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Frasie A, Massé-Alarie H, Bielmann M, Gauthier N, Roudjane M, Pagé I, Gosselin B, Roy JS, Messaddeq Y, Bouyer LJ. Potential of a New, Flexible Electrode sEMG System in Detecting Electromyographic Activation in Low Back Muscles during Clinical Tests: A Pilot Study on Wearables for Pain Management. SENSORS (BASEL, SWITZERLAND) 2024; 24:4510. [PMID: 39065908 PMCID: PMC11280768 DOI: 10.3390/s24144510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 06/30/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024]
Abstract
BACKGROUND While low back pain (LBP) is the leading cause of disability worldwide, its clinical objective assessment is currently limited. Part of this syndrome arises from the abnormal sensorimotor control of back muscles, involving increased muscle fatigability (i.e., assessed with the Biering-Sorensen test) and abnormal muscle activation patterns (i.e., the flexion-extension test). Surface electromyography (sEMG) provides objective measures of muscle fatigue development (median frequency drop, MDF) and activation patterns (RMS amplitude change). This study therefore assessed the sensitivity and validity of a novel and flexible sEMG system (NSS) based on PEVA electrodes and potentially embeddable in textiles, as a tool for objective clinical LBP assessment. METHODS Twelve participants wearing NSS and a commercial laboratory sEMG system (CSS) performed two clinical tests used in LBP assessment (Biering-Sorensen and flexion-extension). Erector spinae muscle activity was recorded at T12-L1 and L4-L5. RESULTS NSS showed sensitivity to sEMG changes associated with fatigue development and muscle activations during flexion-extension movements (p < 0.05) that were similar to CSS (p > 0.05). Raw signals showed moderate cross-correlations (MDF: 0.60-0.68; RMS: 0.53-0.62). Adding conductive gel to the PEVA electrodes did not influence sEMG signal interpretation (p > 0.05). CONCLUSIONS This novel sEMG system is promising for assessing electrophysiological indicators of LBP during clinical tests.
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Affiliation(s)
- Antoine Frasie
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
| | - Hugo Massé-Alarie
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
- School of Rehabilitation Sciences, Faculty of Medicine, Université Laval, Quebec City, QC G1M 2X8, Canada;
| | - Mathieu Bielmann
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
| | - Nicolas Gauthier
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
- Department of Computer and Electrical Engineering, Faculty of Science and Engineering, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Mourad Roudjane
- School of Rehabilitation Sciences, Faculty of Medicine, Université Laval, Quebec City, QC G1M 2X8, Canada;
- Center for Optics, Photonics and Lasers (COPL), Department of Physics, Faculty of Science and Engineering, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Isabelle Pagé
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
| | - Benoit Gosselin
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
- Department of Computer and Electrical Engineering, Faculty of Science and Engineering, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Jean-Sébastien Roy
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
- School of Rehabilitation Sciences, Faculty of Medicine, Université Laval, Quebec City, QC G1M 2X8, Canada;
| | - Younes Messaddeq
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
- Center for Optics, Photonics and Lasers (COPL), Department of Physics, Faculty of Science and Engineering, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Laurent J. Bouyer
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale Nationale (CIUSSS-CN), Quebec City, QC G1M 2S8, Canada; (A.F.); (H.M.-A.); (M.B.); (N.G.); (I.P.); (B.G.); (J.-S.R.); (Y.M.)
- School of Rehabilitation Sciences, Faculty of Medicine, Université Laval, Quebec City, QC G1M 2X8, Canada;
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Alkhamees NH, Ali OI, Abdelraouf OR, Ibrahim ZM, Mohamed AA. Assessment of Isokinetic Trunk Muscle Strength and Fatigue Rate in Individuals after Bariatric Surgery. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:534. [PMID: 38674180 PMCID: PMC11052368 DOI: 10.3390/medicina60040534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/16/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024]
Abstract
Background and Objectives: Lean body mass loss after bariatric surgery (BS) is remarkable, despite an effective long-term mass reduction and significant declines in comorbidities. A person's functional capacity is adversely affected when their skeletal muscle strength declines by up to 30%. This study aimed to assess the isokinetic trunk muscle strength and fatigue rate in individuals after BS. Materials and Methods: This study included fifty-eight patients, both male and female, ranging in age from 19 to 45. Twenty-seven individuals had BS and twenty-seven healthy people served as the control group. The primary outcomes were the measurement of the concentric and eccentric isokinetic muscle strength of the trunk flexor and extensor muscles. An isokinetic dynamometer (Biodex Rehabilitation and Testing System 3) was used for the assessment of the isokinetic muscle strength. Noraxon EMG was used to determine a secondary outcome, which was the median frequency slop (MF/time) and root mean square slop (RMS/time) of the lumbar erector spinea muscle at 50% of the Maximum Voluntary Isometric Contraction (MVIC). Outcome measures were assessed for both groups. Results: Compared to the control group, the bariatric group showed a lower mean value of both concentric and eccentric isokinetic muscle strength for the flexor and extensor trunk muscles (p < 0.05). In terms of the EMG fatigue rate, the RMS slope increased significantly more than that of the control group, while the MF slope decreased (p > 0.05). Conclusions: The current study found that, in comparison to the healthy subjects, the BS group showed reduced levels of fatigue and isokinetic strength in the trunk muscles. Based on these results, it is recommended that individuals who underwent BS take part in tailored rehabilitation programs to avoid potential musculoskeletal issues in the future.
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Affiliation(s)
- Nouf H. Alkhamees
- Department of Rehabilitation Sciences, College of Health and Rehabilitation Sciences, Princess Nourah bint Abdulrahman University (PNU), Riyadh 11671, Saudi Arabia;
| | - Olfat Ibrahim Ali
- Physical Therapy Program, Batterjee Medical College, Jeddah 21442, Saudi Arabia; (O.I.A.); (O.R.A.)
| | - Osama R. Abdelraouf
- Physical Therapy Program, Batterjee Medical College, Jeddah 21442, Saudi Arabia; (O.I.A.); (O.R.A.)
| | - Zizi M. Ibrahim
- Department of Rehabilitation Sciences, College of Health and Rehabilitation Sciences, Princess Nourah bint Abdulrahman University (PNU), Riyadh 11671, Saudi Arabia;
| | - Aya Abdelhamied Mohamed
- Department of Biomechanics, Faculty of Physical Therapy, Cairo University, Giza 12613, Egypt;
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Shaw J, Jacobs JV, Van Dillen LR, Beneck GJ, Smith JA. Understanding the Biering-Sørensen test: Contributors to extensor endurance in young adults with and without a history of low back pain. J Electromyogr Kinesiol 2024; 74:102854. [PMID: 38171249 PMCID: PMC10842485 DOI: 10.1016/j.jelekin.2023.102854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/07/2023] [Accepted: 12/26/2023] [Indexed: 01/05/2024] Open
Abstract
The Biering-Sørensen test is commonly used to assess paraspinal muscle endurance. Research using a single repetition of the test has provided conflicting evidence for the contribution of impaired paraspinal muscle endurance to low back pain (LBP). This study investigated how Sørensen test duration, muscle activation, and muscle fatigability are affected by multiple repetitions of the test and determined predictors of Sørensen test duration in young adults with and without a history of LBP. Sixty-four young individuals performed three repetitions of the Sørensen test. Amplitude of activation and median frequency slope (fatigability) were calculated for the lumbar and thoracic paraspinals and hamstrings. Duration of the test was significantly less for the 3rd repetition in individuals with LBP. In individuals without LBP, test duration was predicted by fatigability of the lumbar paraspinals. In individuals with LBP, Sørensen test duration was predicted by fatigability of the hamstrings and amplitude of activation of the thoracic and lumbar paraspinals. Our findings demonstrate that it is necessary to amplify the difficulty of the Sørensen test to reveal impairments in young, active adults with LBP. Training programs aiming to improve lumbar paraspinal performance should monitor performance of other synergist muscles during endurance exercise.
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Affiliation(s)
- Jonathan Shaw
- Crean College of Health and Behavioral Sciences, Chapman University, CA, USA
| | - Jesse V Jacobs
- Rehabilitation and Movement Science, University of Vermont, VT, USA
| | - Linda R Van Dillen
- Program in Physical Therapy, Orthopaedic Surgery, Washington University School of Medicine in St. Louis, St. Louis, WA, USA
| | - George J Beneck
- Department of Physical Therapy, California State University, Long Beach, CA, USA
| | - Jo Armour Smith
- Crean College of Health and Behavioral Sciences, Chapman University, CA, USA.
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Marineau-Bélanger E, Vaurs M, Roy J, O'Shaughnessy J, Descarreaux M, Abboud J. Fatigue task-dependent effect on spatial distribution of lumbar muscles activity. J Electromyogr Kinesiol 2023; 73:102837. [PMID: 37951033 DOI: 10.1016/j.jelekin.2023.102837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/17/2023] [Accepted: 11/03/2023] [Indexed: 11/13/2023] Open
Abstract
This study aims to identify how spatial distribution of lumbar muscle activity is modulated by different fatigue tasks. Twenty healthy adults performed two different isometric trunk extension endurance tasks (the modified Sorensen test and the inverted modified Sorensen test) until exhaustion. During these tasks, bilateral superficial lumbar muscle activity was recorded using high-density electromyography. The spatial distribution of activation within these muscles was obtained using the centroid coordinates in the medio-lateral and cranio-caudal directions. The effects of task and endurance time (left and right sides) were investigated using repeated measures ANOVA. Results revealed a significant lateral shift of the centroid throughout the fatigue tasks on both sides and no difference between tasks. Significant task × time interaction effects were found for the cranio-caudal direction on both sides showing a significantly more caudal location of the centroid in the modified Sorensen test compared to the inverted test at the beginning of the tasks. Our findings suggest that spatial distribution of lumbar muscle activity is task-dependent in a pre-fatigue stage while an alternative but similar muscle recruitment strategy is used in both tasks to maintain performance in the later stages of muscle fatigue.
