Abstract:Modern volleyball requires complex physical capacities, particularly explosive power and match-specific endurance that are closely associated with the performance of anaerobic and aerobic energy systems. Increasing performance…
rmance demands indicate that training programs alone are insufficient to produce optimal athletic performance; therefore, sports nutrition strategies become a crucial component in supporting athletes’ physiological adaptation processes. The research problem addresses how sports nutrition contributes effectively to improving the power and endurance of volleyball athletes based on recent scientific evidence. This study aims to systematically analyze the contribution of sports nutrition to enhancing the physical capacity of volleyball athletes through a scientific literature review approach. The research method employs a Systematic Literature Review (SLR) using the PRISMA framework to examine articles indexed in Scopus and SINTA published between 2015 and 2024. The identification process yielded 312 articles, followed by a rigorous screening and eligibility assessment that resulted in 22 articles meeting the inclusion criteria, with 10 core studies analyzed in depth to obtain a synthesis of relevant scientific findings. The results indicate that carbohydrate periodization of 6-8 g/kg body weight per day contributes to an improvement in vertical jump performance by approximately 3-6%, while optimal protein intake of 1.6-2.2 g/kg body weight per day increases peak power by about 4-8%. Creatine monohydrate supplementation of 3-5 g per day has been shown to enhance explosive power by 5-12%, whereas beta-alanine supplementation improves anaerobic work capacity by 8-14%. Hydration strategies and carbohydrate regulation also contribute to an increase in VO₂max by 2-5% and reduce the fatigue index by 6-10%. The findings confirm that sports nutrition functions as an essential mediator between training stimuli and the neuromuscular as well as metabolic adaptation responses of athletes. The novelty of this study lies in its conceptual synthesis that positions nutritional periodization as an evidence-based integrative strategy for sustainably optimizing the power and endurance of volleyball athletes.
Abstract:Chronic Obstructive Pulmonary Disease (COPD) is a progressive chronic respiratory disease that has become a global health concern due to its high morbidity and mortality rates and its impact on patients’ quality of life.…
e. In acute exacerbation conditions, impaired oxygenation becomes a major problem that may be influenced by various factors, including hemoglobin levels as the primary component of oxygen transport in the blood. However, the relationship between hemoglobin levels and oxygen saturation in patients with acute exacerbation COPD remains inconsistent, particularly in populations exposed to high environmental risk factors. This study aimed to determine the relationship between hemoglobin levels and oxygen saturation in patients with acute exacerbation COPD hospitalized at RSUD dr. Suhatman MARS Dumai, Kota Dumai. This research employed an analytic observational design with a cross-sectional approach involving 73 patients selected through total sampling based on medical record data. Bivariate analysis using the Spearman correlation test showed no significant relationship between hemoglobin levels and oxygen saturation (r = 0.098; p = 0.412), indicating a very weak and statistically insignificant correlation. The study concluded that hemoglobin levels do not directly influence the oxygenation status of patients with acute exacerbation COPD, where impaired oxygenation is more strongly affected by respiratory factors such as ventilation-perfusion imbalance and structural lung damage. The novelty of this study lies in its empirical evidence demonstrating the limited role of hemoglobin as a predictor of oxygenation in patients with acute exacerbation COPD within a population with specific environmental characteristics, thereby providing a basis for developing more comprehensive clinical approaches in monitoring and managing COPD patients.
Abstract:The decline in sleep quality among preschool children has become a significant concern due to its impact on physical health and cognitive development, one of which is influenced by excessive smartphone use. This study addresses…
dresses the research problem of whether there is a relationship between smartphone addiction and sleep quality in preschool children. The aim of this study is to analyze this relationship among children at PAUD Anggrek, Tamansari Village, Bondowoso Regency, in 2025. The research employed a quantitative approach with a cross-sectional design, involving the entire population of 30 parents as the sample using a total sampling technique. Data were collected through structured questionnaires and analyzed using the chi-square test at a 5% significance level. The results revealed a significance value of 0.000 < 0.05 and a calculated chi-square value of 22.502, which is greater than the chi-square table value of 3.481, indicating a significant relationship between smartphone addiction and sleep quality in preschool children. The findings conclude that higher levels of smartphone addiction are associated with poorer sleep quality in children. The novelty of this study lies in its focus on preschool children within early childhood education settings using a behavioral approach to technology use, which remains relatively underexplored in the local context. These findings provide important implications for parents and educators to regulate smartphone use in order to support optimal sleep quality in children.
