Hypoalgesic Effect of Electrical Current and Cervical Manipulation
Transcutaneous Electrical Nerve Stimulation and Cervical Joint Manipulation on Pressure Pain Threshold
1 other identifier
interventional
144
1 country
2
Brief Summary
This study evaluates the hypoalgesic effect of the TENS application associated with joint manipulation of the cervical region in healthy individuals. One group had both active treatments, the other group received both placebo treatments, the third and fourth group received only one of the two treatments actively and the other placebo
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable pain
Started May 2018
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 24, 2018
CompletedStudy Start
First participant enrolled
May 10, 2018
CompletedFirst Posted
Study publicly available on registry
May 21, 2018
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 20, 2018
CompletedStudy Completion
Last participant's last visit for all outcomes
January 27, 2019
CompletedFebruary 8, 2019
February 1, 2019
6 months
April 24, 2018
February 7, 2019
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Pressure Pain Threshold of the posterior region of the forearm
The examiner will use a Somedic Type II digital pressure algometer (Somedic Inc, Hörby, Sweden) on the posterior region of the forearm 10cm below the lateral epicondyle of the elbow towards the third finger, with the forearm maintained in pronation. Next, the pressure will be applied perpendicularly to the skin at a rate of 40kPa/s using a flat, 1cm2 circular probe covered with 1mm of rubber to avoid any skin pain from sharp metal edges. The average of the PPT scores (in kPa) will be recorded by the assessor.
1 minute after the end of the intervention.
Secondary Outcomes (3)
Pressure Pain Threshold of the posterior region of the forearm
20 minutes after the end of the intervention
Pressure Pain Threshold of the tibialis anterior muscle
1 minute after the end of the intervention.
Pressure Pain Threshold of the tibialis anterior muscle
20 minutes after the end of the intervention
Study Arms (4)
active TENS and CJM
ACTIVE COMPARATORThe active unit will be applied with the patient in a supine position at a high frequency of 100 Hz, and pulse duration of 100 µs. Strong but comfortable intensity as dictated by each subject will be applied for 20 minutes. After application of TENS The examiner 3, who is responsible for cervical joint manipulation, will enter the room and stand at the head of the patient. Using the middle phalanx of the second finger of one hand, the examiner will apply pressure laterally on the joint processes of C6 and C7 vertebrae; the examiner will cradle the patient's opposite side with the other hand and then perform an ipsilateral inclination towards the C6, C7 segments, followed by a contralateral rotation to the tissue barrier to perform a high-velocity low-amplitude manipulation (thrust).
placebos TENS and CJM
PLACEBO COMPARATORThe application of placebo TENS will be at a frequency of 100 Hz and pulse duration of 100 µs for 30 seconds. After the initial 30 seconds, the current amplitude will gradually decrease over 15 seconds until it reaches zero value. Placebo CJM will be performed using an identical position to the active manipulation, however, for only 15 seconds, as proposed by some authors that have used placebo group in their studies\[42-44\]. The examiner shall not exert tension in the joint capsule of the segment to ensure the placebo effect
placebo TENS and active CJM
ACTIVE COMPARATORThe application of placebo TENS will be at a frequency of 100 Hz and pulse duration of 100 µs for 30 seconds. After the initial 30 seconds, the current amplitude will gradually decrease over 15 seconds until it reaches zero value. After application of placebo TENS The examiner 3, who is responsible for cervical joint manipulation, will enter the room and stand at the head of the patient. Using the middle phalanx of the second finger of one hand, the examiner will apply pressure laterally on the joint processes of C6 and C7 vertebrae; the examiner will cradle the patient's opposite side with the other hand and then perform an ipsilateral inclination towards the C6, C7 segments, followed by a contralateral rotation.
active TENS and placebo CJM
ACTIVE COMPARATORThe active unit will be applied with the patient in a supine position at a high frequency of 100 Hz, and pulse duration of 100 µs. Strong but comfortable intensity as dictated by each subject will be applied for 20 minutes. After application of placebo TENS The examiner 3, who is responsible for cervical joint manipulation, will enter the room and stand at the head of the patient. Using the middle phalanx of the second finger of one hand, the examiner will apply pressure laterally on the joint processes of C6 and C7 vertebrae; the examiner will cradle the patient's opposite side with the other hand and then perform an ipsilateral inclination towards the C6, C7 segments, followed by a contralateral rotation.
