Iskanje po repozitoriju

Opis: Introduction: This study investigated whether velocity-based resistance training provides additional benefits to lower limb performance compared to standard exercise execution. Methods: Twenty untrained adult women (37–55 years) were randomly assigned to two resistance training groups to perform resistance training with three sets of four lower body exercises per week for 6 weeks. The number of repetitions and lifting velocity differed between the groups. One group performed lower body exercises with maximal intent and a 10% velocity loss threshold termination (VB10%; n = 10), while the other group performed 10 repetitions at a standard 1:2 s concentric:eccentric tempo (STD; n = 10). The number of repetitions was recorded during the sessions. Before and after the intervention, power, muscular endurance and dynamic stability of the lower limbs were assessed using the mean propulsive velocity (MPV) and power (MPP) at 70% one-repetition maximum in the squat and deadlift, the Y-balance test (YBT) and the 30-second sit-to-stand test (STS), respectively. A two-way analysis of variance was used to assess the effects of time, group, and their interaction. Results: The difference between 10 repetitions in the STD and repetitions in the VB10% was assessed using a one-sample t-test. Both groups significantly improved MPP, MPV, YBT and STS [mean difference (MD) ≥5.4%; effect size (ES) ≥0.6]. Although 2.5–2.7 less repetitions were performed in VB10%, the improvements in MPP and MPV were slightly greater (ES ≥ 1.2 vs. ≥ 0.8). Conversely, STS and YBT improved more in STD (ES ≥ 0.4 vs. ≥ 1.0). Discussion: Regardless of the lifting method used, the training intervention improved lower limb power, muscular endurance and dynamic stability, indicating that resistance training is an effective strategy for enhancing these capacities in untrained adult women. Using 10% threshold may be a more time-efficient strategy for improving lower-limb power in this population and could represent a promising approach for mitigating early declines in power over time.
Ključne besede: adult women, dynapenia, muscle performance, power, powerpenia, resistance training, strength, velocity loss
Objavljeno v RUP: 14.01.2026; Ogledov: 126; Prenosov: 1
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Opis: Lignocellulose is an ideal precursor for supercapacitor electrodes due to its diverse structures and abundant availability. For supercapacitors, particularly electric double-layer capacitors (EDLCs), pore structure is critical. This review summarizes advances in lignocellulose-derived hierarchical porous carbon (LHPC) for supercapacitors, focusing on pore structure and future research directions. We discuss how pore structure influences supercapacitor performance, the activation methods for creating pores in LHPC, and review studies on optimizing pore structure for high-performance supercapacitors. Hierarchical porous carbon should feature a sufficient micropore surface area along with suitable mesoporous and macroporous surfaces to enhance rate performance while maintaining capacitance. This review is expected to actively advance the selection of lignocellulosic precursors and the development of optimized pore structure models, with the ultimate goal of enabling efficient production of lignocellulose-derived hierarchical porous carbon electrodes with superior properties.
Ključne besede: lignocellulose, performance, carbon
Objavljeno v RUP: 29.12.2025; Ogledov: 166; Prenosov: 2
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Opis: In an era of growing environmental challenges, the role of banks in promoting sustainability is critical. This study examines how Corporate Social Responsibility (CSR), green finance, and green innovation influence the environmental performance of Indian banks. Guided by legitimacy theory and the natural resource-based view, survey data from 379 bank employees were analysed using structural equation modelling. The results reveal that robust CSR initiatives, effective green finance practices, and innovative green strategies significantly enhance banks’ environmental performance. These findings contribute to theoretical understanding and offer practical insights for improving sustainability in the banking sector. The study recommends that banks in emerging economies strengthen internal resources by investing in CSR, adopting green finance, and fostering green innovation to boost environmental performance. Such efforts align with global sustainability goals, positioning banks as key players in environmentalprotection and responsible finance.
Ključne besede: corporate social responsibility, green finance, green innovation, environmental performance of banks, structural equation modelling
Objavljeno v RUP: 18.12.2025; Ogledov: 179; Prenosov: 0
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Opis: This paper examines the effect of disaggregated international trade on the economic growth of Nigeria. The data and specified model were analysed with Autoregressive Distributed Lag and Toda-Yamamoto techniques. It was found that both non-oil and oil exports enhance economic growth. However, non-oil and oil imports impede economic growth. Furthermore, overall causality results revealed that while non-oil and oil exports and non-oil imports had bi-directional causality with economic growth, nonoil imports did not have causality with economic growth. Consequently, the government should prioritise export-led policy to facilitate economic performance in Nigeria. Findings emphasised the need for the diversification of the economy for higher economic growth and sustainability inthe long run. The paper enriches the literature on the relationship between international trade and economic growth in Nigeria by adequately disaggregating trade components to reflect the economic structure of the Nigerian economy. Also, it brings new empirical findings on the trade-growth relationship in an oil-dependent developing country. This study can provide a theoretical framework for research in countries that oil dependent.
Ključne besede: international trade, economic performance, trade policy, developing economies, ARDL, Toda-Yamamoto
Objavljeno v RUP: 18.12.2025; Ogledov: 109; Prenosov: 0
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Opis: This study investigated how the acceleration-speed profile (ASP) of the weaker and stronger side changes at different radii. Twenty male youth soccer players completed 30 m linear and curvilinear sprints (12.15, 11.15, 9.15, 7.15, and 6.15 m radius) in three training sessions. Sprint speed and acceleration over time and distance were recorded using a GNSS device. The maximum theoretical speed (S0), the acceleration (A0), slope of the ASP (ASslope), the area under the ASslope (ASParea), the acceleration at a sprint speed of 3 m/s (A3), and the curvilinear sprint deficit (ASPdeficit) of the individual sprints were analyzed. The effects of side, radius, and their interaction were evaluated with 2 × 5 ANOVA and the post hoc tests. A significant effect of radius and side was observed for all variables (F ≥ 3.50, p ≤ 0.037, η2 ≥ 0.15). The ASParea and S0 decreased at tighter radii. The A3 and A0 remained relatively unchanged, resulting in a steeper ASslope, and a larger ASPdeficit. At the same radius, the weaker side CS had a smaller ASParea, S0, A3, and a larger ASPdeficit. The ASP of the curvilinear sprint in youth soccer players is side-dependent at both ends (acceleration and top speed), while radii mainly affect late acceleration and top speed performance. These observations should be considered when adapting soccer players’ sprint training and monitoring external load based on acceleration.
Ključne besede: curvilinear sprint, acceleration-speed profile, sprint performance, soccer
Objavljeno v RUP: 08.09.2025; Ogledov: 482; Prenosov: 7
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