Presence Of Fatigue Research Articles

Ensayo clínico sobre el efecto de la terapia Vojta en personas con esclerosis multiple. Un estudio piloto

IntroductionDifficulty in walking, balance and the presence of fatigue are the main causes that generate greater disability in patients with multiple sclerosis (MS), requiring a treatment model aimed at improvement. ObjectiveThis study investigated the effects of Vojta therapy on walking, balance and fatigue in people with MS and to determine if it is a technique of choice in this type of users. Material and methodsExperimental study, in the form of a prospective and controlled clinical study. The sample used after the inclusion and exclusion criteria is 14 users (n = 14), selected from the population currently available for treatment by the Multiple Sclerosis Association of Extremadura (EMEX). The control group received physiotherapy twice a week and the intervention group, in addition to the agreed physiotherapy, received 2 sessions of Vojta therapy per week for 6 weeks and the results was evaluated at the end of these weeks and at the end of the month of no intervention. The variables studied were gait, balance and fatigue. ResultsWhen comparing the physiotherapy intervention on physiotherapy plus the use of Vojta therapy, the results are statistically significant with improvements in both gait (p = 0.018) and balance (p = 0.026), establishing how the use of Vojta therapy improves gait and balance in the representation sample. After the month of non-intervention with Vojta therapy, the improvements in the intervention group remain statistically significant (p = 0.05 in gait and p = 0.021 in balance). ConclusiónIn the sample studied, the use of Vojta therapy achieves an improvement in both walking speed and balance in patients with MS. Further research is necessary on which techniques are most effective within the treatment of balance, gait and fatigue in MS, with randomised clinical trial models and more numerous representative samples.

Balance impairment and lower limbs strength in patients with COPD who fell in the previous year.

Fall-related causes in patients with COPD might be associated to functional balance impairments and greater disease severity. We aimed to evaluate the reasons for falls in patients with COPD who had presented any fall during the previous year. This is a cross-sectional study. All COPD's GOLD classifications (mild, moderate, severe, and very severe) patients were recruited. In order to participate, patients ought to be clinically stable and without any exacerbation within 30 days prior to study entry. History of falls was self-reported by patients through an interview. Pre and post bronchodilator (salbutamol 400 μg) spirometry was performed. All patients accomplished postural balance tests such as the Berg Balance Scale, Falls Efficacy Scale-International, Time up and Go, Functional Reach test, Tinetti test and Chalder Scale; furthermore, lower limbs muscle strength (muscle dynamometry) and the COPD Assessment Test (CAT) were assessed. Ninety-six patients with COPD were evaluated and divided into two groups stratified according to any positive history of falls in the previous year. Patients with COPD who had any fall in the previous year presented older age (p=0.01), higher BMI (p=0.04) and worse pulmonary function than those who did not fall. The risk of falls was increased in patients with lower muscle strength in the lower limbs (OR 2.9, CI 95%;1.6 to 3.9), age greater than 65 years (OR 2.7, CI 95%;1.3 to 3.4), BMI greater than 28.8 kg/m2 (OR 3.2, CI 95%;1.1 to 5.6), very severe airway obstruction (OR 3.9, CI 95%;2.2 to 3.9) and fatigue (OR 3.2, CI 95%;1.5 to 5.3). Impaired body balance, reduced lower limb strength, disease severity, presence of fatigue and elevated BMI are important factors for falls in patients with COPD.

P294 On the way to disease control: Fatigue as part of a novel composite endpoint in an analysis of a prospective open label observation trial

