Background: Clinical tests for detecting central and peripheral shoulder fatigue are limited. The discrimination of these two types of fatigue is necessary to better adapt recovery intervention. The Kinematic Theory of Rapid Human Movements describes the neuromotor impulse response using lognormal functions and has many applications in pathology detection. The ideal motor control is modeled and a change in the neuromuscular system is reflected in parameters extracted according to this theory. Objective: The objective of this study was (...) to assess whether a shoulder neuromuscular fatigue could be detected through parameters describing the theory, if there is the possibility to discriminate central from peripheral fatigue, and which handwriting test gives the most relevant information on fatigue. Methods: Twenty healthy participants performed two sessions of fast stroke handwriting on a tablet, before and after a shoulder fatigue. The fatigue was in internal rotation for one session and in external rotation during the other session. The drawings consisted of simple strokes, triangles, horizontal and vertical oscillations. Parameters of these strokes were extracted according to the Sigma-Lognormal model of the Kinematic Theory. The evolution of each participant was analyzed through a U-Mann-Whitney test for individual comparisons. A Hotelling’s T² test and a U-Mann-Whitney test were also performed on all participants to assess the group evolution after fatigue. Moreover, a correlation among parameters was calculated through Spearman coefficients to assess intrinsic parameters properties of each handwriting test. Results: Central and peripheral parameters were statistically different before and after fatigue with a possibility to discriminate them. Participants had various responses to fatigue. However, when considering the group, parameters related to the motor program execution showed significant increase in the handwriting tests after shoulder fatigue. The test of simple strokes permits to know more specifically where the fatigue comes from, whereas the oscillations tests were the most sensitive to fatigue. Conclusion: The results of this study suggest that the Sigma-Lognormal model of the Kinematic Theory is an innovative approach for fatigue detection with discrimination between the central and peripheral systems. Overall, there is a possibility to implement the setting for clinics and sports personalized follow-up. (shrink)

BackgroundThere are limited sensitive evaluation methods to distinguish people’s symptoms of peripheral fatigue and central fatigue simultaneously. The purpose of this study is to identify and evaluate them after acute exercise with a simple and practical scale.MethodsThe initial scale was built through a literature review, experts and athlete population survey, and a small sample pre-survey. Randomly selected 1,506 students were evaluated with the initial scale after exercise. Subjective fatigue self-assessments were completed at the same time.ResultsThe Acute (...) Exercise-Induced Fatigue Scale was determined after performing a factor analysis. In the exploratory factor analysis, the cumulative variance contribution rate was 65.464%. The factor loadings of the total 8 questions were 0.661–0.816. In the confirmatory factor analysis, χ2/df = 2.529, GFI = 0.985, AGFI = 0.967, NFI = 0.982, IFI = 0.989, CFI = 0.989, and RMSEA = 0.048. The Cronbach’s alpha coefficient for the scale was 0.872, and it was 0.833 for peripheral fatigue and 0.818 for central fatigue. The intra-class correlation coefficient for the scale was 0.536, and the intra-class correlation coefficients for peripheral fatigue and central fatigue were 0.421 and 0.548, respectively. The correlation coefficient between the total score of the AEIFS and the SFSA score was 0.592.ConclusionOur results demonstrate that the AEIFS can distinguish peripheral fatigue and central fatigue and can also reflect their correlation. This scale can be a useful evaluation tool not only for measuring fatigue after acute exercise but also for guiding reasonable exercise, choosing objective testing indicators, and preventing sports injuries resulting from acute exercise-induced fatigue. (shrink)

Addressing fatigue is useful in a variety of scenarios and activities. Fatigue has recently been studied from a psychophysiological standpoint. As a result, the expression and impact of peripheral and central fatigue has been evaluated. Driving is one occupation where tiredness has disastrous consequences. BAlert is a smartphone app that approaches exhaustion with psychophysiological measures. More specifically, it evaluates the level of fatigue via heart rate variability data and the cognitive compromise via Stroop effect. The (...) goal of this study is to determine if there are gender differences in fatigue levels among professional drivers using the BAlert app. Statistically significant differences were found in the number of hours awake, in different parameters of HRV, in the level of stress, as well as in the cognitive response evaluated through the app. The results are discussed and their implications for the management of work fatigue are presented. (shrink)

