Search Results (524)

Urban vitality is a key indicator for characterizing the quality of urban space and the operational status of urban functions. However, existing studies still have limitations in multidimensional vitality measurement at the block scale, the representation of hierarchical differences in cultural facilities, and the coupling coordination diagnosis of multidimensional vitality. This study takes 2504 blocks in the central urban area of Nanjing as the basic analytical units and integrates multi-source geospatial data, including VIIRS nighttime light data, Baidu Huiyan population heat data, POIs, road networks, and water systems, to construct a three-dimensional urban vitality evaluation system encompassing economic, social, and cultural vitality. A Composite Nighttime Light Index (CNLI) is constructed by geometrically fusing VIIRS nighttime light data with the kernel density of industry- and consumption-related POIs to reduce the impact of the spatial generalization of nighttime lights on block-scale economic vitality measurement. Meanwhile, population heat data and cultural POIs are used to characterize social vitality and cultural resource supply, respectively, and PCA, a coupling coordination model, and spatial autocorrelation analysis are combined to identify the spatial structure of multidimensional vitality and the dominant factors of disorder. External reference variables are also introduced to conduct convergent validity verification. The results indicate that the comprehensive vitality of Nanjing’s central urban area exhibits a distinct “core agglomeration–multi-node diffusion” structure. High-vitality zones are primarily concentrated in Xinjiekou, Confucius Temple, Hunan Road–Zhongyang Road, Longjiang, and the Nanjing Olympic Sports Center, with localized vitality patches forming at peripheral commercial and transportation nodes. Both comprehensive vitality and coupling coordination degree exhibit significant positive spatial autocorrelation, with Moran’s I values of 0.8089 and 0.8372, respectively. The disorder types show distinct quantitative differences and spatial differentiation. Among these, blocks with lagging cultural vitality are the most numerous; peripheral new towns and newly developed residential areas are more prone to cultural vitality lag; areas surrounding scenic spots, universities, and large ecological spaces tend to exhibit economic vitality lag; and less developed peripheral blocks primarily exhibit comprehensive disorder. Based on accessible multi-source geospatial data, this study constructs a block-scale framework for measuring multidimensional urban vitality and diagnosing coordination status. This framework can provide a reference for vitality identification, functional shortcoming diagnosis, and refined spatial governance in Nanjing’s central urban area, and offer a case reference for historic and cultural cities with similar spatial structures. Full article

This study was developed within the framework of the GOLL (Green Olympic Living Lab and Environment Change) project, promoted by the Municipality of Coimbra, Portugal. The project uses the Mário Mexia Multisport Pavilion (MMMP) and the Olympic Swimming Pools Complex (OSPC) as living lab case studies for sustainability-oriented sports infrastructure management. The study combines a review of best practices in sustainable sports facilities with an applied case study focusing on infrastructure characterisation and the identification of intervention requirements (InRs). The review addresses the environmental, economic, and social dimensions of sustainable sports facilities, including energy and water efficiency, digital technologies, renewable energy integration, waste management, mobility, certification systems, and user inclusion. The adopted methodology integrates a literature review, technical inspections, and the analysis of building systems and resource consumption. The findings highlight the significant potential for improving operational performance, resource efficiency, and overall sustainability by adopting more integrated maintenance and management approaches. However, practical implementation remains dependent on overcoming challenges related to costs, data integration, and stakeholder engagement. The paper also discusses the potential adoption of integrated maintenance approaches, including the potential adoption of tailored digital management solutions and certification schemes, which may support more structured and proactive management. Within the GOLL living lab environment, this contributes to more informed technical, operational, and policy decision-making for the sustainable rehabilitation and management of sports facilities. Full article

