Gender and military issues : a categorized research bibliography

The purpose of this report is to give an overview of research related to gender issues in the military

Risk-taking attitudes in the Norwegian population: Implications for the recruitment to the Armed Forces

The presence of risks is a crucial and unavoidable feature of many military contexts and should be recognized by the military in recruitment and skill acquisition. Moreover, the military system is part of the society at large and thus influenced by the general values and norms that exists. This is particularly the case in Norway, one of the few countries left with compulsory military service and the only NATO country with female conscription. The article examines risk-taking attitudes in eight dimensions (ethical, existential, financial, intellectual, performance-related, physical, political, and social) in a representative sample (n=1,000) of the Norwegian population. While significant main effects were found for both gender and age, no differences were revealed among the youngest women and men (age 15-24). The results are discussed in relation to potential implications for recruitment into the Armed Forces.Risk-taking attitudes in the Norwegian population: Implications for the recruitment to the Armed ForcespublishedVersio

Risk-Taking and Sensation Seeking in Military Contexts: A Literature Review

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Risk-taking attitudes and behaviors in the Norwegian population: the influence of personality and background factors

The article presents the results of an investigation where the main purpose was to see how willingness to take risks is distributed in the general adult population relative to socio-demographic background and personality. A representative sample (n = 1000) of the population 15 years and older was interviewed about socio-demographic background, personality type (Big Five, EPQ, Sensation Seeking) and willingness to take risks. We used a new scale containing eight dimensions, covering social, intellectual, achievement, political, economic, physical, ethical and existential types of risk. The results showed that people in general were risk averse in relation to physical, ethical, economic and existential risks but had a balanced bell-shaped distribution of scores on the other risk dimensions. There was a moderate to low positive correlation between all eight risk-taking dimensions except achievement risk versus ethical risk. Males were more willing to take risks than females on six of eight dimensions. Younger were more willing than older to take risks on all eight risk dimensions. Higher educational level influenced risk-taking positively in more than half of the dimensions, not only one’s own educational level but also father’s and even more mother’s educational level. There was a positive correlation with household income on three dimensions. All sensation seeking subscales and total sensation seeking correlated positively with all risk-taking dimensions. There were positive correlations with most risk-taking scales on EPQ’s Extraversion and Psychoticism and Big Five’s Extraversion, Stableness and Openness. Agreeableness and Conscientiousness had negative correlation with several risk-taking dimensions. A logistic regression model, identifying the 25 percent highest scorers on total risk-taking, found that being male and scoring high on sensation seeking were the most important predictors. Furthermore, high scores on the Big Five sub-scales Extraversion and Openness, as well as the Eysenck EPQ sub-scales Extraversion and Psychoticism predicted high willingness to take risks.publishedVersio

Seasonality in pain, sleep and mental distress in patients with chronic musculoskeletal pain at latitude 69° N

This is an Accepted Manuscript of an article published by Taylor & Francis in Chronobiology International on 28 May 2020, available online: https://doi.org/10.1080/07420528.2020.1764011.Seasonality is evident in several aspects of human health and behavior, whereas seasonality in chronic pain is less well studied. We examined seasonal variation in pain severity and pain dissemination, as well as in pain-associated conditions, such as sleep impairment, sleep timing, mental distress, fatigue and physical activity. We also examined if any of these associated conditions moderated the seasonality in pain. This prospective study was conducted in the subarctic municipality of Tromsø, Norway (69º North), on a sample of patients with chronic musculoskeletal pain (N = 56). Data were collected with self-report questionnaires and objective actigraphy measures (7 days) twice: winter and summer. Mixed linear regression models were fitted. A modest seasonality effect was observed in pain severity (highest in summer), but not in pain dissemination. Seasonality with increased physical activity and delayed sleep timing in the summer was also present. The remaining pain-associated self-report or objective measures indicated no seasonality. The season–pain association was not significantly moderated by any of the pain-associated conditions. Previous studies on healthy individuals residing in polar areas have suggested an opposite seasonal effect with delay of the sleep–wake rhythm in winter. Our results based on a clinical sample thus represent a novel finding that needs to be examined further with regard to seasonal circadian entrainment and alignment in pain populations. These results may have clinical value for the treatment of patients with musculoskeletal pain as seasonality may require seasonal adjustments of pain treatment strategies

Sleep Characteristics in Adults With and Without Chronic Musculoskeletal Pain. The Role of Mental Distress and Pain Catastrophizing

Objectives: Sleep disturbance is associated with persistence and exacerbation of chronic pain. As this relationship seems to be bidirectional, factors underpinning sleep disturbance may prove important in multimodal rehabilitation approaches. The aim of this cross-sectional study was to examine the impact of psychological symptoms on subjective and objective sleep measures in patients with chronic musculoskeletal pain (CMP), as compared with pain-free controls. Materials and Methods: Sleep was assessed by self-report questionnaires, actigraphy, and polysomnography recordings in 56 patients (75.0% female; Mage=41.7 y, SD=10.8 y) with CMP and compared with 53 matched pain-free controls (71.7% female; Mage=41.8 y, SD=10.7). Mental distress (Hopkins Symptoms Checklist [HSCL]) and Pain Catastrophizing Scale (PCS) were tested as predictors of objective and subjective sleep measures in multiple regression models, and their indirect effects were tested in bootstrapped mediation models. Results: The sleep data revealed substantially more subjective sleep disturbance (Hedge g: 1.32 to 1.47, P<0.001), moderately worse sleep efficiency in the actigraphy measures (Hedges g: 0.5 to 0.6, P<0.01), and less polysomnography measured slow wave sleep (Hedges g: 0.43, P<0.05) in patients, as compared with controls. HSCL was strongly associated with the self-reported measures Insomnia Severity Index (ISI) and Pittsburgh Sleep Quality Index (PSQI). HSCL also partially explained the association between pain and sleep, but HSCL was not associated with any of the objective sleep measures. More pain catastrophizing was related to less slow wave sleep. Discussion: The differences in subjective and objective sleep measures indicate that they probe different aspects of sleep functioning in patients with musculoskeletal pain, and their combined application may be valuable in clinical practice. Self-reported sleep disturbance seems to overlap with affective dimensions reflected by the HSCL questionnaire