Abstract Background Ambitious therapeutic goals in the therapy of inflammatory bowel disease need more stringent individual endpoints. Several definitions for composite endpoints are under evaluation to describe disease control. Most commonly symptomatic (PRO2) remission is combined with endoscopic response, histology and/or biomarker remission. Here we explore the addition of fatigues as a lead problem reported by patients with IBD as part of a composite endpoint. Methods We have conducted an interim analysis of an ongoing open label study of patients with Crohn’s disease (CD) and ulcerative colitis (UC) assigned to anti-TNF therapy, vedolizumab, ustekinumab or tofacitinib. Patients are scheduled for evaluations at start of the respective therapy and at weeks 2, 6, 14, 26 and 52. Endoscopies are conducted before therapy and at weeks 14 and 52. Clinical remission (CR) was defined as CDAI < 150 and reduction of partial Mayo score (pMayo) > 50% vs. baseline at week 14. All patients who are not in CR and/or no improvement in endoscopy at week 14 are assessed for a switch in the mechanism of action and observation schedules after a switch are reset to week 0. FACIT-F scores <30 was defined as clinically relevant fatigue. Results Fatigue was present in 52% patients (39/75) at baseline. 54% (25/46) of the patients achieved CR at week 14 while 46% (21/46) did not meet CR criteria (non-responder). Fatigue at baseline was persistent at week 14 in 12% (3/25) of CR responders, in contrast to 43 % (9/21) of non-responders. 64% (21/33) of all patients reached a combined endpoint of CR and absence of fatigue. If fatigue was present at baseline (n = 25), fatigue response was observed in 52% (13/25) of the patients, while CR was only reached in 40% (10/25) and the combined endpoint of CR and fatigue response in 24% (6/25) of the patients at week 14. In contrast, 71% (15/21) of patients without fatigue at baseline reached CR at week 14. Absence of fatigue at baseline thus increased the chance of CR at week 14, with an OR of 3.75 [1.031 – 11.50] (p = 0.0422 in Fisher’s exact test). Conclusion Fatigue is an important complaint strongly impacting the patients’ quality of life. A composite endpoint including fatigue and clinical remission (based on pMayo and CDAI) can be reached in a significant percentage of patients treated with biological therapies. Presence of fatigue at baseline might serve as a strong marker for clinical non-response at week 14. Further evaluation and replication of this novel composite endpoint will be conducted in our ongoing trial with a particular focus on inclusion of endoscopies and long-term outcome.

Identification of restless legs syndrome in polysomnography studies and its association with other variables

Restless legs syndrome (RLS) is a movement disorder characterized by an uncontrollable urge to move the legs in response to an unpleasant sensation. The coexistence of RLS and other sleep and mood disorders may require adjustment in the therapeutic strategy. The objective of this study was to determine the prevalence of RLS in adults studied with polysomnography and to evaluate its association with other sleep and mood disorders. Descriptive cross-sectional study. We included adults studied with polysomnography between 2015 and 2021. We collected information on their medical history, polysomnographic data and mood and sleep disorders using a self-administered written questionnaire which is part of the routine evaluation of all patients referred to this sleep unit. These variables were compared between patients with and without RLS. We included 406 patients. The prevalence of RLS was 36.7% (n = 149). The presence of fatigue (45.3%), moderate to severe insomnia (38.9%) and depression (45.6%) was higher in subjects with RLS. We did not find differences regarding daytime sleepiness and anxiety symptoms. Periodic Limb Movements (PLM) was not associated with RLS (p = 0.26) and its prevalence was low. The prevalence of RLS in subjects studied with Polysomnography is high and it was associated with clinically significant fatigue, insomnia and depression. These symptoms should be identified in order to establish an adequate therapeutic strategy. The prevalence of periodic limb movements was low and was not linked with RLS. These findings contrast with previous publications. Therefore, it requires additional studies to clarify the cause of this variation.

