Efficacy of Videoconference Group Acceptance and Commitment Therapy (ACT) and Behavioral Activation Therapy for Depression (BATD) for Chronic Low Back Pain (CLBP) Plus Comorbid Depressive Symptoms: A Randomized Controlled Trial (IMPACT Study)

This study examined the efficacy of adding a remote, synchronous, group, videoconference-based form of acceptance and commitment therapy (ACT) or behavioral activation therapy for depression (BATD) to treatment-as-usual (TAU) in 234 patients with chronic low back pain (CLBP) plus comorbid depressive symptoms. Participants were randomly assigned to ACT, BATD, or TAU. Compared to TAU, ACT produced a significant reduction in pain interference at posttreatment (d = .64) and at follow-up (d = .73). BATD was only superior to TAU at follow-up (d = .66). A significant reduction in pain catastrophizing was reported by patients assigned to ACT and BATD at posttreatment (d = .45 and d = .59, respectively) and at follow-up (d = .59, in both) compared to TAU. Stress was significantly reduced at posttreatment by ACT in comparison to TAU (d = .69). No significant between-group differences were found in depressive or anxiety symptoms. Clinically relevant number needed to treat (NNT) values for reduction in pain interference were obtained at posttreatment (ACT vs TAU = 4) and at follow-up (ACT vs TAU = 3; BATD vs TAU = 5). In both active therapies, improvements in pain interference at follow-up were significantly related to improvements at posttreatment in psychological flexibility. These findings suggest that new forms of cognitive-behavioral therapy are clinically useful in improving pain interference and pain catastrophizing. Further research on evidence-based change processes is required to understand the therapeutic needs of patients with chronic pain and comorbid conditions.Trial numberNCT04140838.PerspectiveGroup videoconference-based ACT and BATD showed greater efficacy than TAU for reducing pain interference and pain catastrophizing in patients with CLBP plus clinically relevant depression. Psychological flexibility appeared to be the main contributor to treatment effects for both ACT and BATD.     

Efficacy of Online-Based Acceptance and Commitment Therapy for Chronic Pain: A Systematic Review and Meta-Analysis

Acceptance and Commitment Therapy (ACT) has been widely tested for chronic pain, with demonstrated efficacy. Nevertheless, although there is meta-analytical evidence on the efficacy of face-to-face ACT, no reviews have been performed on online ACT in this population. The aim of this meta-analysis is to determine the efficacy of online ACT for adults with chronic pain, when compared with controls. PubMed, PsycINFO, CENTRAL, and Web of Knowledge were searched for randomized controlled trials (RCTs) of online-delivered ACT for chronic pain. Effects were analyzed at post-treatment and follow-up, by calculating standardized mean differences. Online-delivered ACT was generally favored over controls (5 RCTs, N = 746). At post-treatment, medium effects for pain interference and pain acceptance, and small effects for depression, mindfulness, and psychological flexibility were found. A medium effect for pain interference and acceptance, and small effects for pain intensity, depression, anxiety, mindfulness, and psychological flexibility were found at follow-up. ACT-related effects for pain interference, pain intensity, mindfulness, and anxiety increased from post-treatment to follow-up. Nevertheless, the current findings also highlight the need for more methodologically robust RCTs. Future trials should compare online ACT with active treatments, and use measurement methods with low bias.PerspectiveThis is the first meta-analytical review on the efficacy of online ACT for people with chronic pain. It comprises 5 RCTs that compared online ACT with active and/or inactive controls. Online ACT was more efficacious than controls regarding pain interference, pain intensity, depression, anxiety, mindfulness, and psychological flexibility.     

