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Decoupling Stable Cyclic Deformation From Defect Accumulation in Metals.

Fatigue resistance in metals is fundamentally constrained by a long-standing dilemma: the strain hardening required to suppress deformation localization is typically achieved through the accumulation of dislocations and other defects that ultimately promote fatigue damage. Whether cyclic plasticity can be sustained without progressive defect storage remains an unresolved question. Here we demonstrate that this limitation can be overcome through the introduction of amorphous nanoparticles into a crystalline metal matrix. We uncover a cyclic deformation regime characterized by sustained resistan…

Study of the N1-(2,3,4-Trimethoxybenzyl)-N2-{2-[(2,3,4-Trimethoxybenzyl)Amine]Ethyl}-1,2-Ethandiamine Compound Effect on the Physical Performance of Animals.

We studied the effect of N1-(2,3,4-trimethoxybenzyl)-N2-{2-[(2,3,4-trimethoxybenzyl)amino]ethyl}-1,2-ethanediamine (compound ALM-802) on the physical performance of mice after acute fatigue. The animals' performance was assessed on a treadmill. The criterion for assessing exercise tolerance was the length of the distance passed when running on a treadmill until complete fatigue. To assess the actoprotective activity of compound ALM-802, we used a method of stepwise increase in load with an initial running speed of 42 cm/sec and its subsequent increase by 5 cm/sec every 5 min. The maximum speed…

Effects of Foot-Strike Pattern on Neuromuscular Function During a Prolonged Graded Run.

PURPOSE: To study whether, during typical-level running, non-rear-foot strikers (non-RFS) or rear-foot strikers (RFS) presented a similar or different extent of neuromuscular fatigue after a prolonged graded run. METHODS: Sixteen experienced male trail runners (8 non-RFS and 8 RFS) performed a 2.5-hour treadmill graded running exercise. Before and after exercise, neuromuscular tests were performed to assess neuromuscular fatigue of the plantar flexors. Biomechanical gait parameters were acquired with an instrumented treadmill, and electromyographic activity of the lower-limb muscles was colle…

Patient-reported outcomes from the phase 3 ADMIRAL trial in patients with FLT3-mutated relapsed/refractory AML.

Patient-reported outcomes (PROs) can inform treatment selection and assess treatment value in acute myeloid leukemia (AML). We evaluated PROs from the ADMIRAL trial (NCT02421939) in patients with FLT3-mutated relapsed/refractory (R/R) AML. PRO instruments consisted of Brief Fatigue Inventory (BFI), Functional Assessment of Cancer Therapy-Leukemia (FACT-Leu), Functional Assessment of Chronic Illness Therapy-Dyspnea Short Form (FACIT-Dys SF), EuroQoL 5-Dimension 5-Level (EQ-5D-5L), and leukemia treatment-specific symptom questionnaires. Clinically significant effects on fatigue were observed wit…

Cross-sectional associations of maladaptive sleep-hygiene behaviors with athlete engagement among provincial- and municipal-level athletes in Sichuan, China.

PURPOSE: Maladaptive sleep-hygiene behaviors are potentially modifiable daily practices, yet their relationship with the psychological state that sustains sport involvement remains unclear. This study examined cross-sectional associations among maladaptive sleep-hygiene behaviors (MSHB), multidimensional fatigue, difficulties in emotion regulation, and athlete engagement, including three model-based indirect associations. METHODS: A cross-sectional questionnaire survey was completed by 317 adult athletes recruited from provincial- and municipal-level teams in Sichuan Province, China. Particip…

Evidence for a severe cognitive subgroup in a comprehensive neuropsychological Post-COVID-19 syndrome classification.

Approximately 7% of adults develop Post-COVID-19 syndrome (PCS). Cognitive impairment is common, but its profile in PCS is not well defined and requires clearer differentiation from general (post-)illness effects. The aim of this study was to identify distinct cognitive profiles in PCS and to characterize them with respect to broader psychological factors such as fatigue, depression, anxiety, and personality. To this end, we assessed cognition, fatigue, depression, anxiety, and personality traits in PCS patients, convalescents (CV), healthy controls (HC), and post-viral syndrome patients (PV) …

Female gender and quality of life outcomes in myasthenia gravis: a systematic review and meta-analysis.

