Decreased neck muscle strength is highly associated with pain in cervical dystonia patients treated with botulinum toxin injections

OBJECTIVES: To compare the isometric neck muscle strength of cervical dystonia patients treated with botulinum toxin injections with that of healthy control subjects and to evaluate the association between neck strength, neck pain, and disability in these patients. DESIGN: Clinical cross-sectional study. SETTING: Outpatient rehabilitation and neurology clinics in a Finnish hospital. PARTICIPANTS: Twenty-three patients with cervical dystonia with botulinum toxin-treated neck muscles and 23 healthy control subjects. INTERVENTIONS: Not applicable.Main outcome measures Isometric neck strength was measured by a special neck strength measurement system. Disability was measured by the Neck Disability Index, and pain and symptoms of cervical dystonia by a visual analog scale. RESULTS: Isometric neck strength in all directions measured was significantly lower (25%-44%) in the cervical dystonia patients than in the healthy controls. Neck pain levels reported during the strength tests (r range, -.36 to -.70) and neck pain experienced during the preceding week (r range, -.52 to -.63) were inversely associated with isometric strength results. The difference between sides in rotation strength was 35% in the patient group (P<.001), whereas no significant difference between sides was found in the healthy controls. Fifty-one percent of the patients reported moderate or severe disability. Pain, stiffness, and incorrect position of the head were the most prominent symptoms. CONCLUSIONS: Cervical dystonia patients with botulinum toxin-treated neck muscles showed significantly lower maximal neck strength than healthy controls. The patients also had a statistically significant difference between sides in neck rotation strength. Thus, strength measures may be useful to detect disturbance in the function of the neck muscles.     

The association between cognitive factors,pain and disability in patients with idiopathic chronic neck pain

Purpose.?The aim of this study was to establish the relationship between known cognitive factors and levels of pain and disability in patients with idiopathic chronic neck pain.

Method.?Ninety-four patients referred for physiotherapy because of chronic neck pain completed measures of pain, disability, catastrophising, pain-related fear, pain vigilance and awareness and self-efficacy beliefs. Hierarchical multiple regression analyses were then performed to establish whether the cognitive factors were significant determinants of levels of pain and disability.

Results.?The cognitive measures were significantly related to levels of pain and disability, explaining 23% of the variance in pain intensity and 30% of the variance in disability. Specifically, greater catastrophising (β?=?0.37, p?<?0.05) and lower pain vigilance and awareness (β?=???0.32, p?<?0.05) were associated with greater pain intensity. Moreover, greater catastrophising (β?=?0.26, p?<?0.05) and lower functional self-efficacy beliefs (β?=???0.34, p?<?0.001) were significantly associated with greater levels of disability.

Conclusions.?Cognitive factors were strongly related to levels of pain and disability in patients with chronic neck pain. In view of this, targeting the modification of these cognitive factors should be an integral part of therapy when treating patients with idiopathic chronic neck pain.     

Psychometric properties of the Neck Disability Index and Numeric Pain Rating Scale in patients with mechanical neck pain

Cleland JA, Childs JD, Whitman JM. Psychometric properties of the Neck Disability Index and numeric pain rating scale in patients with mechanical neck pain.

Objective

To examine the psychometric properties including test-retest reliability, construct validity, and minimum levels of detectable and clinically important change for the Neck Disability Index (NDI) and the numeric rating scale (NRS) for pain in a cohort of patients with neck pain.

Design

Single-group repeated-measures design.

Setting

Outpatient physical therapy (PT) clinics.

Participants

Patients (N=137) presenting to PT with a primary report of neck pain.

Interventions

Not applicable.

Main Outcome Measures

All patients completed the NDI and the NRS at the baseline examination and at a follow-up. At the time of the follow-up, all patients also completed the global rating of change, which was used to dichotomize patients as improved or stable. Baseline and follow-up scores were used to determine the test-retest reliability, construct validity, and minimal levels of detectable and clinically important change for both the NDI and NRS.