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Affiliation(s)
- Emile Marineau-Bélanger
- Département d'Anatomie, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, Trois-Rivières, Qc, G8Z 4M3, Canada; Groupe de Recherche sur les Affections Neuromusculosquelettiques, GRAN, Canada
| | - Martin Vaurs
- Centre de Recherches sur la Cognition et l'Apprentissage (UMR 7295), Faculté des Sciences du Sport, Université de Poitiers, 8 Allée Jean Monnet, 86073 Poitiers Cedex 9, France
| | - Justin Roy
- Département des Sciences de l'Activité Physique, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, Trois-Rivières, Qc, G8Z 4M3, Canada; Groupe de Recherche sur les Affections Neuromusculosquelettiques, GRAN, Canada
| | - Julie O'Shaughnessy
- Département de Chiropratique, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, Trois-Rivières, Qc, G8Z 4M3, Canada; Groupe de Recherche sur les Affections Neuromusculosquelettiques, GRAN, Canada
| | - Martin Descarreaux
- Département des Sciences de l'Activité Physique, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, Trois-Rivières, Qc, G8Z 4M3, Canada; Groupe de Recherche sur les Affections Neuromusculosquelettiques, GRAN, Canada
| | - Jacques Abboud
- Département des Sciences de l'Activité Physique, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, Trois-Rivières, Qc, G8Z 4M3, Canada; Groupe de Recherche sur les Affections Neuromusculosquelettiques, GRAN, Canada.
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Schönau T, Anders C. EMG Amplitude-Force Relationship of Lumbar Back Muscles during Isometric Submaximal Tasks in Healthy Inactive, Endurance and Strength-Trained Subjects. J Funct Morphol Kinesiol 2023; 8:jfmk8010029. [PMID: 36976126 PMCID: PMC10058474 DOI: 10.3390/jfmk8010029] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 03/29/2023] Open
Abstract
Previous data suggest a correlation between the cross-sectional area of Type II muscle fibers and the degree of non-linearity of the EMG amplitude-force relationship (AFR). In this study we investigated whether the AFR of back muscles could be altered systematically by using different training modalities. We investigated 38 healthy male subjects (aged 19-31 years) who regularly performed either strength or endurance training (ST and ET, n = 13 each) or were physically inactive (controls (C), n = 12). Graded submaximal forces on the back were applied by defined forward tilts in a full-body training device. Surface EMG was measured utilizing a monopolar 4 × 4 quadratic electrode scheme in the lower back area. The polynomial AFR slopes were determined. Between-group tests revealed significant differences for ET vs. ST and C vs. ST comparisons at the medial and caudal electrode positions, but not for ET vs. C. Further, systematic main effects of the "electrode position" could be proven for ET and C groups with decreasing x2 coefficients from cranial to caudal and lateral to medial. For ST, there was no systematic main effect of the "electrode position". The results point towards training-related changes to the fiber-type composition of muscles in the strength-trained participants, particularly for their paravertebral region.
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Affiliation(s)
- Tim Schönau
- Division of Motor Research, Pathophysiology and Biomechanics, Experimental Trauma Surgery, Department for Hand, Reconstructive, and Trauma Surgery, Jena University Hospital, Friedrich-Schiller University, 07743 Jena, Germany
| | - Christoph Anders
- Division of Motor Research, Pathophysiology and Biomechanics, Experimental Trauma Surgery, Department for Hand, Reconstructive, and Trauma Surgery, Jena University Hospital, Friedrich-Schiller University, 07743 Jena, Germany
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People with chronic low back pain display spatial alterations in high-density surface EMG-torque oscillations. Sci Rep 2022; 12:15178. [PMID: 36071134 PMCID: PMC9452584 DOI: 10.1038/s41598-022-19516-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 08/30/2022] [Indexed: 11/08/2022] Open
Abstract
We quantified the relationship between spatial oscillations in surface electromyographic (sEMG) activity and trunk-extension torque in individuals with and without chronic low back pain (CLBP), during two submaximal isometric lumbar extension tasks at 20% and 50% of their maximal voluntary torque. High-density sEMG (HDsEMG) signals were recorded from the lumbar erector spinae (ES) with a 64-electrode grid, and torque signals were recorded with an isokinetic dynamometer. Coherence and cross-correlation analyses were applied between the filtered interference HDsEMG and torque signals for each submaximal contraction. Principal component analysis was used to reduce dimensionality of HDsEMG data and improve the HDsEMG-based torque estimation. sEMG-torque coherence was quantified in the δ(0–5 Hz) frequency bandwidth. Regional differences in sEMG-torque coherence were also evaluated by creating topographical coherence maps. sEMG-torque coherence in the δ band and sEMG-torque cross-correlation increased with the increase in torque in the controls but not in the CLBP group (p = 0.018, p = 0.030 respectively). As torque increased, the CLBP group increased sEMG-torque coherence in more cranial ES regions, while the opposite was observed for the controls (p = 0.043). Individuals with CLBP show reductions in sEMG-torque relationships possibly due to the use of compensatory strategies and regional adjustments of ES-sEMG oscillatory activity.
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Nishimura T, Tanaka M, Morikoshi N, Yoshizawa T, Miyachi R. Effect of Interventions for Improving Lumbar Motor Control on Low Back Pain in Sedentary Office Workers: A Randomized Controlled Trials. Phys Ther Res 2022; 24:240-248. [PMID: 35036258 DOI: 10.1298/ptr.e10121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 08/01/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To clarify the effect of intervention with dynamic motor control exercise (DMCE) for the lumbar region on low back pain in sedentary office workers (SOWs). METHODS The participants comprised 32 SOWs with low back pain who were randomly categorized into two groups: the DMCE group and the normal trunk exercise (NTE) group. Both groups performed each exercise for three days per week for 8 weeks. The primary endpoints were evaluated for the lumbar and hip flexion angles during trunk forward bending, effect of low back pain on activities of daily living (using the Oswestry Disability Index), and intensity of low back pain (using the Visual Analog Scale) pre- and post-intervention. The extent of changes was calculated by subtracting the pre-intervention value from the post-intervention value and was compared between the two groups using an unpaired t-test. RESULTS The extent of changes in the lumbar flexion and hip flexion angles at 10° of trunk forward bending were significantly greater in the DMCE group than in the NTE group, and no significant differences were noted between the two groups at other angles of trunk forward bending. The extent of changes in the Oswestry Disability Index and the Visual Analog Scale scores were significantly greater in the DMCE group than in the NTE group. CONCLUSION DMCE is effective in improving motor control in the lumbar region and hip joints, thereby ameliorating low back pain in SOWs.
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Affiliation(s)
- Takaaki Nishimura
- Department of Community-based-Rehabilitation, Nanto Municipal Hospital, Japan
| | | | | | | | - Ryo Miyachi
- Faculty of Health and Medical Sciences, Hokuriku University, Japan
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Acute Effects of Static Self-Stretching Exercises and Foam Roller Self-Massaging on the Trunk Range of Motions and Strength of the Trunk Extensors. Sports (Basel) 2021; 9:sports9120159. [PMID: 34941797 PMCID: PMC8708179 DOI: 10.3390/sports9120159] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 12/04/2022] Open
Abstract
Although the effectiveness of static self-stretching exercises (SSSEs) and foam roller self-massaging (FRSM) in joint range of motion and muscle strength of the lower limbs has been extensively investigated, little is known about their effectiveness on the posterior trunk muscles. The present study aimed to investigate the acute effects of two 7-min SSSEs and FRSM intervention protocols on the range of trunk movements and the strength of the trunk extensors. Twenty-five healthy active males (n = 14) and females (n = 11) performed each intervention separately, one week apart. The range of motion (ROM) of the trunk-hip flexion (T-HF), the ROM of the trunk side-flexion (TSF) and rotation (TR) bilaterally, as well as the isometric maximum strength (TESmax) and endurance (TESend) of the trunk extensors were measured before and after each intervention. The ROMs of T-HF, TSF, and TR were significantly increased following both SSSEs and FRSM. The TESmax and TESend were also significantly increased after FRSM, but decreased following SSSEs. While both interventions were effective in increasing the range of motion of the trunk, a single 7-min session of FRSM presented more advantages over a similar duration SSSEs protocol due to the increase in the strength of the trunk extensors it induced.
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Kumamoto T, Seko T, Matsuda R, Miura S. Repeated standing back extension exercise: Influence on muscle shear modulus change after lumbodorsal muscle fatigue. Work 2021; 68:1229-1237. [PMID: 33867382 PMCID: PMC8293651 DOI: 10.3233/wor-213452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND In low back pain, multifidus muscle fibers reportedly exhibit increased stiffness. Low back pain was associated with lumbodorsal muscle fatigue. There is no report of using shear modulus to verify the mechanism of an immediate effect of exercise on low back pain. Here, temporary lumbodorsal muscle fatigue was created, simulating fatigue-related nonspecific low back pain. OBJECTIVE To assess the effect of standing back extension exercise on fatigued lumbodorsal muscle based on the results of multifidus muscle elasticity measured using shear wave elastography. METHODS Thirty-three healthy subjects were randomly divided into three groups. The subjects performed the Biering-Sorensen test as the fatigue-task of the lumbodorsal muscle before the standing back extension exercise. The fatigue-exercise group exercised five sets after completing the fatigue-task. The fatigue-non-exercise group remained standing for the same duration as the fatigue-exercise group without doing the exercise after the fatigue-task. The non-fatigue-exercise group exercised five sets of without performing the fatigue-task. As intra-group and inter-group factors, the shear modulus of the multifidus muscle was compared before and after the exercise. RESULTS The shear modulus of the multifidus muscle after the standing back extension exercise was significantly lower in the fatigue-exercise group, and no significant decrease was observed in the fatigue-non-exercise and non-fatigue-exercise group. CONCLUSIONS The standing back extension exercise improved the shear modulus of the fatigued multifidus muscle. Therefore, it was suggested that the change in the elasticity of fatigued muscle might lead to the prevention of low back pain caused by muscle fatigue.