To investigate the influence of decision-making styles on college students’ sports and health consumption preferences and the underlying cognitive neural mechanisms, this study recruited 39 college students as participants, adopted a one-factor within-subjects design, and combined behavioral experiments with functional near-infrared spectroscopy (fNIRS). It examined consumption preferences and brain activation characteristics in maximizers and satisficers under three conditions: no promotion, discount promotion, and public welfare promotion. In behavioral terms, college students demonstrated the highest inclination towards public welfare promotions, with discounts being the second most favored, while the no-promotion condition received the lowest preference. Maximizers preferred discount promotion, while satisficers prioritized public welfare promotion. In neural terms, public welfare promotion widely activated the left dorsolateral prefrontal cortex, whereas discount promotion only activated a local region of this cortex. Maximizers showed the strongest activation in the corresponding region under discount promotion, and satisficers exhibited more significant activation in the corresponding region under public welfare promotion. Decision-making styles shaped consumption preferences through depth of information processing and brain activation patterns: maximizers focused on rational calculation and benefit maximization, while satisficers relied on intuitive experience and value perception. These findings provide behavioral and neuroscientific evidence for precision marketing in the sport and health consumption market and the implementation of the national fitness program. Full article

As livestreaming e-commerce rapidly expands, impulsive buying has become increasingly prominent in online consumption. However, although prior studies have examined impulsive buying in general e-commerce contexts, little attention has been paid to impulsive buying in sports livestreaming e-commerce. Drawing on the stimulus-organism-response framework and Dual-System Theory, this study examined the associations among consumer herding tendency, perceived scarcity, hedonic benefits of sales promotion tools, pleasure emotion, trust in seller, and impulsive buying. A cross-sectional self-report survey was conducted with 775 university students in eastern China with prior purchase experience in sports livestreaming e-commerce, and the model was analyzed using partial least squares structural equation modeling. The results showed that consumer herding tendency, perceived scarcity, and hedonic benefits of sales promotion tools were positively associated with pleasure emotion and trust in seller. Perceived scarcity showed the strongest path coefficient with trust in seller. Trust in seller and pleasure emotion were positively associated with impulsive buying, whereas self-control was negatively associated with impulsive buying. Specific indirect associations through trust in seller were generally stronger than those through pleasure emotion. The moderating effect of self-control was not significant, and the gender-based multi-group analysis revealed no significant differences between male and female consumers. Given the cross-sectional self-report design, these findings should be interpreted as associations rather than causal effects. Full article

Background: Obesity among Saudi adolescents has risen sharply, yet whether school athletic participation is associated with students showing improved dietary habits and better anthropometric profiles compared to those of their non-athlete peers remains unclear. This study compared anthropometric indices and dietary habits between school athletes and non-athletes in Riyadh. Methods: A cross-sectional study was conducted with 124 male secondary school students (70 athletes and 54 non-athletes aged 16–17 years) in Riyadh, Saudi Arabia. Athletes were defined as students who reported engaging in vigorous-intensity sport for ≥3 days/week for ≥60 min/session. BMI, body weight, and waist circumference were measured objectively. Dietary habit frequencies across ten food categories were assessed using the validated Arab Teens Lifestyle Study (ATLS) questionnaire. Independent samples t-tests and chi-square tests were used; effect sizes were calculated as Cohen’s d. A Bonferroni-corrected threshold (p < 0.005) was applied for multiple dietary comparisons. Results: Athletes had significantly lower BMI (23.64 ± 5.39 vs. 30.28 ± 7.25 kg/m²; p < 0.001, d = 1.06), body weight (p < 0.001, d = 0.93), and waist circumference (85.46 ± 12.61 vs. 95.50 ± 17.89 cm; p < 0.001, d = 0.66). Obesity prevalence was 15.7% among athletes versus 51.9% among non-athletes. Of ten dietary variables, only fresh fruit consumption showed a between-group difference (62.9% vs. 40.7% high-frequency; p = 0.010), which did not survive Bonferroni correction. Conclusions: School athletes demonstrated substantially better anthropometric profiles than their non-athlete peers, but dietary habit frequencies were largely similar across both groups. The high obesity prevalence among non-athletes underscores the need for school-based programs that combine structured physical activity with targeted nutrition education. Full article