FATIGUE IN MULTIPLE SCLEROSIS

The article discusses and analyzes literature data on the phenomenon of fatigue in patients with multiple sclerosis. More than 80% patients with multiple sclerosis complain of fatigue, which significantly limits their functional capacity and negatively affects the quality of life. In general, fatigue is a complex, multidimensional phenomenon that consists of subjective (one's own feeling of fatigue) and objective (quantitative characteristics of fatigue when performing a certain activity) components. At present, the most accessible method of fatigue assessment is patient survey. In multiple sclerosis, fatigue can be primary (as a direct consequence of the disease) or secondary (as a consequence of reduced functional capabilities, sleep disorders, chronic pain, side effects of medications, etc). In general, fatigue in multiple sclerosis is a heterogeneous phenomenon based on various etiopathogenetic mechanisms. We reviewed neuroimaging markers of global and focal lesions of the white and gray matter of the brain that are associated with the presence of fatigue in patients with multiple sclerosis. The impact of peripheral immune-inflammatory processes on the fatigue occurrence was shown which was realized via humoral, cellular, and neuronal mechanisms. We analyzed the role of inflammatory processes in the brain and spinal cord in the form of activation of microglia with hyperproduction of cytokines, which ultimately disrupts dopamine metabolism and reduces the affinity of dopamine receptors. The excess activity of certain functional components of the nervous system in the form of higher engagement of the motor structures of the brain and spinal cord during the performance of standard motor tasks was highlighted. The role of disruption of interoceptive mechanisms (perception and monitoring of the body's internal environment via hormonal, immune, metabolic, temperature, pain, and visceromotor signals) in the occurrence of fatigue in multiple sclerosis was shown. The paper underlines modern principles of fatigue correction based on these mechanisms.

Shiatsu associado à fisioterapia na dor e fadiga em pessoas com esclerose múltipla

Abstract Introduction: Pain and fatigue are common symptoms in multiple sclerosis (MS). Shiatsu, a technique that uses the pressure of fingers, associated with manual therapy, exercises and stretching can be used to control these symptoms. Objective: To evaluate the effect of Shiatsu associated with physical therapy on pain and fatigue on people with MS. Methods: Randomized clinical trial with people diagnosed with MS divided into two groups: intervention group (IG) - Shiatsu-associated physical therapy (n = 9), and control group (CG, n = 8). Participants were assessed before and after treatment by the Expanded Disability Status Scale (EDSS), Neuropathic Pain Questionnaire (DN4), Visual Analog Scale (VAS) and Fatigue Impact Scale (MFIS), and description of sociodemographic. Results: Seventeen people with MS (9 men) aged 45.18 ± 3.06 years participated in this study. In the total sample, the average of DN4 was 1.65 ± 20.02, VAS was 2.29 ± 2.80, MFIS was 39.47 ± 29.67, and 52.9 % had a score > 38 in the MFIS that corresponds to presence of fatigue. The values pre/post-intervention/grade of p, respectively in the IG were DN4: 2.78 ± 2.16/2.0 ± 2.12/0.432, EVA: 3.22 ± 3.27/0.33 ± 1.00/0.023, total MFIS: 44.44 ± 35.91/35 ± 31.70/0.068. In the CG the values were DN4 : 0.38 ± 0.744/2.25 ± 2.71/0.054, EVA : 1.25 ± 1.83/3.63 ± 2.38/0.043, and MFIS : 33.88 ± 21.68/25.13 ± 24.22/0.379. Conclusion: Shiatsu associated with Physiotherapy was effective in improving pain and fatigue in individuals with MS.

Do Anxiety and Depression Predict Persistent Physical Symptoms After a Severe COVID-19 Episode? A Prospective Study.

Background: Persistent physical symptoms are common after a coronavirus disease 2019 (COVID-19) episode, but their pathophysiological mechanisms remain poorly understood. In this study, we aimed to explore the association between anxiety and depression at 1-month after acute infection and the presence of fatigue, dyspnea, and pain complaints at 3-month follow-up.Methods: We conducted a prospective study in patients previously hospitalized for COVID-19 followed up for 3 months. The Hospital Anxiety and Depression Scale (HAD-S) was administered by physicians at 1-month follow-up, and the presence of fatigue, dyspnea, and pain complaints was assessed at both 1 month and 3 months. Multivariable logistic regressions explored the association between anxiety and depression subscores and the persistence of each of the physical symptom at 3 months.Results: A total of 84 patients were included in this study (Median age: 60 years, interquartile range: 50.5–67.5 years, 23 women). We did not find any significant interaction between anxiety and the presence of fatigue, dyspnea, or pain complaints at 1 month in predicting the persistence of these symptoms at 3 months (all p ≥ 0.36). In contrast, depression significantly interacted with the presence of pain at 1 month in predicting the persistence of pain at 3 months (OR: 1.60, 95% CI: 1.02–2.51, p = 0.039), with a similar trend for dyspnea (OR: 1.51, 95% CI: 0.99–2.28, p = 0.052).Discussion and Conclusion: Contrary to anxiety, depression after an acute COVID-19 episode may be associated with and increased risk of some persistent physical symptoms, including pain and dyspnea.