Interventions
The subject's skin will be cleaned with mild soap and water. Two square self-adhesive electrodes (5x5cm) will be placed 1 cm below the olecranon of the ulna and 10 cm above the radiocarpal joint of the dominant hand, maintaining the PPT measurement region between two electrodes. Two identical TENS units will be used: an active and a placebo (Neurodyn Portable TENS, IBRAMED). The active unit will be applied with the patient in a supine position at a high frequency of 100 Hz, and pulse duration of 100 µs. Strong but comfortable intensity as dictated by each subject will be applied for 20 minutes. Participants will be asked about the intensity of TENS every 5 minutes, and if the intensity has faded, the intensity will be increased again to a strong but comfortable level.
The examiner 3, who is responsible for cervical joint manipulation, will enter the room and stand at the head of the patient. Using the middle phalanx of the second finger of one hand, the examiner will apply pressure laterally on the joint processes of C6 and C7 vertebrae; the examiner will cradle the patient's opposite side with the other hand and then perform an ipsilateral inclination towards the C6, C7 segments, followed by a contralateral rotation to the tissue barrier to perform a high-velocity low-amplitude manipulation (thrust). If the patient does not experience joint cavitation during the maneuver, two more attempts will be made. If no sound occurs on the third attempt, the joints will be considered manipulated.
The application of placebo TENS will be at a frequency of 100 Hz and pulse duration of 100 µs for 30 seconds. After the initial 30 seconds, the current amplitude will gradually decrease over 15 seconds until it reaches zero value. Participants will be informed that TENS can cause a slight tingling sensation or any sensation during the procedure. They will be asked every 5 minutes if they are comfortable, without increasing intensity as in the active TENS group
Placebo CJM will be performed using an identical position to the active manipulation, however, for only 15 seconds, as proposed by some authors that have used placebo group in their studies. The examiner shall not exert tension in the joint capsule of the segment to ensure the placebo effect. The maneuvers will be carried out by a physiotherapist with more than 5 years of experience in manual therapy. The active or placebo manipulation will be performed on the right or left side according to randomization.
Eligibility Criteria
You may qualify if:
- healthy subjects
- no pain complaints from the last 90 days
You may not qualify if:
- previous spinal surgeries
- spinal canal stenosis
- vertebral fracture
- spondylolisthesis
- cancer
- acute infections
- hemorrhagic disorders
- active tuberculosis
- deep vein thrombosis
- osteoporosis
- diseases rheumatic
- diseases metabolic
- cardiorespiratory diseases
- headache in the last seven days
- smoking
- +11 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Centro UniversitĂ¡rio CatĂ³lico Salesiano Auxilium de Lins
Lins, SĂ£o Paulo, 16400-505, Brazil
Ufscar - Universidade Federal de SĂ£o Carlos
SĂ£o Carlos, SĂ£o Paulo, 13565-905, Brazil
Related Publications (48)
Sluka KA, Deacon M, Stibal A, Strissel S, Terpstra A. Spinal blockade of opioid receptors prevents the analgesia produced by TENS in arthritic rats. J Pharmacol Exp Ther. 1999 May;289(2):840-6.
PMID: 10215661BACKGROUNDMelzack R, Wall PD. Pain mechanisms: a new theory. Science. 1965 Nov 19;150(3699):971-9. doi: 10.1126/science.150.3699.971. No abstract available.
PMID: 5320816BACKGROUNDMayer DJ, Price DD, Rafii A. Antagonism of acupuncture analgesia in man by the narcotic antagonist naloxone. Brain Res. 1977 Feb;121(2):368-72. doi: 10.1016/0006-8993(77)90161-5. No abstract available.
PMID: 832169BACKGROUNDHa H, Tan EC, Fukunaga H, Aochi O. Naloxone reversal of acupuncture analgesia in the monkey. Exp Neurol. 1981 Jul;73(1):298-303. doi: 10.1016/0014-4886(81)90063-7. No abstract available.
PMID: 7250283BACKGROUNDCitak Karakaya I, Karakaya MG, Ergun E, Elmali S, Firat T. Effects of different frequencies of conventional transcutaneous electrical nerve stimulation on pressure pain threshold and tolerance. J Back Musculoskelet Rehabil. 2014;27(2):197-201. doi: 10.3233/BMR-130436.
