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Pain is perceived not only by personal experience, but also vicariously. Pain empathy is the ability to share and understand other's intentions and emotions in their painful conditions, which can be divided into cognitive and emotional empathy. It remains unclear how centrally acting analgesics would modulate brain activity related to pain empathy, and which component of pain empathy would be altered by analgesics. In this study, we examined the effects of the analgesic tramadol on the brain activity for pain empathy in healthy adults. We used two tasks to assess brain activity for pain empathy. In experiment 1, we used a well-established picture-based pain empathy task involving passive observation of other's pain. In experiment 2, we developed a novel pain empathy task to assess brain activity during cognitive and emotional empathy for pain separately in a single task. We conducted a double-blind, placebo-controlled within-subject cross-over study with functional magnetic resonance imaging for 33 participants in experiment 1 and 31 participants in experiment 2, respectively. In experiment 1, we found that tramadol decreased activation in the supramarginal gyrus (SMG) during observation of other's pain compared to placebo. SMG activation correlated negatively with the thermal pain threshold. In experiment 2, we found that tramadol decreased activation in angular gyrus in cognitive empathy for pain compared to placebo, but didn't change brain activity in emotional empathy for pain. PERSPECTIVE: Centrally acting analgesics such as tramadol may have not only analgesic effects on self-experienced pain, but also on the complex neural processing of pain empathy. DATA AVAILABILITY: Data are available on reasonable request from the corresponding author.

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Purpose of Review: The brain's salience network (SN), primarily comprising the anterior insula and anterior cingulate cortex, plays a key role in detecting salient stimuli and processing physical and socioemotional pain (e.g., social rejection). Mounting evidence underscores an altered SN in the etiology and maintenance of substance use disorders (SUDs). This paper aims to synthesize recent functional neuroimaging research emphasizing the SN's involvement in SUDs and physical/socioemotional pain and explore the therapeutic prospects of targeting the SN for SUD treatment. Recent Findings: The SN is repeatedly activated during the experience of both physical and socioemotional pain. Altered activation within the SN is associated with both SUDs and chronic pain conditions, characterized by aberrant activity and connectivity patterns as well as structural changes. Among individuals with SUDs, functional and structural alterations in the SN have been linked to abnormal salience attribution (e.g., heightened responsiveness to drug-related cues), impaired cognitive control (e.g., impulsivity), and compromised decision-making processes. The high prevalence of physical and socioemotional pain in the SUD population may further exacerbate SN alterations, thus contributing to hindered recovery progress and treatment failure. Interventions targeting the restoration of SN functioning, such as real-time functional MRI feedback, neuromodulation, and psychotherapeutic approaches, hold promise as innovative SUD treatments. Summary: The review highlights the significance of alterations in the structure and function of the SN as potential mechanisms underlying the co-occurrence of SUDs and physical/socioemotional pain. Future work that integrates neuroimaging with other research methodologies will provide novel insights into the mechanistic role of the SN in SUDs and inform the development of next-generation treatment modalities.

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Introduction: While the relationship between narcissism and empathy has been well-researched, studies have paid less attention to empathic accuracy, i.e., appreciating the precise strength of another person's emotions, and self-other distinction, in terms of the disparity between affective ratings for self and other in response to emotive stimuli. Furthermore, empathic responses may vary depending on whether the pain is physical or social. Methods: We investigated empathic accuracy, affective empathy, and the distinction between pain, emotion and intensity ratings for self and other, in high (n = 44) and low (n = 43) narcissism groups (HNG and LNG, respectively) selected from 611 students, in response to both types of pain. Participants watched six videos where targets expressed genuine experiences of physical and social pain, and rated the perceived affect and pain experienced by the person in the video and their own empathic emotional responses. Results and discussion: The HNG displayed lower affective empathy and empathic accuracy than the LNG for both pain types. Within the HNG there was higher empathic accuracy for social vs. physical pain, despite reduced affective empathy for social pain, in contrast to the LNG. In addition to this paradox, the HNG demonstrated greater differences between ratings for the self and for target others than the LNG, suggesting that narcissism is associated with higher self-other distinction in response to viewing other people describing social pain.

