Background: Fatigue is emerging as a major public health problem that is highly associated with poor health-related quality of life and disability. Among adults, fatigue has become increasingly common because of workload or lifestyle changes. This study aimed to cross-culturally adapt the Chalder Fatigue Scale (CFS) into Turkish, to investigate its psychometric properties, and to establish normative data in healthy adults by age and gender. Methods: The validity of the CFS was tested with a total sample of 476 healthy adults aged 20–40 years (264 males and 212 females) and test–retest/measurement error analyses were performed with 161 participants (94 males and 67 females). The test–retest reliability was examined using the intraclass correlation coefficient (ICC), and internal consistency was determined using Cronbach's α-coefficient. Predictive validity was assessed using the Receiver Operating Characteristic to validate the cut-off value of the CFS for non-fatigued and fatigued participants. Factor analyses and hypothesis testing were conducted to assess construct validity. Hypothesis testing examined convergent and known-group validity by testing 14 predefined hypotheses. Results: The mean (SD) and median (25–75%) CFS scores were 10.7 (4.9) and 11 (7–14) for the total sample (n = 476). The cut-off point for CFS was set at ≥ 12 with a sensitivity of 65.8% and a specificity of 85.9%. The CFS provided evidence of excellent fit of the two-factor structure (CFI = 0.963, RMSEA = 0.06, SRMR = 0.02). There was evidence of strong internal consistency demonstrated by Cronbach's α = 0.863 and good test–retest reliability by ICC = 0.76. Thirteen out of 14 hypotheses (92.9%) were confirmed and the scale showed low to moderate correlation with other measurement instruments (r = 0.31–0.51). Conclusions: The CFS has been shown to be a reliable and valid instrument that can be used in various populations for the assessment of fatigue. Level of evidence: Level II.

Background and Objectives: Chronic ankle instability (CAI), a prevalent injury among female volleyball players, can negatively affect functional performance and increase the risk of further injury. The aim of this study was to compare functional movement quality, dynamic balance, vertical jumping performance, hip muscle strength, and risk of injury between adolescent female volleyball players with unilateral CAI and those without CAI. Materials and Methods: This cross-sectional study included 46 adolescent female volleyball players, divided into CAI (n = 23) and control (n = 23) groups based on predefined criteria. Functional movement quality was assessed using the Functional Movement Screen (FMS), and dynamic balance was evaluated with the Y-Balance Test (YBT). Maximal isometric strength of the hip muscles (flexors, extensors, abductors, adductors, and internal and external rotators) was measured using hand-held dynamometry, and vertical jumping performance was assessed using countermovement jump tests. Injury risk was classified based on established cut-off values for the FMS-composite and YBT-anterior reach asymmetry scores. Results: The CAI group demonstrated significantly lower FMS-composite scores (p = 0.007), reduced anterior reach on the YBT (p = 0.004), and decreased strength in the hip flexors (p = 0.007) and hip adductors (p = 0.044), supported by moderate effect sizes. No significant group differences were observed in the other YBT directions, vertical jump tests, or the other hip muscles (p > 0.05). A greater proportion of athletes in the CAI group were classified as high risk for injury based on both FMS-composite (p = 0.022) and YBT-anterior reach asymmetry (p = 0.001) cut-off values, supported by moderate and relatively strong effect sizes, respectively. Conclusions: Adolescent female volleyball players with unilateral CAI showed impaired movement quality, balance deficits, hip muscle weakness, and increased injury risk. These results highlight the importance of targeted interventions and broader investigations into CAI in adolescent athletes.

Amaç: Sağlıklı genç yetişkin kadınlarda adet düzensizlikleri ile fiziksel aktivite seviyesi, uyku düzeni, yorgunluk, depresyon ve yaşam kalitesi arasındaki ilişkiyi incelemektir. Gereç ve Yöntem: Çalışmaya 20-40 yaşlarında olan 202 genç yetişkin kadın katılmıştır. Bireylerin demografik ve sosyoekonomik bilgileri kaydedilmiştir. Ayrıca yorgunluk Chalder Yorgunluk ölçeği, uyku kalitesi Pittsburg Uyku Kalitesi İndeksi, fiziksel aktivite seviyesi Godin Boş Zaman Fiziksel Aktivite ölçeği, duygu durumu Beck Depresyon Ölçeği ve yaşam kalitesi Nottingham Sağlık Profili ile incelenmiştir. Adet düzensizliği olan kadınlar belirlenip aynı yaşta olan diğer kadınlarla sonuçları karşılaştırılmıştır. Bulgular: Adet düzensizliği olan kadınlarda fiziksel yorgunluğun ve depresif bulguların arttığı, uyku kalitesinin, ortalama uyku süresinin ve yaşam kalitesinin azaldığı belirlendi. Sonuç: Çalışmamızla adet düzensizliğinin bazı fiziksel ve ruhsal etkilerinin olduğunu görülmüştür. Herhangi bir sağlık problemi ile ilişkili olmaması durumunda göz ardı edilmesi muhtemel olan adet düzensizliğinin günlük yaşama olan etkilerinin araştırılması ve temelinde yatan nedenlerin bulunarak çözüm üretilmesine, kendini gerçekleştirme, yeterli iş gücüne sahip olma, ailesel, sosyal ve toplumsal görevlerini yerine getirme gibi kadının toplum içinde yer edinmesini sağlayacak etmenlerin iyileştirilmesine yardımcı olabilir.

Physical activity (PA) and exercise are widely recommended as part of routine antenatal care by guidelines and are considered safe for uncomplicated pregnancies (Hayman et al. 2023). These recommen...

Background/aim: The link between atrial fibrillation (AF) and lean body mass is unclear. This study presents the effects of AF on sarcopenia indices, including ultrasonographic muscle architecture. Materials and methods: In this study conducted in neurology units, 72 subjects with AF (mean age: 71 ± 11years, 49% female) were compared with 538 without AF (mean age:66±12years; 53% female) in terms of sarcopenia indices [anthropometry; Short Physical Performance Battery (SPPB); hand grip strength (HGS); bioimpedance analysis (BIA) indices; skeletal muscle mass index (SMMI) normalized to weight, height and body mass index (BMI); and phase angle (PhA)]; muscle ultrasonography [thickness, cross-section area (CSA), fiber length (fL) and pennation angle (PeA) of rectus femoris (RF), biceps brachii (BB), vastus lateralis (VL), vastus intermedius (VIM) and gastrocnemius medialis (GCM)]; possible causes of sarcopenia such as malnutrition; and consequences of sarcopenia [fall, fatigue, SarQol] along with sarcopenia screening (SARC-F). Possible associations were tested in multiple exploratory linear models, and partial r(pr) and p were reported. Results: Participants with AF exhibited significantly higher SARC-F and SarQol scores. In multivariable models adjusted for age, sex, height, and body weight, AF was independently linked to lower mean and maximum HGS (pr = –0.137, p = 0.014; pr = –0.130, p = 0.02), reduced PhA (pr = –0.193, p < 0.001), decreased RF thickness (pr = –0.120; p = 0.004), and diminished RF+VIM thickness (pr = –0.098; p = 0.019). Additional muscle ultrasound parameters, including BB-CSA, RF-CSA, BB-brachialis thickness, VL fL, and PeA and BIA indices, including SMMI(height), SMMI(weight), and SMMI(BMI), tended to be lower in AF. Conclusion: AF is linked to impaired muscle health and reduced quality of life. Management should include thigh muscle ultrasound and strategies to prevent malnutrition.