PMID: 24254493BACKGROUNDDailey DL, Rakel BA, Vance CGT, Liebano RE, Amrit AS, Bush HM, Lee KS, Lee JE, Sluka KA. Transcutaneous electrical nerve stimulation reduces pain, fatigue and hyperalgesia while restoring central inhibition in primary fibromyalgia. Pain. 2013 Nov;154(11):2554-2562. doi: 10.1016/j.pain.2013.07.043. Epub 2013 Jul 27.
PMID: 23900134BACKGROUNDSabino GS, Santos CM, Francischi JN, de Resende MA. Release of endogenous opioids following transcutaneous electric nerve stimulation in an experimental model of acute inflammatory pain. J Pain. 2008 Feb;9(2):157-63. doi: 10.1016/j.jpain.2007.09.003. Epub 2007 Nov 7.
PMID: 17988952BACKGROUNDChandran P, Sluka KA. Development of opioid tolerance with repeated transcutaneous electrical nerve stimulation administration. Pain. 2003 Mar;102(1-2):195-201. doi: 10.1016/s0304-3959(02)00381-0.
PMID: 12620611BACKGROUNDHan JS, Chen XH, Sun SL, Xu XJ, Yuan Y, Yan SC, Hao JX, Terenius L. Effect of low- and high-frequency TENS on Met-enkephalin-Arg-Phe and dynorphin A immunoreactivity in human lumbar CSF. Pain. 1991 Dec;47(3):295-298. doi: 10.1016/0304-3959(91)90218-M.
PMID: 1686080BACKGROUNDFlynn TW, Childs JD, Fritz JM. The audible pop from high-velocity thrust manipulation and outcome in individuals with low back pain. J Manipulative Physiol Ther. 2006 Jan;29(1):40-5. doi: 10.1016/j.jmpt.2005.11.005.
PMID: 16396728BACKGROUNDDunning J, Rushton A. The effects of cervical high-velocity low-amplitude thrust manipulation on resting electromyographic activity of the biceps brachii muscle. Man Ther. 2009 Oct;14(5):508-13. doi: 10.1016/j.math.2008.09.003. Epub 2008 Nov 21.
PMID: 19027344BACKGROUNDDeVocht JW, Pickar JG, Wilder DG. Spinal manipulation alters electromyographic activity of paraspinal muscles: a descriptive study. J Manipulative Physiol Ther. 2005 Sep;28(7):465-71. doi: 10.1016/j.jmpt.2005.07.002.
PMID: 16182019BACKGROUNDEvans DW. Mechanisms and effects of spinal high-velocity, low-amplitude thrust manipulation: previous theories. J Manipulative Physiol Ther. 2002 May;25(4):251-62. doi: 10.1067/mmt.2002.123166.
PMID: 12021744BACKGROUNDAchalandabaso A, Plaza-Manzano G, Lomas-Vega R, Martinez-Amat A, Camacho MV, Gasso M, Hita-Contreras F, Molina F. Tissue damage markers after a spinal manipulation in healthy subjects: a preliminary report of a randomized controlled trial. Dis Markers. 2014;2014:815379. doi: 10.1155/2014/815379. Epub 2014 Dec 25.
PMID: 25609853BACKGROUNDWright A. Hypoalgesia post-manipulative therapy: a review of a potential neurophysiological mechanism. Man Ther. 1995 Nov;1(1):11-6. doi: 10.1054/math.1995.0244.
PMID: 11327789BACKGROUNDPickar JG, Wheeler JD. Response of muscle proprioceptors to spinal manipulative-like loads in the anesthetized cat. J Manipulative Physiol Ther. 2001 Jan;24(1):2-11. doi: 10.1067/mmt.2001.112017.
PMID: 11174689BACKGROUNDMaigne JY, Vautravers P. Mechanism of action of spinal manipulative therapy. Joint Bone Spine. 2003 Sep;70(5):336-41. doi: 10.1016/s1297-319x(03)00074-5.
PMID: 14563460BACKGROUNDRandoll C, Gagnon-Normandin V, Tessier J, Bois S, Rustamov N, O'Shaughnessy J, Descarreaux M, Piche M. The mechanism of back pain relief by spinal manipulation relies on decreased temporal summation of pain. Neuroscience. 2017 May 4;349:220-228. doi: 10.1016/j.neuroscience.2017.03.006. Epub 2017 Mar 11.