Repeatedly performing a submaximal motor task for a prolonged period of time leads to muscle fatigue comprising a central and peripheral component, which demands a gradually increasing effort. However, the brain contribution to the enhancement of effort to cope with progressing fatigue lacks a complete understanding. The intermittent motor tasks closely resemble many activities of daily living, thus remaining physiologically relevant to study fatigue. The scope of this study is therefore to investigate the EEG-based brain activation (...) patterns in healthy subjects performing IMT until self-perceived exhaustion. Fourteen participants repeated elbow flexion contractions at 40% maximum voluntary contraction by following visual cues displayed on an oscilloscope screen until subjective exhaustion. Each contraction lasted ≈5 s with a 2-s rest between trials. The force, EEG, and surface EMG data were simultaneously collected. After preprocessing, we selected a subset of trials at the beginning, middle, and end of the study session representing brain activities germane to mild, moderate, and severe fatigue conditions, respectively, to compare and contrast the changes in the EEG time-frequency characteristics across the conditions. The outcome of channel- and source-level TF analyses reveals that the theta, alpha, and beta power spectral densities vary in proportion to fatigue levels in cortical motor areas. We observed a statistically significant change in the band-specific spectral power in relation to the graded fatigue from both the steady- and post-contraction EEG data. The findings would enhance our understanding on the etiology and physiology of voluntary motor-action-related fatigue and provide pointers to counteract the perception of muscle weakness and lack of motor endurance associated with ADL. The study outcome would help rationalize why certain patients experience exacerbated fatigue while carrying out mundane tasks, evaluate how clinical conditions such as neurological disorders and cancer treatment alter neural mechanisms underlying fatigue in future studies, and develop therapeutic strategies for restoring the patients' ability to participate in ADL by mitigating the central and muscle fatigue. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Family, Friends, and Cancer:The Overwhelming Effects of Brain Cancer on a Child’s LifeLynne ScheumannOur son was diagnosed with a medulloblastoma at the old age of 13. The “lucky” part for him was his brain was almost fully developed at this age as opposed to most “medullo” patients. While this was a benefit to him it was also one of the hardest things for him.He went into surgery a highly (...) intelligent, active, and left handed boy and came out unable to move his left side, could barely speak, and very much aware of what he just lost. We, as a family, were totally unprepared for how globally this would [End Page 23] affect the rest of his life. As we spent time in the hospital I would look at the children with other types of cancer and see them walking and talking and doing their schoolwork and God forgive me I would be jealous. The fact that the cancer was in his brain, the part of his body that makes him who he is changed everything forever.He lost all of his friends because 13–year–old boys communicate best through physical activity and that was not an option for him. He still has the same personality and sense of humor, but he will not be the architect or engineer he once dreamed of being. Math, that was once so easy for him was now like a foreign language, never to be mastered again. He was able to graduate from High School and takes classes at our local Junior College in Computer Assisted Drafting, but he can only manage one or two classes a semester due to the fatigue he still suffers from.What I most worry about and wish I had been forewarned about is his long–term quality of life. Physically he has come such a long way from how he was after the resection. It was a very slow process in which the first year of rehab was slowed by the fact that one of the chemo agents causes peripheral neuropathy. He developed contractures in his ankles and needed serial casting and ankle–foot orthotics (AFO) not just on the left leg, but now the right. He was able to switch his handedness fairly easily and his left hand will always be of limited usefulness because of ataxia. I would get angry at him that he gave up on his left side so quickly until it was finally explained to me years later that the ataxia would never get better.As far as his walking ability goes he has come a long way. At first he was unable to walk and once he started rehab he went back to learning to crawl and progressed to a walker. The first time I saw him walk with the walker brought tears to my eyes. It was so much more of an event for me than when he took his first steps as a toddler. This was so much more hard fought. He never complained, just always did what was asked of him. It had to have been such hard work and also somewhat embarrassing, as he needed help to literally do everything for months. He progressed to a cane and about two years ago decided not to use that or his AFO’s. He now wears high top boots that substitute for the AFO’s but don’t make him appear disabled. Recently he decided there are times when he would be safer if he had his cane and purchased one that looks more like a hiking stick than a cane. I think he has come to terms with the fact that physically he is as good as he is going to get and works hard to maintain what he did regain. He has a trainer and goes to the gym on a regular basis with no prompting from us. I do not know if he realizes that as he ages things will be harder for him than the average person. I think in some way he is aware of that because he did decided to use the cane if safety is an issue.His... (shrink)

