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Published in: BMC Musculoskeletal Disorders 1/2011

Open Access 01-12-2011 | Study protocol

Effectiveness of anodal transcranial direct current stimulation in patients with chronic low back pain: Design, method and protocol for a randomised controlled trial

Authors: Kerstin Luedtke, Alison Rushton, Christine Wright, Tim P Juergens, Gerd Mueller, Arne May

Published in: BMC Musculoskeletal Disorders | Issue 1/2011

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Abstract

Background

Electrical stimulation of central nervous system areas with surgically implanted stimulators has been shown to result in pain relief. To avoid the risks and side effects of surgery, transcranial direct current stimulation is an option to electrically stimulate the motor cortex through the skull. Previous research has shown that transcranial direct current stimulation relieves pain in patients with fibromyalgia, chronic neuropathic pain and chronic pelvic pain. Evidence indicates that the method is pain free, safe and inexpensive.

Methods/Design

A randomised controlled trial has been designed to evaluate the effect of transcranial direct current stimulation over the motor cortex for pain reduction in patients with chronic low back pain. It will also investigate whether transcranial direct current stimulation as a prior treatment enhances the symptom reduction achieved by a cognitive-behavioural group intervention. Participants will be randomised to receive a series of 5 days of transcranial direct current stimulation (2 mA, 20 mins) or 20 mins of sham stimulation; followed by a cognitive-behavioural group programme. The primary outcome parameters will measure pain (Visual Analog Scale) and disability (Oswestry Disability Index). Secondary outcome parameters will include the Fear Avoidance Beliefs Questionnaire, the Funktionsfragebogen Hannover (perceived function), Hospital Anxiety Depression Scale, bothersomeness and Health Related Quality of Life (SF 36), as well as Patient-Perceived Satisfactory Improvement. Assessments will take place immediately prior to the first application of transcranial direct current stimulation or sham, after 5 consecutive days of stimulation, immediately after the cognitive-behavioural group programme and at 4 weeks, 12 weeks and 24 weeks follow-up.

Discussion

This trial will help to determine, whether transcranial direct current stimulation is an effective treatment for patients with chronic low back pain and whether it can further enhance the effects of a cognitive behavioural pain management programme. Trial registration: Current Controlled Trials ISRCTN89874874.
Appendix
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Literature
1.
go back to reference Juniper M, Le TK, Mladsi D: The epidemiology, economic burden, and pharmacological treatment of chronic low back pain in France, Germany, Italy, Spain and the UK: a literature-based review. Expert Opin Pharmacother. 2009, 10 (16): 2581-2592. 10.1517/14656560903304063.CrossRefPubMed Juniper M, Le TK, Mladsi D: The epidemiology, economic burden, and pharmacological treatment of chronic low back pain in France, Germany, Italy, Spain and the UK: a literature-based review. Expert Opin Pharmacother. 2009, 10 (16): 2581-2592. 10.1517/14656560903304063.CrossRefPubMed
2.
go back to reference Wenig CM, Schmidt CO, Kohlmann T, Schweikert B: Costs of back pain in Germany. Eur J Pain. 2009, 13 (3): 280-286. 10.1016/j.ejpain.2008.04.005.CrossRefPubMed Wenig CM, Schmidt CO, Kohlmann T, Schweikert B: Costs of back pain in Germany. Eur J Pain. 2009, 13 (3): 280-286. 10.1016/j.ejpain.2008.04.005.CrossRefPubMed
3.
go back to reference Apkarian AV, Sosa Y, Sonty S, Levy RM, Harden RN, Parrish TB, Gitelman DR: Chronic back pain is associated with decreased prefrontal and thalamic gray matter density. J Neurosci. 2004, 24 (46): 10410-10415. 10.1523/JNEUROSCI.2541-04.2004.CrossRefPubMed Apkarian AV, Sosa Y, Sonty S, Levy RM, Harden RN, Parrish TB, Gitelman DR: Chronic back pain is associated with decreased prefrontal and thalamic gray matter density. J Neurosci. 2004, 24 (46): 10410-10415. 10.1523/JNEUROSCI.2541-04.2004.CrossRefPubMed
4.