PMID: 28288900BACKGROUNDBialosky JE, Bishop MD, Price DD, Robinson ME, George SZ. The mechanisms of manual therapy in the treatment of musculoskeletal pain: a comprehensive model. Man Ther. 2009 Oct;14(5):531-8. doi: 10.1016/j.math.2008.09.001. Epub 2008 Nov 21.
PMID: 19027342BACKGROUNDCoronado RA, Gay CW, Bialosky JE, Carnaby GD, Bishop MD, George SZ. Changes in pain sensitivity following spinal manipulation: a systematic review and meta-analysis. J Electromyogr Kinesiol. 2012 Oct;22(5):752-67. doi: 10.1016/j.jelekin.2011.12.013. Epub 2012 Jan 30.
PMID: 22296867BACKGROUNDSavva C, Giakas G, Efstathiou M. The role of the descending inhibitory pain mechanism in musculoskeletal pain following high-velocity, low amplitude thrust manipulation: a review of the literature. J Back Musculoskelet Rehabil. 2014;27(4):377-82. doi: 10.3233/BMR-140472.
PMID: 24867897BACKGROUNDGay CW, Robinson ME, George SZ, Perlstein WM, Bishop MD. Immediate changes after manual therapy in resting-state functional connectivity as measured by functional magnetic resonance imaging in participants with induced low back pain. J Manipulative Physiol Ther. 2014 Nov-Dec;37(9):614-27. doi: 10.1016/j.jmpt.2014.09.001. Epub 2014 Oct 3.
PMID: 25284739BACKGROUNDJordon MK, Beattie PF, D'Urso S, Scriven S. Spinal manipulation does not affect pressure pain thresholds in the absence of neuromodulators: a randomized controlled trial. J Man Manip Ther. 2017 Sep;25(4):172-181. doi: 10.1080/10669817.2016.1230352. Epub 2016 Sep 12.
PMID: 28912629BACKGROUNDBoal RW, Gillette RG. Central neuronal plasticity, low back pain and spinal manipulative therapy. J Manipulative Physiol Ther. 2004 Jun;27(5):314-26. doi: 10.1016/j.jmpt.2004.04.005.
PMID: 15195039BACKGROUNDMolina-Ortega F, Lomas-Vega R, Hita-Contreras F, Plaza Manzano G, Achalandabaso A, Ramos-Morcillo AJ, Martinez-Amat A. Immediate effects of spinal manipulation on nitric oxide, substance P and pain perception. Man Ther. 2014 Oct;19(5):411-7. doi: 10.1016/j.math.2014.02.007. Epub 2014 Mar 5.
PMID: 24674816BACKGROUNDNakatsuka T, Chen M, Takeda D, King C, Ling J, Xing H, Ataka T, Vierck C, Yezierski R, Gu JG. Substance P-driven feed-forward inhibitory activity in the mammalian spinal cord. Mol Pain. 2005 Jun 29;1:20. doi: 10.1186/1744-8069-1-20.
PMID: 15987503BACKGROUNDWu LJ, Xu H, Ko SW, Yoshimura M, Zhuo M. Feed-forward inhibition: a novel cellular mechanism for the analgesic effect of substance P. Mol Pain. 2005 Nov 18;1:34. doi: 10.1186/1744-8069-1-34.
PMID: 16297242BACKGROUNDPantaleao MA, Laurino MF, Gallego NL, Cabral CM, Rakel B, Vance C, Sluka KA, Walsh DM, Liebano RE. Adjusting pulse amplitude during transcutaneous electrical nerve stimulation (TENS) application produces greater hypoalgesia. J Pain. 2011 May;12(5):581-90. doi: 10.1016/j.jpain.2010.11.001. Epub 2011 Feb 1.
PMID: 21277840BACKGROUNDDoig GS, Simpson F. Randomization and allocation concealment: a practical guide for researchers. J Crit Care. 2005 Jun;20(2):187-91; discussion 191-3. doi: 10.1016/j.jcrc.2005.04.005.
PMID: 16139163BACKGROUNDLiebano RE, Rakel B, Vance CGT, Walsh DM, Sluka KA. An investigation of the development of analgesic tolerance to TENS in humans. Pain. 2011 Feb;152(2):335-342. doi: 10.1016/j.pain.2010.10.040. Epub 2010 Dec 8.