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Affiliation(s)
- Tsuneo Kumamoto
- Department of Rehabilitation, Faculty of Health Science, Hokkaido Chitose College of Rehabilitation, Chitose, Hokkaido, Japan
| | - Toshiaki Seko
- Department of Rehabilitation, Faculty of Health Science, Hokkaido Chitose College of Rehabilitation, Chitose, Hokkaido, Japan
| | - Ryo Matsuda
- Department of Rehabilitation, Sinsapporo Neurosurgical Hospital, Sapporo, Hokkaido, Japan
| | - Sayo Miura
- Department of Rehabilitation, Hokusei Hospital, Chitose, Hokkaido, Japan
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Althobaiti S, Rushton A, Falla D, Heneghan NR. Measures of trunk muscle strength and their measurement properties: a protocol for a systematic review and narrative synthesis of clinical measures. BMJ Open 2021; 11:e041499. [PMID: 33414146 PMCID: PMC7797260 DOI: 10.1136/bmjopen-2020-041499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Spinal musculoskeletal conditions, including low back and neck pain, are leading causes of disability globally. The trunk muscles, which comprise muscles in the thoracic and lumbar regions, are essential for functional activities, necessitating mobility, motor control and strength. To investigate the effectiveness of interventions directed at improving trunk muscle strength, it is essential to have valid, reliable and responsive performance-based outcome measures (PBOM). While isokinetic dynamometry is considered the gold-standard PBOM, the associated costs, size/weight and operational complexity of this equipment preclude its use in a clinical setting. There is, therefore, a need to evaluate the measurement properties of alternative accessible measures of trunk strength. This systematic review therefore aims to investigate the measurement properties of PBOM of trunk muscle strength measures appropriate for use in a clinical setting. METHODS AND ANALYSIS This protocol has been designed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols. CINAHL, Web of Science, Pedro, MEDLINE, EMBASE, SPORTDiscuss will be searched systematically from the database start date up to 16 April 2020, along with reference checking and the grey literature searching. Eligibility criteria include studies investigating measurement properties of PROM for trunk muscle strength for use in a clinical setting in adults with and without spinal musculoskeletal complaints. Two independent reviewers will determine the eligibility of the studies through screening process of titles, abstract and the full text. Both reviewers will assess the risk of bias using COnsensus-based Standards for the selection of health status Measurement Instruments risk-of-bias tool and then extract the data from included studies. The overall quality of the included studies will be evaluated using the Grading of Recommendations Assessment, Development and Evaluation approach. A narrative synthesis will be carried out if meta-analysis is not applicable. Findings from this systematic review will aid clinicians and practitioners working in the field for example, sport, in using the most appropriate PBOM to measure trunk muscle strength. ETHICS AND DISSEMINATION No research ethics application is needed as there are no patient data in this study. The results of this study will be submitted to a peer reviewed journal and presented at conferences. PROSPERO REGISTRATION NUMBER CRD42020167464.
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Affiliation(s)
- Shouq Althobaiti
- Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Alison Rushton
- Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
- School of Physical Therapy, Elbourn College, Western University, London, Ontario, Canada
| | - Deborah Falla
- Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Nicola R Heneghan
- Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
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Sturion LA, Nowotny AH, Barillec F, Barette G, Santos GK, Teixeira FA, Fernandes KP, da Silva R. Comparison between high-velocity low-amplitude manipulation and muscle energy technique on pain and trunk neuromuscular postural control in male workers with chronic low back pain: A randomised crossover trial. SOUTH AFRICAN JOURNAL OF PHYSIOTHERAPY 2020; 76:1420. [PMID: 33241157 PMCID: PMC7669951 DOI: 10.4102/sajp.v76i1.1420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 07/14/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND A therapeutic recommendation for restoring function in individuals with chronic low back pain (CLBP) is manual therapy through manipulative spinal or muscle energy techniques. OBJECTIVES To compare the effectiveness of two osteopathic manipulative techniques on clinical low back symptoms and trunk neuromuscular postural control in male workers with CLBP. METHOD Ten male workers with CLBP were randomly allocated to two groups: high-velocity low-amplitude (HVLA) manipulation or muscle energy techniques (MET). Each group received one therapy per week for both techniques during 7 weeks of treatment. Pain and function were measured by using the Numeric Pain-Rating Scale, the McGill Pain Questionnaire and the Roland Morris Disability Questionnaire. The lumbar flexibility was assessed by Modified Schober Test. Electromyography (EMG) and force platform measurements were used for evaluation of trunk muscular activation and postural balance, respectively at three different times: baseline, post intervention, and 15 days later. RESULTS Both techniques were effective (p < 0.01) in reducing pain with large clinical differences (-1.8 to -2.8) across immediate and after 15 days. However, no significant effect between groups and times was found for other variables, namely neuromuscular activation and postural balance measures. CONCLUSION Both techniques (HVLA thrust manipulation and MET) were effective in reducing back pain immediately and 15 days later. Neither technique changed the trunk neuromuscular activation patterns nor postural balance in male workers with LBP. CLINICAL IMPLICATIONS These results may facilitate clinical decision-making for CLBP management in physiotherapy programs.
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Affiliation(s)
- Leandro A. Sturion
- Programs in Rehabilitation Sciences UEL/UNOPAR, LAFUP-UNOPAR, Faculty of Physical therapy, Universidade Pitagoras, Londrina, Brazil
| | - Alexandre H. Nowotny
- Programs in Rehabilitation Sciences UEL/UNOPAR, LAFUP-UNOPAR, Faculty of Physical therapy, Universidade Pitagoras, Londrina, Brazil
| | - Fabrice Barillec
- Département des Thérapie Manuelle, Gilles Barette Formations, Saint Cyr du Ronceray, Valorbiquet, France
| | - Gilles Barette
- Département des Cadre de santé-kinésithérapeute, Thérapie Manuelle, Gilles Barette Formations, Valorbiquet, France
| | - Gabriela K. Santos
- Programs in Rehabilitation Sciences UEL/UNOPAR, LAFUP-UNOPAR, Faculty of Physical therapy, Universidade Pitagoras, Londrina, Brazil
| | | | - Karen P. Fernandes
- Programs in Rehabilitation Sciences UEL/UNOPAR, LAFUP-UNOPAR, Faculty of Physical therapy, Universidade Pitagoras, Londrina, Brazil
| | - Rubens da Silva
- Programs in Rehabilitation Sciences UEL/UNOPAR, LAFUP-UNOPAR, Faculty of Physical therapy, Universidade Pitagoras, Londrina, Brazil
- Département des sciences de la santé, Lab BioNR, CUpht, Université du Québec à Chicoutimi (UQAC), Saguenay, Québec, Canada
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Vining R, Long CR, Minkalis A, Gudavalli MR, Xia T, Walter J, Coulter I, Goertz CM. Effects of Chiropractic Care on Strength, Balance, and Endurance in Active-Duty U.S. Military Personnel with Low Back Pain: A Randomized Controlled Trial. J Altern Complement Med 2020; 26:592-601. [PMID: 32543211 DOI: 10.1089/acm.2020.0107] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Objectives: To investigate whether chiropractic care influences strength, balance, and/or endurance in active-duty United States military personnel with low back pain (LBP). Design: This study employed a prospective randomized controlled trial using a pragmatic treatment approach. Participants were randomly allocated to 4 weeks of chiropractic care or to a wait-list control. Interventions: Chiropractic care consisted of spinal manipulation, education, advice, and reassurance. Settings/Location: Naval Air Technical Training Center branch clinic at the Naval Hospital Pensacola Florida. Subjects: One hundred ten active-duty military personnel 18-40 years of age with self-reported LBP. Outcome measures: Isometric pulling strength from a semisquat position was the primary outcome. Secondary outcomes were single-leg balance with eyes open and eyes closed, and trunk muscle endurance using the Biering-Sorensen test. Patient-reported outcomes such as pain severity and disability were also measured. Outcomes were measured at baseline and 4 weeks. Linear mixed-effects regression models over baseline and 4 weeks were used for analysis. Results: Participants had mean age of 30 years (18-40), 17% were female, 33% were non-white, and 86% reported chronic LBP. Mean maximum pulling strength in the chiropractic group increased by 5.08 kgs and decreased by 7.43 kgs in the wait-list group, with a statistically significant difference in mean change between groups (p = 0.003). Statistically significant differences in mean change between groups were also observed in trunk muscle endurance (13.9 sec, p = 0.002) and balance with eyes closed (0.47 sec, p = 0.01), but not in balance with eyes open (1.19 sec, p = 0.43). Differences in mean change between groups were statistically significant in favor of chiropractic for LBP-related disability, pain intensity and interference, and fear-avoidance behavior. Conclusions: Active-duty military personnel receiving chiropractic care exhibited improved strength and endurance, as well as reduced LBP intensity and disability, compared with a wait-list control.
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Affiliation(s)
- Robert Vining
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA, USA
| | - Cynthia R Long
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA, USA
| | - Amy Minkalis
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA, USA
| | - M Ram Gudavalli
- College of Chiropractic Medicine, Keiser University, West Palm Beach, FL, USA
| | - Ting Xia
- Mechanical Engineering Department, Northern Illinois University, DeKalb, IL, USA
| | - Joan Walter
- Samueli Integrative Health Programs, H&S Ventures, Alexandria, VA, USA
| | | | - Christine M Goertz
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA
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Fontana Carvalho AP, Dufresne SS, Rogerio de Oliveira M, Couto Furlanetto K, Dubois M, Dallaire M, Ngomo S, da Silva RA. Effects of lumbar stabilization and muscular stretching on pain, disabilities, postural control and muscle activation in pregnant woman with low back pain. Eur J Phys Rehabil Med 2020; 56:297-306. [PMID: 32072792 DOI: 10.23736/s1973-9087.20.06086-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Low back pain is common during pregnancy. Lumbar stabilization and stretching exercises are recommended to treat low back pain in the general population. However, few studies have applied the effects of these two interventions in pregnant women with low back pain. AIM To compare the effects of lumbar stabilization and stretching exercises for the treatment of gestational low back pain. DESIGN A pilot randomized clinical trial. SETTING Laboratory of Functional Evaluation and Human Motor Performance and physical therapy clinics. POPULATION Initially, 30 pregnant women with low back pain were recruited, of which 24 met the following inclusion criteria: being between 19-29 weeks of gestation; being in prenatal clinical follow-up; having nonspecific mechanical low back pain started in pregnancy; not participating in specific low back pain treatment in the last 3 months. A total of 20 women completed the study (10 each group). METHODS The main outcome measures were clinical (pain by Visual Analogue Scale (VAS) and McGill Pain Questionnaire and disability by Roland Morris Questionnaire), and secondary outcome measures were: postural balance (force platform); muscle activation level of multifidus, iliocostalis lumborum, rectus abdominis and external abdominal oblique (electromyography). The women were randomized into two groups for 6 weeks of intervention twice a week for a 50-minute treatment: 1) lumbar stabilization exercise protocol and 2) stretching exercise protocol. RESULTS There was a significant reduction (P=0.03) in pain (1.68 in VAS and 4.81 for McGill questionnaire) for both interventions, but no change in disability score. In addition, both interventions were comparable for a significant improvement in postural stability (in mean d=0.77) for the velocity sway parameter, and significantly increased activation (P>0.05) of the external abdominal oblique muscle after intervention. CONCLUSIONS Both modalities (lumbar stabilization and stretching) were efficient for pain reduction, improving balance and increasing one trunk activity muscle after 6 weeks of intervention in pregnant women with low back pain. CLINICAL REHABILITATION IMPACT The present study has implications, especially for clinical decision-making with regard to therapy choice in pregnant women with LBP to reduce pain and improve trunk function as measured through balance performance.