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PURPOSE OF REVIEW: Physical pain is an underrecognized area of dysregulation among those with borderline personality disorder (BPD). Disturbances are observed within the experience of acute, chronic, and everyday physical pain experiences for people with BPD. We aimed to synthesize research findings on multiple areas of dysregulation in BPD in order to highlight potential mechanisms underlying the association between BPD and physical pain dysregulation. RECENT FINDINGS: Potential biological mechanisms include altered neural responses to painful stimuli within cognitive-affective regions of the brain, as well as potentially low basal levels of endogenous opioids. Emotion dysregulation broadly mediates dysregulation of physical pain. Certain psychological experiences may attenuate acute physical pain, such as dissociation, whereas others, such as negative affect, may exacerbate it. Social challenges between patients with BPD and healthcare providers may hinder appropriate treatment of chronic pain. Dysregulated physical pain is common in BPD and important in shaping health outcomes including elevated BPD symptoms, chronic pain conditions, and risk for problematic substance use.

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BACKGROUND: Studies conducted in Western societies have identified variables associated with chronic pain, but few have done so across cultures. Our study aimed to clarify the relationship between specific mental health markers (i.e., depression, anxiety, posttraumatic stress disorder [PTSD], perceived stress) as well as specific protective factors (i.e., social support and self-efficacy) related to physical pain among university students across non-WEIRD and WEIRD samples. METHOD: A total of 188 university students (131 women and 57 men) were included in the study. We used network analysis to ascertain mental health markers especially central to the experience of physical pain. RESULTS: No statistically significant difference was found between mental health markers (i.e., depression, anxiety, perceived stress, and PTSD) and protective factors (i.e., social support and self-efficacy) associated with physical pain symptoms for Swiss students versus Indian students (M = 0.325, p = .11). In addition, networks for Swiss versus Indian students did not differ in global strength (S = 0.29, p = .803). Anxiety was the most central mental health marker, and social support was the most important protective factor related to physical pain in both countries. However, for Swiss students, perceived stress, and for Indian students, PTSD symptoms were central mental health markers related to physical pain. CONCLUSION: Our results identify factors that may serve as important treatment targets for pain interventions among students of both countries before it becomes chronic.

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Background: Previous physiology-driven pain studies focused on examining the presence or intensity of physical pain. However, people experience various types of pain, including social pain, which induces negative mood; emotional distress; and neural activities associated with physical pain. In particular, comparison of autonomic nervous system (ANS) responses between social and physical pain in healthy adults has not been well demonstrated. Methods: We explored the ANS responses induced by two types of pain-social pain, associated with a loss of social ties; and physical pain, caused by a pressure cuff-based on multimodal physiological signals. Seventy-three healthy individuals (46 women; mean age = 20.67 ± 3.27 years) participated. Behavioral responses were assessed to determine their sensitivity to pain stimuli. Electrocardiogram, electrodermal activity, photoplethysmogram, respiration, and finger temperature (FT) were measured, and 12 features were extracted from these signals. Results: Social pain induced increased heart rate (HR) and skin conductance (SC) and decreased blood volume pulse (BVP), pulse transit time (PTT), respiration rate (RR), and FT, suggesting a heterogeneous pattern of sympathetic-parasympathetic coactivation. Moreover, physical pain induced increased heart rate variability (HRV) and SC, decreased BVP and PTT, and resulted in no change in FT, indicating sympathetic-adrenal-medullary activation and peripheral vasoconstriction. Conclusion: These results suggest that changes in HR, HRV indices, RR, and FT can serve as markers for differentiating physiological responses to social and physical pain stimuli.