PMID: 21144659BACKGROUNDLeffler AS, Hansson P, Kosek E. Somatosensory perception in patients suffering from long-term trapezius myalgia at the site overlying the most painful part of the muscle and in an area of pain referral. Eur J Pain. 2003;7(3):267-76. doi: 10.1016/S1090-3801(02)00138-6.
PMID: 12725850BACKGROUNDLiebano RE, Vance CG, Rakel BA, Lee JE, Cooper NA, Marchand S, Walsh DM, Sluka KA. Transcutaneous electrical nerve stimulation and conditioned pain modulation influence the perception of pain in humans. Eur J Pain. 2013 Nov;17(10):1539-46. doi: 10.1002/j.1532-2149.2013.00328.x. Epub 2013 May 6.
PMID: 23650092BACKGROUNDWalton DM, Macdermid JC, Nielson W, Teasell RW, Chiasson M, Brown L. Reliability, standard error, and minimum detectable change of clinical pressure pain threshold testing in people with and without acute neck pain. J Orthop Sports Phys Ther. 2011 Sep;41(9):644-50. doi: 10.2519/jospt.2011.3666. Epub 2011 Sep 1.
PMID: 21885906BACKGROUNDTreede RD, Rief W, Barke A, Aziz Q, Bennett MI, Benoliel R, Cohen M, Evers S, Finnerup NB, First MB, Giamberardino MA, Kaasa S, Kosek E, Lavand'homme P, Nicholas M, Perrot S, Scholz J, Schug S, Smith BH, Svensson P, Vlaeyen JWS, Wang SJ. A classification of chronic pain for ICD-11. Pain. 2015 Jun;156(6):1003-1007. doi: 10.1097/j.pain.0000000000000160. No abstract available.
PMID: 25844555BACKGROUNDStaud R. Treatment of fibromyalgia and its symptoms. Expert Opin Pharmacother. 2007 Aug;8(11):1629-42. doi: 10.1517/14656566.8.11.1629.
PMID: 17685881BACKGROUNDMoran F, Leonard T, Hawthorne S, Hughes CM, McCrum-Gardner E, Johnson MI, Rakel BA, Sluka KA, Walsh DM. Hypoalgesia in response to transcutaneous electrical nerve stimulation (TENS) depends on stimulation intensity. J Pain. 2011 Aug;12(8):929-35. doi: 10.1016/j.jpain.2011.02.352. Epub 2011 Apr 9.
PMID: 21481649BACKGROUNDRakel B, Cooper N, Adams HJ, Messer BR, Frey Law LA, Dannen DR, Miller CA, Polehna AC, Ruggle RC, Vance CG, Walsh DM, Sluka KA. A new transient sham TENS device allows for investigator blinding while delivering a true placebo treatment. J Pain. 2010 Mar;11(3):230-8. doi: 10.1016/j.jpain.2009.07.007. Epub 2009 Nov 27.
PMID: 19945354BACKGROUNDFernandez-Carnero J, Fernandez-de-Las-Penas C, de la Llave-Rincon AI, Ge HY, Arendt-Nielsen L. Widespread mechanical pain hypersensitivity as sign of central sensitization in unilateral epicondylalgia: a blinded, controlled study. Clin J Pain. 2009 Sep;25(7):555-61. doi: 10.1097/AJP.0b013e3181a68a040.
PMID: 19692795BACKGROUNDSaiz-Llamosas JR, Fernandez-Perez AM, Fajardo-Rodriguez MF, Pilat A, Valenza-Demet G, Fernandez-de-Las-Penas C. Changes in neck mobility and pressure pain threshold levels following a cervical myofascial induction technique in pain-free healthy subjects. J Manipulative Physiol Ther. 2009 Jun;32(5):352-7. doi: 10.1016/j.jmpt.2009.04.009.
PMID: 19539117BACKGROUNDFernandez-de-las-Penas C, Perez-de-Heredia M, Brea-Rivero M, Miangolarra-Page JC. Immediate effects on pressure pain threshold following a single cervical spine manipulation in healthy subjects. J Orthop Sports Phys Ther. 2007 Jun;37(6):325-9. doi: 10.2519/jospt.2007.2542.