Pulmonary rehabilitation has demonstrated patients’ physiological and psychosocial improvements, symptoms reduction and health-economic benefits whilst enhances the ability of the whole family to adjust to illness. However, PR remains highly inaccessible due to lack of awareness of its benefits, poor referral and availability mostly in hospitals. Novel models of PR delivery are needed to enhance its implementation while maintaining cost-efficiency. We aim to implement an innovative community-based PR programme and assess its cost-benefit. A 12-week community-based PR will be implemented in (...) primary healthcare centres where programmes are not available. Healthcare professionals will be trained. 73 patients with CRD and their caregivers will compose the experimental group. The control group will include dyads age- and disease-matched willing to collaborate in data collection but not in PR. Patients/family-centred outcomes will be dyspnoea, fatigue, cough and sputum, impact of the disease, emotional state, number of exacerbations, healthcare utilisation, health-related quality of life and family adaptability/cohesion. Other clinical outcomes will be peripheral and respiratory muscle strength, muscle thickness and cross sectional area, exercise capacity, balance and physical activity. Data will be collected at baseline, at 12 weeks, at 3- and 6-months post-PR. Changes in the outcome measures will be compared between groups, after multivariate adjustment for possible confounders, and effect sizes will be calculated. A cost-benefit analysis will be conducted. This study will enhance patients access to PR, by training healthcare professionals in the local primary healthcare centres to conduct such programmes and actively involving caregivers. The cost-benefit analysis of this intervention will provide an evidence-based insight into the economic benefit of community-based PR in chronic respiratory diseases. The trial was registered in the ClinicalTrials. gov U.S. National Library of Medicine, on 10th January, 2019. (shrink)

Microsaccades, small saccadic eye movements occurring during fixation, have been suggested to be modulated by various sensory, cognitive, and affective processes relating to arousal. Although the modulation of fatigue-related arousal on microsaccade behavior has previously been characterized, the influence of other aspects of arousal, such as emotional arousal, is less understood. Moreover, microsaccades are modulated by cognitive processes that could also be linked to arousal. To investigate the influence of emotional arousal, saccade preparation, and global luminance levels on microsaccade (...) behavior, emotional auditory stimuli were presented prior to the onset of a fixation cue whose color indicated to look either at the peripheral stimulus or in the opposite direction of the stimulus. Microsaccade behavior was found to be significantly modulated by saccade preparation and global luminance level, but not emotional arousal. In the pro- and anti-saccade task, microsaccade rate was lower during anti-saccade preparation as compared to pro-saccade preparation, though microsaccade dynamics were comparable during both trial types. Our results reveal a differential role of arousal linked to emotion, fatigue, saccade preparation, and global luminance level on microsaccade behavior. (shrink)

Background: Compassion fatigue is recognized as impacting the health and effectiveness of healthcare providers, and consequently, patient care. Compassion fatigue is distinct from “burnout.” Reliable measurement tools, such as the Professional Quality of Life scale, have been developed to measure the prevalence, and predict risk of compassion fatigue. This study reviews the prevalence of compassion fatigue among healthcare practitioners, and relationships to demographic variables. Methods: A systematic review was conducted using key words in MEDLINE, PubMed, and (...) Ovid databases. Data were extracted from a total of 71 articles meeting inclusion criteria, from studies measuring compassion fatigue in healthcare providers using a validated instrument. Quantitative and qualitative data were extracted and compiled by three independent reviewers into an evidence table that included basic study characteristics, study strength and quality determination, measurements of compassion fatigue, and general findings. Meta-analysis, where data allowed, was stratified by Professional Quality of Life version, heterogeneity was quantified, and pooled means were reported with 95% confidence interval. A table of major study characteristics and results was created. Ethical consideration: This paper contains no primary data obtained directly from research participants. Data obtained from previously published resources have been acknowledged within references. Psychological distress, particularly compassion fatigue, can be insidious, no health profession is immune, and may significantly impact the ability to provide care. Results: A total of 71 studies were included. Compassion fatigue was reported across all practitioner groups studied. Relationships to most demographic variables such as years of experience and specialty were either not statistically significant or unclear. Variability in reporting of Professional Quality of Life results was found. Interpretation: Compassion fatigue exists across diverse practitioner groups. Prevalence is highly variable, and its relationship with demographic, personal, and/or professional variables is inconsistent. Questions are raised about how to mitigate compassion fatigue. (shrink)

Background: Nurses who are constantly being exposed to patients’ suffering can lead to compassion fatigue. There is a gap in the latest research regarding nurses’ experiences of compassion fatigue. Little is known about how compassion fatigue affects the nurse as a person, and indications of how it affects the profession are scarce. Aim: The aim of this study was to explore compassion fatigue experienced by nurses and how it affects them as persons and professionals. Research design, (...) participants, and research context: A qualitative explorative approach was used. The data consisted of texts from interviews with seven nurses in various nursing contexts. Content analysis was used. Ethical consideration: Ethical approval was sought and granted from an ethics committee at the university where the researchers were based, and written, informed consent was obtained from all the participants. Findings: Five themes were discovered: Compassion as an empathic gift and compassion fatigue as a result of compassion overload, Compassion fatigue as exhausting the nurse as a professional and private person, Compassion fatigue as a crisis with potentially valuable insights, Compassion fatigue can be handled by self-care and focus on self, and Compassion fatigue is affected by life itself and multifaceted factors. Discussion: Compassion stress and overload can lead to compassion fatigue. Compassion fatigue affects the nurse’s ability to compassion, and the caring is no longer experienced in the same way; the nurses experienced it as being deprived of the gift of compassion. Compassion fatigue implicates a crisis with potentially valuable insights. Conclusion: Compassion fatigue can be symbolized as bruises in the soul, hurtful, but with time it can fade away, although it leaves a sense of caution within the nurse, which can affect the suffering patient. (shrink)