Evaluating the effectiveness of exposure and acceptance strategies to improve functioning and quality of life in longstanding pediatric pain – A randomized controlled trial

Although several studies have illustrated the effectiveness of cognitive behavior therapy (CBT) on adult pain patients, there are few randomized controlled trials on children and adolescents. There is particularly a need for studies on pediatric patients who are severely disabled by longstanding pain syndromes. Acceptance and Commitment Therapy, as an extension of traditional CBT, focuses on improving functioning and quality of life by increasing the patient’s ability to act effectively in concordance with personal values also in the presence of pain and distress. Following a pilot study, we sought to evaluate the effectiveness of an ACT-oriented intervention based on exposure and acceptance strategies and to compare this with a multidisciplinary treatment approach including amitriptyline (n = 32). The ACT condition underwent a relatively brief treatment protocol of approximately 10 weekly sessions. Assessments were made before and immediately after treatment, as well as at 3.5 and 6.5 months follow-up. Prolonged treatment in the MDT group complicated comparisons between groups at follow-up assessments. Results showed substantial and sustained improvements for the ACT group. When follow-up assessments were included, ACT performed significantly better than MDT on perceived functional ability in relation to pain, pain intensity and to pain-related discomfort (intent-to-treat analyses). At post-treatment, significant differences in favor of the ACT condition were also seen in fear of re/injury or kinesiophobia, pain interference and in quality of life. Thus, results from the present study support previous findings and suggest the effectiveness of this ACT-oriented intervention for pediatric longstanding pain syndromes.     

Symptoms of Fibromyalgia According to the 2016 Revised Fibromyalgia Criteria in Chronic Pain Patients Referred to Multidisciplinary Pain Rehabilitation: Influence on Clinical and Experimental Pain Sensitivity

Fibromyalgia (FM) is a condition with chronic widespread pain and signs of generalized pain hypersensitivity. FM has previously been classified according to the American College of Rheumatology-1990 criteria, where the presence of hypersensitivity is estimated by a tender point examination. Because of the limitations of these classification criteria, new diagnostic criteria have been proposed, abandoning this examination. This cross-sectional study investigated the prevalence of FM according to the revised 2016 FM criteria in a large cohort of chronic pain patients. Pain drawings, the FM Symptom Severity Scale, and questionnaires assessing manifestations of pain, pain-related disability, and psychological distress were collected from 1,343 patients with chronic nonmalignant pain referred to a multidisciplinary pain clinic. In addition, assessments of mechanical and thermal pain sensitivity were performed in 496 of the patients. Patients fulfilling the FM criteria (n?=?498, 37%) reported significantly higher levels of pain, pain-related disability, psychological distress, and sensitivity to mechanical and heat stimuli (P?<?.05). Moreover, the proportion using opioids were significantly higher compared with patients not fulfilling the criteria (P?=?.015). Significant associations were found between heat and mechanical pain sensitivity (P?<?.001) indicating that patients who showed higher pain sensitivity to mechanical stimulation also showed higher pain sensitivity to thermal stimulation.

Improvement in the Spatial Distribution of Pain,Somatic Symptoms,and Depression After a Weight Loss Intervention

Weight loss is known to improve pain localized to weight-bearing joints but it is not known how weight loss affects the spatial distribution of pain and associated somatic symptoms like fatigue. We sought to determine if weight loss using a low-calorie diet improves pain, affect, and somatic symptoms commonly associated with chronic pain conditions in an observational study. We also documented changes in inflammatory markers in serum before and after weight loss. Participants were 123 obese individuals undergoing a 12- to 16-week calorie restriction weight loss intervention. The spatial distribution of pain, symptom severity (eg, fatigue, sleep difficulties), depression, and total fibromyalgia scale scores were measured before and after weight loss. Pain (P?=?. 022), symptom severity (P?=?.004), depression (P?<?.001), and fibromyalgia scores (P?=?.004) improved after weight loss; men showed greater improvement than women on somatic symptoms and fibromyalgia scores (both P?<?.01). Those who lost at least 10% of body weight showed greater improvement than those who lost <10%. Levels of the regulatory cytokine interleukin-10 increased after the intervention (P?=?.002). Weight loss may improve diffuse pain and comorbid symptoms commonly seen in chronic pain participants.