Manifestations and risk factors of post COVID syndrome among COVID-19 patients presented with minimal symptoms - A study from Kerala, India.

Background:COVID 19 is associated with the development of post COVID syndrome usually manifested as fatigue, anxiety, joint pain, headache, chest pain, dementia, depression, and dyspnea. Documented evidence of post COVID syndrome among patients with asymptomatic or mild infections, especially from India is less.Methodology:A community based prospective cohort study was conducted among 154 patients admitted in CFLTCs of coastal Thiruvananthapuram, Kerala during May-August 2020. They were enrolled at the time of their admission to CFLTCs and were followed up for three months after discharge. The discharged patients were followed up at regular intervals of three weeks and three months by telephonic interview using a structured proforma.Results:Out of the 154 patients followed up, 57 (37%) were men and 97 (63%) were women. The mean (SD) age of study participants was 31.49 (18.4) years. At least one symptom was present in 120 (78.0%) patients at the time of admission. Cough (29, 18.8%), fever (26, 16.8%), headache (25, 16.2%), rhinitis (23,14.9%) and sore throat (18, 11.7%) were the major symptoms reported at the time of admission. At the end of three weeks, 11 (7.1%) patients and at the end of three months 18 (11.7%) patients reported to have symptoms. Fatigue (5.8%), headache (5.8%) myalgia (3.2%) joint pain (2.5%) and exertional dyspnea (2.5%) were the predominant symptoms. Presence of fatigue, cough and breathlessness at the time of admission, and presence of another COVID positive family member were significantly associated with the appearance of post COVID symptoms.Conclusion:Post COVID syndrome is not uncommon in COVID 19 patients with minimal symptoms. Understanding long term consequences of COVID 19 is as important as management of acute COVID 19 due to its multisystem involvement and its implications on health and well-being.

Amelioration of fatigue in chronic dialysis patients with dialysis solution employing electrolyzed water containing molecular hydrogen (H2) and its association with autonomic function balance

BackgroundEnhanced oxidative stress is involved with fatigue in hemodialysis (HD) patients. Molecular hydrogen (H2) could improve the redox status. Thus, the study examines whether HD solution rendered by electrolyzed water containing H2 (E-HD) could impact the fatigue and autonomic balance of patients.MethodsThis single-arm, prospective observational study examined 95 patients on chronic HD (54 males; mean age and HD duration; 71.4 years and 10.6 years). Fatigue status on HD and HD-free days was compared between control HD (CHD) and 8 weeks after commencement of E-HD, using a visual analog scale (VAS) and an original scale. Autonomic balance was analyzed with the degree of activities of the sympathetic and parasympathetic nervous system via frequency analysis of a continuous beat interval.ResultsPatients were classified into three groups according to the presence of subjective fatigue during the period of CHD: Group A (40.0%), fatigue only on HD days; Group B (11.6%), presence of fatigue on both HD and HD-free days; and Group C (48.4%), freedom from fatigue. During the 8-week observation period of E-HD, VAS scores were significantly decreased on HD days in Group A, while Group B showed no significant changes in VAS on HD days, but significant decreases on HD-free days. No consistent changes were found in Group C. Significant increases in percentages of patients who reported absence of fatigue were seen in Group A on HD days and in Group B on HD-free days in week 8. Regarding changes in autonomic balance parameters after E-HD commencement, a positive correlation was identified between changes in VAS and autonomic balance in Group A.ConclusionE-HD may ameliorate fatigue in patients with subjective symptoms on HD and HD-free days. The influence of autonomic balance by E-HD and its impact on fatigue needs to be elucidated.