Abstract:The development of digital technology over the past two decades has revolutionized human communication, social interaction, and the formation of both individual and collective identities in a global context. Digital media…
a no longer merely function as communication tools but have become socio-cultural spaces that actively shape values, norms, symbols, and everyday practices. This phenomenon raises research questions regarding how cultural transformation and identity construction are influenced by the dominance of digital technology, as well as how social media and platform algorithms shape cultural visibility and digital identities. This study employs a qualitative approach through a critical narrative literature review, synthesizing theories of network society, mediatization, cultural globalization, digital capitalism, and digital identity. The analysis focuses on four key issues: cultural digitalization, the role of social media in identity formation, the emergence of hybrid identities, and platform power in determining cultural representation. Findings indicate that digital technology has ambivalent effects: it expands spaces for cultural expression, enhances public participation, and provides opportunities for marginalized groups to represent their identities; however, global platform dominance drives cultural homogenization, identity commodification, and inequitable symbolic representation. The novelty of this study lies in integrating a critical perspective on the influence of algorithms and digital capitalism in identity formation, which has rarely been addressed comprehensively in digital cultural studies. These findings offer theoretical contributions to media and cultural research as well as practical implications for understanding identity representation in the global digital era.
Abstract:Stock prices represent the market’s consensus regarding the fair value of a business entity, formed through a rational assessment of both financial and non-financial information. Within the frameworks of signaling theory…
ry and market efficiency, financial ratios serve as fundamental indicators reflecting a company's ability to generate profit, manage assets, and maintain short-term liquidity stability. When the market faces systemic disruptions, such as the COVID-19 pandemic, and transitions toward post-pandemic normalization, investor sensitivity to internal indicators tends to increase due to heightened external uncertainty. Consequently, a deep understanding of the internal determinants of stock prices becomes increasingly critical for data-driven investment decision-making. This study aims to empirically examine the effect of the Current Ratio (CR), Return on Assets (ROA), and Total Asset Turnover (TATO) on stock prices, both partially and simultaneously, in companies listed on the Indonesia Stock Exchange (IDX) during the 2020-2024 period. A quantitative approach was employed, using a descriptive-verificative design and secondary data drawn from audited financial statements and annual closing stock prices. The sample consisted of 91 companies selected through purposive sampling, and the data were analyzed using multiple linear regression with SPSS version 27. The analysis results indicate that all three independent variables have a positive and significant impact on stock prices, both individually and collectively. This study contributes to the capital market literature by highlighting the relevance of financial ratios in explaining stock price fluctuations in the post-pandemic period, a topic that remains underexplored in the context of developing countries.
Abstract:A culturally responsive approach to teaching has become an essential element in building an inclusive, relevant, and transformative educational ecosystem, particularly in the context of Indonesian language instruction at…
the primary school level. This study aims to analyze the implementation of the Culturally Responsive Teaching (CRT) approach in Indonesian language learning among second-grade students at SDN Sumobito 1 Jombang. Employing a descriptive qualitative method, data were collected through participatory observation, semi-structured interviews, and documentation. The data were thematically analyzed to identify patterns of CRT application in daily teaching practices. The findings indicate that student engagement in the learning process is relatively active; however, the integration of CRT principles remains suboptimal. This is evidenced by the limited use of teaching materials that reflect students' cultural backgrounds and the low level of teachers’ conceptual understanding of the CRT approach. The study underscores the importance of enhancing educators’ professional capacity through continuous training focused on pedagogies that are sensitive to local cultural contexts. In addition, the development of culturally responsive teaching materials needs to be accommodated within the curriculum to make learning more contextual and meaningful. The implications of these findings suggest that a systematic implementation of CRT has the potential to improve the quality of Indonesian language education by positioning cultural diversity as a pedagogical asset rather than a barrier. Consequently, the results of this study are expected to serve as a reference for the formulation of more inclusive, adaptive, and culturally equitable basic education policies in multicultural societies.