Fulranumab as Adjunctive Therapy for Cancer-Related Pain: A Phase 2, Randomized,Double-Blind,Placebo-Controlled,Multicenter Study

This randomized, double-blind (DB), placebo-controlled, phase 2 study assessed the efficacy and safety of fulranumab as a pain therapy adjunctive to opioids in terminally ill cancer patients. Ninety-eight patients were randomized (2:1) to receive one subcutaneous injection of fulranumab (9 mg) or placebo in the 4-week DB phase. Seventy-one (72%) patients entered the 48-week open-label extension phase and were administered 9 mg of fulranumab every 4 weeks. The study failed to demonstrated efficacy at the end of the DB phase (primary endpoint, mean [SD] change in average cancer-related pain intensity was ?.8 (1.26) for fulranumab and ?.7 (1.56) for placebo; P?=?.592). However, potential benefit is suggested based on secondary endpoints (30% responder rate [P?=?.020], Brief Pain Inventory-Short Form [BPI-SF] pain intensity subscale [P?=?.003], and pain interference subscale [P?=?.006]). The most commonly reported treatment-emergent adverse events were (fulranumab vs placebo): asthenia (16% vs 10%), decreased appetite (12% vs 6%), fatigue (10% vs 0%), and malignant neoplasm progression (10% vs 0%). Although no differences were seen between fulranumab and placebo groups on the primary endpoint, improvements in BPI-SF pain subscale scores and responder rates support further research of anti-nerve growth factor therapy in cancer-related pain.

Acceptance and Commitment Therapy for Prevention of Chronic Postsurgical Pain and Opioid Use in At-Risk Veterans: A Pilot Randomized Controlled Study

High levels of pain, significant anxiety, or depressive symptoms before surgery put patients at elevated risk for chronic pain and prolonged opioid use following surgery. The purpose of this preliminary study was to assess the efficacy of a 1-day Acceptance and Commitment Therapy (ACT) workshop in “at-risk” veterans for the prevention of chronic pain and opioid use following orthopedic surgery. In a randomized controlled trial, 88 at-risk veterans undergoing orthopedic surgery were assigned to treatment as usual (TAU; n?=?44) or TAU plus a 1-day ACT workshop (n?=?44). Pain levels and opioid use were assessed up to 3 months following surgery. Pain acceptance and values-based behavior were assessed at baseline and 3-month follow-up. Participants who completed the ACT workshop reached pain and opioid cessation sooner than those in TAU. Postoperative complications exhibited a moderating effect on these outcomes, such that the effects of ACT were greater in patients without complications. Increases in pain acceptance and values-based behavior, processes targeted in ACT, were related to better outcomes. These promising results merit further investigation in a larger clinical trial. Providing an intervention before surgery for at-risk veterans has the potential to change clinical practice from a focus on management of postoperative pain to prevention of chronic pain in at-risk individuals.

Self-Guided Online Cognitive Behavioral Strategies for Chemotherapy-Induced Peripheral Neuropathy: A Multicenter,Pilot, Randomized,Wait-List Controlled Trial

The purpose of this pilot, parallel, randomized controlled trial was to examine the efficacy of a self-guided online cognitive and behaviorally-based pain management intervention (Proactive Self-Management Program for Effects of Cancer Treatment [PROSPECT]) to reduce “worst” pain for individuals with chronic painful chemotherapy-induced peripheral neuropathy (CIPN). Secondary outcomes included “average” pain, nonpainful CIPN symptom severity, impression of change, and pain interference. Sixty patients with chronic painful CIPN were recruited from 5 outpatient academic and community cancer centers. Patients were randomized in a 1:1 ratio to receive either 8 weeks of PROSPECT or usual care. A 7-day electronic “worst” pain intensity diary and standardized measures of pain interference, nonpainful CIPN symptom severity, impression of change, and “average” pain were administered pre/post intervention. Postintervention mean scores were evaluated between groups using analysis of covariance adjusting for baseline. Individuals who received the PROSPECT intervention (n?=?19) had significantly greater improvements in “worst pain” compared with individuals receiving usual care (n?=?19; P?=?.046, d?=?.58). There were no significant differences in mean scores between groups for the secondary outcomes (n?=?42). A larger, adequately powered study testing the PROSPECT intervention is needed to determine if improvements in pain may be sustained, evaluate the effect of the intervention on the secondary outcomes, and identify mediators of pain intensity-related improvement.