PMID: 17612359BACKGROUNDVernon HT, Triano JJ, Ross JK, Tran SK, Soave DM, Dinulos MD. Validation of a novel sham cervical manipulation procedure. Spine J. 2012 Nov;12(11):1021-8. doi: 10.1016/j.spinee.2012.10.009. Epub 2012 Nov 15.
PMID: 23158966BACKGROUNDGomes Ade O, Silvestre AC, Silva CF, Gomes MR, Bonfleur ML, Bertolini GR. Influence of different frequencies of transcutaneous electrical nerve stimulation on the threshold and pain intensity in young subjects. Einstein (Sao Paulo). 2014 Sep;12(3):318-22. doi: 10.1590/s1679-45082014ao3092.
PMID: 25295453BACKGROUNDWassinger CA, Rich D, Cameron N, Clark S, Davenport S, Lingelbach M, Smith A, Baxter GD, Davidson J. Cervical & thoracic manipulations: Acute effects upon pain pressure threshold and self-reported pain in experimentally induced shoulder pain. Man Ther. 2016 Feb;21:227-32. doi: 10.1016/j.math.2015.08.009. Epub 2015 Aug 28.
PMID: 26391291BACKGROUNDChesterton LS, Foster NE, Wright CC, Baxter GD, Barlas P. Effects of TENS frequency, intensity and stimulation site parameter manipulation on pressure pain thresholds in healthy human subjects. Pain. 2003 Nov;106(1-2):73-80. doi: 10.1016/s0304-3959(03)00292-6.
PMID: 14581113BACKGROUNDTanaka K, Ikeuchi M, Izumi M, Aso K, Sugimura N, Enoki H, Nagano Y, Ishida K, Tani T. Effects of two different intensities of transcutaneous electrical nerve stimulation on pain thresholds of contralateral muscles in healthy subjects. J Phys Ther Sci. 2015 Sep;27(9):2771-4. doi: 10.1589/jpts.27.2771. Epub 2015 Sep 30.
PMID: 26504290BACKGROUNDFernandez-Carnero J, Fernandez-de-las-Penas C, Cleland JA. Immediate hypoalgesic and motor effects after a single cervical spine manipulation in subjects with lateral epicondylalgia. J Manipulative Physiol Ther. 2008 Nov-Dec;31(9):675-81. doi: 10.1016/j.jmpt.2008.10.005.
PMID: 19028251BACKGROUNDDesantana JM, Sluka KA, Lauretti GR. High and low frequency TENS reduce postoperative pain intensity after laparoscopic tubal ligation: a randomized controlled trial. Clin J Pain. 2009 Jan;25(1):12-9. doi: 10.1097/AJP.0b013e31817d1070.
PMID: 19158541RESULTTelles JD, Gabanela Schiavon MA, Rampazo da Silva EP, Liebano RE. Transcutaneous electrical nerve stimulation and cervical joint manipulation on pressure pain threshold. Pain Manag. 2018 Jul 1;8(4):263-269. doi: 10.2217/pmt-2017-0069. Epub 2018 Jun 1.
PMID: 29856269DERIVED
Related Links
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Richard E Liebano, Dr.
Universidade Federal de SĂ£o Carlos - UFScar
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
- Masking Details
- The blinding will be assessed by examiner 2 (responsible for administering TENS) asking the participants which TENS intervention they think they received, with 3 options for the answer: "active," "placebo" or "don't know". The same questions will be asked by examiner 2 for CJM. Next, examiner 3 (responsible for administering CJM) will receive the blinding outcome and have 3 options for the answer: "active," "placebo" or "don't know". Examiner 1 will receive the blinding outcome will be asked: "Which group does the patient belong to: active TENS and CJM, active TENS and placebo CJM, placebo TENS and active CJM or placebo TENS and CJM" Their responses to these questions will be recorded and used to measure the adequacy of participants and examiners
- Purpose
- BASIC SCIENCE
- Intervention Model
- FACTORIAL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Principal Investigator
Study Record Dates
First Submitted
April 24, 2018
First Posted
May 21, 2018
Study Start
May 10, 2018
Primary Completion
November 20, 2018
Study Completion
January 27, 2019
Last Updated
February 8, 2019
Record last verified: 2019-02
Data Sharing
- IPD Sharing
- Will not share