1. Intensive exploration : the application potential of flax fibre/textiles as reinforcement in cementitious compositesWenzhuo Ma, Libo Yan, Bohumil Kasal, 2025, pregledni znanstveni članek Opis: This review offers an intensive exploration of the compatibility between flax fibre and cementitious materials, including the kinetics of alkaline degradation of flax fibre, and the interaction between fibre leaching/degradation and cement hydration. This paper also focuses on in-depth insights into the formation and ageing mechanisms of the interfacial transition zone between flax fibre and the cementitious matrix, and in turn how the ageing mechanisms affect the mechanical properties and long-term durability of flax fibre/textile reinforced cementitious composites. A systematic literature review reveals that flax fibre offers superior alkaline resistance compared to other lignocellulosic fibres due to its high crystalline cellulose and low lignin content. While the rough surface of flax fibre enhances bonding with the cementitious matrix, its hydrophilic nature can increase porosity at the interfacial transition zone and promote fibre mineralisation due to fibre swelling and shrinkage. Flax fibre reinforced cementitious composites show comparable flexural and compressive properties to those reinforced with other fibres, while flax textile excels in improving ductility over other textiles and steel reinforcements. Additionally, flax fibre degrades at higher temperatures than sisal and jute fibres. Despite growing interest in flax fibre/textile reinforcement for cementitious composites, key gaps remain in understanding the kinetic mineralisation process of flax fibre, the effects of the alkaline environment and hydration heat on its degradation, and the impact of its alkaline degradation products on cement hydration. Further research is needed to develop direct pull-out testing methods, explore the thermal/fire behaviour of composite phases encompassing the polymeric coating, and create a sustainability framework that considers ecological impacts, recyclability, and waste management for natural fibre reinforced cementitious composites.
Ključne besede: interfacial transition zone, mechanical properties, aging mechanisms
Objavljeno v RUP: 23.12.2025; Ogledov: 194; Prenosov: 2
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2. Linking older adults’ psychosocial well-being with objective and perceived environments in SloveniaMateja Erce Paoli, Michael David Burnard, 2025, izvirni znanstveni članek Opis: Background: Europe’s aging population faces resource loss, loneliness, and social isolation, making psychosocial well-being a priority. A well-designed environment can help compensate for lost resources, while poor design may harm health, highlighting environmental quality as key to successful aging. Aim: The aim of our study was to evaluate the link between psychosocial well-being, and the built environment. Method: Participants from three retirement homes in Slovenia filled in the World Health Organization Wellbeing Index, the Brief Sense of Community, the Lubben Social Network Scale, the University of California Los Angeles Loneliness Scale, and the short version of the Social Production Function Instrument with the assistance of a researcher. Additionally, the built environ- ment was objectively assessed using the EVOLVE tool and subjectively assessed by participants using a custom scale. Structural equation modeling was used to examine paths between the environ- ment and wellbeing. Results: The findings showed a statistically significant indirect effect of well-being on the perceived environment, while no indirect effects were found between the objective and per- ceived environment or well-being. However, specific objectively measured environmental factors, such as acceptability, features for sensory and dementia support, and perceived accessibility and aesthetic environmental attributes significantly affect well-being. Conclusion: These findings highlight the need to prioritize well-being in urban planning for aging populations. Beyond basic needs like safety, high- level needs like aesthetics, sensory support, and accessibility should be emphasized. Enhancing well- being through these factors may be effective when designing or modifying physical environments. Accessible, sensory-friendly, and dementia-supportive designs can further support healthy aging.
Ključne besede: needs, retirement homes, successful aging, environmental quality, structural equation modelling
Objavljeno v RUP: 22.07.2025; Ogledov: 669; Prenosov: 8
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3. Dual-task gait analysis : combined cognitive–motor demands most severely impact walking patterns and joint kinematicsNenad Nedović, Slavica Mutavdžin Krneta, Stevan Jovanović, Danilo Vujičić, Žiga Kozinc, Dmitry Skvortsov, 2025, izvirni znanstveni članek Opis: Cognitive tasks significantly influence automated acts, such as walking. This study included 41 healthy individuals, who were over 65 years of age. We examined dual-task effects on the spatiotemporal and kinematic parameters of gait in older adults during four tasks carried out in single-task, cognitive, motor, and combined cognitive–motor conditions. An analysis of walking according to spatiotemporal and kinematic parameters was performed using an inertial movement analysis system. The combined task showed the most significant impairments, with substantially reduced gait speed (p < 0.001, r = −0.80), shorter stride length (p < 0.001, r = −0.82), and decreased hip flexion (p < 0.001, r = −0.80) compared to single-task walking. Cognitive tasks alone significantly affected gait speed (p = 0.001) and stride length (p = 0.001), while motor tasks showed minimal effects. The combined task also significantly increased double-support time (p < 0.001) and reduced single-support time (p = 0.001), indicating compensatory walking strategies. These findings demonstrate that concurrent cognitive–motor demands disproportionately impair gait, suggesting that clinical assessments should prioritize combined-task evaluation. The observed kinematic and spatiotemporal changes highlight the profound interdependence between cognitive function and automatic locomotor control during walking. It is likely that dual-task gait analysis may offer clinical utility for the early detection of cognitive–motor deficits.