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Affiliation(s)
- Adriana P Fontana Carvalho
- Laboratory of Functional Evaluation and Human Motor Performance (LAFUP), Universidade Pitagoras UNOPAR, Londrina, PR, Brazil.,Doctoral Program in Rehabilitation Sciences, UEL/UNOPAR, Londrina, PR, Brazil
| | - Sébastien S Dufresne
- Department of Health Sciences, BioNR Research Laboratory, Université du Québec à Chicoutimi, Chicoutimi QC, Canada
| | - Márcio Rogerio de Oliveira
- Laboratory of Functional Evaluation and Human Motor Performance (LAFUP), Universidade Pitagoras UNOPAR, Londrina, PR, Brazil
| | - Karina Couto Furlanetto
- Laboratory of Functional Evaluation and Human Motor Performance (LAFUP), Universidade Pitagoras UNOPAR, Londrina, PR, Brazil.,Doctoral Program in Rehabilitation Sciences, UEL/UNOPAR, Londrina, PR, Brazil
| | - Maryane Dubois
- Department of Health Sciences, BioNR Research Laboratory, Université du Québec à Chicoutimi, Chicoutimi QC, Canada
| | - Mathieu Dallaire
- Department of Health Sciences, BioNR Research Laboratory, Université du Québec à Chicoutimi, Chicoutimi QC, Canada
| | - Suzy Ngomo
- Department of Health Sciences, BioNR Research Laboratory, Université du Québec à Chicoutimi, Chicoutimi QC, Canada
| | - Rubens A da Silva
- Laboratory of Functional Evaluation and Human Motor Performance (LAFUP), Universidade Pitagoras UNOPAR, Londrina, PR, Brazil - .,Doctoral Program in Rehabilitation Sciences, UEL/UNOPAR, Londrina, PR, Brazil.,Department of Health Sciences, BioNR Research Laboratory, Université du Québec à Chicoutimi, Chicoutimi QC, Canada.,Research Centre on Health, CIUSSS du Saguenay-Lac-Saint-Jean, Chicoutimi, QC, Canada
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Daneau C, Cantin V, Descarreaux M. Effect of Massage on Clinical and Physiological Variables During Muscle Fatigue Task in Participants With Chronic Low Back Pain: A Crossover Study. J Manipulative Physiol Ther 2019; 42:55-65. [PMID: 30955910 DOI: 10.1016/j.jmpt.2018.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 05/08/2018] [Accepted: 12/19/2018] [Indexed: 10/27/2022]
Abstract
OBJECTIVE The purpose of this study was to determine if a reduction of short-term physiological and clinical effects of muscle fatigue can be seen after a session of massage in nonspecific chronic low back pain (cLBP) individuals and to study the possible association between physiological and clinical changes induced by massage. METHODS Thirty-six cLBP individuals participated in 2 experimental sessions. In one session, the Sorenson protocol was preceded by a 30-minute massage, but in the other session, only the Sorenson test was performed by participants. Lumbar paraspinal muscle activity was recorded using surface electromyography, and maximal voluntary contraction force was measured using a load cell. Participants rated their lumbar pain intensity before and after massage and after the Sorensen protocol. A 2-way repeated-measures analysis of variance was conducted to test the effect of massage on both variables for both conditions. Pearson correlation analyses were conducted to determine the linear association between physiological and clinical responses to massage. RESULTS Results showed that pain perception was significantly reduced after massage (P = .004) but did not seem to influence pain score increases occurring after the Sorensen protocol. Individuals with a high score of low back pain-related disability showed lower back muscle endurance time (r = -.35). Massage yielded no significant effect on fatigue-related physiological variables. CONCLUSION The perception of pain in cLBP individuals was reduced after massage. Although massage yielded some positives clinical effects, they were not explained by a reduction in physiological effect of muscle fatigue.
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Affiliation(s)
- Catherine Daneau
- Département des Sciences de l'Activité Physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada.
| | - Vincent Cantin
- Département des Sciences de l'Activité Physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Martin Descarreaux
- Département des Sciences de l'Activité Physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
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15
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Vining R, Minkalis A, Long CR, Corber L, Franklin C, Gudavalli MR, Xia T, Goertz CM. Assessment of chiropractic care on strength, balance, and endurance in active-duty U.S. military personnel with low back pain: a protocol for a randomized controlled trial. Trials 2018; 19:671. [PMID: 30518400 PMCID: PMC6280458 DOI: 10.1186/s13063-018-3041-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 11/09/2018] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Low back pain (LBP) is a common cause of disability among U.S. military personnel. Approximately 20% of all diagnoses resulting in disability discharges are linked to back-related conditions. Because LBP can negatively influence trunk muscle strength, balance, and endurance, the military readiness of active-duty military personnel with LBP is potentially compromised. Chiropractic care may facilitate the strengthening of trunk muscles, the alteration of sensory and motor signaling, and a reduction in pain sensitivity, which may contribute to improving strength, balance, and endurance for individuals with LBP. This trial will assess the effects of chiropractic care on strength, balance, and endurance for active-duty military personnel with LBP. METHODS/DESIGN This randomized controlled trial will allocate 110 active-duty military service members aged 18-40 with non-surgical acute, subacute, or chronic LBP with pain severity of ≥2/10 within the past 24 h. All study procedures are conducted at a single military treatment facility within the continental United States. Participants are recruited through recruitment materials approved by the institutional review board, such as posters and flyers, as well as through provider referrals. Group assignment occurs through computer-generated random allocation to either the study intervention (chiropractic care) or the control group (waiting list) for a 4-week period. Chiropractic care consists primarily of spinal manipulation at a frequency and duration determined by a chiropractic practitioner. Strength, balance, and endurance outcomes are obtained at baseline and after 4 weeks. The primary outcome is a change between baseline and 4 weeks of peak isometric strength, which is measured by pulling on a bimanual handle in a semi-squat position. Secondary outcomes include balance time during a single-leg standing test and trunk muscle endurance with the Biering-Sorensen test. Patient-reported outcomes include pain severity, disability measured with the Roland Morris Disability Questionnaire, symptom bothersomeness, PROMIS-29, Fear Avoidance Beliefs Questionnaire, expectations of care, physical activity, and global improvement. DISCUSSION This trial may help inform further research on biological mechanisms related to manual therapies employed by chiropractic practitioners. TRIAL REGISTRATION ClinicalTrials.gov, NCT02670148 Registered on 1 February 2016.
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Affiliation(s)
- Robert Vining
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, 741 Brady St, Davenport, IA 52803 USA
| | - Amy Minkalis
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, 741 Brady St, Davenport, IA 52803 USA
| | - Cynthia R. Long
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, 741 Brady St, Davenport, IA 52803 USA
| | - Lance Corber
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, 741 Brady St, Davenport, IA 52803 USA
| | - Crystal Franklin
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, 741 Brady St, Davenport, IA 52803 USA
| | - M. Ram Gudavalli
- College of Chiropractic Medicine, Keiser University, 2081 Vista Parkway, West Palm Beach, FL 33411 USA
| | - Ting Xia
- Mechanical Engineering, Northern Illinois University, 590 Garden Rd, DeKalb, IL 60115 USA
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16
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Roghani T, Zavieh MK, Rahimi A, Talebian S, Manshadi FD, Baghban AA, King N, Katzman W. The reliability and validity of a designed setup for the assessment of static back extensor force and endurance in older women with and without hyperkyphosis. Physiother Theory Pract 2018; 34:882-893. [PMID: 29368984 PMCID: PMC6320670 DOI: 10.1080/09593985.2018.1430878] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the intra-rater reliability and validity of a designed load cell setup for the measurement of back extensor muscle force and endurance. PARTICIPANTS The study sample included 19 older women with hyperkyphosis, mean age 67.0 ± 5.0 years, and 14 older women without hyperkyphosis, mean age 63.0 ± 6.0 years. METHODS Maximum back extensor force and endurance were measured in a sitting position with a designed load cell setup. Tests were performed by the same examiner on two separate days within a 72-hour interval. The intra-rater reliability of the measurements was analyzed using intraclass correlation coefficient (ICC), standard errors of measurement (SEM), and minimal detectable change (MDC). The validity of the setup was determined using Pearson correlation analysis and independent t-test. RESULTS Using our designed load cell, the values of ICC indicated very high reliability of force measurement (hyperkyphosis group: 0.96, normal group: 0.97) and high reliability of endurance measurement (hyperkyphosis group: 0.82, normal group: 0.89). For all tests, the values of SEM and MDC were low in both groups. A significant correlation between two documented forces (load cell force and target force) and significant differences in the muscle force and endurance among the two groups were found. CONCLUSION The measurements of static back muscle force and endurance are reliable and valid with our designed setup in older women with and without hyperkyphosis.