Philosophers of mind, both in the conceptual analysis tradition and in the empirical informed school, have been implicitly neglecting the potential conceptual role of the Peripheral Nervous System (PNS) in understanding sensory and perceptual states. Instead, the philosophical as well as the neuroscientific literature has been assuming that it is the Central Nervous System (CNS) alone, and more exactly the brain, that should prima facie be taken as conceptually and empirically crucial for a philosophical analysis of such states This (...) is the first monograph that focuses on the PNS and its constitutive role in sensory states, including pain, mechanoception, proprioception, tactile perception, and so forth. -/- The author argues that the brain-centeredness of current philosophy of mind is a prejudice, and proposes a series of original ways in which classic puzzles in the philosophy of mind can be solved once the hypothesis that PNS is a constitutive element of mental states is taken seriously. The author calls this “the Peripheral Mind Hypothesis”, and employs it in a vast range of issues, such as functionalism, physicalism, mental content, embodiment, as well as some issues in neuroethics. -/- Making equal use of conceptual analysis, empirical data from neuroscience, first-person phenomenological data, and philosophical speculation, this work offers a fresh look at, and novel solutions to many philosophical problems. (shrink)

The philosophical analysis of trauma has grown over the last ten years due to our need to elucidate the lived experience endured by an increasing number of human beings undergoing forced migration, abuses, war crimes, and traumatizing situations. The irreducibility of trauma renders the task of care ethics more and more difficult. Yet, this paper argues that a phenomenological analysis of the care relation with traumatized patients can help elucidate the inter-affective dynamics at stake in such encounters. First, I will (...) analyze the phenomenon of compassion fatigue and show how it differs from “emotional contagion” and how it relates to empathy. Relying on phenomenological approaches to empathy, I will assess the kind of “affective sharing” entailed by compassion fatigue. In the second section, I will reframe this conception of empathy by uncovering the existential feeling of vulnerability and the pre-reflective bodily resonance that frames our encounter with others. In the final section, I will argue that vicarious traumatization could be overcome thanks to a “creative kind” of compassion which links the sense of self to the sense of agency, the act of caring with the quest for justice, in a constant effort to restore balance through affective sharing and mutual recognition. (shrink)

The article maintains that chronic fatigue syndrome can be properly understood only by taking an integrated perspective in which evolutionary, developmental and ecological aspects are considered. The integrative approach, supplemented by a complexity theory and psychoneuroimmunological research, is capable of explaining why there are so few structural aberrations to be found in chronic fatigue syndrome and why specific treatment is so difficult to establish. A major outcome of the investigation, that all individuals with chronic fatigue syndrome are (...) diseased in their own way, emphasises the need to study the development of personalised life histories. It also highlights an ethical dimension; personalised disease defies essentialist thinking on patient management. Another major outcome, which follows from the developmental systems perspective, is the dissolution of ontological mind-body dualism. This in turn allows for a methodological complementation of the biological and phenomenological approaches to knowledge. New research strategies that may help to resolve chronic fatigue syndrome, grounded in the revised perspective on individual development, are suggested. (shrink)

BackgroundThe Covid-19 pandemic has impacted compassion fatigue and the mental health of health care providers, particularly midwives and nurses. Although there are studies involving health workers...

It is often said that some kind of peripheral (or inattentional) conscious awareness accompanies our focal (attentional) consciousness. I agree that this is often the case, but clarity is needed on several fronts. In this paper, I lay out four distinct theses on peripheral awareness and show that three of them are true. However, I then argue that a fourth thesis, commonly associated with the so-called "self-representational approach to consciousness," is false. The claim here is that we have (...) outer focal consciousness accompanied often (or even always) by inner peripheral (self-)awareness. My criticisms stem from both methodological and phenomenological considerations. In doing so, I offer a diagnosis as to why the fourth thesis has seemed true to so many and also show how the so-called "transparency of experience," frequently invoked by representationalists, is importantly relevant to my diagnosis. Finally, I respond to several objections and to further attempts to show that thesis four is true. What emerges is that if one wishes to hold that some form of self-awareness accompanies all outer-directed conscious states, one is better off holding that such self-awareness is itself unconscious, as is held for example by standard higher-order theories of consciousness. (shrink)