Ključne besede: spatiotemporal parameters, gait deterioration, aging population
Objavljeno v RUP: 30.06.2025; Ogledov: 693; Prenosov: 3
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5. Age-related differences in plasma BDNF levels after prolonged bed restCecilia Soavi, Uroš Marušič, Juana Maria Sanz, Mario Luca Morieri, Edoardo Dalla Nora, Boštjan Šimunič, Rado Pišot, Giovanni Zuliani, Angelina Passaro, 2016, izvirni znanstveni članek Ključne besede: brain derived neurotrophic factor, BDNF, bed rest, acute stress, aging brain
Objavljeno v RUP: 08.08.2016; Ogledov: 5100; Prenosov: 236
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6. Effect of computerized cognitive training with virtual spatial navigation task during bed rest immobilization and recovery on vascular function : a pilot studyNandu Goswami, Voyko Kavcic, Uroš Marušič, Boštjan Šimunič, Andreas Roessler, Helmut Hinghofer-Szalkay, Rado Pišot, 2015, izvirni znanstveni članek Ključne besede: computerized cognitive training, spatial navigation, bed rest, EndoPAT, vascular changes, aging
Objavljeno v RUP: 15.10.2015; Ogledov: 5696; Prenosov: 91
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7. Reinnervation of Vastus lateralis is increased significantly in seniors (70-years old) with a lifelong history of high-level exerciseSimone Mosole, Katia Rossini, Helmut Kern, Stefan Loefler, Hannah Fruhmann, Michael Vogelauer, Samantha Burggraf, Martina Grim-Stieger, Jan Cvecka, Dušan Hamar, Milan Sedliak, Nejc Šarabon, 2013, izvirni znanstveni članek Ključne besede: aging, human skelet muscle, lifelong physical exercise, senior sportsmen, denervation and reinnervation, fiber-type grouping, training
Objavljeno v RUP: 15.10.2015; Ogledov: 5677; Prenosov: 304
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9. FES training in agingHelmut Kern, Stefan Loefler, Christian Hofer, Michael Vogelauer, Samantha Burggraf, Martina Grim-Stieger, Jan Cvecka, Dušan Hamar, Nejc Šarabon, Feliciano Protasi, Antonio Musarň, Marco Sandri, Katia Rossini, Ugo Carraro, Sandra Zampieri, 2012, izvirni znanstveni članek Ključne besede: FES, exercise training, aging, functional analyses, mobility, muscle fiber size
Objavljeno v RUP: 15.10.2013; Ogledov: 7268; Prenosov: 101
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10. Strength training in elderly people improves static balanceNejc Šarabon, Stefan Loefler, Jan Cvecka, Milan Sedliak, Helmut Kern, 2013, izvirni znanstveni članek Opis: Aim of this study was to investigate the effects of two different types of strength training programs on static balance in elderly subjects. Subjects older than 65 years of age were enrolled and assigned to control group (CG, n =19), electrical stimulation group (ES, n = 27) or leg press group (LP, n = 28). Subjects in both the training groups were exposed to training (2-3x/week) for a period of 9 weeks. In the ES group the subjects received neuromuscular electrical stimulation of the anterior thigh muscles. In the LP group the subjects performed strength training on a computer-controlled leg press machine. Before and after the training period, static balance of the subject was tested using a quiet stance task. Average velocity, amplitude and frequency of the center-of-pressure (CoP) were calculated from the acquired force plate signal. The data was statistically tested with analysis of (co)variance and t-tests. The three groups of subjects showed statistically significant differences (p < 0.05) regarding the pre-training vs. post-training changes in CoP velocity, amplitude and frequency. The differences were more pronounced for CoP velocity and amplitude, while they were less evident in case of mean frequency. The mean improvements were higher in the LP group than in the ES group. Our results provide supportive evidence to the existence of the strength-balance relationship. Additionally, results indicate the role of recruiting central processes and activation of functional kinetic chains for the better end effect
Ključne besede: balance, aging, falls, strength, training
Objavljeno v RUP: 15.10.2013; Ogledov: 5443; Prenosov: 280
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