go back to reference Schmidt-Wilcke T, Leinisch E, Ganssbauer S, Draganski B, Bogdahn U, Altmeppen J, May A: Affective components and intensity of pain correlate with structural differences in gray matter in chronic back pain patients. Pain. 2006, 125 (1-2): 89-97. 10.1016/j.pain.2006.05.004.CrossRefPubMed Schmidt-Wilcke T, Leinisch E, Ganssbauer S, Draganski B, Bogdahn U, Altmeppen J, May A: Affective components and intensity of pain correlate with structural differences in gray matter in chronic back pain patients. Pain. 2006, 125 (1-2): 89-97. 10.1016/j.pain.2006.05.004.CrossRefPubMed
5.
go back to reference Flor H, Diers M, Birbaumer N: Peripheral and electrocortical responses to painful and non-painful stimulation in chronic pain patients, tension headache patients and healthy controls. Neurosci Lett. 1997, 224 (1): 5-8. 10.1016/S0304-3940(97)13441-3.CrossRefPubMed Flor H, Diers M, Birbaumer N: Peripheral and electrocortical responses to painful and non-painful stimulation in chronic pain patients, tension headache patients and healthy controls. Neurosci Lett. 1997, 224 (1): 5-8. 10.1016/S0304-3940(97)13441-3.CrossRefPubMed
6.
go back to reference Flor H, Diers M: Sensorimotor training and cortical reorganization. NeuroRehabilitation. 2009, 25 (1): 19-27.PubMed Flor H, Diers M: Sensorimotor training and cortical reorganization. NeuroRehabilitation. 2009, 25 (1): 19-27.PubMed
7.
go back to reference Rodriguez-Raecke R, Niemeier A, Ihle K, Ruether W, May A: Brain gray matter decrease in chronic pain is the consequence and not the cause of pain. J Neurosci. 2009, 29 (44): 13746-13750. 10.1523/JNEUROSCI.3687-09.2009.CrossRefPubMed Rodriguez-Raecke R, Niemeier A, Ihle K, Ruether W, May A: Brain gray matter decrease in chronic pain is the consequence and not the cause of pain. J Neurosci. 2009, 29 (44): 13746-13750. 10.1523/JNEUROSCI.3687-09.2009.CrossRefPubMed
8.
go back to reference Tsao H, Galea MP, Hodges PW: Driving plasticity in the motor cortex in recurrent low back pain. Eur J Pain. 2010, 14 (8): 832-839. 10.1016/j.ejpain.2010.01.001.CrossRefPubMed Tsao H, Galea MP, Hodges PW: Driving plasticity in the motor cortex in recurrent low back pain. Eur J Pain. 2010, 14 (8): 832-839. 10.1016/j.ejpain.2010.01.001.CrossRefPubMed
9.
go back to reference Waddell G: The Back Pain Revolution. 2004, Edinburgh: Churchill Livingstone Waddell G: The Back Pain Revolution. 2004, Edinburgh: Churchill Livingstone
10.
go back to reference Coffey RJ: Deep brain stimulation for chronic pain: results of two multicenter trials and a structured review. Pain Med. 2001, 2 (3): 183-192. 10.1046/j.1526-4637.2001.01029.x.CrossRefPubMed Coffey RJ: Deep brain stimulation for chronic pain: results of two multicenter trials and a structured review. Pain Med. 2001, 2 (3): 183-192. 10.1046/j.1526-4637.2001.01029.x.CrossRefPubMed
11.
go back to reference Rasche D, Rinaldi PC, Young RF, Tronnier VM: Deep brain stimulation for the treatment of various chronic pain syndromes. Neurosurg Focus. 2006, 21 (6): E8-CrossRefPubMed Rasche D, Rinaldi PC, Young RF, Tronnier VM: Deep brain stimulation for the treatment of various chronic pain syndromes. Neurosurg Focus. 2006, 21 (6): E8-CrossRefPubMed
12.
go back to reference Kumar K, Toth C, Nath RK: Deep brain stimulation for intractable pain: a 15-year experience. Neurosurgery. 1997, 40 (4): 736-746. 10.1097/00006123-199704000-00015. discussion 746-737CrossRefPubMed Kumar K, Toth C, Nath RK: Deep brain stimulation for intractable pain: a 15-year experience. Neurosurgery. 1997, 40 (4): 736-746. 10.1097/00006123-199704000-00015. discussion 746-737CrossRefPubMed
13.