Mental fatigue is a psycho-biological state that impairs sports-related performances. Recently, it has been proved that MF can affect basketball performance. However, a systematic overview detailing the influences of MF on basketball performance is still lacking. This study aims to investigate the effects of MF on the physical, technical, tactical, and cognitive performance of basketball. We used the databases of PubMed, Web of Science, SPORTDiscus, Scopes, and CKNI for articles published up to 31 May 2021. The articles included in (...) this study were projected to test whether MF influences basketball athlete performance. Only experimental design studies were selected, and the control condition was without MF. Finally, seven articles fit the inclusion criteria. The results imply that MF impairs the technical aspects of basketball and the players' cognitive [take-the-first heuristics and decision-making] performance, which results in athletes not using their techniques skillfully and being unable to make practical decisions during critical points in the game. In addition to that, the influences of MF on physical and tactical performance have not been studied. Further studies should look into comprehensive research on the influences of MF on basketball performance, especially on a player's physical and tactical performance.Systematic Review Registration: [https://inplasy.com/] [INPLASY2021100017]. (shrink)

The term compassion fatigue has come to be applied to a disengagement or lack of empathy on the part of care-giving professionals. Empathy and emotional investment have been seen as potentially costing the caregiver and putting them at risk. Compassion fatigue has been equated with burnout, secondary traumatic stress disorder, vicarious traumatization, secondary victimization or co-victimization, compassion stress, emotional contagion, and counter-transference. The results of a Canadian qualitative research project on nurses? experience of compassion fatigue are presented. (...) Nurses, self-identified as having compassion fatigue, described a change in their practice by which they began to shield and distance themselves from the suffering of patients and families. Time to help patients and families cope with suffering seemed unavailable, and many felt they were running on empty and, ultimately, impotent as nurses. Feelings of irritability, anger, and negativity arose, though participants described denying or ignoring these emotions as a way to try to survive their work day. Difficulties with work carried over into the nurses? personal lives, affecting their relationships with family and friends. Such experiences invariably called into question the participants? identity, causing them to reflect on the kind of nurse they were. The participants? compassion fatigue created a sense of hopelessness regarding positive change, although some nurses described strategies that seemed to help alleviate their compassion fatigue. (shrink)

I argue that Husserl’s account of passive synthesis can be developed into a phenomenology of peripheral experience. Peripheral experiences are not defined by their location in visual space but by their phenomenal and intentional character, by what these experiences are like and how they present things in the world. Further, I argue that peripheral experience is of a piece with our most basic background convictions about the world. As such, the periphery is epistemically neutral, but not therefore (...) empty of meaning. It is meaningful as holding open the possibility of further activity, both practical and intellectual. I explore these ideas by focusing on peripheral color experience. Husserl’s discussions of associative synthesis, affection, and doxic and nondoxic forms of attention prove key to detailing peripheral color experience. I end by arguing that at the periphery, intentional content and phenomenal content come apart. (shrink)

Mental fatigue (MF) jeopardizes performance and safety through a variety of cognitive impairments and according to the complexity loss theory, should represent “complexity loss” in electroencephalogram (EEG). However, the studies are few and inconsistent concerning the relationship between MF and loss of complexity, probably because of the susceptibility of brain waves to noise. In this study, MF was induced in thirteen male college students by a simulated flight task. Before and at the end of the task, spontaneous EEG and (...) auditory steady-state response (ASSR) were recorded and instantaneous frequency variation (IFV) in alpha rhythm was extracted and analyzed by multiscale entropy (MSE) analysis. The results show that there were significant differences in IFV in alpha rhythm either from spontaneous EEG or from ASSR for all subjects. Therefore, the proposed method can be effective in revealing the complexity loss caused by MF in spontaneous EEG and ASSR, which may serve as a promising analyzing method to mark mild mental impairments. (shrink)