The impact of extended electrodiagnostic studies in Ulnar Neuropathy at the elbow

Background: This study aimed to explore the value of extended motor nerve conduction studies in patients with ulnar nerve entrapment at the elbow (UNE) in order to find the most sensitive and least time-consuming method. We wanted to evaluate the utility of examining both the sensory branch from the fifth finger and the dorsal branch of the ulnar nerve. Further we intended to study the clinical symptoms and findings, and a possible correlation between the neurophysiological findings and pain. Methods: The study was prospective, and 127 UNE patients who were selected consecutively from the list of patients, had a clinical and electrodiagnostic examination. Data from the most symptomatic arm were analysed and compared to the department's reference limits. Student's t - test, chi-square tests and multiple regression models were used. Two-side p-values < 0.05 were considered as significant. Results: Ulnar paresthesias (96%) were more common than pain (60%). Reduced ulnar sensitivity (86%) and muscle strength (48%) were the most common clinical findings. Adding a third stimulation site in the elbow mid-sulcus for motor conduction velocity (MCV) to abductor digiti minimi (ADM) increased the electrodiagnostic sensitivity from 80% to 96%. Additional recording of ulnar MCV to the first dorsal interosseus muscle (FDI) increased the sensitivity from 96% to 98%. The ulnar fifth finger and dorsal branch sensory studies were abnormal in 39% and 30% of patients, respectively. Abnormal electromyography in FDI was found in 49% of the patients. Patients with and without pain had generally similar conduction velocity parameter means. Conclusion: We recommend three stimulation sites at the elbow for MCV to ADM. Recording from FDI is not routinely indicated. Sensory studies and electromyography do not contribute much to the sensitivity of the electrodiagnostic evaluation, but they are useful to document axonal degeneration. Most conduction parameters are unrelated to the presence of pain

Fluctuations of sensorimotor processing in migraine: A controlled longitudinal study of beta event related desynchronization

Background: The migraine brain seems to undergo cyclic fluctuations of sensory processing. For instance, during the preictal phase, migraineurs experience symptoms and signs of altered pain perception as well as other well-known premonitory CNS-symptoms. In the present study we measured EEG-activation to non-painful motor and sensorimotor tasks in the different phases of the migraine cycle by longitudinal measurements of beta event related desynchronization (beta-ERD). Methods: We recorded electroencephalography (EEG) of 41 migraine patients and 31 healthy controls. Each subject underwent three EEG recordings on three different days with classification of each EEG recording according to the actual migraine phase. During each recording, subjects performed one motor and one sensorimotor task with the flexion-extension movement of the right wrist. Results: Migraine patients had significantly increased beta-ERD and higher baseline beta power at the contralateral C3 electrode overlying the primary sensorimotor cortex in the preictal phase compared to the interictal phase. We found no significant differences in beta-ERD or baseline beta power between interictal migraineurs and controls. Conclusion: Increased preictal baseline beta activity may reflect a decrease in pre-activation in the sensorimotor cortex. Altered pre-activation may lead to changes in thresholds for inhibitory responses and increased beta-ERD response, possibly reflecting a generally increased preictal cortical responsivity in migraine. Cyclic fluctuations in the activity of second- and third-order afferent somatosensory neurons, and their associated cortical and/or thalamic interneurons, may accordingly also be a central part of the migraine pathophysiology.publishedVersio

Effects of insufficient sleep on sensorimotor processing in migraine. A randomised, blinded crossover study of event related beta oscillations

Background Migraine has a largely unexplained connection with sleep and is possibly related to a dysfunction of thalamocortical systems and cortical inhibition. In this study we investigate the effect of insufficient sleep on cortical sensorimotor processing in migraine. Methods We recorded electroencephalography during a sensorimotor task from 46 interictal migraineurs and 28 controls after two nights of eight-hour habitual sleep and after two nights of four-hour restricted sleep. We compared changes in beta oscillations of the sensorimotor cortex after the two sleep conditions between migraineurs, controls and subgroups differentiating migraine subjects usually having attacks starting during sleep and not during sleep. We included preictal and postictal recordings in a secondary analysis of temporal changes in relation to attacks. Results Interictally, we discovered lower beta synchronisation after sleep restriction in sleep related migraine compared to non-sleep related migraine (p=0.006) and controls (p=0.01). No differences were seen between controls and the total migraine group in the interictal phase. After migraine attacks, we observed lower beta synchronisation (p<0.001) and higher beta desynchronisation (p=0.002) after sleep restriction closer to the end of the attack compared to later after the attack. Conclusion The subgroup with sleep related migraine had lower sensorimotor beta synchronisation after sleep restriction, possibly related to dysfunctional GABAergic inhibitory systems. Sufficient sleep during or immediately after migraine attacks may be of importance for maintaining normal cortical excitability.publishedVersio