go back to reference Tsubokawa T, Katayama Y, Yamamoto T, Hirayama T, Koyama S: Chronic motor cortex stimulation for the treatment of central pain. Acta Neurochir Suppl (Wien). 1991, 52: 137-139.CrossRef Tsubokawa T, Katayama Y, Yamamoto T, Hirayama T, Koyama S: Chronic motor cortex stimulation for the treatment of central pain. Acta Neurochir Suppl (Wien). 1991, 52: 137-139.CrossRef
14.
go back to reference Velasco F, Arguelles C, Carrillo-Ruiz JD, Castro G, Velasco AL, Jimenez F, Velasco M: Efficacy of motor cortex stimulation in the treatment of neuropathic pain: a randomized double-blind trial. J Neurosurg. 2008, 108 (4): 698-706. 10.3171/JNS/2008/108/4/0698.CrossRefPubMed Velasco F, Arguelles C, Carrillo-Ruiz JD, Castro G, Velasco AL, Jimenez F, Velasco M: Efficacy of motor cortex stimulation in the treatment of neuropathic pain: a randomized double-blind trial. J Neurosurg. 2008, 108 (4): 698-706. 10.3171/JNS/2008/108/4/0698.CrossRefPubMed
15.
go back to reference Trivedi B: Electrify Your Mind - Literally. New Scientist. 2006, 34-37. April 15 Trivedi B: Electrify Your Mind - Literally. New Scientist. 2006, 34-37. April 15
16.
go back to reference Fregni F, Boggio PS, Lima MC, Ferreira MJ, Wagner T, Rigonatti SP, Castro AW, Souza DR, Riberto M, Freedman SD: A sham-controlled, phase II trial of transcranial direct current stimulation for the treatment of central pain in traumatic spinal cord injury. Pain. 2006, 122 (1-2): 197-209. 10.1016/j.pain.2006.02.023.CrossRefPubMed Fregni F, Boggio PS, Lima MC, Ferreira MJ, Wagner T, Rigonatti SP, Castro AW, Souza DR, Riberto M, Freedman SD: A sham-controlled, phase II trial of transcranial direct current stimulation for the treatment of central pain in traumatic spinal cord injury. Pain. 2006, 122 (1-2): 197-209. 10.1016/j.pain.2006.02.023.CrossRefPubMed
17.
go back to reference Soler MD, Kumru H, Pelayo R, Vidal J, Tormos JM, Fregni F, Navarro X, Pascual-Leone A: Effectiveness of transcranial direct current stimulation and visual illusion on neuropathic pain in spinal cord injury. Brain. 2010, 133 (9): 2565-2577. 10.1093/brain/awq184.CrossRefPubMedPubMedCentral Soler MD, Kumru H, Pelayo R, Vidal J, Tormos JM, Fregni F, Navarro X, Pascual-Leone A: Effectiveness of transcranial direct current stimulation and visual illusion on neuropathic pain in spinal cord injury. Brain. 2010, 133 (9): 2565-2577. 10.1093/brain/awq184.CrossRefPubMedPubMedCentral
18.
go back to reference Fregni F, Gimenes R, Valle AC, Ferreira MJ, Rocha RR, Natalle L, Bravo R, Rigonatti SP, Freedman SD, Nitsche MA: A randomized, sham-controlled, proof of principle study of transcranial direct current stimulation for the treatment of pain in fibromyalgia. Arthritis Rheum. 2006, 54 (12): 3988-3998. 10.1002/art.22195.CrossRefPubMed Fregni F, Gimenes R, Valle AC, Ferreira MJ, Rocha RR, Natalle L, Bravo R, Rigonatti SP, Freedman SD, Nitsche MA: A randomized, sham-controlled, proof of principle study of transcranial direct current stimulation for the treatment of pain in fibromyalgia. Arthritis Rheum. 2006, 54 (12): 3988-3998. 10.1002/art.22195.CrossRefPubMed
19.