Patients With Chronic Spinal Pain Benefit From Pain Neuroscience Education Regardless the Self-Reported Signs of Central Sensitization: Secondary Analysis of a Randomized Controlled Multicenter Trial

Background

Pain neuroscience education is effective in chronic pain management. Central sensitization (ie, generalized hypersensitivity) is often explained as the underlying mechanism for chronic pain, because of its clinical relevance and influence on pain severity, prognosis, and treatment outcome.

Effectiveness of group acceptance and commitment therapy for fibromyalgia: A 6-month randomized controlled trial (EFFIGACT study)

In the last decade, there has been burgeoning interest in the effectiveness of third-generation psychological therapies for managing fibromyalgia (FM) symptoms. The present study examined the effectiveness of acceptance and commitment therapy (ACT) on functional status as well as the role of pain acceptance as a mediator of treatment outcomes in FM patients. A total of 156 patients with FM were enrolled at primary health care centers in Zaragoza, Spain. The patients were randomly assigned to a group-based form of ACT (GACT), recommended pharmacological treatment (RPT; pregabalin + duloxetine), or wait list (WL). The primary end point was functional status (measured with the Fibromyalgia Impact Questionnaire, FIQ). Secondary end points included pain catastrophizing, pain acceptance, pain, anxiety, depression, and health-related quality of life. The differences between groups were calculated by linear mixed-effects (intention-to-treat approach) and mediational models through path analyses. Overall, GACT was statistically superior to both RPT and WL immediately after treatment, and improvements were maintained at 6 months with medium effect sizes in most cases. Immediately after treatment, the number needed to treat for 20% improvement compared to RPT was 2 (95% confidence interval 1.2–2.0), for 50% improvement 46, and for achieving a status of no worse than mild impaired function (FIQ total score <39) also 46. Unexpectedly, 4 of the 5 tested path analyses did not show a mediation effect. Changes in pain acceptance only mediated the relationship between study condition and health-related quality of life. These findings are discussed in relation to previous psychological research on FM treatment.     

Daily Fluctuations of Progesterone and Testosterone Are Associated With Fibromyalgia Pain Severity

The purpose of this longitudinal blood sampling study was to examine relationships between sex hormones and fibromyalgia pain. Eight women meeting case definition criteria for fibromyalgia provided venous blood samples and reported their fibromyalgia pain severity over 25 consecutive days. All women exhibited normal menstrual cycles and were not taking oral contraceptives. Cortisol, and the sex hormones estradiol, progesterone, and testosterone, were assayed from serum. A linear mixed model was used to determine if fluctuations of sex hormones were associated with changes in pain severity. In the entire sample, day to day changes in progesterone (P?=?.002) as well as testosterone (P?=?.015) were significantly and inversely correlated with pain severity. There was no relationship between estradiol and pain (P?=?.551) or cortisol and pain (P?=?.633). These results suggest that progesterone and testosterone play a protective role in fibromyalgia pain severity. Sex and other hormones may serve to increase as well as decrease fibromyalgia pain severity.

Assessment of Responsiveness to Everyday Non-Noxious Stimuli in Pain-Free Migraineurs With Versus Without Aura

Migraineurs with aura (MWA) express higher interictal response to non-noxious and noxious experimental sensory stimuli compared with migraineurs without aura (MWoA), but whether these differences also prevail in response to everyday non-noxious stimuli is not yet explored. This is a cross-sectional study testing 53 female migraineurs (30 MWA; 23 MWoA) who underwent a wide battery of noxious psychophysical testing at a pain-free phase, and completed a Sensory Responsiveness Questionnaire and pain-related psychological questionnaires. The MWA group showed higher questionnaire-based sensory over-responsiveness (P?=?.030), higher magnitude of pain temporal summation (P?=?.031) as well as higher monthly attack frequency (P?=?.027) compared with the MWoA group. Overall, 45% of migraineurs described abnormal sensory (hyper- or hypo-) responsiveness; its incidence was higher among MWA (19 of 30, 63%) versus MWoA (6 of 23, 27%, P?=?.012), with an odds ratio of 3.58 for MWA. Sensory responsiveness scores were positively correlated with attack frequency (r?=?.361, P?=?.008) and temporal summation magnitude (r?=?.390, P?=?.004), both regardless of migraine type. MWA express higher everyday sensory responsiveness than MWoA, in line with higher response to experimental noxious stimuli. Abnormal scores of sensory responsiveness characterize people with sensory modulation dysfunction, suggesting possible underlying mechanisms overlap, and possibly high incidence of both clinical entities.

