective of our study was to determine the physiological and psychological predictors of time to task failure (TTF) on a virtual reality Sørensen test in participants with and without a history of recurrent low back pain. METHODS We recruited 24 individuals with a history of recurrent low back pain and 24 sex-, age-, and body mass index–matched individuals without a history of low back pain. Participants completed a series of psychological measures, including the Center for Epidemiological Studies-Depression Scale, Pain Resilience Scale, Pain Catastrophizing Scale, Tampa Scale for Kinesiophobia, and a self-efficacy measure. The maximal isometric strength of trunk and hip extensors and TTF on a virtual reality Sørensen test were measured. Electromyography of the erector spinae, gluteus maximus, and biceps femoris was recorded during the strength and endurance trials. RESULTS A two-way analysis of variance revealed no significant difference in TTF between groups (P=.99), but there was a trend for longer TTF in females on the virtual reality Sørensen test (P=.06). Linear regression analyses were performed to determine predictors of TTF in each group. In healthy participants, the normalized median power frequency slope of erector spinae (beta=.450, P=.01), biceps femoris (beta=.400, P=.01), and trunk mass (beta=−.32, P=.02) predicted TTF. In participants with recurrent low back pain, trunk mass (beta=−.67, P<.001), Tampa Scale for Kinesiophobia (beta=−.43, P=.01), and self-efficacy (beta=.35, P=.03) predicted TTF. CONCLUSIONS Trunk mass appears to be a consistent predictor of performance. Kinesiophobia appears to negatively influence TTF for those with a history of recurrent low back pain, but does not influence healthy individuals. Self-efficacy is associated with better performance in individuals with a history of recurrent low back pain, whereas a less steep median power frequency slope of the trunk and hip extensors is associated with better performance in individuals without a history of low back pain.

scholarly journals Rowers with a recent history of low back pain engage different regions of the lumbar erector spinae during rowing

2019 ◽  
Vol 22 (11) ◽  
pp. 1206-1212 ◽  
Author(s):  
Eduardo Martinez-Valdes ◽  
Fiona Wilson ◽  
Neil Fleming ◽  
Sarah-Jane McDonnell ◽  
Alex Horgan ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Erector Spinae ◽  
Recent History ◽  
Low Back ◽  
History Of

scholarly journals A history of low back pain associates with altered electromyographic activation patterns in response to perturbations of standing balance

2011 ◽  
Vol 106 (5) ◽  
pp. 2506-2514 ◽  
Author(s):  
Jesse V. Jacobs ◽  
Sharon M. Henry ◽  
Stephanie L. Jones ◽  
Juvena R. Hitt ◽  
Janice Y. Bunn
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Muscle Activation ◽  
Late Phase ◽  
Standing Balance ◽  
Erector Spinae ◽  
Low Back ◽  
Activation Patterns ◽  
Postural Responses ◽  
History Of

People with a history of low back pain (LBP) exhibit altered responses to postural perturbations, and the central neural control underlying these changes in postural responses remains unclear. To characterize more thoroughly the change in muscle activation patterns of people with LBP in response to a perturbation of standing balance, and to gain insight into the influence of early- vs. late-phase postural responses (differentiated by estimates of voluntary reaction times), this study evaluated the intermuscular patterns of electromyographic (EMG) activations from 24 people with and 21 people without a history of chronic, recurrent LBP in response to 12 directions of support surface translations. Two-factor general linear models examined differences between the 2 subject groups and 12 recorded muscles of the trunk and lower leg in the percentage of trials with bursts of EMG activation as well as the amplitudes of integrated EMG activation for each perturbation direction. The subjects with LBP exhibited 1) higher baseline EMG amplitudes of the erector spinae muscles before perturbation onset, 2) fewer early-phase activations at the internal oblique and gastrocnemius muscles, 3) fewer late-phase activations at the erector spinae, internal and external oblique, rectus abdominae, and tibialis anterior muscles, and 4) higher EMG amplitudes of the gastrocnemius muscle following the perturbation. The results indicate that a history of LBP associates with higher baseline muscle activation and that EMG responses are modulated from this activated state, rather than exhibiting acute burst activity from a quiescent state, perhaps to circumvent trunk displacements.