go back to reference Valle A, Roizenblatt S, Botte S, Zaghi S, Riberto M, Tufik S, Boggio PS, Fregni F: Efficacy of anodal transcranial direct current stimulation (tDCS) for the treatment of fibromyalgia: results of a randomized, sham-controlled longitudinal clinical trial. J Pain Manag. 2009, 2 (3): 353-361.PubMedPubMedCentral Valle A, Roizenblatt S, Botte S, Zaghi S, Riberto M, Tufik S, Boggio PS, Fregni F: Efficacy of anodal transcranial direct current stimulation (tDCS) for the treatment of fibromyalgia: results of a randomized, sham-controlled longitudinal clinical trial. J Pain Manag. 2009, 2 (3): 353-361.PubMedPubMedCentral
20.
go back to reference Fenton BW, Palmieri PA, Boggio P, Fanning J, Fregni F: A preliminary study of transcranial direct current stimulation for the treatment of refractory chronic pelvic pain. Brain Stimul. 2009, 2 (2): 103-107. 10.1016/j.brs.2008.09.009.CrossRefPubMed Fenton BW, Palmieri PA, Boggio P, Fanning J, Fregni F: A preliminary study of transcranial direct current stimulation for the treatment of refractory chronic pelvic pain. Brain Stimul. 2009, 2 (2): 103-107. 10.1016/j.brs.2008.09.009.CrossRefPubMed
21.
go back to reference Mori F, Codeca C, Kusayanagi H, Monteleone F, Buttari F, Fiore S, Bernardi G, Koch G, Centonze D: Effects of anodal transcranial direct current stimulation on chronic neuropathic pain in patients with multiple sclerosis. J Pain. 2009, 11 (5): 436-442.CrossRefPubMed Mori F, Codeca C, Kusayanagi H, Monteleone F, Buttari F, Fiore S, Bernardi G, Koch G, Centonze D: Effects of anodal transcranial direct current stimulation on chronic neuropathic pain in patients with multiple sclerosis. J Pain. 2009, 11 (5): 436-442.CrossRefPubMed
22.
go back to reference Antal A, Terney D, Kuhnl S, Paulus W: Anodal transcranial direct current stimulation of the motor cortex ameliorates chronic pain and reduces short intracortical inhibition. J Pain Symptom Manage. 2010, 39 (5): 890-903. 10.1016/j.jpainsymman.2009.09.023.CrossRefPubMed Antal A, Terney D, Kuhnl S, Paulus W: Anodal transcranial direct current stimulation of the motor cortex ameliorates chronic pain and reduces short intracortical inhibition. J Pain Symptom Manage. 2010, 39 (5): 890-903. 10.1016/j.jpainsymman.2009.09.023.CrossRefPubMed
23.
go back to reference Boggio PS, Amancio EJ, Correa CF, Cecilio S, Valasek C, Bajwa Z, Freedman SD, Pascual-Leone A, Edwards DJ, Fregni F: Transcranial DC stimulation coupled with TENS for the treatment of chronic pain: a preliminary study. Clin J Pain. 2009, 25 (8): 691-695. 10.1097/AJP.0b013e3181af1414.CrossRefPubMed Boggio PS, Amancio EJ, Correa CF, Cecilio S, Valasek C, Bajwa Z, Freedman SD, Pascual-Leone A, Edwards DJ, Fregni F: Transcranial DC stimulation coupled with TENS for the treatment of chronic pain: a preliminary study. Clin J Pain. 2009, 25 (8): 691-695. 10.1097/AJP.0b013e3181af1414.CrossRefPubMed
24.
go back to reference Poreisz C, Boros K, Antal A, Paulus W: Safety aspects of transcranial direct current stimulation concerning healthy subjects and patients. Brain Res Bull. 2007, 72 (4-6): 208-214. 10.1016/j.brainresbull.2007.01.004.CrossRefPubMed Poreisz C, Boros K, Antal A, Paulus W: Safety aspects of transcranial direct current stimulation concerning healthy subjects and patients. Brain Res Bull. 2007, 72 (4-6): 208-214. 10.1016/j.brainresbull.2007.01.004.CrossRefPubMed
25.