BACKGROUND: Myasthenia gravis (MG) is a rare autoimmune neuromuscular disease characterized by fluctuating muscle weakness and a variable clinical course. While sex differences in MG onset and progression are well documented, the extent to which these disparities affect quality of life (QoL)-particularly through fatigue and psychological burden-remains unexplored. OBJECTIVES: To systematically evaluate gender differences in QoL among MG patients and assess whether psychological factors and fatigue contribute to these disparities. DESIGN: A systematic review and meta-analysis were conducted i…

Footwear technology and biomechanical adaptations in ultramarathon running: a PRISMA-Guided narrative review integrating direct and laboratory evidence.

BACKGROUND: Footwear influences biomechanical strategy, fatigue response, and performance outcomes in trail and ultramarathon running. Yet, much of the current evidence remains fragmented across isolated laboratory trials and small-scale field studies. OBJECTIVE: This review synthesizes findings from 20 verified studies and one preprint to examine how footwear properties-such as midsole cushioning, longitudinal bending stiffness (LBS), heel-to-toe drop, and shoe mass-influence running economy, gait mechanics, and fatigue-related adaptations in prolonged trail environments. METHODS: A systema…

Narrative Review on Post-Stroke Outcomes Through Recognition of Frailty, Sarcopenia, and Palliative Care Needs.

Stroke survivors frequently experience long-term disability, post-stroke fatigue, frailty, sarcopenia, falls, and psychosocial distress, which together drive poorer functional recovery, rehospitalization, institutionalization, and caregiver burden. This narrative review synthesizes contemporary evidence on the prevalence, mechanisms, and clinical impact of post-stroke fatigue, frailty, sarcopenia, and falls and examines their links with palliative care needs, healthcare costs, and emerging telehealth models. A PubMed and Google Scholar search up to October 2025 identified studies on stroke and…

Clinical symptom clusters, neurocognitive function, balance and vestibulo-ocular function in athletes with sport-related concussion.

OBJECTIVE: This cross-sectional study aimed to investigate subjective and objective deficits of neurocognitive function, balance and vestibu … mpulse and dynamic visual acuity test). Clinical symptom clusters (headache/migraine, anxiety/mood, fatigue, cognitive, vestibular, ocular) were determined for each patient using the Sport Concussion Assessment Tool, 5th edition symptom evaluation. Independent t-tests or Mann-Whitney U tests were calculated to test for group differences in the whole cohor …

Advanced Testing Protocols Simulate Failures and Validate Antioxidant Polyethylene in Ankle Implants.

Total ankle replacement (TAR) has become an effective treatment for end-stage ankle osteoarthritis. Multiple factors, including patient characteristics, surgical technique, alignment, and bearing surfaces, influence TAR survivorship. Polyethylene (PE) fatigue is a key consideration in improving outcomes. This study establishes a novel, clinically relevant testing protocol incorporating varus-valgus rotation to simulate polyethylene fatigue failures observed in mobile-bearing total ankle replacements. Using this robust methodology, we evaluated the impact of oxidation and antioxidant stabilizat…

Effects of Trans-spinal Direct Current Stimulation on Gait Function in People With Multiple Sclerosis.

BACKGROUND AND PURPOSE: Multiple sclerosis (MS) presents significant challenges due to its inflammatory and degenerative nature, often manifesting in debilitating symptoms such as gait disturbances. Non-invasive stimulation techniques, such as trans-spinal direct current stimulation (tsDCS), offer promising avenues for enhancing functional recovery, but evidence on tsDCS effectiveness in neurological disorders remains sparse. This study aimed to investigate the effects of cathodal tsDCS on gait function and fatigue in people with MS (pwMS) compared to sham tsDCS. METHODS: Twenty-two pwMS rece…

Когнитивное функционирование у выживших жертв токсического синдрома нефти: изучение конкретных случаев через четыре десятилетия после эпидемии.

Фон: Синдром токсического масла (СТО) является одной из основных эпидемий, передаваемых через продукты питания, которая произошла в Испании в мае 1981 года и была вызвана перевариванием изнасилованного масла анилиной. Хотя соматические последствия ГС хорошо задокументированы, ее долгосрочные когнитивные последствия остаются недостаточно понятными более чем через четыре десятилетия после воздействия. Методы: В рамках данного исследования по вопросам контроля 50 лиц, имеющих клинически подтвержденную ГС, были сопоставлены с 50 мерами контроля за состоянием здоровья, соответствующими возрасту, по

Совпадение в аннотации оригинала
Background: Toxic oil syndrome (TOS) was a major food-borne epidemic that occurred in Spain in May 1981, caused by the ingestion of rapeseed … pants completed a comprehensive neuropsychological assessment, along with questionnaires evaluating fatigue, anxiety, depression, and health-related quality of life. Multivariate regression models were adjusted for demographic and vascular risk factors, as well as for mood symptoms, fatigue, and use of central nervous system-acting medications. Structural …

The impact of exercise during radiotherapy on treatment-related side effects in breast cancer patients: A systematic review and meta-analysis.