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Affiliation(s)
- Taybeh Roghani
- Department of Physiotherapy, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Minoo Khalkhali Zavieh
- Department of Physiotherapy, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Rahimi
- Department of Physiotherapy, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeed Talebian
- Department of Physiotherapy, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farideh Dehghan Manshadi
- Department of Physiotherapy, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alireza Akbarzadeh Baghban
- Proteomics Research Center, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nicole King
- Department of Physical Therapy and Rehabilitation Sciences, University of California, San Francisco, United Sates
| | - Wendy Katzman
- Department of Physical Therapy and Rehabilitation Sciences, University of California, San Francisco, United Sates
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Effects of Volume Training on Strength and Endurance of Back Muscles: A Randomized Controlled Trial. J Sport Rehabil 2018; 27:340-347. [PMID: 28513268 DOI: 10.1123/jsr.2016-0253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
CONTEXT Strength/resistance training volume has historically been supported in the American College of Sports Medicine recommendations. However, for the back muscles, exercise prescription related to the number of sets, such as single versus multiple, is not well established in the literature. OBJECTIVE The purpose of this study was to compare the effects of 2 training volumes on strength and endurance of back-extensor muscles in untrained young participants with regard to a repeated-measures design. DESIGN Randomized controlled trial. SETTING Laboratory of functional evaluation and human motor performance. PARTICIPANTS Forty-four untrained young participants (mean age = 21 y) were randomized into single-set (n = 14), multiple-set (MSG, n = 15), and untrained control (n = 15) groups. INTERVENTION The single-set group and MSG underwent a 10-week progressive resistance training program (2 d/wk) using a 45° Roman chair. MAIN OUTCOME MEASURES Back maximal strength (dynamometer) and isometric and dynamic endurance (time limit, trunk extension-flexion cycles, and electromyography muscle fatigue estimates). RESULTS The results showed differences between the MSG and control group for isometric endurance time (mean = 19.8 s; 95% confidence interval, -44.1 to 4.8), but without time intervention significance. Significant improvement after training (P < .05) was found predominantly during dynamic endurance (number of repetitions) for both the MSG (+61%) and single-set group (+26%) compared with preintervention, whereas the control group reported no benefit. There was no significant (P > .05) difference in either strength or electromyography estimates after training. CONCLUSIONS Both multiple and single volume training were efficient in promoting better back endurance during dynamic performance based on mechanical variables (time and number of repetitions).
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Mankovsky-Arnold T, Wideman TH, Thibault P, Larivière C, Rainville P, Sullivan MJL. Sensitivity to Movement-Evoked Pain and Multi-Site Pain are Associated with Work-Disability Following Whiplash Injury: A Cross-Sectional Study. JOURNAL OF OCCUPATIONAL REHABILITATION 2017; 27:413-421. [PMID: 27744640 DOI: 10.1007/s10926-016-9672-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objectives Previous research has shown that sensitivity to movement-evoked pain is associated with higher scores on self-report measures of disability in individuals who have sustained whiplash injuries. However, it remains unclear whether sensitivity to movement-evoked pain is associated with work-disability. The aim of the present study was to examine the relation between sensitivity to movement-evoked pain and occupational status in individuals receiving treatment for whiplash injury. Methods A sample of 105 individuals with whiplash injuries participated in a testing session where different measures of pain (i.e. spontaneous pain, multi-site pain, sensitivity to movement-evoked pain) were collected during the performance of a simulated occupational lifting task. Results Hierarchical logistic regression analysis revealed that the measures of multisite pain and sensitivity to movement-evoked pain made significant independent contributions to the prediction of work-disability. Discussion The findings suggest that including measures of multisite pain and sensitivity to movement evoked pain in assessment protocols has the potential to increase the value of pain assessments for the prediction of occupational disability associated with whiplash injury. Clinical and theoretical implications of the findings are addressed.
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Affiliation(s)
| | - Timothy H Wideman
- School of Physical and Occupational Therapy, McGill University, Montreal, Canada
| | - Pascal Thibault
- Department of Psychology, McGill University, Montreal, Canada
| | - Christian Larivière
- Occupational Health and Safety, Research Institute Robert-Sauvé, Montreal, Canada
| | - Pierre Rainville
- Département de stomatology, Université de Montréal, Montreal, Canada
| | - Michael J L Sullivan
- Recover Injury Research Centre, University of Queensland, 288 Herston Road, Level 7, Herston, QLD, 4029, Australia.
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Jubany J, Marina M, Angulo-Barroso R. Electromyographic and Kinematic Analysis of Trunk and Limb Muscles During a Holding Task in Individuals With Chronic Low Back Pain and Healthy Controls. PM R 2017; 9:1106-1116. [DOI: 10.1016/j.pmrj.2017.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 03/30/2017] [Accepted: 04/08/2017] [Indexed: 11/28/2022]
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Villafañe JH, Gobbo M, Peranzoni M, Naik G, Imperio G, Cleland JA, Negrini S. Validity and everyday clinical applicability of lumbar muscle fatigue assessment methods in patients with chronic non-specific low back pain: a systematic review. Disabil Rehabil 2016; 38:1859-71. [PMID: 26732899 DOI: 10.3109/09638288.2015.1107777] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PURPOSE This systematic literature review aimed at examining the validity and applicability in everyday clinical rehabilitation practise of methods for the assessment of back muscle fatiguability in patients with chronic non-specific low back pain (CNSLBP). METHODS Extensive research was performed in MEDLINE, Cumulative Index of Nursing and Allied Health Literature (CINAHL), Embase, Physiotherapy Evidence Database (PEDro) and Cochrane Central Register of Controlled Trials (CENTRAL) databases from their inception to September 2014. Potentially relevant articles were also manually looked for in the reference lists of the identified publications. Studies examining lumbar muscle fatigue in people with CNSLBP were selected. Two reviewers independently selected the articles, carried out the study quality assessment and extracted the results. A modified Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) scale was used to evaluate the scientific rigour of the selected works. RESULTS Twenty-four studies fulfilled the selection criteria and were included in the systematic review. We found conflicting data regarding the validity of methods used to examine back muscle fatigue. The Biering-Sorensen test, performed in conjunction with surface electromyography spectral analysis, turned out to be the most widely used and comparatively, the most optimal modality currently available to assess objective back muscle fatigue in daily clinical practise, even though critical limitations are discussed. CONCLUSIONS Future research should address the identification of an advanced method for lower back fatigue assessment in patients with CNSLBP which, eventually, might provide physical therapists with an objective and reliable test usable in everyday clinical practise. Implications for Rehabilitation Despite its limitations, the Biering-Sorensen test is currently the most used, convenient and easily available fatiguing test for lumbar muscles. To increase validity and reliability of the Biering-Sorensen test, concomitant activation of synergistic muscles should be taken into account. Pooled mean frequency and half-width of the spectrum are currently the most valid electromyographic parameters to assess fatigue in chronic non-specific low back pain. Body mass index, grading of pain and level of disability of the study population should be reported to enhance research quality.
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Affiliation(s)
| | - Massimiliano Gobbo
- b Department of Clinical and Experimental Sciences , University of Brescia , Brescia , Italy ;,c Laboratory of Neuromuscular Rehabilitation , Teresa Camplani Foundation - Domus Salutis Clinic , Brescia , Italy
| | | | - Ganesh Naik
- e Centre for Health Technologies (CHT), Faculty of Engineering & Information Technology, University of Technology , Sydney , Australia
| | | | - Joshua A Cleland
- d Department of Physical Therapy , Franklin Pierce University , Concord , NH , USA
| | - Stefano Negrini
- a IRCCS Don Gnocchi Foundation , Milan , Italy ;,b Department of Clinical and Experimental Sciences , University of Brescia , Brescia , Italy
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Back muscle fatigue of younger and older adults with and without chronic low back pain using two protocols: A case-control study. J Electromyogr Kinesiol 2015; 25:928-36. [DOI: 10.1016/j.jelekin.2015.10.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/24/2015] [Accepted: 10/07/2015] [Indexed: 12/18/2022] Open
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Kankaanpää M, Colier WN, Taimela S, Anders C, Airaksinen O, Kokko-Aro SM, Hänninen O. Back extensor muscle oxygenation and fatigability in healthy subjects and low back pain patients during dynamic back extension exertion. ACTA ACUST UNITED AC 2014; 12:267-73. [PMID: 16289763 DOI: 10.1016/j.pathophys.2005.09.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2005] [Revised: 09/12/2005] [Accepted: 09/13/2005] [Indexed: 10/25/2022]
Abstract
The purpose of this study was to assess if chronic low back pain patients have impaired paraspinal muscle O2 turnover and endurance capacity as compared to healthy control subjects during dynamic exercise. Middle-aged healthy male subjects (n = 12, control) and male patients with chronic low back pain (n = 17, CLBP) participated in the study. L4–L5 level paraspinal muscle fatigue was objectively assessed during earlier validated 90 s dynamic back endurance test (spectral EMG, MPFslope). Also EMG amplitude (EMGamplitude) and initial MPF (MPFinitial) were assessed from the initial 5 s of the endurance contraction. Simultaneously near infrared spectroscopy (NIRS) was used for quantitative measurement of local L4–L5 paraspinal muscle O2 consumption. Subcutaneous tissue thickness (ATT) was measured from the EMG and NIRS recording sites. The results indicated that control and CLBP groups were compatible as regarding anthropometric variables, paraspinal muscle activation levels (EMGamplitude), initial MPF (MPFinitial) and ATT. When the ATT was used as a covariate in the ANOVA analysis, CLBP group did not show significantly greater paraspinal muscle fatigability (right MPFslope – 12.2 ± 10.7%/min, left right MPFslope – 12.6 ± 13.3%/min) or O2 consumption (right NIRSslope – 52.8 ± 79.6 μM/l/s) as compared to healthy controls (right MPFslope – 11.9 ± 7.6%/min, left MPFslope – 12.7 ± 8.6%/min, right NIRSslope – 53.7 ± 95.2 μM/l/s). As a conclusion, these CLBP male patients did not show any impaired rate of paraspinal muscle oxygen consumption or excessive paraspinal muscle fatigability during dynamic exercise as compared with healthy controls. Subcutaneous tissue thickness has a strong influence on the NIRS and EMG amplitude measurements and, if unchecked, it could result in the false interpretation of the results.