The scientific and practical fields—especially high-performance sports—increasingly request a stronger focus be placed on individual athletes in human movement science research. Machine learning methods have shown efficacy in this context by identifying the unique movement patterns of individuals and distinguishing their intra-individual changes over time. The objective of this investigation is to analyze biomechanically described movement patterns during the fatigue-related accumulation process within a single training session of a high number of repeated executions of a ballistic sports movement—specifically, the (...) frontal foot kick (mae-geri) in karate—in expert athletes. The two leading research questions presented for consideration are (1) Can characteristics of individual movement patterns be observed throughout the entire training session despite continuous changes, i.e., even as fatigue-related processes increase? and (2) How do intra-individual movement patterns change as fatigue-related processes increase throughout a training session? Sixteen expert karatekas performed 606 frontal foot kicks directed toward an imaginary target. The kicks were performed in nine sets at 80% (K-80) of the self-experienced maximal intensity. In addition, six kicks at maximal intensity (K-100) were performed after each of the nine sets. Between the sets, the participants took a 90-s break. Three-dimensional full-body kinematic data of all kicks were recorded with 10 infrared cameras. The normalized waveforms of nine upper- and lower-body joint angles were classified using a supervised machine learning method (support vector machine). The results of the classification revealed a disjunct distinction between the kinematic movement patterns of individual athletes. The identification of unique movement patterns of individual athletes was independent of the intensity and the degree of fatigue-related processes. In other words, even with the accumulation of fatigue-related processes, the unique movement patterns of an individual athlete can be clearly identified. During the training session, changes in intra-individual movement patterns could also be detected, indicating the occurrence of adaptations in individual movement patterns throughout the fatigue-related accumulation process. The results suggest that these adaptations can be modeled in terms of changes in patterns rather than increasing variance. Practical consequences are critically discussed. (shrink)

Recent evidence indicates that inhibition of protein translation may be a common pathogenic mechanism for peripheral neuropathy associated with mutant tRNA synthetases (aaRSs). aaRSs are enzymes that ligate amino acids to their cognate tRNA, thus catalyzing the first step of translation. Dominant mutations in five distinct aaRSs cause Charcot‐Marie‐Tooth (CMT) peripheral neuropathy, characterized by length‐dependent degeneration of peripheral motor and sensory axons. Surprisingly, loss of aminoacylation activity is not required for mutant aaRSs to cause CMT. Rather, at (...) least for some mutations, a toxic‐gain‐of‐function mechanism underlies CMT‐aaRS. Interestingly, several mutations in two distinct aaRSs were recently shown to inhibit global protein translation in Drosophila models of CMT‐aaRS, by a mechanism independent of aminoacylation, suggesting inhibition of translation as a common pathogenic mechanism. Future research aimed at elucidating the molecular mechanisms underlying the translation defect induced by CMT‐mutant aaRSs should provide novel insight into the molecular pathogenesis of these incurable diseases. (shrink)

Simultaneous bimanual movements are not merely the sum of two unimanual movements. Here, we considered the unimanual/bimanual motor system as comprising three components: unimanual-specific, bimanual-specific, and overlapping. If the force-generating system controlling the same limb differs between unimanual and bimanual movements, unimanual exercise would be expected to fatigue the unimanual-specific and overlapping parts in the force-generating system but not the bimanual-specific part. Therefore, we predicted that the decrease in bimanual force generation induced by unimanual neuromuscular fatigue would be (...) smaller than the decrease in unimanual force generation. Sixteen healthy right-handed adults performed unimanual and bimanual maximal handgrip measurements before and after a submaximal fatiguing handgrip task. In the fatigue task, participants were instructed to maintain unimanual handgrip force at 50% of their maximal handgrip force until the time to task failure. Each participant performed this task in a left-hand fatigue condition and a right-hand fatigue condition, in a random order. Although the degree of neuromuscular fatigue was comparable in both conditions, as expected, the decrease in bimanual right handgrip force was significantly smaller than those during unimanual right performance in the RF condition, but not in the LF condition. These results indicate that for the right-hand, neuromuscular fatigue in unimanual handgrip does not completely affect simultaneous bimanual handgrip. Regarding the underlying mechanisms, we propose that although neuromuscular fatigue caused by unimanual handgrip reduces the motor output of unimanual-specific and overlapping parts in the force-generating system, when simultaneous bimanual handgrip is performed, the overlapping part and the bimanual-specific part generate motor output, thus decreasing the force reduction. (shrink)

I have not attempted to provide here an analysis of the methodology of molecular biology or molecular genetics which would demonstrate at what specific points a more reductionist aim would make sense as a research strategy. This, I believe, would require a much deeper analysis of scientific growth than philosophy of science has been able to provide thus far. What I have tried to show is that a straightforward reductionist strategy cannot be said to be follwed in important cases of (...) theory development in molecular biology, and that in at least one important case, the Jacob-Monod operon theory, the methodology followed was more biological than chemical. It should be noted in closing, however, that since biological systems are thought by molecular biologists to be nothing but chemical systems, in the long run detailed investigations of such systems will be in full accord with the dictates suggested by the general reduction model. (shrink)

Fatigue and increased fatigability occur as symptoms in almost every medical and psychiatric condition, as well as being common reactions to non pathological physical and psychological strain and stress. We will attempt to clarify the semantics of the terms "fatigue" and "fatigability", and we will put forward the hypothesis that the special kind of mental fatigability which characterises many cases of mild to moderate dysfunction of the brain is functional in a sense that it represents an overload of (...) pathological information (from the injured area) to higher cognitive mechanisms which may themselves be anatomically and physiologically intact. (shrink)