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BACKGROUND AND OBJECTIVES: Little is known about the prevalence of physical pain among family caregivers to older adults. We used national survey data to assess the relative prevalence of caregivers' arthritis and activity-limiting bothersome pain by caregiver and care-recipient characteristics to identify which caregivers may be at a higher risk for physical pain. RESEARCH DESIGN AND METHODS: We analyzed data collected from 1,930 caregivers who participated in the National Study on Caregiving (2017). We utilized modified Poisson models to estimate adjusted associations of caregiver and care-recipient characteristics with the relative prevalence of arthritis and bothersome pain. RESULTS: Forty percent of caregivers had a lifetime diagnosis of arthritis. Seventy-five percent of caregivers with arthritis reported bothersome pain, nearly 30% of whom endorsed bothersome pain that limited their activities on most or every day of the previous month (i.e., activity-limiting bothersome pain). Regardless of whether they had arthritis, 51% of the sample reported bothersome pain in the previous month, 24% of whom indicated activity-limiting bothersome pain. Caregivers who were older or more highly educated had a higher prevalence of arthritis. Black caregivers had a lower prevalence of arthritis and activity-limiting bothersome pain compared to White caregivers. Caregivers with physical difficulty providing care had a higher prevalence of arthritis and activity-limiting bothersome pain than caregivers without physical difficulty providing care. DISCUSSION AND IMPLICATIONS: Arthritis and activity-limiting bothersome pain are highly prevalent among caregivers. Given increased prevalence of pain among certain caregivers, it may be efficient to target these groups for pain management interventions.

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Physical pain has trended upward globally over the last decade. Here, we explore whether the COVID-19 pandemic modified this alarming trend. We used data from 146 countries worldwide (510,247 respondents) to examine whether pain levels changed during the COVID-19 pandemic. Adjusted regressions across countries revealed that 33.3% of people were in pain in 2019, 32.8% in 2020, 32.5% in 2021, and 34.1% in 2022. The change in pain from 2019 to each of the pandemic years was not statistically significant. This suggests that, on average, there was no significant change in pain during the pandemic. However, from 2019 to 2020 there was a significant decline in pain among individuals over 55 years of age, those who were widowed, and those without children in the household. On a global scale, the COVID-19 pandemic was not associated with a significant change in pain levels. The concerning pre-pandemic elevation in global pain continued during this challenging period.

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The present study examines the 8-year course of physical pain and its interference with functioning in patients with borderline personality disorder (BPD) and a comparison group of patients with other personality disorders (other-PD). Participants completed the Brief Pain Inventory (BPI) at five assessments, each separated by 2 years. Results showed that across all 13 domains assessed, participants with BPD reported significantly higher levels of acute physical pain and its functional interference than other-PD comparison subjects. The severity of physical pain and its interference with multiple domains of functioning were relatively stable over 8 years of assessment for both study groups. Within the BPD group, pain was significantly associated with older age, comorbid major depressive disorder (MDD), and history of a physically violent partner. Taken together, these results suggest that physical pain is a serious health issue for individuals with BPD that interferes with functioning across a wide spectrum of areas.

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Purpose: Patients with major depressive disorder (MDD) may experience more frequent and severe psychological and physical pain complaints compared to those without depression. As the tolerance to psychological pain decreases in patients with MDD, the severity of suicidal ideation tends to increase. Furthermore, the tolerance for physical pain (TPP) has been related with suicidal behavior. We aimed to demonstrate the impact of TPP on suicidal ideation in patients with MDD in the presence of psychological pain. Patients and Methods: We included 123 patients with MDD and 114 healthy volunteers who had no previous psychiatric diagnosis. Sociodemographic data form, Psychache Scale (PS) and Tolerance for Mental Pain Scale (TMPS) were used to assess psychological pain. Beck Scale for Suicide Ideation (BSIS) and Beck Depression Inventory (BDI) were administered to participants. To assess the TPP, we used a device based on the principle of electronic dynamometry. Results: The mean BDI, BSIS, PS, and TPP scores in the MDD group were higher, and the mean TMPS score was lower than those in the control group (p < 0.001 for each, p = 0.03 for TPP). We found statistically significant correlations between BDI, TMPS, BSIS, PS, and TPP scores (p < 0.05 for each). TPP was a partial mediator in the relationship between TMPS and BSIS scores (ß = -1.814; p < 0.001). Conclusion: We found that tolerance of psychological pain was a strong predictor of suicidal ideation, and TPP was mediating this relationship. These findings suggest that considering both tolerance to psychological pain and TPP may be beneficial when assessing the risk of suicide in individuals with MDD.

