摘要：
The relationship between glucose metabolism and bone health remains underexplored despite its clinical relevance. This study utilized the oral glucose tolerance test (OGTT) and near-infrared spectroscopy (NIRS) to probe gender-specific disparities in tibial hemodynamic responses among young healthy adults. Twenty-eight healthy participants (14 males) aged 18-28 years old were recruited for this study. After ingesting a 75 g glucose solution, tibial hemodynamic responses were captured using NIRS in combination with a 5 min ischemic reperfusion technique, both before and at 30 min intervals for two hours post-glucose ingestion. Parameters measured included oxidative metabolic rate (via tissue saturation index [TSI]), immediate recovery slope after occlusion release (TSI10), and total recovery magnitude (ΔTSI). Post-glucose ingestion, both genders demonstrated a surge in blood glucose concentrations at every time point compared to baseline (p < 0.001, 0.002, 0.009, and 0.039 for males; p < 0.001, < 0.001, = 0.002, and 0.017 for females). Baseline tibial metabolic rate, TSI10, and ΔTSI did not significantly differ between males and females (p = 0.734, 0.839, and 0.164, respectively), with no discernible temporal effects in any hemodynamic parameters within each gender (p = 0.864, 0.308, and 0.399, respectively, for males; p = 0.973, 0.453, and 0.137, respectively, for females). We found comparable tibial hemodynamic responses to OGTT between genders. This study demonstrated the utility of NIRS in evaluating tibial hemodynamic responses to glucose ingestion through OGTT, enriching our understanding of the body's metabolic responses to glucose intake.
作者机构：
School of Leisure Sports and Tourism, Beijing Sport University, Beijing 100084, China;First author: Zhang Youyin, E-mail: yyzhang@bsu.edu.cn;Sports Institutes, Central China Normal University, Wuhan 430079, China;[张佑印] School of Leisure Sports and Tourism, Beijing Sport University, Beijing 100084, China <&wdkj&>First author: Zhang Youyin, E-mail: yyzhang@bsu.edu.cn ;[刘缪伟; 张景全] School of Leisure Sports and Tourism, Beijing Sport University, Beijing 100084, China
通讯机构：
[Zhang Youyin; Liu Miaowei] S;School of Leisure Sports and Tourism, Beijing Sport University, Beijing 100084, China <&wdkj&>First author: Zhang Youyin, E-mail: yyzhang@bsu.edu.cn <&wdkj&>School of Leisure Sports and Tourism, Beijing Sport University, Beijing 100084, China
关键词：
adventure tourism;arcGIS;Citespace;comparison between China;foreign countries;Visualization
摘要：
Adventure tourism is a new industry that integrates sports and tourism. A systematic comparison of domestic and foreign research progress is valuable for understanding the current research situation in China, grasping the latest forms abroad, and guiding the next research direction. Based on the core databases of “China Knowledge Network Database” and “Web of Science”, and the period of 2000–2021 as the time span, CiteSpace V and ArcGIS software were used to compare the research progress of adventure tourism in China and worldwide. (1) The quantity and quality of domestic literature in the field of adventure tourism lag behind the literature from foreign countries. (2) Compared with foreign research scholars, who mainly work in teams of two or three, the number of large research teams in China is larger and they are widely distributed. (3) Compared with foreign research institutions, which are mainly universities concentrated in Europe and North America and have strong inter-institutional ties, China's research institutions are mainly universities concentrated in Beijing, the Yangtze River Delta, and the Yunnan-Guizhou Plateau, but their inter-institutional ties are weak. (4) In terms of research themes, compared with the diffusion model centered on such keywords as “adventure tourism”, “tourism”, “behavior” and “risk”, the research in China presents a characteristic with “adventure tourism” as the center and the other keywords are more diffused. (5) Foreign studies often focus on the environmental impact of adventure tourism activities and environmental protection, while domestic studies tend to focus on the experience and satisfaction of adventure tourists. Accordingly, we propose that the domestic research system of adventure tourism should be improved by constructing a scientific adventure tourism theoretical system, strengthening the cross-disciplinary research of adventure tourism, strengthening the weak research areas, broadening the research population and research area, and paying more attention to research on adventure tourism that is centered on project tourism.
摘要：
Sportsmanship is a core characteristic of competitive sports. To determine the factors related to sportsmanship and explore effective strategies to maintain sportsmanship in adolescent athletes, the present study examined the relationship between anxiety and sportsmanship in adolescent athletes and evaluated the potential mediating roles of athlete burnout and exercise cognition. In this study, 1,544 adolescent athletes (852 boys and 692 girls) with an average age of 14.43 years (SD = 1.92) were enrolled. The analyses showed that there was a significant correlation between state anxiety, trait anxiety, athlete burnout, exercise cognition, and sportsmanship. Additionally, state and trait anxiety were associated with lower levels of sportsmanship, and athlete burnout and exercise cognition played multiple mediating roles in the relationship between anxiety and sportsmanship. These findings suggest that anxiety is a plausible explanation for sportsmanship. Adolescent athletes with high levels of trait or state anxiety are more likely to experience athlete burnout, have poorer levels of exercise cognition, and display less sportsmanship.