Results

Test-retest reliability was calculated using an intraclass correlation coefficient (ICC) (NDI ICC=.50; 95% confidence interval [CI], .25-.67; NRS ICC=.76; 95% CI, .51-.87). The area under the curve was .83 (95% CI, .75-.90) for the NDI score and .85 (95% CI, .78-.93) for the NRS score for determining between stable and improved patients. Thresholds for the minimum clinically important difference (MCID) for the NDI were 19-percentage points and 1.3 for the NRS.

Conclusions

Both the NDI and NRS exhibit fair to moderate test-retest reliability in patients with mechanical neck pain. Both instruments also showed adequate responsiveness in this patient population. However, the MCID required to be certain that the change in scores has surpassed a level that could be contributed to measurement error for the NDI was twice that which has previously been reported. Therefore the ongoing analyses of the properties of the NDI in a patient population with neck pain are warranted.     

Reliability of isometric strength measurements in trunk and neck region: patients with chronic neck pain compared with pain-free persons

Scheuer R, Friedrich M. Reliability of isometric strength measurements in trunk and neck region: patients with chronic neck pain compared with pain-free persons.

Objective

Evaluation of reliability of isometric strength measurements in the neck and trunk region and comparison of these measurements between patients with chronic neck pain and pain-free subjects.

Design

Nonrandomized controlled trial.

Setting

Institutional practice.

Participants

Patients with neck pain (n=53) and pain-free persons (n=42) (mean age ± SD, 49.7±10.74 vs 48.7±12.02; women, 73% vs 71%).

Interventions

Strength of flexion, extension, and lateral flexion in the neck and trunk were measured. Each participant underwent 2 measurement passes on each of 2 examination days; 3 were performed by the same investigator, 1 by a second.

Main Outcome Measures

Intrarater (short-term and long-term) and interrater reliability, differences in strength between both groups of probands.

Results

Reliability in both groups ranged from substantial to almost perfect (intraclass correlation coefficient: patients, .76–.89; control group, .80–.88). The patients' strength in the neck and trunk was significantly below that of the control group (P<.002).

Conclusions

Isometric strength measurement is a reliable and feasible way to estimate the possible benefit of specific strengthening programs. Patients with chronic neck pain showed strength deficits in all measured regions.     

Promoting physical activity among women with mobility impairments: a randomized controlled trial to assess a home- and community-based intervention

OBJECTIVE: To assess the effectiveness of an intervention to promote physical activity and fitness in physically disabled women. DESIGN: Randomized controlled trial. SETTING: Home or community. PARTICIPANTS: Seventy-five adult women with mobility limitations. INTERVENTION: Incorporated behavioral techniques, social support, and education to promote exercise. MAIN OUTCOME MEASURES: Fitness measures included weight, body mass index, resting blood pressure and heart rate, time to complete a mobility course, and heart rate during and blood pressure after navigating the course. Also collected self-reported experience of secondary conditions and weekly self-reports of physical activity. RESULTS: We found no significant fitness differences between groups, except for peak heart rate. However, paired t tests of the physical activity data revealed the experimental group significantly increased its total weekly physical activity minutes (P=.04), and the increase in weekly cardiovascular activity approached significance (P=.06). CONCLUSIONS: The experimental group did not experience better fitness or fewer secondary conditions than the controls. However, the experimental group's physical activity data indicate that this group significantly increased its activity over 6 months. Thus, although this study did not detect health changes, it showed that mobility-impaired women can adopt and maintain a physical activity program.     

Differences in isometric neck muscle strength between healthy controls and women with chronic neck pain: the use of a reliable measurement

Cagnie B, Cools A, De Loose V, Cambier D, Danneels L. Differences in isometric neck muscle strength between healthy controls and women with chronic neck pain: the use of a reliable measurement.