Sports nutrition products are increasingly expected to deliver bioactive compounds that aid in recovery, reduce fatigue, and support physiological regulation, going beyond merely providing energy and nutrients. However, many bioactive compounds face challenges such as poor aqueous dispersibility, limited stability, low bioaccessibility, or inefficient absorption, which hinder their practical use in real food products. This review critically examines food-grade, gel-based delivery systems for bioactive compounds in sports nutrition from a design-driven perspective. It focuses on hydrogels, microgels, emulsion gels, protein gel matrices, and multicomponent gel architectures that prioritize structural stability, digestion-triggered responsiveness, and compatibility with food. Key design principles are discussed, including the need to maintain stability during processing and storage, balance protection with release, and tailor delivery structures to sports-specific constraints such as gastrointestinal tolerance, osmotic load, nutrient timing, and changes in digestion related to exercise. The review also analyzes the effectiveness of gel-based and hybrid systems in liquid, solid, and semi-solid sports nutrition products, emphasizing how the product format and consumption scenario can influence delivery performance. A design decision framework is proposed to align bioactive properties, food format, target release profile, and exercise-stage requirements with appropriate delivery architectures. Current challenges are also addressed, including difficulties in predicting structure–function relationships, limited robustness during scale-up processes, and inadequate functional evaluation. Overall, gel-based food delivery systems provide a promising solution for improving the stability, release behavior, and practical functionality of bioactives in sports nutrition. Full article

Objectives: This study aimed to systematically review the association between the consumption of energy drinks and sports drinks with oral health. Methods: A systematic search was conducted in three databases (PubMed, Web of Science and Embase) without any restrictions on publication year. Original studies (clinical trials, cohort, case-control studies and cross-sectional studies) reporting the association between energy drink or sports drink consumption and oral health or its impact on oral health were included. Results: The initial search found 1196 studies, and 10 studies with a total of 5805 participants (6–89 years old) met the inclusion criteria for analysis. Six studies investigated the association between energy drinks or sports drinks and dental erosion, whereas two studies reported dental caries outcomes and two studies reported saliva outcomes. Most (70%, 7/10) of the included studies were at high or serious risk of bias. Increased frequency or higher amounts of energy drink consumption were associated with a greater risk of dental erosion, whereas the relationship between sports drinks and dental erosion was inconsistent. Evidence regarding the association between dental caries experience and energy drink consumption was controversial, and no significant differences in caries experience were observed for sports drink consumption. Conclusions: There was limited and low-quality evidence suggesting that consumption of energy drinks may be potentially associated with dental erosion experience, whereas findings related to dental caries were inconclusive. The association between sports drinks and dental erosion was inconsistent and supported by limited evidence. More well-designed studies on energy or sports drinks and oral health are needed to clarify these relationships. Full article

This study examined differences in self-justification and symbolic consumption tendency according to levels of impulse-buying tendency among South Korean adult members of Generation Z sports consumers. Drawing on Cognitive Dissonance Theory (CDT) and Symbolic Self-Completion Theory (SSCT), the study aimed to clarify whether impulse-buying tendency functions as a meaningful basis for segmentation in sports product consumption. Data were collected from South Korean adults aged 20 years or older who had purchased sports products within the previous 12 months. For group-based comparison, participants were classified into low (n = 128) and high (n = 106) impulse-buying tendency groups using a mean-split procedure. A 29-item questionnaire assessed impulse-buying tendency (9 items), self-justification (4 items), and symbolic consumption tendency across five subdimensions (16 items). Confirmatory factor analysis supported the adequacy of the measurement model (χ²/df = 2.285, p < 0.001, IFI = 0.918, TLI = 0.906, CFI = 0.918, SRMR = 0.044, RMSEA = 0.074), with satisfactory reliability and convergent validity. MANOVA results showed that the high impulse-buying tendency group reported significantly higher levels of self-justification, self-development and reinforcement, conformity and belonging, and communication and exchange than the low group. These findings suggest that impulse-buying tendency differentiates consumers in terms of post-purchase cognitive responses and identity-related consumption patterns among adult Generation Z sports consumers. The results highlight the heterogeneity of South Korean Gen Z sports consumers and suggest that sports product marketing may benefit from more segmented strategies based on post-purchase reassurance and symbolic value. However, causal interpretations are limited by the cross-sectional design. Full article