Abstract:Electricity has become an essential need in daily life and is a primary resource that supports various economic activities. Along with the growth of the population, technological advancements, and increased investments,…
the demand for electricity supply is projected to continue rising. In Indonesia, PLN (Perusahaan Listrik Negara) is the main electricity provider, but it often faces challenges in meeting this demand, especially with frequent power outages that disrupt industrial and societal activities. To address this issue, many companies have turned to using generator sets (gensets) as an alternative solution to ensure a stable energy supply. Although the use of gensets provides energy independence, it requires a significant investment. Therefore, an in-depth analysis of the efficiency and economic feasibility of using gensets is necessary. This study aims to analyze the use of gensets at PT. Teladan Prima Agro Bukit Permata Mill, located in Kaubun, East Kutai, focusing on technical-economic aspects such as Present Value (PV), Future Value (FV), Net Present Value (NPV), Internal Rate of Return (IRR), and Break Even Point (BEP). Data collected directly from the field includes genset specifications, electricity load, energy consumption, fuel usage, and genset operations. The analysis results indicate that the 455 KVA genset is capable of meeting the factory's electricity needs with an initial cost of IDR 649,649,996. The NPV calculation shows a value of IDR 880,380,813, with an IRR of 6.63%. The BEP is achieved in the 12th month with a profit of IDR 109,645,114. Based on these results, the operation of the genset at PT. Teladan Prima Agro Bukit Permata Mill is considered feasible and profitable in the long term.
Abstract:The ideology of religious radicalism poses a serious threat that can disrupt social peace, particularly for the younger generation who are more vulnerable to being exposed to radical ideas. Religious radicalization, as a…
form of extremism, has the potential to disturb interfaith harmony and create social tensions. Therefore, preventing the spread of this ideology is crucial, one of which can be achieved through the involvement of Christian youth in utilizing social media. Social media has become a highly effective platform for spreading various types of information, both positive and harmful. As such, Christian youth play a very important role in addressing this threat. This research aims to examine the contribution of Christian youth in preventing the spread of religious radicalism ideology through social media. The approach used is qualitative with a literature study, where data is obtained from various relevant scholarly sources. The results of the study show that Christian youth can use social media as a tool to spread messages of peace, tolerance, and inclusivity. This is important in fostering harmony amidst religious diversity in Indonesia. Christian youth can play an active role by correcting the misconceptions often propagated by radical groups. By spreading positive and constructive messages, Christian youth can help society become more discerning in filtering information, thus reducing the potential spread of hatred. Through their involvement on social media, Christian youth have significant potential in strengthening interfaith harmony and creating a more peaceful and harmonious social environment.
Abstract:Anxiety disorders in teenagers are a serious issue that can impact various aspects of their lives, such as social interactions, academic achievement, and emotional well-being. To address these challenges, group counseling…
g has proven to be an effective approach. In group counseling, teenagers can share their experiences with others facing similar issues, creating a supportive and understanding environment. Techniques like open discussions help them identify the causes of their anxiety more effectively, while role-playing allows them to practice new ways of dealing with anxiety-inducing situations. Relaxation exercises also assist them in developing skills to manage anxiety effectively in their daily lives. Literature studies indicate that group counseling not only reduces anxiety levels in teenagers but also enhances their social skills, self-confidence, and emotional resilience. With support from family, schools, and the community, group counseling can become a sustainable strategy in promoting teenagers' mental well-being. Therefore, it is important to consider that there is no one-size-fits-all approach for all teenagers. However, group counseling provides a safe and structured platform for teenagers to learn from each other, strengthen their coping skills, and make progress in overcoming their anxiety. With this approach, it is hoped that teenagers can build a strong foundation for their ongoing mental health.
Abstract:The capital market has become a cornerstone of modern economies, facilitating the flow of funds between investors and business entities to support growth and innovation. However, interest in investing in the Indonesian capital…
apital market still faces significant challenges, particularly in terms of risk understanding, perception, and individual motivation for investment. This research aims to explore the factors influencing individual investment interest in PT. Indonex Bangun Investama, a key player in the Indonesian capital market. The research adopts a quantitative approach involving 82 active investors of PT. Indonex Bangun Investama. Data analysis utilizes various statistical techniques such as normality tests, multicollinearity tests, and multiple linear regression analysis to examine the impact of risk, motivation, and investment knowledge variables on investment interest. The analysis results indicate that risk and motivation significantly affect investment interest, while investment knowledge, although important, does not significantly influence investment interest individually. These findings provide deeper insights into the psychological and economic factors underlying individual investment decisions in the Indonesian capital market. The implications of this research suggest the need for a more holistic and strategic educational approach to enhance financial literacy and effective risk mitigation in individual investment strategies. Thus, this research makes a significant contribution to the development of education strategies and risk management in the Indonesian capital market context, laying a foundation for further discussions on expanding accessibility and participation in investment among the public.