Objectives

To determine the intra- and interrater reliability of the Biodex isokinetic dynamometer to measure the maximal isometric strength of the cervical flexors and extensors, to develop an age- and sex-based normative database in a healthy population, and to evaluate the differences in neck strength between women with chronic neck pain and healthy controls.

Design

Cross-sectional.

Setting

Physical and rehabilitation medicine department.

Participants

Ninety-six healthy volunteers (4 age groups: 20-29, 30-39, 40-49, 50-59y; each consisting of 12 men and 12 women) and 30 women with chronic neck pain.

Interventions

Not applicable.

Main Outcome Measures

Peak isometric strength of the cervical muscles was tested for flexion and extension by using the Biodex isokinetic dynamometer. The intra- and interrater reliability of the protocol was evaluated in 12 volunteers.

Results

The reliability for strength was high for both flexion and extension (intraclass correlation coefficient, .92-.96). The mean peak torque for flexion and extension was significantly higher in men (24Nm, 36.4Nm, respectively) compared with women (16.6Nm, 26.5Nm, respectively) (P<.001). Peak torque production for extension was significantly lower in the patient group (22.3Nm) compared with the healthy female control group (26.5Nm) (P=.003). No significant differences in flexion strength between patient and female control group were found.

Conclusions

Results show a high degree of intra- and interrater reliability in measuring isometric neck muscle strength when using the Biodex isokinetic dynamometer. The use of normative data for neck strength when evaluating patients with neck disorders needs to take sex into account. The current study has shown that women with chronic neck pain have lower neck muscle strength in extension than the healthy female group.     

Determinants of utilization of physical rehabilitation services for persons with chronic and disabling conditions: an exploratory study

Elrod CS, DeJong G. Determinants of utilization of physical rehabilitation services for persons with chronic and disabling conditions: an exploratory study.

Objective

To determine which variables influence the receipt of physical rehabilitation services (ie, physical, occupational, speech therapy) for a population of people with chronic and disabling conditions.

Design

A convenience sample of 502 adults with cerebral palsy (CP), multiple sclerosis (MS), and spinal cord injury (SCI), drawn from diverse parts of the United States.

Setting

Respondents were surveyed in the general community.

Participants

Persons (91% under the age of 65y) with CP, MS, or SCI who responded to the 1999 component of a national longitudinal survey.

Interventions

Not applicable.

Main Outcome Measures

Self-reported need for physical rehabilitation services. Bivariate and multivariate analyses were used to examine variables that influenced utilization of services.

Results

Some 53% of respondents did not receive self-reported needed physical rehabilitation services. Respondents who had Medicaid were more likely than those with Medicare or private insurance to receive physical rehabilitation services. Respondents having a lower household income and poorer health were less likely to receive services.

Conclusions

Our findings indicate that health care funding sources provide widely disparate coverage for physical rehabilitation services to persons with 3 specific chronic and disabling conditions. Policy-makers and health plan administrators should re-evaluate their coverage of physical rehabilitation services designed to enhance quality of life and reduce the burden of lost independence.     

Presentation 3: Assessing disability in older adults: the effects of asking questions with and without health attribution

Objective: To determine the effects of using questions with and without health attribution on a self-reported disability instrument developed for use with older adults. Design: Cross-sectional. Setting: Community-based. Participants: 75 community-dwelling older adults from central and eastern Massachusetts. Interventions: Not applicable. Main Outcome Measures: We administered the disability component of the Late Life Function and Disability Instrument. To test whether altering attribution influenced scores, we administered the same 16 questions with attribution to specific health conditions. Results: A higher prevalence of disability was reported in the nonattributed compared with the health attribution (t=5.76, P<.001; 95% CI, 3.8-7.8). Item analyses indicated that participants were significantly more likely to report disability on the nonattributed version of 4 of the 16 disability items that required out-of-home travel. Conclusions: In this sample of older adults, estimates of disability were underestimated by questions that included specific attribution to health conditions. Factors other than health appear to influence self-report of disability related to participation in travel outside of the home.     