Background/Objectives: Physical activity is a cornerstone of preventive health, yet its practice often coexists with the consumption of alcoholic beverages like beer and wine. While these beverages contain bioactive compounds with potential health properties, alcohol itself carries significant risks. This systematic review aimed to synthesize and critically assess the evidence on physical activity and beer and wine consumption. Specifically, we examined their combined effects on metabolic syndrome components (body composition, blood pressure, lipids, glucose metabolism); inflammation and oxidative stress markers; mental health outcomes (cognitive function, mood, sleep); and physical performance, neuromuscular recovery, and fluid balance. Methods: Following a pre-registered protocol (PROSPERO: CRD420261281945), a systematic search of PubMed/MEDLINE, Scopus, and SPORTDiscus was conducted for studies published between 2000 and 2025. Included studies were randomized controlled trials or observational studies involving physically active adults (aged ≥ 18 years) who consumed beer or wine. Studies focusing solely on sedentary populations were excluded. Outcomes assessed included metabolic syndrome components, inflammation, oxidative stress, mental health, cognitive function, and physical performance. Risk of bias was evaluated using Cochrane RoB 2 for RCTs and ROBINS-I for non-randomized studies. Results: Eight studies were included. Moderate beer or wine consumption did not substantially negate the beneficial effects of exercise on cardiometabolic health, body composition, or cognitive function. Higher alcohol intake was associated with elevated blood pressure. Acute post-exercise consumption of alcoholic beer impaired rehydration and neuromuscular recovery, whereas non-alcoholic beer did not. Conclusions: Given the small number of studies and risk of bias, these findings should be interpreted with caution. In physically active populations, moderate beer or wine consumption does not clearly undermine the benefits of regular exercise on metabolic syndrome components (body composition, blood pressure, lipids, glucose metabolism). No additional benefits on inflammation or oxidative stress were observed, nor on mental health outcomes (cognitive function, mood, or sleep). However, acute post-exercise alcohol intake impairs rehydration and neuromuscular recovery, whereas non-alcoholic beer represents a safer alternative. Full article

Shared immersive environment sports venues, virtual classrooms, and collaborative workspaces require multiple users to stream 360° videos simultaneously over the same edge network, yet every existing adaptive bitrate system optimises each viewer in isolation. This self-interested behaviour triggers a bandwidth auction that chronically starves the most uncertain viewers: Jain’s Fairness Index for ten independently optimised agents routinely falls below 0.85. We present FairEdge360, a hierarchical multi-agent reinforcement learning framework that reformulates multi-user 360° streaming as a Decentralised Partially Observable Markov Decision Process (Dec-POMDP) and proves, formally, that fairness and quality are complementary rather than competing objectives. Three tightly coupled innovations make this possible. First, a Lightweight Uncertainty Estimator (LUE) a compact 8385-parameter four-layer MLP evaluates per-device viewport prediction confidence $c_t^i=\sigma \left(w_4^{\top }{h}_3\right)$ in under approximately 2.1 ms on commodity smartphones (95th percentile, iPhone 12 A14 Bionic), enabling selective edge offloading that reduces device energy consumption by 38.9%. Second, a variational Graph Neural Network compresses each agent’s 256-dimensional GRU state into a 32-byte INT8 latent, transmitted over a dynamic RTT-gated neighbourhood graph at 96 bytes per agent per 500 ms 75% less overhead than competing approaches. Third, the edge coordinator maximises the Nash social welfare objective $\mathrm{NSW}={\left({\prod }_{i=1}^N{Q}_i\right)}^{1/N}$, whose gradient $\partial \mathrm{NSW}/\partial Q_i\propto 1/Q_i$ automatically prioritises the most disadvantaged viewer; a formal proof guarantees that every Pareto-optimal policy satisfies $Q_i/{\sum }_j{Q}_j\ge 1/N$. Counterfactual advantage estimation correctly attributes each agent’s marginal contribution to the global reward, eliminating the credit-assignment ambiguity inherent in standard multi-agent baselines. Evaluated on 284 users, 52 omnidirectional videos, and 10,000 real network traces spanning 4G LTE, 5G mmWave, HSDPA, and campus WiFi, FairEdge360 raises Jain’s Fairness Index from 0.934 to 0.976 (+4.5%), improves worst-case user quality-of-experience from MOS 2.54 to MOS 3.21 (+26.4%), and halves rebuffering rate from 2.1% to 1.1%, all within a 20 ms motion-to-photon budget on a commodity smartphone. Full article