Motor symptoms and the quality of life of relapsing-remitting multiple sclerosis patients in a specialized center in South of Brazil.

Spasticity, fatigue, muscle weakness and changes in gait are some of the main motor symptoms of Multiple Sclerosis (MS). These changes can interfere with the patients' quality of life. To characterize the motor and quality of life symptoms in patients with relapsing-remitting Multiple Sclerosis at a specialized center. Fifty five patients at the Neuroimmunology Outpatient Clinic of the Hospital de Clínicas de Porto Alegre were evaluated for fatigue (Fatigue Severity Scale - FSS), walking ability (Functional Ambulation Categories - FAC), impact of MS on walking (Multiple Sclerosis Walking Scale-12 - MSWS-12), walking speed (10-Meter Walk Test - 10MWT and the Times 25-foot Walk test - T25FW), functional independence (Barthel Index - BI), functional mobility (Timed Up and Go - TUG), and quality of life (Multiple Sclerosis Impact Scale - MSIS-29). The patients were mostly women (69.1%), with average age of 43.3 (±12.1) years old, with time since diagnosis of 8.2 (±5.3) years, and EDSS average of 4.3 (±1.3). On the BI, the mean was 96.6 (±5.7) points and 80% of the patients had FAC 5. At MSIS-29, patients had a higher average score on the psychological scale (19.5±26.7) than on the physical scale (10.2±23.6). Most patients (69.1%) presented fatigue. The patients had preserved functional independence and functional walking ability and presence of fatigue. There was minimal impact of MS on patients' quality of life.

The psychological correlates of fatigue in Parkinson's disease: Contribution of maladaptive metacognitive beliefs

IntroductionPsychological factors can underlie fatigue in neurological disorders, but its relationship to fatigue in Parkinson's disease (PD) has not been explored. We assessed the association between maladaptive metacognitive beliefs and presence of fatigue in PD. MethodsNinety-eight consecutive outpatients with PD (61% male; median age: 66.50 years) were assessed in terms of demographic, clinical, medication treatment, cognitive, or behavioural characteristics including metacognitive beliefs (Metacognitions Questionnaire-30 or MCQ). Fatigue was ascertained by PD-related diagnostic criteria. Univariate statistical approach (Mann-Whitney and Pearson chi-square tests) was used to compare PD patients with (f-PD) or without (nf-PD) fatigue in terms of demographic, clinical, medication treatment, cognitive, behavioural, and metacognitive measures. ResultsTwenty-one PD patients (21%) displayed fatigue. The f-PD group scored higher on the MCQ-total score, MCQ-Cognitive Confidence subscale, and all behavioral measures (ps < 0.01) relative to nf-PD. They also had a more advanced Hoehn and Yahr stage and Unified Parkinson's Disease Rating Scale-III score. ConclusionMaladaptive metacognitive beliefs such as the lack of cognitive confidence may play a key role to trigger and maintain fatigue in PD. Future studies, using a multivariate statistical approach, are needed to confirm these preliminary findings in a larger sample of patients with fatigue and to assess if modification of such metacognitive beliefs has the potential to ameliorate fatigue in PD.

Nursing management of fatigue in cancer patients and suggestions for clinical practice: a mixed methods study

BackgroundFatigue is a complex and frequent symptom in cancer patients, influencing their quality of life, but it is still underestimated and undertreated in clinical practice. The aims of this study were to detect the presence of fatigue in cancer patients, describe how patients and nurses perceived it and how nurses managed fatigue.MethodsThis is a mixed methods study. Data were collected in two oncological wards using the Brief Fatigue Inventory (BFI), an ad hoc questionnaire, patient interviews, focus groups with nurses and the review of nursing records. Interviews and focus groups were analysed through thematic analysis. We used SPSS 22.0 for quantitative data and Nvivo 10 for qualitative data analysis.ResultsA total of 71 questionnaires were analysed (39 males, mean age 65.7 years). Fatigue was reported 5 times (7%) in nursing records, while in 17 cases (23.9%) problems associated to it were reported. Twelve patients were interviewed. Five themes were identified: feeling powerless and aggressive, my strategies or what helps me, feeling reassured by the presence of family members, feeling reassured by nurses’ gestures, and being informed. Three themes were identified through the focus groups: objectivity and subjectivity in the assessment of fatigue, nurses’ contribution to the multidisciplinary management of fatigue, and difficulty in evaluating outcomes.ConclusionsThe approach to the management of fatigue was unstructured. Patients were satisfied with the care they received but needed more information and specific interventions. Useful aspects were identified that could be used to change health professionals’ approach towards the management of fatigue.