scholarly journals Jogging Kinematics After Lumbar Paraspinal Muscle Fatigue

2009 ◽  
Vol 44 (5) ◽  
pp. 475-481 ◽  
Author(s):  
Joseph M. Hart ◽  
D. Casey Kerrigan ◽  
Julie M. Fritz ◽  
Christopher D. Ingersoll
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Spine ◽  
Lower Extremity ◽  
Healthy Controls ◽  
Low Back ◽  
Trunk Flexion ◽  
History Of ◽  
Lumbar Extension ◽  
Recurrent Low Back Pain

Abstract Context: Isolated lumbar paraspinal muscle fatigue causes lower extremity and postural control deficits. Objective: To describe the change in body position during gait after fatiguing lumbar extension exercises in persons with recurrent episodes of low back pain compared with healthy controls. Design: Case-control study. Setting: Motion analysis laboratory. Patients or Other Participants: Twenty-five recreationally active participants with a history of recurrent episodes of low back pain, matched by sex, height, and mass with 25 healthy controls. Intervention(s): We measured 3-dimensional lower extremity and trunk kinematics before and after fatiguing isometric lumbar paraspinal exercise. Main Outcome Measure(s): Measurements were taken while participants jogged on a custom-built treadmill surrounded by a 10-camera motion analysis system. Results: Group-by-time interactions were observed for lumbar lordosis and trunk angles (P &lt; .05). A reduced lumbar spine extension angle was noted, reflecting a loss of lordosis and an increase in trunk flexion angle, indicating increased forward trunk lean, in healthy controls after fatiguing lumbar extension exercise. In contrast, persons with a history of recurrent low back pain exhibited a slight increase in spine extension, indicating a slightly more lordotic position of the lumbar spine, and a decrease in trunk flexion angles after fatiguing exercise. Regardless of group, participants experienced, on average, greater peak hip extension after lumbar paraspinal fatigue. Conclusions: Small differences in response may represent a necessary adaptation used by persons with recurrent low back pain to preserve gait function by stabilizing the spine and preventing inappropriate trunk and lumbar spine positioning.

scholarly journals The effect of experimental low back pain on lumbar muscle activity in people with a history of clinical low back pain: a muscle functional MRI study

2016 ◽  
Vol 115 (2) ◽  
pp. 851-857 ◽  
Author(s):  
Lieven Danneels ◽  
Barbara Cagnie ◽  
Roseline D'hooge ◽  
Yves De Deene ◽  
Geert Crombez ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Functional Mri ◽  
Muscle Activity ◽  
Experimental Pain ◽  
Erector Spinae ◽  
Low Back ◽  
Lumbar Muscle ◽  
History Of ◽  
Trunk Extension

In people with a history of low back pain (LBP), structural and functional alterations have been observed at several peripheral and central levels of the sensorimotor pathway. These existing alterations might interact with the way the sensorimotor system responds to pain. We examined this assumption by evaluating the lumbar motor responses to experimental nociceptive input of 15 participants during remission of unilateral recurrent LBP. Quantitative T2 images (muscle functional MRI) were taken bilaterally of multifidus, erector spinae, and psoas at several segmental levels (L3 upper and L4 upper and lower endplate) and during several conditions: 1) at rest, 2) upon trunk-extension exercise without pain, and 3) upon trunk-extension exercise with experimental induced pain at the clinical pain-side (1.5-ml intramuscular hypertonic saline injections in erector spinae). Following experimental pain induction, muscle activity levels similarly reduced for all three muscles, on both painful and nonpainful sides, and at multiple segmental levels ( P = 0.038). Pain intensity and localization from experimental LBP were similar as during recalled clinical LBP episodes. In conclusion, unilateral and unisegmental experimental LBP exerts a generalized and widespread decrease in lumbar muscle activity during remission of recurrent LBP. This muscle response is consistent with previous observed patterns in healthy people subjected to the same experimental pain paradigm. It is striking that similar inhibitory patterns in response to pain could be observed, despite the presence of preexisting alterations in the lumbar musculature during remission of recurrent LBP. These results suggest that motor output can modify along the course of recurrent LBP.

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