A Comparative Meta-Analysis of Unidisciplinary Psychology and Interdisciplinary Treatment Outcomes Following Acceptance and Commitment Therapy for Adults with Chronic Pain

While much of the literature provides positive support for psychological interventions for chronic pain, 2 recent meta-analyses indicate small to moderate benefits only. This inconsistency in findings suggests that there are other treatment-related variables to consider. One possible consideration pertains to treatment format, as psychological models form the basis for both unidisciplinary psychology and integrated interdisciplinary treatments for chronic pain. Therefore, a comparative meta-analysis of unidisciplinary and interdisciplinary treatments was performed to determine whether there were differences in treatment effect size (ES) at post-treatment and follow-ups of up to 1 year. One specific treatment model, Acceptance and Commitment Therapy (ACT), was investigated as it was felt that this literature was extensive enough to perform the planned analysis, while also being circumscribed enough in size to make it feasible. In total, 29 articles met inclusion criteria, 13 reported outcomes for unidisciplinary ACT, and 15 for interdisciplinary ACT. At both post-treatment and follow-up, interdisciplinary ACT had a greater ES for physical disability, psychosocial impact, and depression compared to unidisciplinary ACT. No differences in ES were observed for pain intensity, pain-related anxiety, or pain acceptance. Findings remained the same when study heterogeneity was considered. There was a significant difference observed between treatment format and treatment duration—on average, unidisciplinary interventions were of shorter duration than interdisciplinary interventions. Moderation analyses examining the relation between total treatment duration and ES generally indicated a moderate positive relation between treatment length and ES. This relation was strong for psychosocial impact.PerspectiveA comparative meta-analysis examined the relative ES of unidisciplinary (ie, clinical psychology only) and interdisciplinary ACT for chronic pain in 29 studies. The ES for interdisciplinary ACT was larger than unidisciplinary ACT for physical disability, psychosocial impact, and depression. No differences were present for pain intensity, anxiety, and acceptance.     

The Effect of Preoperative Intra-Articular Methylprednisolone on Pain After TKA: A Randomized Double-Blinded Placebo Controlled Trial in Patients With High-Pain Knee Osteoarthritis and Sensitization

In a randomized, double-blind, placebo controlled trial, we investigated the postoperative analgesic effect of a single intra-articular injection of 40?mg methylprednisolone acetate (MP) administered 1 week before total knee arthroplasty (TKA). Forty-eight patients with high pain osteoarthritis (≥5 on a numeric rating scale during walk) and sensitization (pressure pain threshold?<250?kPa), aged 50 to 80 years and scheduled for primary unilateral TKA under spinal anaesthesia were included. The primary outcome was the proportion of patients with moderate/severe pain during a 5-m walk test 24 hours postoperatively. Secondary outcomes included pain at 48 hours, during the first 14 days, sensitization (quantitative sensory testing with pressure pain threshold and wind-up from temporal summation), and inflammatory changes (systemic C-reactive protein, intra-articular interleukin [IL]-6). No difference in the proportion of patients with moderate/severe pain was found between MP/placebo groups at 24 hours (67% and 74%, χ²?=?.2, P?=?.63, odds ratio = .7, 95% confidence interval = .2–2.8) or at 48 hours (57% and 68%, χ²?=?.5, P?=?.46, odds ratio = .6, 95% confidence interval = .2–2.3), and no difference between groups in postoperative sensitization was found (P?>?.4) despite reduced preoperative intra-articular inflammation (IL-6) in the MP group versus placebo (median change in IL-6 = ?70?pg/mL, interquartile range = ?466 to 0 vs. 32?pg/mL, interquartile range = ?26 to 75, P = .029). Alternative central or peripheral analgesic interventions in this high-risk group are required.

