Related Experiment Video
Updated: Jan 21, 2026
11:27
Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
Published on: December 4, 2016
10.5K
Identifying Influence Agents That Promote Physical Activity Through the Simulation of Social Network Interventions:
Thabo J van Woudenberg1, Bojan Simoski2, Eric Fernandes de Mello Araújo2
1Behavioural Science Institute, Radboud University, Nijmegen, Netherlands.
Journal of Medical Internet Research
|August 6, 2019
Summary
Social network interventions effectively increase physical activity in children. Selecting influence agents based on closeness centrality yields the best results, outperforming random selection and other centrality measures.
Area of Science:
- Public Health
- Social Network Analysis
- Computational Modeling
Background:
- Social network interventions can significantly impact children's physical activity.
- Designing effective social network interventions presents a research challenge.
- Understanding the interplay between social networks and health behaviors is crucial.
Purpose of the Study:
- To identify the optimal selection criterion for influence agents in social network interventions.
- To maximize the increase in physical activity among primary and secondary school children.
- To assess the influence of network characteristics on intervention effectiveness.
Main Methods:
- Utilized a validated agent-based model to simulate physical activity spread.
- Simulated social network interventions with various influence agent selection criteria (centrality measures, random).
- Analyzed intervention success based on network density and centralization.
Main Results:
- Social network interventions significantly increased physical activity compared to no intervention.
- Centrality-based agent selection outperformed random selection.
- Closeness centrality proved more effective than betweenness centrality.
Conclusions:
- Social network interventions are a promising method for promoting physical activity.
- Social network analysis and agent-based modeling are valuable tools for intervention design.
- Strategic selection of influence agents is key to intervention success.
More Related Videos
10:23Author Spotlight: Computing the Effects of a Local Radiofrequency Hyperthermia Intervention on Tumor Biomechanics
Published on: December 1, 2023
986
08:53Integrating Computerized Linguistic and Social Network Analyses to Capture Addiction Recovery Capital in an Online Community
Published on: May 31, 2019
5.5K
Related Concept Videos
01:29Subviral Agents
542
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
542
01:27Air-entraining Agents
260
Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
260
01:19Masking and Demasking Agents
3.5K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
3.5K
01:06Oral Hypoglycemic Agents: Glinides
608
Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively...
608
01:29Spasmolytic Agents: Chemical Classification
1.3K
Spasmolytic agents are drugs used to alleviate muscle spasms and spasticity. They can be categorized into different chemical groups based on their mechanisms of action. Centrally acting spasmolytics primarily affect the spinal cord, while others directly target skeletal muscle cells.
A major class of centrally acting spasmolytics is the α2-agonist, such as tizanidine. These drugs bind to α2-adrenoceptors, inhibiting the release of the excitatory neurotransmitter glutamate. They also...
A major class of centrally acting spasmolytics is the α2-agonist, such as tizanidine. These drugs bind to α2-adrenoceptors, inhibiting the release of the excitatory neurotransmitter glutamate. They also...
1.3K
02:57The Sense of Self: Reflected Self-Appraisal and Social Comparison
55.5K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
55.5K