Decreased isometric neck strength in women with chronic neck pain and the repeatability of neck strength measurements

OBJECTIVES: To evaluate neck flexion, extension, and, especially, rotation strength in women with chronic neck pain compared with healthy controls and to evaluate the repeatability of peak isometric neck strength measurements in patients with neck pain. DESIGN: Cross-sectional. SETTINGS: Rehabilitation center and physical and rehabilitation medicine department at a Finnish hospital. PARTICIPANTS: Twenty-one women with chronic neck pain and healthy controls matched for sex, age, anthropometric measures, and occupation. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Peak isometric strength of the cervical muscles was tested in rotation, flexion, and extension. RESULTS: Significantly lower flexion (29%), extension (29%), and rotation forces (23%) were produced by the chronic neck pain group compared with controls. When the repeated test results were compared pairwise against their mean, considerable variation was observed in the measures on the individual level. Intratester repeatability of the neck muscle strength measurements was good in all the 4 directions tested in the chronic neck pain group (intraclass correlation coefficient range,.74-.94). The coefficient of repeatability was 15N, both in flexion and extension, and 1.8 Nm in rotation. On the group level, improvement up to 10% due to repeated testing was observed. CONCLUSIONS: The group with neck pain had lower neck muscle strength in all the directions tested than the control group. This factor should be considered when planning rehabilitation programs. Strength tests may be useful in monitoring training progress in clinical settings, but training programs should be planned so that the improvement in results is well above biologic variation, measurement error, and learning effect because of repeated testing.     

Kinesiophobia in chronic fatigue syndrome: assessment and associations with disability

OBJECTIVES: To investigate aspects of the validity of the total scores of the Tampa Scale for Kinesiophobia (TSK), Dutch Version, which was modified to make it an appropriate questionnaire for the assessment of kinesiophobia (fear of movement) in chronic fatigue syndrome (CFS) patients (the Dutch TSK-CFS), and, using this assessment tool, to examine the associations between kinesiophobia, exercise capacity, and activity limitations and participation restrictions in patients with CFS. DESIGN: Prospective observational studies. SETTING: An outpatient fatigue clinic. PARTICIPANTS: In the first study, 40 patients fulfilling the 1994 US Centers for Disease Control and Prevention (CDC) criteria for CFS were enrolled. The sample of the second study consisted of 51 CDC-defined patients with CSF. INTERVENTIONS: Not applicable.Main outcome measures Study 1: Subjects completed a set of questionnaires; the Utrechtse Coping List (UCL), the Dutch TSK-CFS, and the Dutch Baecke Questionnaire of Habitual Physical Activity. Study 2: All patients completed 2 questionnaires (Chronic Fatigue Syndrome Activities and Participation Questionnaire [CFS-APQ], Dutch TSK-CFS) and performed a maximal exercise stress test on a bicycle ergometer. The heart rate was monitored continuously by use of an electrocardiograph. Metabolic and ventilatory parameters were measured through spirometry. RESULTS: Study 1: The Cronbach alpha coefficient for the individual item scores on the TSK-CFS was .80. The total scores on the Dutch TSK-CFS showed a statistically significant correlation with both the avoidance/abide subscale of the UCL (Spearman rho=.35, P=.029) and the total score of the Baecke Questionnaire (rho=-.45, P=.004). Study 2: The total scores on the Dutch TSK-CFS showed a statistically significant correlation with the total scores on the CFS-APQ (rho=.39, P=.004). No statistically significant associations were observed between the exercise capacity parameters and the total scores on the Dutch TSK-CFS. CONCLUSIONS: These results provide evidence for the internal consistency and the convergent and congruent validity of the scores obtained by use of the Dutch TSK-CFS. Kinesiophobia appears to be associated with activity limitations/participation restrictions but not with exercise capacity in patients with CFS.     