Long COVID and chronic fatigue syndrome: A survey of elderly female survivors in Egypt.

ObjectivesThis study aimed to investigate post‐COVID‐19 symptoms amongst elderly females and whether they could be a risk factor for developing chronic fatigue syndrome (CFS) later on.MethodsThis was a retrospective cross‐sectional study, in the form of an online survey. A total of 115 responses were finally included.ResultsThe mean age was 73.18 ± 6.42. Eighty‐nine reported symptoms in the post‐recovery period; of these 54 had no symptoms of CFS, 60 were possible, and only 1 was probable. Fatigue was reported by 66, musculoskeletal symptoms by 56, and sleep problems by 73. Twenty‐nine patients visited a doctor's office as a result. Post‐recovery symptoms were significantly related to stress, sadness and sleep disturbances. Also, stress, sadness, sleep disturbances, fatigue, cognitive impairment, and recurrent falls were all significantly associated with CFS‐like symptoms.ConclusionsFrom our findings, the presence of fatigue, cognitive impairment, stress, sadness, sleep disturbances and recurrent falls in the post‐recovery period were all significantly associated with CFS‐like symptoms. To conclude it would be reasonable to screen for long COVID and consider the potential for developing CFS later on. Whether it can be a risk factor for developing CFS‐like other viral infections will need more larger scale studies to confirm this.

New Measures of Heart Rate Variability Based on Subband Tachogram Complexity and Spectral Characteristics for Improved Stress and Anxiety Monitoring in Highly Ecological Settings

Prediction of mental states, such as stress and anxiety, can be important in situations where reduced job performance due to increased mental strain can lead to critical situations (e.g., front-line healthcare workers and first responders). While recent advances in biomedical wearable sensor technologies have allowed for collection of multiple physiological signals in everyday environments, numerous challenges emerge from such uncontrolled settings, including increased noise levels and artifacts, confounding effects from other psychological states (e.g., mental fatigue), as well as physical variables (e.g., physical activity). These factors can be particularly detrimental for heart rate variability (HRV) measures which, in controlled settings, have been shown to accurately track stress and anxiety states. In this paper, we propose two new ways of computing HRV proxies which we show are more robust to such artifacts and confounding factors. The proposed features measure spectral and complexity properties of different aspects of the autonomic nervous system, as well as their interaction. Across two separate “in-the-wild” datasets, the proposed features showed to not only outperform benchmark HRV metrics, but to also provide complementary information, thus leading to significantly greater accuracy levels when fused together. Feature ranking analysis further showed the proposed features appearing in 45–64% of the top features, thus further emphasizing their importance. In particular, features derived from the high frequency band showed to be most important in the presence of fatigue and physical activity confounding factors, thus corroborating their importance for mental state assessment in highly ecological settings.

Serotonergic central tone in Parkinson’s disease with fatigue: Evidence from the loudness dependence of auditory evoked potentials (LDAEP)