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Introduction: Recent studies have shown that processing semantic pain, such as words associated with physical pain, modulates pain perception and enhances activity in regions of the pain matrix. A direct comparison between activations due to noxious stimulation and processing of words conveying physical pain may clarify whether and to what extent the neural substrates of nociceptive pain are shared by semantic pain. Pain is triggered also by experiences of social exclusion, rejection or loss of significant others (the so-called social pain), therefore words expressing social pain may modulate pain perception similarly to what happens with words associated with physical pain. This event-related fMRI study aims to compare the brain activity related to perceiving nociceptive pain and that emerging from processing semantic pain, i.e., words related to either physical or social pain, in order to identify common and distinct neural substrates. Methods: Thirty-four healthy women underwent two fMRI sessions each. In the Semantic session, participants were presented with positive words, negative pain-unrelated words, physical pain-related words, and social pain-related words. In the Nociceptive session, participants received cutaneous mechanical stimulations that could be either painful or not. During both sessions, participants were asked to rate the unpleasantness of each stimulus. Linguistic stimuli were also rated in terms of valence, arousal, pain relatedness, and pain intensity, immediately after the Semantic session. Results: In the Nociceptive session, the 'nociceptive stimuli' vs. 'non-nociceptive stimuli' contrast revealed extensive activations in SI, SII, insula, cingulate cortex, thalamus, and dorsolateral prefrontal cortex. In the Semantic session, words associated with social pain, compared to negative pain-unrelated words, showed increased activity in most of the same areas, whereas words associated with physical pain, compared to negative pain-unrelated words, only activated the left supramarginal gyrus and partly the postcentral gyrus. Discussion: Our results confirm that semantic pain partly shares the neural substrates of nociceptive pain. Specifically, social pain-related words activate a wide network of regions, mostly overlapping with those pertaining to the affective-motivational aspects of nociception, whereas physical pain-related words overlap with a small cluster including regions related to the sensory-discriminative aspects of nociception. However, most regions of overlap are differentially activated in different conditions.

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Postpartum pain is one of the most important and common problems of postpartum mothers who resort to non-pharmacological strategies to relieve it due to the side effects of painkillers. This study was conducted to investigate the relationship between religiosity and postpartum physical and perineal pain. The sample size in this cross-sectional study was 101 women giving birth in educational and medical centers of Shiraz, Iran, that was selected by purposive-convenience sampling. Then, a questionnaire was completed for each of them including demographic characteristics, religious attitude, and visual scale of postpartum pain. Data were analyzed by SPSS software. The frequency of the majority of the research population was found at moderate religious attitudes 65.4% (72 individuals). There is a positive and Statistical inverse correlation between religious attitude and perineal pain. According to Fisher's test, in mothers with a high religious attitude, 9.7% had severe perineal pain, 41.9% had moderate pain, and 48.4% had mild pain (p = 0.001). Besides, in the case of physical pain, 3.2%, 35.5%, and 61.3% had severe, moderate, and mild pain, respectively. Regarding physical pains, with the increase in the level of mothers' religious attitude, physical pains also decreased, but the statistical relationship was not significant (p = 0.32). The results showed that the religiosity and spirituality of pregnant women have relieving effects on postpartum pain. Therefore, more attention to the spiritual dimension of human existence and planning to improve it using prayer therapy, dhikr, and meditation is suggested as a strategy to deal with the fear of pain and childbirth and reduce psychological and physical changes before and after childbirth. These findings apply to women with ectopic pregnancies in Iran.

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Physical pain is a common health problem with great public health implications. Yet evidence on whether adverse employment circumstances shape physical pain is limited. Using longitudinal data from 20 waves (2001-2020) from the Household, Income and Labour Dynamics of Australia Survey (HILDA; N = 23,748), a lagged design, Ordinary Least Squares (OLS) regressions as well as multilevel mixed effect linear regressions, we investigated the association between past accumulated unemployment and recent employment circumstances with physical pain. We found that adults who spent more years unemployed and looking for work subsequently reported greater physical pain (b = 0.034, 95% CI = 0.023, 0.044) and pain interference (b = 0.031, 95% CI = 0.022, 0.038) than those who spent fewer years unemployed. We also found that those experiencing overemployment (working full-time while wanting to work fewer hours) and underemployment (working part-time while wanting to work more hours) reported greater subsequent physical pain (overemployment: b = 0.024, 95% CI = 0.009, 0.039; underemployment: b = 0.036, 95% CI = 0.014, 0.057) and pain interference (overemployment: b = 0.017, 95% CI = 0.005, 0.028; underemployment: b = 0.026, 95% CI = 0.009, 0.043) than those content with their working hours. These results held after controlling for socio-demographic characteristics, occupation, and other health-related factors. These findings are consistent with recent work that suggested that psychological distress can influence physical pain. Understanding how adverse employment circumstances impact physical pain is crucial to the design of health promotion policies.