飞行人员颈部酸痛与颈椎不稳关系的临床研究

目的研究飞行人员常见临床症状颈部酸痛与颈椎不稳的关系，以及这种关系对预防和治疗颈部酸痛的意义。方法回顾性分析56例飞行人员颈部酸痛的动态X线表现，观察颈椎不稳情况，并与同期56例无颈部异常感觉的飞行人员比较。结果颈部酸痛患者中，10例存在节段性颈椎不稳（18％）；对照组2例存在节段性颈椎不稳（4％）；两组间差异显著（P〈0．01）。结论颈部酸痛患者颈椎存在失稳倾向，颈椎失稳可能在颈部酸痛的发生发展过程中起重要作用。     

Raised paraspinal muscle activity reduces rate of stature recovery after loaded exercise in individuals with chronic low back pain

OBJECTIVES: To further the understanding of stature recovery in subjects with and without chronic low back pain (CLBP) and to determine the relations among stature recovery, paraspinal muscle activity, and perceived pain and disability. DESIGN: A case-control study in which stature loss and recovery were assessed in subjects with and without CLBP after a 20-minute loaded walking task (10% of body mass). Group differences in pain, disability, and paraspinal muscle activity were also assessed. SETTING: A university laboratory. PARTICIPANTS: Twenty subjects with CLBP were matched (age, sex, body mass, physical activity level) with 20 controls who were recruited through notices in the university, general community, and local Primary Care Trust. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Stature changes and integrated electromyograms of the paraspinal muscles during a loading and unloading period were assessed. RESULTS: Stature changes after loading did not differ between groups ( P <.05). Subjects with CLBP recovered significantly less stature during unloading than did the controls ( P <.05). Paraspinal muscle activity correlated negatively with stature recovery ( P <.05). Relations among stature recovery, pain, and disability were shown ( P <.05). CONCLUSIONS: The elevated paraspinal muscle activity exhibited by the CLBP group increased compression on the intervertebral disks and diminished their ability to recover the height lost through loaded exercise. Further research is required to establish whether a change in paraspinal muscle activity is associated with corresponding changes in stature recovery, and if this has any clinical implications by reducing pain and disability.     

Obesity prevalence among a group of Chicago residents with disabilities

OBJECTIVE: To examine the prevalence of overweight, obesity, and extreme obesity in a predominantly minority group of adults with disabilities. DESIGN: Cross-sectional study using secondary data analysis. SETTING: Major university medical center. PARTICIPANTS: Adults with physical and cognitive disabilities (N = 306). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Direct measures of height and weight to classify subjects into 3 obesity categories: overweight (body mass index [BMI] range, 25-29.9 kg/m2), obese (BMI range, 30-39.9 kg/m2), and extreme obesity (BMI, > or = 40 kg/m2). RESULTS: People with disabilities, regardless of sex, race and ethnicity, or age, had significantly higher rates of overweight, obesity, and extreme obesity compared with people without disabilities. Extreme obesity (BMI, > or = 40 kg/m2) was approximately 4 times higher among people with disabilities than in the general population (odds ratio = 4.08; 95% confidence interval, 3.50-4.66). There were also substantial differences in obesity prevalence among people with disabilities, using actual measurement data, compared with self-reported data from previously published data sets. CONCLUSIONS: The disparity in excess body weight between people with and without disabilities, particularly in the category of extreme obesity, along with substantial differences in obesity prevalence between actual and self-reported data, show a critical need to better understand why these differences exist.     

