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OBJECTIVES: Many people with chronic pain cannot work, while working despite chronic pain is linked to absenteeism and presenteeism and a host of other deleterious effects. This disproportionately affects older adults, who are closer to retirement, while the exact relationship between pain and work cessation as well as retirement among older adults is not known. We explore longitudinally the relationship between chronic pain and the risk of ceasing work and entering retirement. METHODS: Data from 1156 individuals 50 years or older living in England taking part in the English Longitudinal Study of Ageing were used in this study. Cox proportional hazards regression analyses were used to examine the nature of the relationship between musculoskeletal pain and work cessation as well as retirement longitudinally over the course of fourteen years. RESULTS: Suffering from frequent musculoskeletal pain was associated with an increased risk of ceasing work and retiring at an earlier age, as did work dissatisfaction, higher perceived social status, female gender, and not receiving the recognition they felt they deserved in their job. Severity of depressive symptoms, psychosocial job demands, decision authority, and social support did not influence the age at which participants reported work cessation or retirement. CONCLUSIONS: Frequent musculoskeletal pain may increase the risk of earlier work exit and earlier retirement. Further research should establish the mechanisms and decision making involved in leaving the workforce in people with frequent musculoskeletal pain.

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OBJECTIVES: Chronic pain is a significant societal problem and pain complaints are one of the main causes of work absenteeism and emergency room visits. Physical activity has been associated with reduced risk of suffering from musculoskeletal pain complaints, but the exact relationship in an older adult sample is not known. METHODS: Participants self-reported their physical activity level and whether they were often troubled by bone, joint, or muscle pain. Logistic regression analyses revealed the nature of the relationship between musculoskeletal pain and physical activity cross-sectionally and longitudinally over the course of 10 years. Data were taken from the English Longitudinal Study of Ageing, comprising of 5802 individuals residing in England aged 50 or older. RESULTS: Only high levels of physical activity were associated with a reduced risk of suffering from musculoskeletal pain compared to a sedentary lifestyle longitudinally. In addition, having low wealth, being female, and being overweight or obese were found to be risk factors for suffering from musculoskeletal pain. CONCLUSIONS: The development of interventions aimed at alleviating and preventing musculoskeletal pain complaints might benefit from incorporating physical activity programs, weight loss, and aspects addressing wealth inequality to maximise their efficacy.

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Patients' presurgical psychological profiles have been posited to predict pain and function following arthroplastic surgery of the hip and knee. Nevertheless, findings are conflicting, and this may be rooted in biased reporting that makes the determination of evidential value difficult. This ambiguity may have negative consequences for researchers and governmental agencies, as these rely on findings to accurately reflect reality. P-Curve analyses were used to establish the presence of evidential value and selective reporting in a sample of studies examining the effect of presurgical psychological predictors on outcomes following knee and hip arthroplastic surgery. A systematic search of the literature revealed 26 relevant studies. The examined sets of studies indicate that there is evidential value for the effect of depression on pain intensity and function, anxiety on pain intensity and function, pain catastrophizing on pain intensity, as well as the combined effects of all psychological predictors on pain intensity and function. The presence of evidential value was inconclusive for the effect of optimism on pain intensity. There were no signs that any results were influenced by biased reporting. The results highlight the importance of patients' psychological profiles in predicting surgical outcomes, which represent a promising avenue for future treatment approaches. PERSPECTIVE: The effects of P-hacking are difficult to detect and might be at the root of conflicting findings pertaining to the predictive properties of presurgical psychological variables on postsurgical outcomes. P-Curve analysis allows the determination of evidential value underlying these relationships and detection of P-hacking to ensure that findings are not the result of selective reporting.

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OBJECTIVE: To identify modifiable risk factors for development and progression of frailty in older adults living in England, as conceptualised by a multidimensional frailty index (FI). METHODS: Data from participants aged 50 and over from the English Longitudinal Study of Ageing (ELSA) was used to examine potential determinants of frailty, using a 56-item FI comprised of self-reported health conditions, disabilities, cognitive function, hearing, eyesight, depressive symptoms and ability to carry out activities of daily living. Cox proportional hazards regression models were used to measure frailty development (n = 7420) and linear regression models to measure frailty progression over 12 years follow-up (n = 8780). RESULTS: Increasing age (HR: 1.08 (CI: 1.08-1.09)), being in the lowest wealth quintile (HR: 1.79 (CI: 1.54-2.08)), lack of educational qualifications (HR: 1.19 (CI: 1.09-1.30)), obesity (HR: 1.33 (CI: 1.18-1.50) and a high waist-hip ratio (HR: 1.25 (CI: 1.13-1.38)), being a current or previous smoker (HR: 1.29 (CI: 1.18-1.41)), pain (HR: 1.39 (CI: 1.34-1.45)), sedentary behaviour (HR: 2.17 (CI: 1.76-2.78) and lower body strength (HR: 1.07 (CI: 1.06-1.08)), were all significant risk factors for frailty progression and incidence after simultaneous adjustment for all examined factors. CONCLUSION: The findings of this study suggest that there may be scope to reduce both frailty incidence and progression by trialling interventions aimed at reducing obesity and sedentary behaviour, increasing intensity of physical activity, and improving success of smoking cessation tools. Furthermore, improving educational outcomes and reducing poverty may also reduce inequalities in frailty.