IntroductionThe COVID-19 pandemic was soon declared a global health threat and had significant economic and health implications. Unprecedented government measures brought massive shifts in teaching-learning pedagogy in nursing to curb the infection. The study was conducted to explore the predictors of pandemic fatigue among nursing undergraduates and mediating role of individual resilience and coping styles during the third wave in India.MethodsThis online survey included 256 undergraduate nursing students studying at Tertiary Care Teaching Hospital in North India. Lockdown/Pandemic Fatigue (...) Questionnaire, Brief Resilience Scale, and Coping Behavior Questionnaire were used to collect the information. Appropriate descriptive and inferential statistics were applied to compute the results.ResultsNursing undergraduates reported a moderate level of fatigue during the restrictions imposed at the time of the third wave. Students’ year of study, tested positive during pandemic, and post-COVID-19 hospitalization were found associated with higher fatigue status. Advanced age and higher personal resilience status were associated with lower fatigue levels. Resilience status and second year of study were reported as independent predictors of pandemic fatigue in students.ConclusionFindings suggest that lockdown-related fatigue was common in nursing undergraduates. Considering negative consequences on mental health, routine psychosocial screening of the nursing students should be conducted. Recommending stress-relieving measures should be enforced to help nursing undergraduates to combat lockdown-induced exhaustion. (shrink)

The pastoral ministry of caregiving inevitably implies a cost. The spiritual ethos in the Christian ministry implies a huge sacrifice. Dietrich Bonhoeffer described this ethos as ‘the cost of discipleship’. Very specifically in the case of unexpected and the so-called ‘undeserved modes of suffering’, the meaning framework of the caregiver is being interpenetrated, causing a kind of ‘depleted sense of being’. It is argued here that an appropriate diagnosis, and a description of the phenomenon of compassion fatigue, can help (...) caregivers to better understand their sense of being depleted. Instead of leaving the pastoral ministry, this can help them to attend anew to their spiritual capacity. In this regard, a theology of compassion, framed by theopaschitic theology, can help pastors to become ‘healed’ in order to re-enter the pastoral ministry and regain a sense of parrhēsia. (shrink)

Fantasies have the power in the very midst of political communities, consciously and unconsciously alike, to suppress internal antagonisms in times of crises. More specifically, they help to blur aporias of a community’s ideological structures by invoking a common sense that reconstitutes the community, similar to an act of religious conversion. Their impact on the “space of reasons” is analyzed in this article because fantasies, and specifically excessive and radical fantasies, suspend the game of giving and asking for reasons. They (...) do so in order to ground premises of contestation in the background of communal reason via an emotional and secret “code” of what it means to be a “we.” Totalitarian, monarchical, and democratic societies need this “code” to purge society of the pure formalities of political reason, or, in other words: to get rid of fantasy fatigue. (shrink)

오늘날 현대인은 만성 피로로 지쳐 있다. 한병철은 이러한 현대사회의 모습을 피로사회로 규정하고, 그 원인이 과도한 자기 긍정의 성과 주체에서 비롯된다고 진단한다. 과도한 피로로 인한 소진증후군과 같은 정신적 질병은 일 중독의 도핑 사회에서 성과 주체가 보여주는 필연적 현상이다. 그러나 현대사회에서 피로의 탓을 오로지 성과 주체의 내적 원인으로만 돌리는 것은 정당하지 않다. 왜냐하면, 성과 주체 자체가 이미 자기 성취와 자기 발견과 전혀 무관한 노동만을 암암리에 강요하는 사회의 외적 지배구조 아래 놓여 있기 때문이다. 이 글은 오늘날 질병으로서 인식되는 현대인의 만성적 피로가 근본적으로 어디에 (...) 기인하고 있는지를 특히 노동(일)과 관련하여 다시 검토하고, 철학상담의 치유의 관점에서 피로사회를 극복하는 대안으로서 삶의 태도와 방식의 변화인 ‘성과 주체’의 삶에서 ‘열매 주체’의 삶으로의 변화를 제안한다. 이때 생존과 가치 실현의 목적 외에 우리가 가진 노동에 대한 잘못된 관념과 개념을 교정하고, 노동의 세계관에 대한 새로운 해석을 통해서 자기변형을 꾀하는 것이 무엇보다도 중요하다. 오늘날 현대인은 바쁜 일상 안에서 온전히 자기 존재로서 주체적 삶을 살지 못한다. 성과를 부추기는 사회에 매몰된 채 병적인 과잉 긍정의 모습을 보이는 성과 주체의 삶이 결코 주체성 있는 삶이라 할 수는 없다. 현대인의 삶에서 주체성 있는 삶은 가능한 한 성과를 내는 데 있지 않고 오히려 자기를 돌아보고 자기를 해방하는 ‘여유’에 있다. 이런 여유로움 속에서 우리는 비로소 진정한 자기를 발견할 수 있기 때문이다. 결코 충족될 수 없는 성과 욕망에 무방비적으로 노출된 사회에서 성과 주체가 자기 착취의 가학적 모습을 띤다면, 열매 주체는 성과에 집착하지 않는 여유로움을 통해서 해방과 자유를 얻는다. (shrink)