Background: Health-related behaviors often cluster during young adulthood, potentially increasing the risk of long-term adverse health outcomes. Understanding how lifestyle risk behaviors co-occur among university students is essential for developing targeted health promotion strategies. Objective: This study aimed to identify lifestyle risk profiles among university students based on the co-occurrence of smoking behavior, alcohol consumption, sedentary behavior, and body weight status. Methods: A cross-sectional study was conducted with 147 university students enrolled in a physical education and sport undergraduate program (mean age: 20.58 ± 2.94 years; 80.3% male). Physical activity and sedentary behavior were assessed using the International Physical Activity Questionnaire–Short Form (IPAQ-SF), while smoking and alcohol consumption were self-reported. Body mass index was used to classify weight status. Lifestyle risk profiles were identified using two-step cluster analysis based on regular smoking, alcohol consumption, sedentary behavior, and overweight/obesity. Differences in cluster distribution according to sex and federated athlete status were examined using chi-square tests. A two-step cluster analysis based on the Bayesian Information Criterion (BIC) and silhouette measure was used to identify lifestyle risk profiles. Results: Overall, 46.9% of participants had experimented with tobacco, 11.6% were current smokers, and 74.8% reported alcohol consumption. Participants accumulated an average of 3772.25 ± 1957.99 MET-min/week of physical activity. Three distinct lifestyle risk profiles were identified. Cluster 1 (46.9%), labeled the alcohol profile, was characterized by alcohol consumption without smoking and no prevalence of being overweight. Cluster 2 (20.4%), the multiple-risk profile, included participants who reported regular smoking, with nearly half presenting sedentary behavior and overweight/obesity. Cluster 3 (32.7%), the overweight profile, was characterized by overweight/obesity combined with alcohol consumption but no smoking. No significant differences were observed in the distribution of lifestyle profiles according to sex (p = 0.111) or federated athlete status (p = 0.087). Conclusions: Lifestyle risk behaviors cluster into distinct profiles among university students, with alcohol consumption appearing across multiple profiles and smoking concentrated in a specific high-risk group. These findings highlight the need for targeted health promotion strategies addressing multiple co-occurring behaviors within university populations. Full article

Speedcubing, the competitive practice of fast solving the Rubik’s Cube, has gained global popularity both as a sporting and an educational activity. Aside from its recreational value, speedcubing may contribute to broader social and developmental outcomes. This study aims to examine the potential of speedcubing as a tool for sustainable social development, concentrating on its educational, psychological, and social implications and its relationship to selected United Nations Sustainable Development Goals (SDGs). An anonymous online survey consisting of 26 items (22 used for the main analysis and 4 demographic items) was conducted among 112 participants associated with the speedcubing community, including active competitors, coaches, and parents. The questionnaire addressed accessibility, cognitive and social competencies, and perceived educational and social benefits, as well as user preferences regarding digital tools supporting learning. The results indicate that participation in speedcubing supports the development of analytical thinking, problem-solving skills, perseverance, and self-control. Respondents also emphasized its educational value, accessibility, and role in fostering fair play and social integration. These findings suggest that speedcubing may contribute to several Sustainable Development Goals (SDGs), particularly SDG 3 (Good Health and Well-being), SDG 4 (Quality Education), and SDG 11 and SDG 12 (Sustainable Cities and Communities; Responsible Consumption and Production). Full article