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This study investigated whether level of social support would decrease emotional distress and physical pain sensitivity following rejection. Healthy undergraduate students received varying levels of social support from a close companion during the Partial Future Life Alone rejection paradigm. Participants also completed baseline and post-stressor measures of physical pain sensitivity as well as post-stressor measures of emotional distress. Results indicated that all levels of social support benefited rejected participants by either buffering and/or improving fundamental needs, mood, and pain to levels comparable to non-rejected participants; however, passive support resulted in the fewest beneficial outcomes. The current study provides preliminary evidence that even minimal levels of support during rejection benefits or at least neutralizes associated pain and distress outcomes.

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In the United States, mortality due to alcohol, opioid overdose, and suicide has increased dramatically in the last decades. These deaths of despair have been the focus of recent and fast-growing literature. Yet little is known about the factors that are involved in despair. This article moves this area of research forward by highlighting the role that physical pain plays in the deaths of despair. This piece critically analyses the link between physical pain, the psychological states that precede pain, and the premature mortality that follows physical pain as well as the bidirectional relationships among these aspects.

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Existing evidence suggests a link between physical pain and suicide, but the nature of this relationship remains unknown. To address this critical gap in knowledge, the present study leveraged a validated virtual reality (VR) suicide paradigm to experimentally examine the causal effects of physical pain on subsequent virtual suicidal behaviors. Based on previous findings, we hypothesized that physical pain would causally drive virtual suicidal behavior only if suicide was conceptualized as having desirable anticipated consequences (e.g., a means of escaping from current pain; an opportunity to avoid future pain). We tested this by randomizing 326 participants across four different conditions: a physical pain condition, an anticipated escape condition, an anticipated avoidance condition, and a control condition. As predicted, physical pain alone did not result in statistically significant increases in VR suicide rates; however, the anticipation that virtual suicidal behavior would result in the avoidance of future physical pain had a large causal effect on VR suicide rates (B = 1.61, p < .001, IRR = 5.01). We failed to find evidence that anticipating that VR suicide would provide an escape from currently experienced physical pain increases the likelihood of VR suicide. Our findings add to a growing body of evidence suggesting that the anticipated consequences of suicide (e.g., avoidance of future physical pain) may serve as primary causes of suicidal behavior.

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OBJECTIVE: Prior studies suggest that prosocial behaviour can lead to better mental and physical health. Yet little is known about whether engaging in prosocial behaviour contributes to reducing physical pain. The objective of this study is to investigate longitudinal associations of two prosocial behaviours, donating money to charity and/or volunteering time to an organisation, with pain. METHODS: Data are from the United Kingdom Household Longitudinal Survey (UKHLS, approximate N = 48,000 individuals). Both prosocial behaviours were assessed in 2011 and pain was assessed annually through 2020, according to the extent to which it interfered with respondents' ability to do work. Using a prospective longitudinal study design, linear mixed models examined associations of each prosocial behaviour separately and both combined on pain interference across 10 years of follow-up adjusting for a broad range of covariates including demographics, initial health status, and depression. RESULTS: People who did versus did not donate or volunteer reported lower pain interference over 10 years of follow-up (donating b = -0.059, p < 0.001; volunteering b = -0.086, p < 0.001). Individuals who donated more versus less money reported lower pain interference although volunteering more hours was not associated with lower pain interference. Finally, findings suggested that engaging in both donating and volunteering versus neither was associated with lower pain interference over follow-up. CONCLUSION: There is a longitudinal association between donating money to charity and/or volunteering time to an organisation with pain interference with work. Understanding factors that help to reduce pain is relevant for the design of public health policies.