A Trial of a Brief Group-Based Form of Acceptance and Commitment Therapy (ACT) for Chronic Pain in General Practice: Pilot Outcome and Process Results

Acceptance and commitment therapy (ACT) is a developing approach for chronic pain. The current study was designed to pilot test a brief, widely inclusive, local access format of ACT in a UK primary care setting. Seventy-three participants (68.5% women) were randomized to either ACT or treatment as usual (TAU). Many of the participants were aged 65 years or older (27.6%), were diagnosed with fibromyalgia (30.2%) and depression (40.3%), and had longstanding pain (median = 10 years). Standard clinical outcome measures included disability, depression, physical functioning, emotional functioning, and rated improvement. Process measures included pain-related and general psychological acceptance. The recruitment target was met within 6 months, and 72.9% of those allocated to ACT completed treatment. Immediately post treatment, relative to TAU, participants in ACT demonstrated lower depression and higher ratings of overall improvement. At a 3-month follow-up, again relative to TAU, those in ACT demonstrated lower disability, less depression, and significantly higher pain acceptance; d = .58, .59, and .64, respectively. Analyses based on intention-to-treat and on treatment “completers,” perhaps predictably, revealed more sobering and more encouraging results, respectively. A larger trial of ACT delivered in primary care, in the format employed here, appears feasible with some recommended adjustments in the methods used here (Trial registration: ISRCTN49827391).     

Influence of Acceptance and Commitment Therapy Core Processes on Anxiety and Stress in Persons With Spinal Cord Injury: A Cross-sectional Study

ObjectiveTo explore the relationship between the core Acceptance and Commitment Therapy (ACT) processes (mindfulness, self as context, acceptance, defusion, values, and committed action) and anxiety and stress in a sample of individuals with spinal cord injury (SCI).DesignVariance accounted for by ACT on anxiety and stress as outcome variables was examined using multiple linear regression.SettingStudy measures were completed via online survey.Participants159 participants with a SCI completed self-report study measures relevant to the ACT core processes as well as measures of depression, anxiety, and perceived stress.Main Outcome MeasuresOutcome measures included the Spinal Cord Injury—Quality of Life Anxiety subdomain and the Perceived Stress Scale.ResultsHigher reported engagement with acceptance (β=0.238, P=.004), pursuit of values (β=0.187, P<.008), and defusion (β=0.351, P<.001) related to less anxious distress. Perceived stress was predicted by depression (β = 0.230, P=.038) and the ACT core processes as a whole (P<.001).Conclusions: The results of our study indicate that considerable variance in anxiety and stress in individuals with SCI is accounted for by the core processes of ACT. Lower levels of anxiety and stress were predicted by the ACT components as a whole. Anxiety was uniquely predicted by pursuit of values, acceptance, and defusion, indicating these 3 components of ACT may be particularly beneficial in the treatment of anxiety in SCI. These results may provide targeted treatment opportunities via tailored ACT-based interventions.     

Neuropsychological Functioning and Treatment Outcomes in Acceptance and Commitment Therapy for Chronic Pain

Neuropsychological (NP) performance has been associated with psychosocial treatment outcomes in nonpain conditions, but has never been investigated in chronic pain. We performed a secondary analysis on the association of baseline NP performance with treatment outcomes among veterans with chronic pain (N?=?117) undergoing an 8-week acceptance and commitment therapy (ACT) intervention. Participants completed measures of pain interference, pain severity, quality of life, activity levels, depression, and pain-related anxiety at baseline, midtreatment, and post-treatment. Executive functioning, working memory, processing speed, learning, and verbal memory were assessed at baseline. All study measures significantly improved from baseline to post-treatment. NP performance was related to changes in depression and pain-related anxiety during treatment. Specifically, relatively lower executive functioning and processing speed was associated with greater decreases in depressive symptoms, and relatively lower processing speed was associated with greater decreases in pain-related anxiety. Consistent with research in nonpain conditions, those with relatively lower NP functioning received greater benefit from psychosocial treatment, although most study outcomes did not differ as a function of NP performance. Our results suggest relatively lower NP functioning is not contraindicated for participation in psychosocial interventions like ACT but instead may be associated with greater relief.