This study examines the differences in communication preferences and media consumption among three major age groups: Generations X, Y, and Z. It focuses on how each generation receives and interacts with media content. The research aims to identify the most frequently used media for each generation, their content consumption patterns, and their preferred communication methods. It also explores the influence of social and technological factors on shaping these preferences. The study employed a qualitative approach, utilizing focus groups as the data collection tool. The sample comprised three groups representing the three generations, each consisting of eight participants. The results indicate clear generational differences in media preferences. Generation X prefers to rely more heavily on online news sites for information, while Generation Y tends to use social media alongside websites. Generation Z relies primarily on social media, followed by websites, and then traditional media. Regarding content, all three generations share an interest in political issues. However, their priorities in other topics differ. Generation X focuses on social and cultural issues, while Generation Y is interested in cultural and sports content, and Generation Z prefers sports and entertainment content. The results also reveal differences in preferred communication methods, with text messaging remaining a common medium across generations, while Generation Z increasingly relies on voice messages and video calls. These findings help to clarify generational differences in media consumption within the contemporary digital environment. Full article

Background and Objectives: Diabetes is one of the most common chronic non-communicable diseases and represents a major public health problem. At the global level, the epidemic character of diabetes mellitus can be attributed to an extended life expectancy but also to lifestyle. The aim of this study was to examine the sociodemographic, health, and lifestyle characteristics of adults with type 2 diabetes mellitus in Serbia. Materials and Methods: The research is part of the Serbian Population Health Survey conducted in the period from October to December 2019 by the Republic Statistical Office, in cooperation with the Institute of Public Health of Serbia “Dr Milan Jovanović Batut” and the Ministry of Health of the Republic of Serbia. The research instrument was standardized questionnaires constructed in accordance with the European Health Interview Survey (EHIS—European Health Interview Survey, wave 3) questionnaire, which were adapted to the specifics of our area. The research was conducted as a cross-sectional study on a representative sample of the adult population of Serbia. Results: Among 1138 adults with type 2 diabetes in Serbia (52.8% female; mean age 66.0 ± 11.9 years), overweight and obesity were highly prevalent (40.1% and 34.4%, respectively), with Obesity I predominating. Significant gender differences were observed: female more often reported obesity, multimorbidity, and depressive symptoms, whereas men were more physically active and more frequently overweight. Most participants were physically inactive, consumed breakfast and bread daily, and had low engagement in cycling and sports. Alcohol consumption was significantly higher in men, while dietary habits differed by gender for bread intake. These findings highlight substantial gender- and lifestyle-related disparities among adults with type 2 diabetes in Serbia. Conclusions: Targeted interventions promoting healthy lifestyle, physical activity, psychosocial support, and chronic disease management are urgently needed to address gender- and lifestyle-related disparities in adults with type 2 diabetes in Serbia. Full article

Background: Chrononutrition is essential for metabolic health, but relevant evidence in Chinese sports-majoring college students is still insufficient. This study aimed to identify chrononutrition patterns and their associations with body composition and resting metabolic rate (RMR) in college students from a sports university. Methods: A cross-sectional study was conducted among 174 college students from Beijing Sport University (131 sports-majoring and 43 non-sports-majoring). Chrononutrition was measured by the validated Chinese version of the Chrononutrition Profile Questionnaire (CP-Q), body composition by dual-energy X-ray absorptiometry, and RMR by indirect calorimetry. Sample sizes varied across analyses according to data availability, and 133 participants provided valid data for both body composition and resting metabolic rate (RMR) assessments. Results: Frequent night eating was positively correlated with BMI (r = 0.27, p = 0.001), and regular breakfast consumption was related to higher muscle mass percentage (β = 0.23, p < 0.01, sr² = 0.05). Compared with non-sports-majoring students, sports-majoring students had longer weekday eating windows (11.2 ± 2.8 h vs. 8.5 ± 2.5 h, p < 0.001) and a higher dinner energy proportion (37.2 ± 6.9% vs. 30.5 ± 6.5%, p < 0.001). Males had later meal times and longer eating windows than females (breakfast: 7:58 vs. 7:46; dinner: 18:55 vs. 18:41; eating window: 11.5 h vs. 10.9 h; all p < 0.05). Conclusions: Chrononutrition was more closely associated with body composition than with absolute RMR in this predominantly sports-majoring sample of Chinese college students. Regular breakfast and reduced night eating are potential intervention targets for future chrononutrition guidance. However, the findings should be generalized to the broader college student population with caution. Full article