go back to reference Nitsche MA, Liebetanz D, Lang N, Antal A, Tergau F, Paulus W: Safety criteria for transcranial direct current stimulation (tDCS) in humans. Clin Neurophysiol. 2003, 114 (11): 2220-2222. 10.1016/S1388-2457(03)00235-9. author reply 2222-2223CrossRefPubMed Nitsche MA, Liebetanz D, Lang N, Antal A, Tergau F, Paulus W: Safety criteria for transcranial direct current stimulation (tDCS) in humans. Clin Neurophysiol. 2003, 114 (11): 2220-2222. 10.1016/S1388-2457(03)00235-9. author reply 2222-2223CrossRefPubMed
26.
go back to reference Nitsche MA, Liebetanz D, Antal A, Lang N, Tergau F, Paulus W: Modulation of cortical excitability by weak direct current stimulation--technical, safety and functional aspects. Suppl Clin Neurophysiol. 2003, 56: 255-276.CrossRefPubMed Nitsche MA, Liebetanz D, Antal A, Lang N, Tergau F, Paulus W: Modulation of cortical excitability by weak direct current stimulation--technical, safety and functional aspects. Suppl Clin Neurophysiol. 2003, 56: 255-276.CrossRefPubMed
27.
go back to reference Nitsche MA, Paulus W: Sustained excitability elevations induced by transcranial DC motor cortex stimulation in humans. Neurology. 2001, 57 (10): 1899-1901.CrossRefPubMed Nitsche MA, Paulus W: Sustained excitability elevations induced by transcranial DC motor cortex stimulation in humans. Neurology. 2001, 57 (10): 1899-1901.CrossRefPubMed
28.
go back to reference Gandiga PC, Hummel FC, Cohen LG: Transcranial DC stimulation (tDCS): a tool for double-blind sham-controlled clinical studies in brain stimulation. Clin Neurophysiol. 2006, 117 (4): 845-850. 10.1016/j.clinph.2005.12.003.CrossRefPubMed Gandiga PC, Hummel FC, Cohen LG: Transcranial DC stimulation (tDCS): a tool for double-blind sham-controlled clinical studies in brain stimulation. Clin Neurophysiol. 2006, 117 (4): 845-850. 10.1016/j.clinph.2005.12.003.CrossRefPubMed
29.
go back to reference Bendix AF, Bendix T, Vaegter K, Lund C, Frolund L, Holm L: Multidisciplinary intensive treatment for chronic low back pain: a randomized, prospective study. Cleve Clin J Med. 1996, 63 (1): 62-69.CrossRefPubMed Bendix AF, Bendix T, Vaegter K, Lund C, Frolund L, Holm L: Multidisciplinary intensive treatment for chronic low back pain: a randomized, prospective study. Cleve Clin J Med. 1996, 63 (1): 62-69.CrossRefPubMed
30.
go back to reference Dufour N, Thamsborg G, Oefeldt A, Lundsgaard C, Stender S: Treatment of chronic low back pain: a randomized, clinical trial comparing group-based multidisciplinary biopsychosocial rehabilitation and intensive individual therapist-assisted back muscle strengthening exercises. Spine (Phila Pa 1976). 2010, 35 (5): 469-476. 10.1097/BRS.0b013e3181b8db2e.CrossRef Dufour N, Thamsborg G, Oefeldt A, Lundsgaard C, Stender S: Treatment of chronic low back pain: a randomized, clinical trial comparing group-based multidisciplinary biopsychosocial rehabilitation and intensive individual therapist-assisted back muscle strengthening exercises. Spine (Phila Pa 1976). 2010, 35 (5): 469-476. 10.1097/BRS.0b013e3181b8db2e.CrossRef
31.
go back to reference Lamb SE, Hansen Z, Lall R, Castelnuovo E, Withers EJ, Nichols V, Potter R, Underwood MR: Group cognitive behavioural treatment for low-back pain in primary care: a randomised controlled trial and cost-effectiveness analysis. Lancet. 2010, 375 (9718): 916-923. 10.1016/S0140-6736(09)62164-4.CrossRefPubMed Lamb SE, Hansen Z, Lall R, Castelnuovo E, Withers EJ, Nichols V, Potter R, Underwood MR: Group cognitive behavioural treatment for low-back pain in primary care: a randomised controlled trial and cost-effectiveness analysis. Lancet. 2010, 375 (9718): 916-923. 10.1016/S0140-6736(09)62164-4.CrossRefPubMed
32.