Quantitative sensory measures distinguish office workers with varying levels of neck pain and disability

This study was undertaken to investigate any relationship between sensory features and neck pain in female office workers using quantitative sensory measures to better understand neck pain in this group. Office workers who used a visual display monitor for more than four hours per day with varying levels of neck pain and disability were eligible for inclusion. There were 85 participants categorized according to their scores on the neck disability index (NDI): 33 with no pain (NDI<8); 38 with mild levels of pain and disability (NDI 9-29); 14 with moderate levels of pain (NDI30). A fourth group of women without neck pain (n=22) who did not work formed the control group. Measures included: thermal pain thresholds over the posterior cervical spine; pressure pain thresholds over the posterior neck, trapezius, levator scapulae and tibialis anterior muscles, and the median nerve trunk; sensitivity to vibrotactile stimulus over areas of the hand innervated by the median, ulnar and radial nerves; sympathetic vasoconstrictor response. All tests were conducted bilaterally. ANCOVA models were used to determine group differences between the means for each sensory measure. Office workers with greater self-reported neck pain demonstrated hyperalgesia to thermal stimuli over the neck, hyperalgesia to pressure stimulation over several sites tested; hypoaesthesia to vibration stimulation but no changes in the sympathetic vasoconstrictor response. There is evidence of multiple peripheral nerve dysfunction with widespread sensitivity most likely due to altered central nociceptive processing initiated and sustained by nociceptive input from the periphery.     

Cancer screening behaviors among Canadian women living with physical disabilities

OBJECTIVE: To report the prevalence and factors associated with ever having had a Papanicolaou (Pap) test or pelvic examination among Canadian women with physical disabilities and the barriers to having the tests. DESIGN: Cross-sectional survey. SETTING: General community. PARTICIPANTS: Convenience sample of 1095 women between the ages of 18 to 93 completed the survey. The most frequently reported health conditions were musculoskeletal (44%), neurologic (17%), and sensory (13%). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Outcomes included prevalence of ever having a Pap test or pelvic examination and odds ratios of having the tests. RESULTS: Prevalence of ever having a Pap test was 90% and 91% for a pelvic examination. The most common barriers to the screening tests were "not being sexually active," "my doctor told me I do not need one," and "the exam table is too high/narrow." CONCLUSIONS: Although the prevalence of ever having a Pap test or pelvic examination was at or above 90%, women with physical disabilities need further education on the necessity and benefits of having regular cancer screening behaviors, especially among those who may not be sexually active. Further research is also required into why these women are informed that they do not require cancer screening tests.     

An investigation to determine the association between neck pain and upper limb disability for patients with non-specific neck pain: a secondary analysis

This study investigated the relationship between neck pain and upper limb disability in patients with non-specific neck pain (n = 151) recruited from physiotherapy departments in the United Kingdom. Baseline neck pain/disability was measured using the Northwick Park Neck Pain Questionnaire (NPQ). Baseline upper limb disability was measured using the Disabilities of Arm, Shoulder, Hand questionnaire (DASH). A range of baseline psychosocial variables were measured as potential confounding variables. Pairwise analysis revealed a positive correlation between NPQ score and DASH score (Pearsons’ r = 0.799, p < 0.001). After adjusting for potential confounding variables, stepwise linear regression indicated that increasing upper limb disability was predicted by two baseline variables: higher NPQ scores (B = 0.743) and lower pain self efficacy (PSE) scores (B = −0.489) {R² = 0.713; n = 100, p < 0.001}. This study provides preliminary evidence that patients with severe neck pain/disability also report severe upper limb disability. The relationship between neck pain/disability and upper limb disability was mediated by PSE. Clinically, the presence of severe neck pain or low PSE should direct clinicians towards an assessment of upper limb function. In these cases upper limb disability may need to be addressed as part of the neck management process.     