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Affiliation(s)
- Markku Kankaanpää
- Department of Physical Medicine and Rehabilitation, Kuopio University Hospital, P.O. Box 1777, 70211 Kuopio, Finland.
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Kienbacher T, Habenicht R, Starek C, Mair P, Wolf M, Paul B, Riegler S, Kollmitzer J, Ebenbichler G. The potential use of spectral electromyographic fatigue as a screening and outcome monitoring tool of sarcopenic back muscle alterations. J Neuroeng Rehabil 2014; 11:106. [PMID: 24985941 PMCID: PMC4105890 DOI: 10.1186/1743-0003-11-106] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 06/24/2014] [Indexed: 01/01/2023] Open
Abstract
Background To examine whether or not median frequency surface electromyographic (MF-EMG) back muscle fatigue monitoring would be able to identify alterations in back muscle function in elderly muscles, if a protocol was used that allowed optimum standardization of the processes underlying electromyographic fatigue, and whether these tests were reliable from day to day. Methods A total of 42 older (21 females; 67 (±10.5) years old) and 44 younger persons (19 females; 33 (±10) years) performed maximum isometric back extensions which were followed by one 30 s lasting 80% submaximum extension. Participants were seated on a dynamometer with their trunks 30° anteflexed, and they repeated all tests after 1-2 days and 6 weeks. SEMG was recorded bilaterally from the L1 (iliocostalis lumborum), L2 (longissimus), and L5 (multifidus) recording sites. Outcome variables included maximum back extension torque, initial MF-EMG (IMF-EMG), MF-EMG slope declines, and individual MF-EMG muscular imbalance scores. Two-factorial ANOVAs served to examine the age and gender-specific effects, and models from Generalizability Theory (G-Theory) were used for assessing retest-reliability. Results Maximum back extension moment was non-significantly smaller in elders. IMF-EMG was overall higher in elders, with significant differences at the L5 recordings sites. In the elderly, MF-EMG fatigue declines were significantly smaller in L5, in the recording with the most negative slope, or if the slope of all electrodes was considered. Retest reliability was unanimous in young and older persons. ICC-type measurements from G-Theory of both the IMF and the fatigue slopes ranged from 0.7 to 0.85. Absolute SEM values were found clinically acceptable for the IMF-EMG, but relatively high for the fatigue slope declines. Conclusions The MF-EMG fatigue method is able to elucidate alterations of aging back muscles. This method, thus, might be suggested as a potential biomarker to objectively identify persons at risk for sarcopenia. Considering the clinical relevance of the IMF-EMG relative to the MF-EMG slope declines, spectral EMG may also be used as an outcome monitoring tool in elderly populations.
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Affiliation(s)
- Thomas Kienbacher
- Karl-Landsteiner-Institute for outpatient rehabilitation research, Porschestraße 29, Vienna A-1230, Austria.
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Steele J, Bruce-Low S, Smith D. A reappraisal of the deconditioning hypothesis in low back pain: review of evidence from a triumvirate of research methods on specific lumbar extensor deconditioning. Curr Med Res Opin 2014; 30:865-911. [PMID: 24328452 DOI: 10.1185/03007995.2013.875465] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE 'Disuse' and 'Deconditioning' in relation to low back pain (LBP) are terms often used interchangeably. Discussions of 'disuse' refer to general physical inactivity, which evidence suggests does not differ between symptomatic and asymptomatic persons. 'Deconditioning' refers to a decrease in function, commonly both cardiovascular/aerobic fitness and muscular strength/endurance, again noting little difference. However, examination of decreased function relating specifically to lumbar extensor musculature deconditioning has yet to be examined, corroborating all possible methods. Thus, this review attempts to reappraise the deconditioning hypothesis in LBP, specifically considering lumbar extensor deconditioning. METHODS A literature review was conducted examining both cross-sectional and prospective data on specific lumbar extensor deconditioning and LBP. A narrative approach and 'snowballing' style literature search was used involving initial use of PubMed and Google Scholar databases searching up to December 2012. Included were studies utilizing the following three research methods, allowing specific induction of the role of such deconditioning; (1) strength/endurance testing of the isolated lumbar extensor musculature, (2) imaging and histochemical examination of the lumbar extensor musculature, and (3) fatigue testing of the lumbar extensor musculature using electromyography. RESULTS/FINDINGS Despite issues interpreting individual studies due to methods, the majority of evidence suggests LBP is associated with decreased strength/endurance, atrophy, and excessive fatigability of the lumbar extensors. Prospective studies also suggest lumbar extensor deconditioning may be a common risk factor predicting acute low back injury and LBP. CONCLUSIONS The hypothesis of specific lumbar extensor deconditioning as being a causal factor in LBP is presently well supported. It is by no means the only causative factor and further research should more rigorously test this hypothesis addressing the methodological issues highlighted regarding previous studies. However, its role suggests specific exercise may be a worthwhile preventative and rehabilitative approach.
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Affiliation(s)
- James Steele
- Southampton Solent University , Southampton, Hampshire , UK
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25
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Tutzschke R, Anders C, Borys C, Nodop S, Rößler O, Strauß B, Scholle HC. [Evaluation of the German new back school: muscular physiological characteristics]. Schmerz 2014; 28:166-74. [PMID: 24643752 DOI: 10.1007/s00482-014-1390-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND According to the biopsychosocial approach of the German new back school the core objectives are sustainable improvement of physical and psychosocial health resources. Subjects with non-specific low back pain were investigated to evaluate the desired physical effects. METHODS Coordinative and postural motor exercises were evaluated by means of surface electromyography (EMG). Applying a modified waiting group design 56 participants were examined 3 months before the start, at the beginning and at the end of the new back school program as well as 3 and 12 months after completion and the results were compared to a healthy control group (n=56) matched for age and body mass index (BMI). RESULTS Initially significant group differences were found in 18 % of all statistical calculations of the static and 6 % of the dynamic test situations. Considering the trunk muscles the most frequent significant alterations from normative data were found in the lumbar multifidus muscle (static tests 29 % and dynamic tests 7 %). No relevant changes in the number of statistical results could be detected directly after completion of the new back school program. Nevertheless, at 12 months follow-up the number of significant differences to the normative data of the control group dropped by one third to 12 % of all calculations with static loads. CONCLUSION The adjustment effects at 12 months follow-up indicate a delayed positive influence of the new back school program on muscular physiological parameters. Individuals with chronic non-specific back pain showed a long-term profit from participation in the new back school program due to the initiated orientation to a modified more active lifestyle.
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Affiliation(s)
- R Tutzschke
- Klinik für Unfall-, Hand- und Wiederherstellungschirurgie, FB Motorik, Pathophysiologie und Biomechanik, Universitätsklinikum, Friedrich-Schiller-Universität Jena, Bachstr. 18, 07740, Jena, Deutschland,
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del Pozo-Cruz B, Gusi N, Adsuar JC, del Pozo-Cruz J, Parraca JA, Hernandez-Mocholí M. Musculoskeletal fitness and health-related quality of life characteristics among sedentary office workers affected by sub-acute, non-specific low back pain: a cross-sectional study. Physiotherapy 2012; 99:194-200. [PMID: 23219627 DOI: 10.1016/j.physio.2012.06.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 06/07/2012] [Indexed: 10/27/2022]
Abstract
OBJECTIVES To establish the level of musculoskeletal fitness and health-related quality of life (HRQoL) in sedentary office workers with sub-acute, non-specific low back pain, and compare the results with reference data for healthy sedentary office workers. DESIGN Cross-sectional study. SETTING Occupational secondary prevention setting. PARTICIPANTS One-hundred and ninety sedentary office workers: 118 suffering from sub-acute, non-specific low back pain (47 men and 71 women) and 72 age-matched healthy controls (30 men and 42 women). MAIN OUTCOME MEASURES Participants were assessed using a musculoskeletal fitness battery (sit-and-reach test, hand grip strength, lumbar and abdominal trunk muscle endurance, and back scratch test), the EuroQol-5D-3L, Oswestry Disability Questionnaire, and Roland Morris Disability Questionnaire. Data for both genders and conditions were compared. RESULTS Subjects with low back pain achieved lower scores in most of the fitness tests compared with healthy, age-matched controls. Trunk flexor and extensor endurance demonstrated the greatest difference in both men {flexion: median difference 59 [95% confidence interval (CI) 26 to 90]seconds; extension: median difference 24 [95% CI 20 to 68]} and women [flexion: median difference 59 (95% CI 5 to 85.50)seconds; extension: median difference 41 (95% CI 30 to 55)seconds]. Differences in HRQoL were also demonstrated between groups for both men and women, with the exception of the pain/discomfort dimension in women. CONCLUSIONS Sedentary office workers with sub-acute, non-specific low back pain had lower musculoskeletal fitness than healthy, age-matched controls, with the main difference found in endurance of the trunk muscles. HRQoL was also lower in workers with low back pain.
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Affiliation(s)
- B del Pozo-Cruz
- Faculty of Sports Science, University of Extremadura, Caceres, Spain.
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Beneck GJ, Baker LL, Kulig K. Spectral analysis of EMG using intramuscular electrodes reveals non-linear fatigability characteristics in persons with chronic low back pain. J Electromyogr Kinesiol 2012; 23:70-7. [PMID: 22883392 DOI: 10.1016/j.jelekin.2012.07.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 06/22/2012] [Accepted: 07/02/2012] [Indexed: 10/28/2022] Open
Abstract
Greater fatigability across lumbar extensors has been reported in persons with chronic low back pain (LBP), however, extensor atrophy tends to be local to the site of pain. Therefore, specific ultrasound guided local and remote intramuscular electromyographic recordings were undertaken during an isometric horizontal trunk hold in two carefully matched cohorts; persons with and without LBP. The test was performed to self-determined maximal hold time, and the control group held the horizontal position longer (P < 0.001). A power spectral analysis was performed to calculate the normalized median frequency (NMF) slope for both the first and last 30s of the fatigue test due to the group difference in hold times. There were no significant group differences in NMF slope at the first 30s of testing (P = 0.650). The NMF slope for the first and last 30s was not different in healthy subjects (P = 0.688), but was different in persons with LBP, illustrated by shallowing of the slope at the last 30s of the test (P = 0.008). A between muscle comparison in the LBP group showed greater non-linear behavior in the deep multifidus (painful region) in contrast to T10 longissimus thoracis (nonpainful region) (P = 0.013). Possible explanations for these findings are discussed.