Multivariate Analysis of Risk Factors Predisposing to Kinesiophobia in Persons With Chronic Low Back and Neck Pain

ObjectiveThe purpose of this study was to analyze the interaction between kinesiophobia and pain-related variables classified according to International Classification of Functioning in individuals with chronic neck and low back pain by using multivariate analysis.MethodsThe 504 persons with chronic neck and low back pain filled out questionnaires assessing impairments in body functions and structures, limitations in activities of daily living, participation, and personal factors. Univariate analyzes were performed to investigate whether there are differences between individuals with and without kinesiophobia or not. Binary logistic regression analysis was used to evaluate whether independent variables were statistically significant predictors.ResultsIn the univariate analyses, the persons who had high-level kinesiophobia had a significantly lower level of education and had significantly higher scores for the Million Visual Analogue Scale, Neck Disability Index, Hospital Anxiety and Depression Scale, and Nottingham Health Profile (P < .001). In the final logistic regression analysis, only educational level (P = .01), Million Visual Analogue Scale (P = .002) and Hospital Anxiety and Depression Scale (P = .008, P = .012) were retained significantly as the predictors of kinesiophobia.ConclusionIn this group of people with chronic neck and low back pain, educational level, low back pain-associated disability, and emotional states like depression and anxiety were associated with kinesiophobia.     

Transcranial Alternating Current Stimulation at Alpha Frequency Reduces Pain When the Intensity of Pain is Uncertain

Alpha activity directly before pain onset has been implicated in pain experience with higher prestimulus alpha associated with lower reported pain. However, expectations about pain intensity also seem to affect prestimulus alpha activity. To date, evidence for a relationship between alpha activity and pain experience has been largely correlational. Transcranial alternating current stimulation at alpha frequency (alpha tACS) permits direct manipulation of alpha activity and therefore an examination of the potential causal relationship between alpha activity and pain. We investigated whether somatosensory alpha tACS could reduce pain experience and whether this was influenced by uncertainty about pain intensity. In a within-subjects design, perceived pain intensity and unpleasantness were assessed in 23 participants during alpha tACS and sham stimulation. Visual cues preceding the pain stimulus were used to manipulate uncertainty. A significant tACS × Uncertainty × Stimulus intensity interaction was found for reported pain intensity (F_2,44?=?4.50, P?=?.017, partial η²?=?.17) and unpleasantness (F_1,22?=?4.78, P?=?.040, partial η²?=?.18). Pain experience during the application of somatosensory alpha tACS was significantly lowered compared with sham stimulation, but only when the intensity of an upcoming stimulus was uncertain.

Kinesiophobia Is Associated With Pain Intensity and Disability in Chronic Shoulder Pain: A Cross-Sectional Study

ObjectiveKinesiophobia is a clinically relevant factor in the management of chronic musculoskeletal pain. The aim of this study was to explore the cross-sectional association between kinesiophobia and both pain intensity and disability among individuals with chronic shoulder pain.MethodsA total of 65 participants with chronic unilateral subacromial shoulder pain were recruited from 3 primary care centers. The Shoulder Pain and Disability Index assessed pain intensity and disability. The Tampa Scale for Kinesiophobia short form assessed the presence of kinesiophobia. A linear multivariable regression analysis evaluated the potential association between kinesiophobia and range of movement free of pain with pain intensity and disability. The analysis was adjusted for sex and age.ResultsIn the linear multivariable regression analysis, only greater kinesiophobia (standardized β = 0.35, P < .01) and sex (standardized β = -0.29, P < .01) contributed to explain 19% of the variance in shoulder pain and disability scores.ConclusionThis cross-sectional study provides preliminary evidence about the association between kinesiophobia and pain intensity and disability among individuals with chronic shoulder pain. However, our findings only contributed to explain 19% of the variance in shoulder pain and disability scores.