Interrater reliability of the history and physical examination in patients with mechanical neck pain

OBJECTIVE: To examine the interrater reliability of the history and physical examination in patients with mechanical neck pain. DESIGN: Single-group repeated measures for interrater reliability. SETTING: Outpatient physical therapy clinic. PARTICIPANTS: Twenty-two patients with mechanical neck pain underwent a standardized history and physical examination by a physical therapist. INTERVENTION: Following a 5-minute break, a second therapist who was blind to the findings of examiner 1 performed the second standardized history and physical examination. MAIN OUTCOME MEASURES: The Cohen kappa and weighted kappa were used to calculate the interrater reliability of ordinal level data from the history and physical examination. Intraclass correlation coefficients model 2,1 (ICC(2,1)) and the 95% confidence intervals were calculated to determine the interrater reliability for continuous variables. RESULTS: The kappa coefficients ranged from -.06 to .90 for the variables obtained from the history. Reliability values for categorical data collected during the physical examination ranged from no to substantial agreement depending on the particular test and measure. ICC(2,1) for cervical range of motion (ROM) measurements ranged between .66 and .78. CONCLUSIONS: We have reported the interrater reliability of the history and physical examination in a group of patients with a primary report of neck pain. The reliability variables varied considerably for manual assessment techniques and were significantly higher for the examination of muscle length and cervical ROM. Ultimately, it will be up to each clinician to determine if a particular test or measure poses adequate reliability to assist in the clinical decision making process.     

Perceived control is a concurrent predictor of activity limitations in patients with chronic idiopathic axonal polyneuropathy

OBJECTIVES: To investigate (1) whether control perceptions (person's perception of ease or difficulty of performing behavior) and emotions contribute to activity limitations and if so (2) whether these variables mediate the relation between impairment and activity limitations in patients with chronic idiopathic axonal polyneuropathy (CIAP). DESIGN: Cross-sectional study. SETTING: Outpatient clinics of a university medical center. PARTICIPANTS: Fifty-six patients diagnosed with CIAP. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Control perceptions about performing activities (questionnaire based on the theory of planned behavior), emotions (Hospital Anxiety and Depression Scale), activity limitations (performance: Shuttle Walk Test [SWT]; self-report: Medical Outcomes Study 36-Item Short-Form Health Survey [SF-36] physical functioning subscale, self-reported ability to walk), and physical impairments (muscle strength, sensory function). RESULTS: Control perceptions significantly (P<.01) correlated with all measures of activity limitations (r range, .58-.69). Hierarchical multiple regression analyses showed that perceived control explained 9% of the variance in the SWT (beta=.34, P<.01), 12% in the SF-36 (beta=.40, P<.01), and 24% in ability to walk (beta=.54, P<.01). In all measures of activity limitations, perceived control significantly mediated the effect of impairment. CONCLUSIONS: Perceived control explained and mediated variance in activity limitations, whereas emotions did not. This suggests that increasing patients' perceptions of control might enhance performance of activities, even without changes in impairment.     

Changes in proprioception and pain in patients with neck pain after upper thoracic manipulation

[Purpose] The purpose of this study was to conduct cervical stability training and upperthoracic manipulation for patients with chronic neck pain and then investigate the changesof cervical proprioception and pain. [Subjects and Methods] Subjects were 30 workers withmechanical neck pain, who were randomly divided into an upper thoracic manipulation groupand a cervical stability training group. Upper thoracic manipulation after cervicalstability training was conducted for the upper thoracic manipulation group, and onlystability training was conducted for the cervical stability training group. Theintervention period was six weeks, and consisted of three sessions a week, each of whichlasted for 30 minutes. For proprioception measurement, an electro-goniometer was used tomeasure reposition sense before and after the intervention. The visual analogue scale wasused to assess pain. [Results] After the intervention, the error angle was significantlysmaller in flexion and right left side-bending, and pain was significantly reduced in theupper thoracic manipulation group. According to the post intervention comparison of thetwo groups, there were significant differences in the proprioception and pain values.[Conclusion] Conducting both cervical stability training and upper thoracic manipulationfor patients with chronic neck pain was more helpful for the improvement of proprioceptionand pain than cervical stability training alone.     

The effects of neck mobilization in patients with chronic neck pain: A randomized controlled trial

Objective

To determine the effect of mobilization and routine physiotherapy on pain, disability, neck range of motion (ROM) and neck muscle endurance (NME) in patients having chronic mechanical neck pain (NP).