The event of the pandemic that started in 2020 fed an affective phenomenon known as pandemic fatigue, medically near to “chronic fatigue syndrome”. Psychologi- cal explanation of the phenomenon provides a first approach that is enriched with phenomenological description and analysis of it as existential feeling in the present. This term stresses the bodily reference of the kind of existential moods displayed by Heidegger and contributes to a better description of the fatigue phenomenon relying on Levinas’ study. (...) Present and profound fatigue is therefore shown as a feeling of tiredness that ties existence to a no-being-possible or no-being-able for oneself to do what it was possible before, i.e. in the pre-pandemic past. Besides the description, phenomenological analysis of the bond between profound boredom —as studied by Heidegger— and pandemic existential fatigue stresses different levels in the ontological understanding of this last one and its harmful feature. (shrink)

The present study examined the distinct configurations, or profiles, taken by work fatigue dimensions among samples of military and civilian employees. We also tested profile similarity across these two samples of employees. In addition, this research documented the relations between the identified work fatigue profiles, one predictor variable, and a series of attitudinal outcomes among military employees. Six profiles of employees characterized by different levels of global and specific work fatigue were identified using latent profile analyses: Low (...) Fatigue, Physically and Emotionally Depleted, Emotionally Depleted, Globally and Mentally Depleted, Globally and Emotionally Depleted, and Balanced. In both samples, employees corresponding to the Balanced profile displayed average levels of global and specific work fatigue. However, this profile slightly differed across sample, as indicated by the observation of work fatigue levels that were slightly higher among the military than among civilians. Militaries’ perceptions of psychological empowerment were significantly related to their likelihood of belonging to all profiles. In turn, militaries’ career satisfaction, job satisfaction, and turnover intentions were also found to differ as a function of profile membership. (shrink)

Oersted has been a puzzle for historians of science. Unflatteringly regarded by contemporaries in Britain and France as a metaphysician, he astonished and galvanised the learned world in 1820 with his discovery of electromagnetism. Suddenly famous, he was belatedly honoured; but, like Röntgen with X-rays, did no more serious work on the discovery that brought him renown, leaving that to Ampère and Faraday while he concentrated on an aesthetics that would bridge arts and sciences, and on building up scientific institutions (...) at home in Denmark in the wake of the Napoleonic wars and the British bombardment of Copenhagen. He lived in exciting times under the last absolutist monarchy in western Europe; and as he lay dying, his country was lapsing into civil war over the Schleswig–Holstein question, following the 1848 revolutions all over Europe. Although not geographically remote, Denmark was peripheral as far as science was concerned and was a very small country in which the int .. (shrink)

Science once had an unshakable faith in its ability to bring the forces of nature—even human nature—under control. In this wide-ranging book Anson Rabinbach examines how developments in physics, biology, medicine, psychology, politics, and art employed the metaphor of the working body as a human motor. From nineteenth-century theories of thermodynamics and political economy to the twentieth-century ideals of Taylorism and Fordism, Rabinbach demonstrates how the utopian obsession with energy and fatigue shaped social thought across the ideological spectrum.

The present study employed the gaze-contingent window paradigm to investigate parafoveal and peripheral cueing and masking effects on saccadic selectivity in a triple-conjunction visual search task. In the cueing conditions, the information shown outside the gaze-contingent window was restricted to the feature or feature pair shared between the target and a particular distractor type. In the masking conditions, no stimulus features were shown outside the window. Significant cueing and masking effects on saccadic selectivity were observed for saccades directed at (...) items within the window, where all features were visible across experimental conditions. Cueing a particular feature or feature pair biased saccadic selectivity towards this feature or feature pair, while masking generally reduced saccadic selectivity. These findings support the concept of visual guidance being a preattentive process that operates in parallel across the display. © 2001 Published by Elsevier Science Ltd. (shrink)

dickenson briefly mentions that peripheral opioid receptors somehow become active following inflammation and that the appearance of endogenous opioid peptides at the injury site may be related to immune cell proliferation. Recent findings elucidate the underlying mechanisms in more detail and provide an incentive for the development of a novel generation of analgesics devoid of typical central opioid side effects.