go back to reference Ostelo RW, Deyo RA, Stratford P, Waddell G, Croft P, Von Korff M, Bouter LM, de Vet HC: Interpreting change scores for pain and functional status in low back pain: towards international consensus regarding minimal important change. Spine (Phila Pa 1976). 2008, 33 (1): 90-94. 10.1097/BRS.0b013e31815e3a10.CrossRef Ostelo RW, Deyo RA, Stratford P, Waddell G, Croft P, Von Korff M, Bouter LM, de Vet HC: Interpreting change scores for pain and functional status in low back pain: towards international consensus regarding minimal important change. Spine (Phila Pa 1976). 2008, 33 (1): 90-94. 10.1097/BRS.0b013e31815e3a10.CrossRef
34.
go back to reference Fairbank JC, Couper J, Davies JB, O'Brien JP: The Oswestry low back pain disability questionnaire. Physiotherapy. 1980, 66 (8): 271-273.PubMed Fairbank JC, Couper J, Davies JB, O'Brien JP: The Oswestry low back pain disability questionnaire. Physiotherapy. 1980, 66 (8): 271-273.PubMed
35.
go back to reference Mannion AF, Junge A, Fairbank JC, Dvorak J, Grob D: Development of a German version of the Oswestry Disability Index. Part 1: cross-cultural adaptation, reliability, and validity. Eur Spine J. 2006, 15 (1): 55-65. 10.1007/s00586-004-0815-0.CrossRefPubMed Mannion AF, Junge A, Fairbank JC, Dvorak J, Grob D: Development of a German version of the Oswestry Disability Index. Part 1: cross-cultural adaptation, reliability, and validity. Eur Spine J. 2006, 15 (1): 55-65. 10.1007/s00586-004-0815-0.CrossRefPubMed
36.
go back to reference ten Klooster PM, Drossaers-Bakker KW, Taal E, van de Laar MA: Patient-perceived satisfactory improvement (PPSI): interpreting meaningful change in pain from the patient's perspective. Pain. 2006, 121 (1-2): 151-157. 10.1016/j.pain.2005.12.021.CrossRefPubMed ten Klooster PM, Drossaers-Bakker KW, Taal E, van de Laar MA: Patient-perceived satisfactory improvement (PPSI): interpreting meaningful change in pain from the patient's perspective. Pain. 2006, 121 (1-2): 151-157. 10.1016/j.pain.2005.12.021.CrossRefPubMed
37.
go back to reference Dunn KM, Croft PR: Classification of low back pain in primary care: using "bothersomeness" to identify the most severe cases. Spine (Phila Pa 1976). 2005, 30 (16): 1887-1892. 10.1097/01.brs.0000173900.46863.02.CrossRef Dunn KM, Croft PR: Classification of low back pain in primary care: using "bothersomeness" to identify the most severe cases. Spine (Phila Pa 1976). 2005, 30 (16): 1887-1892. 10.1097/01.brs.0000173900.46863.02.CrossRef
38.
go back to reference Bergman S, Jacobsson LT, Herrstrom P, Petersson IF: Health status as measured by SF-36 reflects changes and predicts outcome in chronic musculoskeletal pain: a 3-year follow up study in the general population. Pain. 2004, 108 (1-2): 115-123. 10.1016/j.pain.2003.12.013.CrossRefPubMed Bergman S, Jacobsson LT, Herrstrom P, Petersson IF: Health status as measured by SF-36 reflects changes and predicts outcome in chronic musculoskeletal pain: a 3-year follow up study in the general population. Pain. 2004, 108 (1-2): 115-123. 10.1016/j.pain.2003.12.013.CrossRefPubMed
39.
go back to reference Elliott TE, Renier CM, Palcher JA: Chronic pain, depression, and quality of life: correlations and predictive value of the SF-36. Pain Med. 2003, 4 (4): 331-339. 10.1111/j.1526-4637.2003.03040.x.CrossRefPubMed Elliott TE, Renier CM, Palcher JA: Chronic pain, depression, and quality of life: correlations and predictive value of the SF-36. Pain Med. 2003, 4 (4): 331-339. 10.1111/j.1526-4637.2003.03040.x.CrossRefPubMed
40.