Central fatigue in Parkinson’s disease (PD) is a common and disabling symptom that further worsens the patients’ quality of life. A deficit in the serotonergic system may be implicated in the occurrence of fatigue in patients with PD as well as in those with other chronic conditions characterized by fatigue. The loudness dependence of auditory evoked potentials (LDAEP) is a neurophysiological tool that has proved to be effective in measuring the serotonergic central function in vivo. The aim of the present study was to assess central serotonergic activity in PD patients and to explore its possible association with the presence of fatigue. LDAEP was recorded in 38 PD patients (26 without fatigue – PDnF and 12 with fatigue – PDF) and 34 healthy controls. A significant difference between parkinsonian patients and controls emerged, with patients displaying stronger LDAEP values (which reflect a lower serotonergic central tone) than controls. By contrast, no differences in LDAEP emerged between PDF and PDnF. Our electrophysiological data confirmed the presence of a deficit in serotonergic central transmission in PD. An association between this deficit and fatigue was not demonstrated. It is likely that an altered dopamine/serotonin balance, rather than a serotonin deficit alone, is involved in the genesis of central fatigue. This complex and multifaceted symptom is related above all to a dysfunction in the striato-thalamo-cortical loop that connects the neostriatum to the frontal lobe and is strongly affected by motivation.

The Assessments of Psychological Dynamics in Daily Life of Individual With Severe Motor and Intellectual Disabilities (SMID): Relationship Between the Inter-Stimulus Interval on Communications and the SMID’s Heart Rate

Central fatigue in Parkinson’s disease (PD) is a common and disabling symptom that further worsens the patients’ quality of life. A deficit in the serotonergic system may be implicated in the occurrence of fatigue in patients with PD as well as in those with other chronic conditions characterized by fatigue. The loudness dependence of auditory evoked potentials (LDAEP) is a neurophysiological tool that has proved to be effective in measuring the serotonergic central function in vivo. The aim of the present study was to assess central serotonergic activity in PD patients and to explore its possible association with the presence of fatigue. LDAEP was recorded in 38 PD patients (26 without fatigue – PDnF and 12 with fatigue – PDF) and 34 healthy controls. A significant difference between parkinsonian patients and controls emerged, with patients displaying stronger LDAEP values (which reflect a lower serotonergic central tone) than controls. By contrast, no differences in LDAEP emerged between PDF and PDnF. Our electrophysiological data confirmed the presence of a deficit in serotonergic central transmission in PD. An association between this deficit and fatigue was not demonstrated. It is likely that an altered dopamine/serotonin balance, rather than a serotonin deficit alone, is involved in the genesis of central fatigue. This complex and multifaceted symptom is related above all to a dysfunction in the striato-thalamo-cortical loop that connects the neostriatum to the frontal lobe and is strongly affected by motivation.

Fatigue is associated with depression independent of excessive daytime sleepiness in the general population.

This study aimed to investigate sleep problems and comorbid conditions associated with fatigue in the general population. The data were obtained from a nationwide cross-sectional survey conducted in 2018. The Fatigue Severity Scale was used to assess fatigue. We examined sleep habits, such as workday sleep duration, chronotype, and free-day catch-up sleep, excessive daytime sleepiness (EDS), depression, and other comorbid conditions. We conducted multiple logistic regression analysis with the presence of fatigue as a dependent variable. Of 2,493 adults aged 19 to 92 years, 50% men, mean age was 47.9± 16.4 years.The average workday sleep duration was 7.1 ± 1.1h, and the prevalence of fatigue was 31%. After adjusting for potential confounders, fatigue was associated with EDS (odds ratio [OR] 3.751, 95% confidence interval [CI] 2.928-4.805), depression (OR 3.736, 95% CI 2.701-5.169), perceived insufficient sleep (OR 1.516, 95% CI 1.249-1.839), free-day catch-up sleep (OR 1.123, 95% CI 1.020-1.235), less alcohol intake (OR 0.570, 95% CI 0.432-0.752), and physical inactivity (OR 0.737, 95% CI 0.573-0.948). On subgroup analysis, fatigue was additionally associated with short workday sleep duration (OR 0.899, 95% CI 0.810-0.997) in individuals without EDS. However, among those with EDS, only depression (OR 2.842, 95% CI 1.511-5.343) and less alcohol intake (OR 0.476, 95% CI 0.247-0.915) were associated with fatigue. Fatigue was significantly associated with depression independent of EDS. Further research is warranted to better understand the pathophysiological relationship between fatigue, depression, and sleep.