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Self-reported pain levels have been associated with increased stress levels during the COVID-19 pandemic. Less is known about the long-term effects of stress on individuals' physical and emotional pain levels and their associations with the neuropeptide hormone oxytocin. We aimed to predict momentary pain through individual stress levels and momentary oxytocin levels at genuinely high-stress phases, namely during COVID-related lockdowns. In a cross-sectional (n = 254) and a longitudinal (n = 196) assessment during lockdowns in Germany, participants completed a 2-day ecological momentary assessment (EMA) protocol (collecting six saliva samples on two consecutive days each and simultaneously reporting on stress, physical, and emotional pain levels) in 2020, as well as one year later, in 2021. Hierarchical linear modeling revealed significant positive associations between individuals' stress levels and physical pain, both cross-sectionally (b = 0.017; t(103) = 3.345; p = 0.001) and longitudinally (b = 0.009; t(110) = 2.025; p = 0.045). Similarly, subjective stress ratings showed significant positive associations with emotional pain on a within-person (b = 0.014; t(63) = 3.594; p < 0.001) as well as on a between-person (b = 0.026; t(122) = 5.191; p < 0.001) level. Participants further displayed significantly lower salivary oxytocin when experiencing higher levels of emotional pain (b = -0.120; t(163) = -2.493; p = 0.014). In addition, high-stress levels significantly moderated the association between physical pain and salivary oxytocin (b = -0.012; t(32) = -2.150; p = 0.039). Based on mechanistic and experimental research, oxytocinergic mechanisms have long been suggested to modulate pain experiences, however, this has not yet been investigated in everyday life. Our data, which was collected from a large sample experiencing continued stress, in this case, during the COVID-19 pandemic, suggests that individuals experience more intense physical pain and elevated stress levels, as shown by particularly low salivary oxytocin concentrations.

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Physical pain is a major public health concern. Yet evidence on trends in physical pain around the world barely exists. Using nationally representative data from 146 countries (N = 1.6 million respondents), this paper finds that, all over the world, the percentage of people in pain increased from 26.3 in 2009 to 32.1 in 2021. This rising trend was present in both higher- and lower-income countries. This article also documents pain disparities: In the worldwide population, pain grew faster among women, the less educated, and the poor. Although the aggregate level of pain was greater among the elderly (> 60 years old), the growth in pain was faster among the younger (< 35 years old). These findings hold after controlling for sociodemographic factors. Disparities of pain growth in higher- and lower-income nations and potential explanatory factors are also discussed. Understanding how the level of pain varies over time and across demographic groups is crucial to evaluate and shape public health policies.

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BACKGROUND: Video gaming is a recreational activity with yearly increasing popularity. It is mostly a sedentary behavior combined with repetitive movements of the upper limbs. If performed excessively, these movements may promote strain injuries and a sedentary lifestyle is one of the contributing factors to musculoskeletal disorders. Therefore, a systematic review was conducted to evaluate if video gaming negatively affects the musculoskeletal system of video gamers. METHODS: PubMed, Web of Science and The Cochrane Library were systematically searched in order to identify relevant peer reviewed original articles in English published between 2000 and 2021. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method was used for the analysis. Studies were included when they contained investigations of changes of the musculoskeletal system due to video gaming in healthy individuals. Studies with participants older than 60 years or solely psychological, social or cardiovascular outcomes were excluded. An adapted version of the Newcastle-Ottawa Scale was used for the risk of bias analysis. RESULTS: Sixteen observational studies involving a total of 62,987 participants met the inclusion criteria. A majority (11) of the studies reported statistical negative musculoskeletal changes due to video game playtime. Four studies did not report changes and one study found no effect of video game playtime on the musculoskeletal system. Out of the eleven studies, which demonstrated a negative impact of video game playtime on the musculoskeletal system, the most reported painful body parts were the neck (n = 4), shoulder (n = 4) and back (n = 3). Ten studies reported odds ratios (OR) for the dependence of the appearance of musculoskeletal disorders on video game playtime. In eight studies OR were significantly increased (1.3-5.2). CONCLUSION: Eleven out of twelve studies demonstrated a negative impact of video game playtime on the musculoskeletal system. In particular, excessive video game playtimes (> 3 h/day) seemed to be a predictor for the appearance of musculoskeletal disorders. Due to their great popularity across multiple generations, specific and tailored prevention and health promotion programs for video gamers need to be developed to counteract this important public health issue.

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