go back to reference Ahrens C, Schiltenwolf M, Wang H: [Health-related quality of life (SF-36) in chronic low back pain and comorbid depression.]. Schmerz. 2010, 24 (3): 251-256. 10.1007/s00482-010-0923-1.CrossRefPubMed Ahrens C, Schiltenwolf M, Wang H: [Health-related quality of life (SF-36) in chronic low back pain and comorbid depression.]. Schmerz. 2010, 24 (3): 251-256. 10.1007/s00482-010-0923-1.CrossRefPubMed
41.
go back to reference Bullinger M: German translation and psychometric testing of the SF-36 Health Survey: preliminary results from the IQOLA Project. International Quality of Life Assessment. Soc Sci Med. 1995, 41 (10): 1359-1366. 10.1016/0277-9536(95)00115-N.CrossRefPubMed Bullinger M: German translation and psychometric testing of the SF-36 Health Survey: preliminary results from the IQOLA Project. International Quality of Life Assessment. Soc Sci Med. 1995, 41 (10): 1359-1366. 10.1016/0277-9536(95)00115-N.CrossRefPubMed
42.
go back to reference Kohlmann T, Raspe H: [Hannover Functional Questionnaire in ambulatory diagnosis of functional disability caused by backache]. Rehabilitation (Stuttg). 1996, 35 (1): I-VIII. Kohlmann T, Raspe H: [Hannover Functional Questionnaire in ambulatory diagnosis of functional disability caused by backache]. Rehabilitation (Stuttg). 1996, 35 (1): I-VIII.
43.
go back to reference Waddell G, Newton M, Henderson I, Somerville D, Main CJ: A Fear-Avoidance Beliefs Questionnaire (FABQ) and the role of fear-avoidance beliefs in chronic low back pain and disability. Pain. 1993, 52 (2): 157-168. 10.1016/0304-3959(93)90127-B.CrossRefPubMed Waddell G, Newton M, Henderson I, Somerville D, Main CJ: A Fear-Avoidance Beliefs Questionnaire (FABQ) and the role of fear-avoidance beliefs in chronic low back pain and disability. Pain. 1993, 52 (2): 157-168. 10.1016/0304-3959(93)90127-B.CrossRefPubMed
44.
go back to reference Pfingsten M, Kroner-Herwig B, Leibing E, Kronshage U, Hildebrandt J: Validation of the German version of the Fear-Avoidance Beliefs Questionnaire (FABQ). Eur J Pain. 2000, 4 (3): 259-266. 10.1053/eujp.2000.0178.CrossRefPubMed Pfingsten M, Kroner-Herwig B, Leibing E, Kronshage U, Hildebrandt J: Validation of the German version of the Fear-Avoidance Beliefs Questionnaire (FABQ). Eur J Pain. 2000, 4 (3): 259-266. 10.1053/eujp.2000.0178.CrossRefPubMed
45.
go back to reference Staerkle R, Mannion AF, Elfering A, Junge A, Semmer NK, Jacobshagen N, Grob D, Dvorak J, Boos N: Longitudinal validation of the fear-avoidance beliefs questionnaire (FABQ) in a Swiss-German sample of low back pain patients. Eur Spine J. 2004, 13 (4): 332-340.CrossRefPubMedPubMedCentral Staerkle R, Mannion AF, Elfering A, Junge A, Semmer NK, Jacobshagen N, Grob D, Dvorak J, Boos N: Longitudinal validation of the fear-avoidance beliefs questionnaire (FABQ) in a Swiss-German sample of low back pain patients. Eur Spine J. 2004, 13 (4): 332-340.CrossRefPubMedPubMedCentral
46.
go back to reference Vlaeyen JW, Linton SJ: Fear-avoidance and its consequences in chronic musculoskeletal pain: a state of the art. Pain. 2000, 85 (3): 317-332. 10.1016/S0304-3959(99)00242-0.CrossRefPubMed Vlaeyen JW, Linton SJ: Fear-avoidance and its consequences in chronic musculoskeletal pain: a state of the art. Pain. 2000, 85 (3): 317-332. 10.1016/S0304-3959(99)00242-0.CrossRefPubMed
47.