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Affiliation(s)
- George J Beneck
- Department of Physical Therapy, California State University Long Beach, Long Beach, CA 90840, USA.
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Coleman JL, Straker LM, Campbell A, Izumi H, Smith A. Biering-Sorensen test performance of Japanese young males: comparison with other ethnicities and relationship to electromyography, near-infrared spectroscopy and exertion ratings. ERGONOMICS 2011; 54:636-655. [PMID: 21770751 DOI: 10.1080/00140139.2011.586062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Back muscle endurance is a predictor of future low back pain and is commonly assessed using the Biering-Sorensen Test (BST). Differences exist between ethnic groups that may affect the performance and interpretation of the BST and should be investigated. This study's aim was to explore objective and subjective measures of the BST in a Japanese group in comparison with previous studies in other ethnic groups. A total of 27 young male Japanese students performed the BST while measures of muscle fatigue were collected. The mean BST time (152.7 (32.5) s) was greater than the median of the reported mean times in other ethnic groups over the previous decade (128.6 s). Objective measures indicated that the Japanese subjects' lumbar muscles were as fatigued as those of previous studies, while subjective measures appear to indicate that subjects under-reported exertion. The better performance of the Japanese subjects in the BST may reflect physical, psychosocial and lifestyle differences related to ethnicity. STATEMENT OF RELEVANCE: Ergonomics research and practice needs to be applicable to different ethnic groups. Despite the substantial body of evidence on back muscle endurance and indications of potential ethnicity related differences, this had not been previously investigated. These results help ergonomists to interpret physical ergonomics evidence in a multi-ethnic world.
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Affiliation(s)
- Jemma L Coleman
- School of Physiotherapy, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
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Dedering A, Gnospelius A, Elfving B. Reliability of measurements of endurance time, electromyographic fatigue and recovery, and associations to activity limitations, in patients with lumbar disc herniation. PHYSIOTHERAPY RESEARCH INTERNATIONAL 2011; 15:189-98. [PMID: 20183858 DOI: 10.1002/pri.457] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Electromyographic (EMG) spectral parameters and endurance tests for back muscles have long been used to estimate low-back muscle fatigue. PURPOSE The present purpose was to evaluate the test-retest reliability of a fatigue-testing protocol and to investigate associations between activity limitations and fatigue in patients with lumbar disc herniation. METHODS To evaluate the reliability, endurance time, EMG spectral parameters and ratings of lumbar muscle fatigue and back pain were measured three times in 15 patients with lumbar disc herniation. The patients performed a modified Sørensen test with concurrent recordings of electromyography from the lumbar muscles at four recording sites. Ratings of their perceived fatigue and pain on a Borg scale were collected simultaneously. Recovery over five minutes was recorded. Questionnaires about activity, participation, self-efficacy and health were also used. RESULTS Endurance time had an ICC of 0.85 indicating good reliability. Initial, end and median frequency recovery had intraclass correlation coefficients (ICCs) over 0.6 that is acceptable but with large standard errors of measurement. The median frequency slopes for the four recording sites had ICCs of 0.19-0.48. Agreement coefficients for the Borg ratings ranged between 0.78 and 0.97. Moderate correlation was found between activity limitations and endurance time. CONCLUSIONS Endurance time measurement and Borg ratings may be recommended for evaluating intervention both with groups of patients, i.e. for research purposes, and for individuals. The median frequency parameters may be recommended for groups only. The study shows the importance of establishing the reliability of the patient category if the results are to be used to evaluate intervention.
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Affiliation(s)
- Asa Dedering
- Department of Physical Therapy, Karolinska University Hospital, Stockholm, Sweden.
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Thomas JS, Ross AJ, Russ DW, Clark BC. Time to task failure of trunk extensor muscles differs with load type. J Mot Behav 2011; 43:27-9. [PMID: 21186461 DOI: 10.1080/00222895.2010.530305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Time to task failure of trunk extensor muscles during seated submaximal isometric exertions was assessed in 18 healthy participants using 2 different load types. One required supporting an inertial load (position-matching task) whereas the 2nd required maintaining an equivalent torque against a rigid restraint (force-matching task). Time to task failure was significantly longer for position-matching tasks compared to the force-matching tasks. This finding is opposite to that reported for the appendicular muscles. A subset of 4 individuals completed a 2nd experiment to test the time to task failure of the elbow flexors in the position- and force-matching tasks. Time to task failure of the elbow flexors was significantly longer for the force-matching tasks compared to position matching. Thus, the same population shows that the effects of load type on time to task failure are opposite for the appendicular and axial muscles. This could be an important issue in understanding the mechanisms of task failure, and the endurance capacity of the trunk extensor muscles.
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Affiliation(s)
- James S Thomas
- School of Rehabilitation and Communication Sciences, Division of Physical Therapy, Ohio University, Athens 45701, USA.
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Is muscle co-activation a predisposing factor for low back pain development during standing? A multifactorial approach for early identification of at-risk individuals. J Electromyogr Kinesiol 2009; 20:256-63. [PMID: 19467607 DOI: 10.1016/j.jelekin.2009.04.009] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 04/10/2009] [Accepted: 04/28/2009] [Indexed: 01/01/2023] Open
Abstract
PURPOSE AND SCOPE Low back pain development has been associated with static standing postures in occupational settings. Previous work has demonstrated gluteus muscle co-activation as a predominant pattern in previously asymptomatic individuals who develop low back pain when exposed to 2-h of standing. The purpose of this work was to investigate muscle co-activation as a predisposing factor in low back pain development while including a multifactorial approach of clinical assessment tools and psychosocial assessments to identify individuals who are at risk for pain development during standing. RESULTS Forty percent of participants developed low back pain during the 2-h of standing. Pain developers demonstrated bilateral gluteus medius and trunk flexor-extensor muscle co-activation prior to reports of pain development. Pain developers and non-pain developers demonstrated markedly different patterns of muscle activation during the 2-h of standing. A novel screening test of active hip abduction was the only clinical assessment tool that predicted pain development. CONCLUSIONS Gluteus medius and trunk muscle co-activation appears to be a predisposing rather than adaptive factor in low back pain development during standing. A combination of a positive active hip abduction test and presence of muscle co-activation during standing may be useful for early identification of at-risk individuals.
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Lafond D, Champagne A, Descarreaux M, Dubois JD, Prado JM, Duarte M. Postural control during prolonged standing in persons with chronic low back pain. Gait Posture 2009; 29:421-7. [PMID: 19084411 DOI: 10.1016/j.gaitpost.2008.10.064] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Revised: 10/24/2008] [Accepted: 10/29/2008] [Indexed: 02/02/2023]
Abstract
Prolonged standing has been associated with the onset of low back pain symptoms in working populations. So far, it is unknown how individuals with chronic low back pain (CLBP) behave during prolonged unconstrained standing (PS). The aim of the present study was to analyze the control of posture by subjects with CLBP during PS in comparison to matched healthy adults. The center of pressure (COP) position of 12 CLBP subjects and 12 matched healthy controls was recorded in prolonged standing (30min) and quiet stance tasks (60s) on a force plate. The number and amplitude of COP patterns, the root mean square (RMS), speed, and frequency of COP sway were analyzed. Statistical analyses showed that CLBP subjects produced less postural changes in the antero-posterior direction with decreased postural sway during the prolonged standing task in comparison to the healthy group. Only CLBP subjects were influenced by the prolonged standing task, as demonstrated by their increased COP RMS, COP speed and COP frequency in the quiet standing trial after the prolonged standing task in comparison to the pre-PS trial. The present study provides additional evidence that individuals with CLBP might have altered sensory-motor function. Their inability to generate responses similar to those of healthy subjects during prolonged standing may contribute to CLBP persistence or an increase risk of recurrent back pain episodes. Moreover, quantification of postural changes during prolonged standing could be useful to identify CLBP subjects prone to postural control deficits.
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Affiliation(s)
- Danik Lafond
- Département des sciences de l'activité physique, Université du Québec à Trois-Rivières, Québec, Canada.
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Licka T, Frey A, Peham C. Electromyographic activity of the longissimus dorsi muscles in horses when walking on a treadmill. Vet J 2009; 180:71-6. [DOI: 10.1016/j.tvjl.2007.11.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2006] [Revised: 10/29/2007] [Accepted: 11/02/2007] [Indexed: 11/15/2022]
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Back and hip extensor muscles fatigue in healthy subjects: task-dependency effect of two variants of the Sorensen test. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2008; 17:1721-6. [PMID: 18813961 DOI: 10.1007/s00586-008-0782-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Revised: 06/16/2008] [Accepted: 09/02/2008] [Indexed: 10/21/2022]
Abstract
Paraspinal muscle fatigability during various trunk extension tests has been widely investigated by electromyography (EMG), and its task-dependency is established recently. Hip extensor muscle fatigability during the Sorensen test has been reported. The aim of the present experiments was to evaluate the task-dependency of back and hip extensor muscle fatigue during two variants of the Sorensen test. We hypothesized that the rate of muscular fatigue of the hip and back extensor muscles varies according to the test position. Twenty healthy young males with no history of low back pain volunteered to participate in this cross-sectional study. They were asked to perform two body weight-dependent isometric back extension tests (S1 = Sorensen test; S2 = modified Sorensen on a 45 degrees Roman chair). Surface EMG activity of the paraspinal muscles (T10 and L5 levels) and hip extensor muscles (gluteus maximus; biceps femoris) was recorded, and muscular fatigue was assessed through power spectral analysis of the EMG data by calculating the rate of median power frequency change. We observed hip extensor muscle fatigue simultaneously with paraspinal muscle fatigue during both Sorensen variants. However, only L5 level EMG fatigue indices showed a task-dependency effect between S1 and S2. Hip extensor muscles appear to contribute to load sharing of the upper body mass during both Sorensen variants, but to a different extent because L5 level fatigue differs between the Sorensen variants. Our findings suggest that task-dependency has to be considered when EMG variables are compared between two types of lumbar muscle-fatiguing tasks.
