99 results for "Hongjun Yu"
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Journal Article
Impact of ambient air pollution on physical activity and sedentary behavior in children
Abstract Background Exposure to air pollution has become a serious environmental issue affecting children’s health and health-related behavior in China. Previous studies have focused on the associations between air pollution and physical activity among adults; however, few have examined the…
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Geometric Path Planning and Synchronization for Multiple Vehicles
In known environments, vehicles plan paths to the target and take precautions to minimize risks. Due to limited dynamics, bounded turning radii, and unfavorable initial conditions, they may be momentarily exposed to threats. In this study, we propose multi-objective real-time optimization based on…
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Meta-analysis of the effects of physical activity on executive function in children and adolescents with attention deficit hyperactivity disorder
Background: Executive function is a core deficit in children with attention deficit hyperactivity disorder (ADHD). This study systematically reviewed the evidence for the effects of physical activity (PA) interventions on executive function in children and adolescents with ADHD and explored the…
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Effects of green space on physical activity and body weight status among Chinese adults: a systematic review
BackgroundGreen space may provide many benefits to residents’ health behaviors and body weight status, but the evidence is still relatively scattered among Chinese adults. The purpose of this study was to review the scientific evidence on the effects of green space on physical activity (PA) and…
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Effects of prenatal yoga on birth outcomes in nulliparous women: a systematic review and meta-analysis of randomized controlled trials
Abstract Background Prenatal yoga uniquely integrates moderate aerobic activity with mindfulness‑based stress reduction, diaphragmatic breathing, and targeted pelvic‑floor conditioning. This study aimed to investigate whether yoga could influence the rates of cesarean section, episiotomy, perineal…
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The Correlation Between Pre-Competition Training, Stroke Power Monitoring, and Race Time in Indoor Rowing
The purpose of this study is to provide data-driven training optimization tools for indoor rowing coaches and athletes, provide quantitative reference for training monitoring and performance analysis in a controllable environment, and help improve the scientific level of competitive performance and…
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Effects of the intensity, duration and muscle mass factors of isometric exercise on acute local muscle hemodynamic responses and systematic blood pressure regulation
Isometric exercise is a non-pharmacologic intervention to improve muscle hemodynamic responses and blood pressure in humans. However, the effects of intensity, duration, and muscle mass factors of isometric exercise on local muscle hemodynamic responses and systemic blood pressure regulation have…
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A systematic review and meta-analysis of the mechanism of action of Tai Chi on cardiovascular disease: evidence map of aerobic and mind-body exercise pathways
Abstract Cardiovascular disease (CVD) remains a leading global health burden, particularly in low- and middle-income countries. Tai Chi is a mind-body exercise with reported cardiovascular benefits, but its mechanistic pathways and comparative effects versus aerobic exercise are not well defined…
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Influence of Operating Conditions and Crushing Chamber on Energy Consumption of Cone Crusher
This paper provides an energy consumption model and explains how the operating conditions and structural parameters of a crushing chamber affect energy consumption. Energy consumption is closely related to compressive pressure and displacement. The relationship between pressure, displacement and…
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Journal Article
Effects of neighborhood built environment on cognitive function in older adults: a systematic review
Abstract Background In the background of an aging population, the risk of cognitive impairment in the older population is prominent. Exposure to complex neighborhood built environments may be beneficial to the cognitive health of older adults, and the purpose of this study was to systematically…
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Journal Article
Coordinated collision avoidance for multi‐vehicle systems based on collision time
Abstract Vehicles have irregular shapes and inter‐vehicle coordination is not a trivial task. Based on the distributed‐system framework, this paper studies multi‐vehicle control and coordinated obstacle avoidance for multiple autonomous vehicles with irregular shapes. The goal is to reach target…
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Journal Article
Ionic liquids modified CNTs and graphene as additive in vegetable lubricating oil: A route for sustainable tribology
The multi-walled carbon nanotubes (MWCNTs) and graphene oxide (GO) were covalently functionalised with imidazolium salt-based ionic liquids. The acid chloride-functionalised MWCNTs and GO were coupled with 1-(3-aminopropyl) imidazole, and then the products were reacted with 1-bromobutane. The…
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Journal Article
Energy Consumption Analysis of High-Speed Trains under Real Vehicle Test Conditions
The study collected statistics on the actual operation of national railway electric multiple units (EMUs) and compared the energy consumption of different EMU models at different speed levels. An important method for studying the relationship between speed and energy consumption of EMUs has been…
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The impact of internal and external loads on player performance in Chinese basketball association
Abstract Background Limited research has investigated the association between training load and performance of basketball players during games. Little is known about how different indicators of player performance are affected by internal and external loads. The purpose of this study was to…
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Journal Article
Correlation analysis of the urban community environment and health promotion among adults aged ≥ 55 years: the mediating role of physical activity
Abstract Background Physical health (PH), including muscle strength, endurance, and the ability to perform daily physical tasks, gradually declines with increasing age, leading to disability and an increased disease burden. Both the urban community environment (UCE) and physical activity (PA) were…
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Journal Article
Objectively measured the impact of ambient air pollution on physical activity for older adults
Abstract Background Air pollution poses a significant health risk to the human population, especially for vulnerable groups such as the elderly, potentially discouraging their engagement in physical activity. However, there is a lack of sufficient objective and longitudinal data in current research…
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Societal attitudes and structural barriers in coaching para-athletes: A mixed-methods systematic review
Coaching athletes with disabilities is essential for promoting inclusivity and equity in sports. However, societal attitudes (e.g., stigmatization and ableism) and structural barriers (e.g., insufficient funding and limited access to adaptive equipment) persist as significant obstacles to their…
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The association between ambient fine particulate air pollution and physical activity: a cohort study of university students living in Beijing
Abstract Background Air pollution has become a substantial environmental issue affecting human health and health-related behavior in China. Physical activity is widely accepted as a method to promote health and well-being and is potentially influenced by air pollution. Previous population-based…
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Factors influencing the relationship between coaches and athletes with disabilities: a systematic review
IntroductionThe relationship between coaches and athletes with disabilities is critical for enhancing athletes' performance and psychosocial well-being. This study aims to provide evidence-based recommendations for coaches, sports organizations, and policymakers dedicated to supporting athletes…
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DSCA-HLAII: A dual-stream cross-attention model for predicting peptide–HLA class II interaction and presentation
Motivation: The interaction between peptides and human leukocyte antigen class II (HLA-II) molecules plays a pivotal role in adaptive immune responses, as HLA-II mediates the recognition of exogenous antigens and initiates T cell activation through peptide presentation. Accurate prediction of…