Effects of Combined HIIT and Stroop on Strength Manifestations, Serve Speed and Accuracy in Recreational Tennis Players

Background: The importance of the serve in tennis players’ performance is well known but no previous studies have analyzed the effects of both physical and cognitive fatigue on the speed and accuracy of the serve. This study analyzed the effect of a High-Intensity Interval Training (HIIT) with and without cognitive load on serve speed and accuracy, spirometry, and strength manifestation. Methods: 32 recreational players (25 men and 7 women; aged 21.40 ± 1.52 years) performed a HIIT and a HIIT with a Stroop in recovery phases before performing a series of tennis services. Speed and accuracy of the services, spirometry, and strength manifestations were registered. Results: The main findings of the study showed that strength manifestations and spirometry were not affected by either protocol. A decrease in serve speed was observed in both protocols (p &lt; 0.001) but service accuracy did not show impairments (p = 0.66). Conclusion: A combination of physical and mental fatigue may decrease serve speed but will not affect strength manifestations or spirometry negatively. These results could be caused by a response of the central nervous system to maintain the accuracy of the ball in presence of fatigue.

Morphological profiles of fatigue in Sarcoidosis patients

IntroductionSarcoidosis is a chronic inflammatory disease often associated with chronic fatigue. Prevalence of fatigue can be measured via neuropsychological testing. Its pathophysiology is insufficiently understood. Structural analysis might help with the development of novel treatment methods. MethodsWe recruited 30 sarcoidosis patients whose fatigue severity and depressive symptom presence was measured through validated neuropsychological self-assessment. T1-weighted structural images were acquired and VBM preprocessing was conducted. Total scores of these tests and subscales were correlated through multiple regression analysis to the brain morphometry. ResultsFatigue severity positively correlated with gray matter volumes in the striatum, the cingulate cortex and the cerebellum and negatively in the parietal and temporal lobe and posterior insula. Subscale analysis indicated a correlation between cognitive fatigue and striatum involvement as well as between physical and psychosocial fatigue and cerebellar alterations. DiscussionStructural analysis delineated two structural patterns associated with the presence of fatigue. One such pattern mainly seemed to involve structures with a focus on decision-making processes while the other indicated alterations in regions vital for perception. Fatigue seems to be a heterogeneous disease, where varying dimensions of reported symptoms correlate with different patterns of structural changes.

Fatigue prevalence and associated factors in patients with multiple system atrophy.

Fatigue was reported a determinant of poor quality of life in multiple system atrophy (MSA) patients. This study aimed to determine fatigue prevalence and associated demographic, motor, and non-motor symptoms in MSA patients. A total of 174 MSA patients met "Probable" diagnostic criteria were included in this cross-sectional study. Fatigue Severity Scale (FSS) was used to measure fatigue prevalence. Unified MSA Rating Scale (UMSARS), Non-Motor Symptoms Scale (NMSS), Hamilton Depression Rating Scale-17 (HDRS-17), Hamilton Anxiety Scale (HAMA), Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), REM Sleep Behavior Disorder Screening Questionnaire (RBDSQ), and Mini-Mental State Exam (MMSE) were used for comprehensive clinical assessments. Nonparametric Mann-Whitney or Pearson's chi-square test was used to compare the patient score with or without fatigue (defined as a mean FSS score≥4). Binary logistic regression analysis was performed to determine features independently associated with the presence of fatigue. Fifty (28.7%) patients enrolled reported fatigue. Results of multivariate analysis revealed that anxiety (OR=3.01, 95% CI=1.43-6.31), excessive daytime sleepiness (OR=2.70, 95% CI=1.23-5.90), and use of sleep medicine (OR=3.58, 95% CI=1.39-9.24) were significantly associated with fatigue in MSA patients. Fatigue is common in our MSA patients. Anxiety, excessive daytime sleepiness, and current sleep medicine use may be associated with an increased risk of fatigue. However, the severity of motor symptoms may not be associated with fatigue. Our findings highlight the need to identify, investigate, and treat fatigue in MSA.