Purpose: Footwork speed is closely linked to explosive strength, and both percentage- (PBRT) velocity-based resistance training (VBRT) are popular methods for developing muscle strength. This study aimed compare the effects of PBRT VBRT on lower limb power footwork movement in elite university badminton players over a 6-week period. Methods: A total 20 (12 males, 8 females) from Tongji University were randomly divided into (n = 10) groups 10). The group trained with loads determined by...

Abstract Various epidemic prevention and control measures aimed at reducing person-to-person contact has paid a certain cost while controlling the epidemic. So accurate evaluation of these helps to maximize effectiveness minimizing social costs. In this paper, we develop model in Dirk Brockmann Helbing (2013) theoretically explain impact mechanism traffic distancing on spread epidemic, empirically tests effect two China present stage using econometric approach. We found that both have played...

Based on a unified framework, this study explores the influence of regional intellectual property protection (IPP) domestic value added in exports. A theoretical model is constructed to illustrate that IPP affects types and prices intermediate goods through effects market power, product category, crowding-out, influences choice imported raw materials, finally exports enterprises. Empirical evidence provided utilizing China Customs Statistics, Chinese Industrial Enterprise Database,...

With the adoption of concept sustainable development, mega sports events (MSEs) are gradually aiming to be greener and lower their carbon footprints. As such, does hosting MSEs provide an opportunity for urban green transformation? Taking in China as a quasi-natural experiment using prefecture-level panel data from 2000 2020, we empirically explored effects mechanisms MSE on economic development areas by applying time-varying difference-in-differences (DID) approach. The findings revealed...

Abstract The COVID-19 epidemic in China has been effectively controlled. It is of great significance to study the law cross-regional spread epidemic, for prevention and control future other countries or regions. In this study, connection intensity between cities was characterized based on probability effective distance shortest path tree, empirical analysis carried out high-frequency data such as cases COVID 19 outbreaks. concluded that higher inter-city connection, larger scale epidemic.

Abstract With the rapid development of mobile Internet in China, information epidemic is full-time and holographic, role diffusion control increasingly prominent. At same time, publicity all kinds big data also provides possibility to explore impact media on disease transmission. This paper explores mechanism influence spread novel coronavirus, develops a model interaction between transmission based SIR model, empirically tests COCID-19 by using econometric method. The result shows that...

The 2022 Beijing Winter Olympics is a representative large-scale sporting event, which not only promotes the development of national and regional economy, society, culture but also increases demand residents for winter sports, thus helping achieve grand goal "encouraging 300 million people to participate in sports." This research explores influence on residents' sports Beijing-Tianjin-Hebei Yangtze River Delta urban agglomerations China.Applying big data mining techniques, Baidu Index...

We collected COVID-19 epidemiological and epidemic control measures-related data in mainland China during the period January 1 to February 19, 2020, empirically tested practical effects of measures implemented by applying econometrics approach. The results show that nationally, both traffic social distancing have played an important role controlling outbreak epidemic, however, neither two had a significant effect low-risk areas. Moreover, is more successful than distancing. Both complement...

The total mileage of highways in China ranks first the world and constitutes an important symbol China’s modernization. Economists, however, continue to debate whether always promote economic growth every region how assess impact. In this paper, we use OD-MATRIX method calculate shortest highway traveling time among 332 prefecture-level cities from 2000 2013. It is shown that reduction brought by construction significantly improves enterprise productivity. Second, further explore mechanism...

This paper presents an in-depth study of a statistical system using image feature extraction technology for cultural heritage tourism information. Based on the specificity industry, it combines technical architecture, framework extraction, GIS basic design, database and other related theories; realizes visual mapping through relevant statistics in GIS; uses spatial analysis capability ArcGIS software to complete scheme information data context Internet big data. In this paper, preprocessing...

This study aims to investigate the effects and influencing mechanisms of regular physical activity (RPA) on COVID-19 pandemic. Daily data from 279 prefecture-level cities in mainland China were collected 1 January 17 March 2020. A two-way fixed-effects model was used identify causal relationship between COVID-19, while also considering factors such as patterns human behavior socioeconomic conditions. The instrumental variable (IV) approach applied address potential endogeneity issues for a...

What kind of role do sports champions play in the COVID-19 epidemic? Do they contribute to mitigation epidemic by some pathway? In this paper, we empirically explore influence and mechanism demonstration effect upon using COVID-19-related dataset prefecture-level cities China from 1 January 2020 17 March 2020. The two-way fixed model econometrics is applied estimate result, instrumental variable approach adopted address potential endogeneity issues, socio-economic factors including public...

Our study aims to investigate the health benefit of regular physical exercise participation on a series COVID-19 outcomes including morbidity, mortality, and cure rate.Prefecture-level panel data related pandemic in China were collected from January 1 March 17, 2020, (N = 21379). Multiple linear regression was conducted, ordinary least squares technique used estimate coefficient.It shown that sports significantly negatively affected morbidity (estimate -1.1061, p<0.01) mortality -0.3836,...

Abstract Background: Similar to other infectious diseases, weather conditions may affect the COVID-19 epidemic through changes transmission dynamics, host susceptibility, and virus survival in environment. It’s critical explore relationship between variables spread of for understanding seasonality possibility future outbreaks, developing early warning systems, infection control methods, public health measures. However, influence change on edidemic is still an emerging research field, there...