go back to reference Leonhardt C, Lehr D, Chenot JF, Keller S, Luckmann J, Basler HD, Baum E, Donner-Banzhoff N, Pfingsten M, Hildebrandt J: Are fear-avoidance beliefs in low back pain patients a risk factor for low physical activity or vice versa? A cross-lagged panel analysis. Psychosoc Med. 2009, 6 (Doc01): Leonhardt C, Lehr D, Chenot JF, Keller S, Luckmann J, Basler HD, Baum E, Donner-Banzhoff N, Pfingsten M, Hildebrandt J: Are fear-avoidance beliefs in low back pain patients a risk factor for low physical activity or vice versa? A cross-lagged panel analysis. Psychosoc Med. 2009, 6 (Doc01):
48.
go back to reference Zigmond AS, Snaith RP: The hospital anxiety and depression scale. Acta Psychiatr Scand. 1983, 67 (6): 361-370. 10.1111/j.1600-0447.1983.tb09716.x.CrossRefPubMed Zigmond AS, Snaith RP: The hospital anxiety and depression scale. Acta Psychiatr Scand. 1983, 67 (6): 361-370. 10.1111/j.1600-0447.1983.tb09716.x.CrossRefPubMed
49.
go back to reference Kääpä EF, Sarna K, Malmivaara S: Multidisciplinary Group Rehabilitation Versus Individual Physiotherapy for Chronic Nonspecific Low Back Pain. Spine. 2008, 31 (4): 371-376.CrossRef Kääpä EF, Sarna K, Malmivaara S: Multidisciplinary Group Rehabilitation Versus Individual Physiotherapy for Chronic Nonspecific Low Back Pain. Spine. 2008, 31 (4): 371-376.CrossRef
51.
go back to reference O'Connell NE, Wand BM, Marston L, Spencer S, DeSouza LH: Non-invasive brain stimulation techniques for chronic pain in adults (protocol). Cochrane Database Syst Rev (online). 2010 O'Connell NE, Wand BM, Marston L, Spencer S, DeSouza LH: Non-invasive brain stimulation techniques for chronic pain in adults (protocol). Cochrane Database Syst Rev (online). 2010
52.
go back to reference Guyatt GH, Oxman AD, Vist GE, Kunz R, Falck-Ytter Y, Alonso-Coello P, Schunemann HJ: GRADE: an emerging consensus on rating quality of evidence and strength of recommendations. BMJ. 2008, 336 (7650): 924-926. 10.1136/bmj.39489.470347.AD.CrossRefPubMedPubMedCentral Guyatt GH, Oxman AD, Vist GE, Kunz R, Falck-Ytter Y, Alonso-Coello P, Schunemann HJ: GRADE: an emerging consensus on rating quality of evidence and strength of recommendations. BMJ. 2008, 336 (7650): 924-926. 10.1136/bmj.39489.470347.AD.CrossRefPubMedPubMedCentral
53.
go back to reference Melzack R: The short-form McGill Pain Questionnaire. Pain. 1987, 30 (2): 191-197. 10.1016/0304-3959(87)91074-8.CrossRefPubMed Melzack R: The short-form McGill Pain Questionnaire. Pain. 1987, 30 (2): 191-197. 10.1016/0304-3959(87)91074-8.CrossRefPubMed
54.
go back to reference Exner V, Keel P: [Measuring disability of patients with low-back pain--validation of a German version of the Roland & Morris disability questionnaire]. Schmerz. 2000, 14 (6): 392-400. 10.1007/s004820070004.CrossRefPubMed Exner V, Keel P: [Measuring disability of patients with low-back pain--validation of a German version of the Roland & Morris disability questionnaire]. Schmerz. 2000, 14 (6): 392-400. 10.1007/s004820070004.CrossRefPubMed
Metadata
Title
Effectiveness of anodal transcranial direct current stimulation in patients with chronic low back pain: Design, method and protocol for a randomised controlled trial
Authors
Kerstin Luedtke
Alison Rushton
Christine Wright
Tim P Juergens
Gerd Mueller
Arne May
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2011
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/1471-2474-12-290

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