PURPOSE: Radiation therapy for breast cancer often causes side effects like cancer-related fatigue, depression, and sleep disorders, impacting health-related quality of life, psychosocial aspects, and physical function. Exercise therapy is commonly used to manage cancer-related fatigue, but its effectiveness remains uncertain due to varying patient conditions and adherence. This systematic review aims to assess exercise interventions during radiotherapy for their effects on physiological and psychological side effects in breast cancer patients, clarifying efficacy and exploring different inter…

Digital cognitive behaviour therapy for insomnia (dCBT-I): Chronotype moderation on intervention outcomes.

Using data from 1721 participants in a community-based randomized control trial of digital cognitive behavioural therapy for insomnia compared with patient education, we employed linear mixed modelling analyses to examine whether chronotype moderated the benefits of digital cognitive behavioural therapy for insomnia on self-reported levels of insomnia severity, fatigue and psychological distress. Baseline self-ratings on the reduced version of the Horne-Östberg Morningness-Eveningness Questionnaire were used to categorize the sample into three chronotypes: morning type (n = 345; 20%); intermed…

Effects of different percentages of body weight-supported treadmill training in Parkinson’s disease: a double-blind randomized controlled trial.

BACKGROUND/AIM: Body weight-supported treadmill training (BWSTT) might have greater effects than conventional treadmill training (TT) in neurological diseases such as Parkinson’s disease (PD). The aim of this study was to evaluate the effects of different percentages of BWSTT on gait, balance, quality of life, and fatigue in PD. MATERIALS AND METHODS: Thirty-five patients with moderate to advanced PD were randomized into three BWSTT groups according to the supported percentage of body weight: 0% BWSTT (control group; unsupported TT), 10% BWSTT, or 20% BWSTT. Five patients were excluded due to…

Non-motor symptoms in early Parkinson's disease with different motor subtypes and their associations with quality of life.

BACKGROUND AND PURPOSE: The aim of this study was to examine non-motor symptoms in different Parkinson's disease (PD) motor subtypes and their associations with quality of life (QoL). METHODS: A total of 132 patients with early PD with comprehensive motor examinations and non-motor symptom assessments were included. Motor subtypes were classified based on Stebbins' method. Non-motor symptoms were assessed by the Non-Motor Symptom Scale (NMSS) and validated by more comprehensive instruments, including the Pittsburgh Sleep Quality Index (PSQI) and Fatigue Severity Scale (FSS). QoL was measured …

In vitro biomechanical comparison of multistrand cables with conventional cervical stabilization.

STUDY DESIGN: The biomechanical stability of six different methods of cervical spine stabilization, three using multistrand cables, were eva … made of stainless steel, titanium, or polyethylene, are reported to be stronger, more flexible, and fatigue resistant than are monofilament wire based on mechanical testing. However, no in vitro biomechanical studies have been performed testing a standard posterior cervical wiring technique using multistrand cables. METHODS: Thirty-six fresh frozen cervi …

Benefits of resistance exercise in lean women with fibromyalgia: involvement of IGF-1 and leptin.

BACKGROUND: Chronic pain and fatigue improves by exercise in fibromyalgia (FM) but underlying mechanisms are not known. Obesity is increased among FM patients and associates with higher levels of pain. Symptom improvement after aerobic exercise is affected by body mass index (BMI) in FM. Metabolic factors such as insulin-like growth factor 1 (IGF-1) and leptin may be involved. In this study, the aim was to evaluate the role of metabolic factors in lean, overweight and obese women during resistance exercise, in relation to symptom severity and muscle strength in women with FM. METHODS: Forty-t…

Attitudes towards massage modify effects of manual therapy in breast cancer survivors: a randomised clinical trial with crossover design.

Our aims were to investigate the immediate effect of myofascial release on heart rate variability and mood state, and the influence of attitude towards massage in breast cancer survivors with cancer-related fatigue. Twenty breast cancer survivors reporting moderate to high cancer-related fatigue participated in this crossover study. All patients presented to the laboratory at the same time of the day on two occasions separated by a 2-week interval. At each session, they received either a massage intervention or control intervention. Holter electrocardiogram recordings and Profile of Mood State…