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UNLABELLED: The present study examined whether pain catastrophizing and pain-related fear predict the experience of pain in body regions that are not targeted by an experimental muscle injury protocol. A delayed-onset muscle soreness (DOMS) protocol was used to induce pain unilaterally in the pectoralis, serratus, trapezius, latissimus dorsi, and deltoid muscles. The day after the DOMS protocol, participants were asked to rate their pain as they lifted weighted canisters with their targeted (ie, injured) arm and their nontargeted arm. The lifting task is a nonnoxious stimulus unless participants are already experiencing musculoskeletal pain. Therefore, reports of pain on the nontargeted arm were operationalized as pain in response to a nonnoxious stimulus. Eighty-two healthy university students (54 men, 28 women) completed questionnaires on pain catastrophizing and fear of pain and went through the DOMS protocol. The analyses revealed that catastrophizing and pain-related fear prospectively predicted pain experience in response to a nonnoxious stimulus. The possible mechanisms underlying this effect and clinical implications are discussed. PERSPECTIVE: Pain catastrophizing and fear of pain prospectively predict the pain experience in response to a nonnoxious stimulus. The pattern of findings is consistent with the predictions of current models of generalization of pain-related fear.

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UNLABELLED: The present study examined the prospective value of pain catastrophizing, fear of pain, and depression in the prediction of multisite musculoskeletal pain following experimentally induced delayed-onset muscle soreness (DOMS). The study sample consisted of 119 (63 females, 56 males) healthy university students. Measures of pain catastrophizing, fear of pain, and depression were completed prior to the DOMS induction procedure. Analyses revealed that pain catastrophizing and fear of pain prospectively predicted the experience of multisite pain following DOMS induction. Analyses also revealed that women were more likely to experience multisite pain than men. There was no significant relation between depressive symptoms and the experience of multisite pain. The discussion addresses the mechanisms by which pain catastrophizing and fear of pain might contribute to the spreading of pain. Clinical implications of the findings are also addressed. PERSPECTIVE: The results of this experimental study suggest that pain catastrophizing and fear of pain might increase the risk of developing multisite pain following musculoskeletal injury.

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PURPOSE: The aim of the present study was to investigate the factors that influence the change in pain catastrophizing during the course of a physical therapy intervention for musculoskeletal injury. METHODS: 187 clients enrolled in a 7-week physical therapy intervention were divided into four mutually exclusive groups on the basis of a pre-treatment assessment: (1) clients whose pre-treatment catastrophizing scores and measures of mental health problems were below clinical threshold, (2) clients whose pre-treatment catastrophizing scores were above clinical threshold but who scores on measures of mental health problems were below clinical threshold, (3) clients whose pre-treatment catastrophizing scores were above clinical threshold and whose scores on measures of mental health problems were also above clinical threshold, and (4) clients whose pre-treatment catastrophizing scores were below clinical threshold but whose scores on measures of mental health problems were above clinical threshold. RESULTS: The most prevalent risk profile consisted of clients with high levels of pain catastrophizing and high mental health problems (37 %), followed by the low catastrophizing and low mental health problems profile (35 %), the high catastrophizing and low mental health problems profile (16 %), and low catastrophizing and high mental health problems profile (10 %). Clients were considered non-responders if their post-treatment catastrophizing score remained above clinical threshold following treatment. Chi square analyses revealed a significantly higher proportion of non-responders in the high catastrophizing and mental health problem group than in any other group. CONCLUSIONS: The presence of mental health symptoms markedly reduces the effectiveness of physical therapy for reducing catastrophizing scores. The 'risk value' of high catastrophizing scores thus appears to vary as a function of the presence or absence of mental health symptoms. The findings argue for the inclusion of measures of mental health problems in the routine screening of individuals treated in physical therapy.

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