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Roman-Liu D, Konarska M. Characteristics of power spectrum density function of EMG during muscle contraction below 30%MVC. J Electromyogr Kinesiol 2008; 19:864-74. [PMID: 18590966 DOI: 10.1016/j.jelekin.2008.05.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2007] [Revised: 05/15/2008] [Accepted: 05/17/2008] [Indexed: 10/21/2022] Open
Abstract
The aim of the study was to quantify changes in PSDF frequency bands of the EMG signal and EMG parameters such as MF, MPF and zero crossing, with an increase in the level of muscle contractions in the range from 0.5% to 30% RMS(max) and to determine the frequency bands with the lowest dependency on RMS level so that this could be used in investigating muscle fatigue. Sixteen men, aged from 23 to 33 years old (mean 26.1), who participated in the study performed two force exertion tests. Fragments of EMG which corresponded to the levels of muscle contraction of 0.5%, 1%, 2.5%, 5%, 10%, 15%, 20%, 25%, 30% RMS(max) registered from left and right trapezius pars descendents (TP) and left and right extensor digitorum superficialis (ED) muscles were selected for analysis. The analysis included changes in standard parameters of the EMG signal and changes in PSDF frequency bands, which occurred across muscle contraction levels. To analyze changes in PSDF across the level of muscle contraction, the spectrum was divided into six frequency bandwidths. The analysis of parameters focused on the differences in those parameters between the analyzed muscles, at different levels of muscle contraction. The study revealed that, at muscle contraction levels below 5% RMSmax, contraction level influences standard parameters of the EMG signal and that at such levels of muscle contraction every change in muscle contraction level (recruitment of additional MUs) is reflected in PSDF. The frequency band with the lowest dependency on contraction level was 76-140 Hz for which in both muscles no contraction level effect was detected for contraction levels above 5% RMS(max). The reproducibility of the results was very high, since the observations in of the left and right muscles were almost equal. The other factor, which strongly influences PSDF of the EMG signal, is probably the examined muscle structure (muscle morphology, size, function, subcutaneous layer, cross talk). It seems that low frequency bands up to 25 Hz are especially feasible for type of muscle.
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Affiliation(s)
- Danuta Roman-Liu
- Central Institute for Labour Protection - National, Research Institute, ul. Czerniakowska 16, 00-701 Warsaw, Poland.
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Kawano MM, Souza RBD, Oliveira BIRD, Menacho MO, Cardoso APRG, Nakamura FY, Cardoso JR. Comparação da fadiga eletromiográfica dos músculos paraespinhais e da cinemática angular da coluna entre indivíduos com e sem dor lombar. REV BRAS MED ESPORTE 2008. [DOI: 10.1590/s1517-86922008000300010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Indivíduos com dor lombar têm redução na força e na resistência dos músculos paraespinhais. A avaliação da fadiga e da resistência dos músculos paraespinhais é importante, uma vez que tem sido reportado que indivíduos com lombalgia desenvolvem um déficit no condicionamento físico que influencia na força e na função do tronco. Além disso, ainda é incerto a relação da fadiga dos paraespinhais e o ângulo de flexão anterior de tronco. Os objetivos deste estudo foram comparar a fadiga em indivíduos com e sem dor lombar e correlacionar a fadiga com o ângulo de flexão anterior de tronco. O grupo lombalgia foi composto por dez indivíduos com diagnóstico médico exclusivo de lombalgia. O grupo controle foi composto por dez indivíduos que possuíam características físicas semelhantes. Inicialmente avaliou-se a flexão anterior de tronco dos indivíduos pelo método angular de Whistance. A fadiga dos músculos paraespinhais foi avaliada nas alturas de L1 e L5 por meio da eletromiografia de superfície em duas cargas: 50 e 75% da contração isométrica voluntária máxima. Os resultados do estudo indicaram que o grupo lombalgia apresentou menor força durante os testes de contração isométrica voluntária máxima (P < 0,004). Embora o grupo lombalgia tenha apresentado maior valor de fadiga, não houve diferença estatisticamente significante entre os dois grupos para as alturas de L1 e L5 nas duas cargas. As correlações entre a fadiga e o ângulo de flexão anterior de tronco mostraram-se de fracas a moderadas (valores entre r = -0,58 a 0,51). Estes achados indicam que ambos os grupos fadigam, entretanto o grupo lombalgia apresentou maior fadiga. Além disso, não se pode predizer a fadiga por meio do ângulo de flexão anterior de tronco.
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Affiliation(s)
| | | | | | | | | | | | - Jefferson Rosa Cardoso
- Universidade Estadual de Londrina; Universidade Estadual de Londrina; Universidade Estadual de Londrina
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Coorevits P, Danneels L, Cambier D, Ramon H, Druyts H, Stefan Karlsson J, Moor GD, Vanderstraeten G. Correlations between short-time Fourier- and continuous wavelet transforms in the analysis of localized back and hip muscle fatigue during isometric contractions. J Electromyogr Kinesiol 2008; 18:637-44. [PMID: 18396411 DOI: 10.1016/j.jelekin.2007.01.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2006] [Revised: 01/17/2007] [Accepted: 01/18/2007] [Indexed: 11/17/2022] Open
Abstract
The aims of the current study were to examine the stationarities of surface electromyographic (EMG) signals obtained from eight bilateral back and hip muscles during a modified Biering-Sørensen test, and to investigate whether short-time Fourier (STFT) and continuous wavelet transforms (CWT) provided similar information with regard to EMG spectral parameters in the analysis of localized muscle fatigue. Twenty healthy subjects participated in the study after giving their informed consent. Reverse arrangement tests showed that 91.6% of the EMG signal epochs demonstrated no significant trends (all p>0.05), meaning 91.6% of the EMG signal epochs could be considered as stationary signals. Pearson correlation coefficients showed that STFT and CWT in general provide similar information with respect to the EMG spectral variables during isometric back extensions, and as a consequence STFT can still be used.
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Affiliation(s)
- Pascal Coorevits
- Department of Medical Informatics and Statistics, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium.
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Changes in the flexion relaxation response induced by lumbar muscle fatigue. BMC Musculoskelet Disord 2008; 9:10. [PMID: 18218087 PMCID: PMC2259346 DOI: 10.1186/1471-2474-9-10] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2007] [Accepted: 01/24/2008] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The flexion relaxation phenomenon (FRP) is an interesting model to study the modulation of lumbar stability. Previous investigations have explored the effect of load, angular velocity and posture on this particular response. However, the influence of muscular fatigue on FRP parameters has not been thoroughly examined. The objective of the study is to identify the effect of erector spinae (ES) muscle fatigue and spine loading on myoelectric silence onset and cessation in healthy individuals during a flexion-extension task. METHODS Twenty healthy subjects participated in this study and performed blocks of 3 complete trunk flexions under 4 different experimental conditions: no fatigue/no load (1), no fatigue/load (2), fatigue/no load(3), and fatigue/load (4). Fatigue was induced according to the Sorenson protocol, and electromyographic (EMG) power spectral analysis confirmed that muscular fatigue was adequate in each subject. Trunk and pelvis angles and surface EMG of the ES L2 and L5 were recorded during a flexion-extension task. Trunk flexion angle corresponding to the onset and cessation of myoelectric silence was then compared across the different experimental conditions using 2 x 2 repeated-measures ANOVA. RESULTS Onset of myoelectric silence during the flexion motion appeared earlier after the fatigue task. Additionally, the cessation of myoelectric silence was observed later during the extension after the fatigue task. Statistical analysis also yielded a main effect of load, indicating a persistence of ES myoelectric activity in flexion during the load condition. CONCLUSION The results of this study suggest that the presence of fatigue of the ES muscles modifies the FRP. Superficial back muscle fatigue seems to induce a shift in load-sharing towards passive stabilizing structures. The loss of muscle contribution together with or without laxity in the viscoelastic tissues may have a substantial impact on post fatigue stability.
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Schellenberg KL, Lang JM, Chan KM, Burnham RS. A clinical tool for office assessment of lumbar spine stabilization endurance: prone and supine bridge maneuvers. Am J Phys Med Rehabil 2007; 86:380-386. [PMID: 17303961 DOI: 10.1097/phm.0b013e318032156a] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE : To assess the validity and reliability of an office-based surrogate measure of lumbar spine-stabilization endurance capability; to establish norms and reliability in an asymptomatic group; and to compare their measures with those from a group of chronic mechanical low-back pain patients. DESIGN : Eight healthy subjects participated in the tool-validation portion of the study that consisted of surface electromyographic (EMG) measurements of core muscle activation during prone and supine bridging. Subsequently, normative and test-retest reliability measures of prone and supine bridging duration were recorded from 43 subjects without back pain and were compared with those of 32 subjects with chronic mechanical low-back pain. RESULTS : Surface EMG indicated significantly preferential activation of anterior core muscles during prone bridging and posterior core muscles during supine bridging. Mean bridge durations for subjects without back pain were 72.5 +/- 32.6 (mean +/- SD) secs in prone and 170.4 +/- 42.5 secs in supine. They were significantly less in subjects with back pain: 28.3 +/- 26.8 secs in prone and 76.7 +/- 48.9 secs in supine. Test-retest reliability using Pearson's correlation for prone and supine bridging was 0.78 and 0.84, respectively. CONCLUSIONS : Bridging maneuvers seem to be practical, reliable, and valid methods of reflecting lumbar spine-stabilization endurance capability. Prone bridging preferentially challenges core flexors, whereas supine bridging recruits primarily the core extensors; both are compromised in patients with low-back pain.
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