Introduction: Youth activity guideline compliance is generally low across most western countries and Dutch youth are no exception to this. Thirty-two percent of 4-11 year old boys and girls, and 15% of 12-17 year olds are currently meeting the physical activity (PA) guideline recommendations of one hour of daily moderate-to-vigorous PA (MVPA) (Hildebrandt, Ooijendijk, & Hopman Rock, 2008). Physical education (PE) has been attributed an important role in providing young people with physical activity (Kahn, et al., 2002). If sufficiently active, PE lessons could contribute to physical activity levels in youth. Therefore, the purpose of this study was to determine the overall intensity of Dutch primary and secondary school physical education (PE) lessons and the influence of various lesson characteristics on these intensity levels. Methods: Heart rates were measured using the Polar Team System in a nationally distributed sample of 913 students in 40 schools (20 primary schools and 20 secondary schools) in the Netherlands. A total of 106 lessons were assessed, with 10 students per class (5 boys and 5 girls) wearing a heart rate monitor for the duration of their PE class. Teachers were asked not to deviate from their regular PE program and to carry out their lessons as they had planned. None of the lessons had a specifically planned physical activity intensity focus. Results: Overall percentages lesson time in MVPA were 46.7% and 40.1% during primary school and secondary school PE respectively. Primary school students engaged in significantly more MVPA than did secondary school students (t (890) = 4.635, p<.001). Furthermore, results indicated a sharp decline in girls' PE intensity levels in secondary school, where boys were more active than girls (F (1,912) = 9,58, p<.01). Subsequent analyses of lesson content in secondary school students indicated that girls were less active during teamgames, but not during individual activities or lessons with a mixed subject (both teamgames and individual activities) (45.7% vs. 34.7% F (3,451) = 16.31, p<.001, figure 1). Discussion: Our results show that one PE lesson roughly accounts for one-third of the daily amount of physical activity as prescribed by activity guidelines. Furthermore, previous research has shown that by including lesson intensity as an additional lesson goal it is relatively simple to increase lesson intensity (Verstraete, Cardon, De Clercq, & De Bourdeaudhuij, 2007). Therefore, increasing lesson intensity combined with increasing the number of weekly PE lessons seems an effective strategy to increase youth physical activity through PE. However, given the curricular and time constraints in most schools, PE should not be seen as a stand-alone solution for combating inactivity. Combined with other school-based PA opportunities (active transport, active breaks) however, PE could make a meaningful contribution to daily PA in youth. Finally, the high prevalence of coeducational teamgames (61% of all lessons) in the Dutch secondary school PE curricula might prevent girls from attaining similar physical activity levels to boys during PE. Therefore, more research is needed on maximising secondary school girls' participation during teamgames.
Background: Acquiring the theoretical and practical knowhow of conducting patient and public involvement (PPI) in research is not part of the traditional curriculum of researchers. Zuyd University of Applied Sciences and Huis voor de Zorg, a regional umbrella patient organization, therefore started a 1.5-year coaching programme. Objective: To establish a community of practice by developing a PPI coaching programme for senior and junior health services researchers of Zuyd University. The context consisted of research projects conducted by the participants. Methods: A participatory action research methodology. Data were collected from reports of thematic group meetings and individual sessions with participants, field notes and regular reflection meetings with the project team. Data were analysed by reflexive deliberation. Findings: The programme comprised a kick-off meeting (52 attendees), followed by 7 group meetings with 11 junior and 9 senior researchers. The project team constructed a serious game based on the concept of the participation ladder. Questions and concerns differed for junior and senior researchers, and separate tailored meetings were organized for both groups. Between group meetings, participants received individual assignments. Group meetings were accompanied by individual coaching sessions to provide tailor-made feedback. The programme concluded with a combined meeting with all stakeholders. Conclusion: Building a community of PPI practice through action research facilitates the development of a coaching programme that fosters social learning, empowerment and the development of a shared identity concerning PPI. The role and responsibilities of senior researchers should be distinguished from those of junior researchers.
It has been suggested that physical education (PE) and active transport can make a meaningful contribution to children's physical activity (PA) levels. However, data on the contribution these activities to total PA is scarce, and PE's contribution to total physical activity energy expenditure (PAEE) has to our knowledge never been determined. This is probably explained by the methodological complexity of determining PAEE (Welk, 2002). In this paper, we present the first data of an ongoing study using combined heart rate monitoring and accelerometry, together with activity diaries. Over the six measurement days, PE contributed 5% to total PAEE, and 16% to school-related PAEE, whereas active transportation had a much larger contribution.
Designing cities that are socially sustainable has been a significant challenge until today. Lately, European Commission’s research agenda of Industy 5.0 has prioritised a sustainable, human-centric and resilient development over merely pursuing efficiency and productivity in societal transitions. The focus has been on searching for sustainable solutions to societal challenges, engaging part of the design industry. In architecture and urban design, whose common goal is to create a condition for human life, much effort was put into elevating the engineering process of physical space, making it more efficient. However, the natural process of social evolution has not been given priority in urban and architectural research on sustainable design. STEPS stems from the common interest of the project partners in accessible, diverse, and progressive public spaces, which is vital to socially sustainable urban development. The primary challenge lies in how to synthesise the standardised sustainable design techniques with unique social values of public space, propelling a transition from technical sustainability to social sustainability. Although a large number of social-oriented studies in urban design have been published in the academic domain, principles and guidelines that can be applied to practice are large missing. How can we generate operative principles guiding public space analysis and design to explore and achieve the social condition of sustainability, developing transferable ways of utilising research knowledge in design? STEPS will develop a design catalogue with operative principles guiding public space analysis and design. This will help designers apply cross-domain knowledge of social sustainability in practice.
Aanleiding: De belangstelling voor gezonde en veilige voeding is groot. Bij de gezondheidseffecten van voeding spelen de darmen een cruciale rol. Verschillende soorten bedrijven hebben behoefte aan natuurgetrouwe testmodellen om de effecten van voeding op de darmen te bestuderen. Ze zijn vooral op zoek naar modellen waarvan de uitkomsten direct vertaalbaar zijn naar het doelorganisme (de mens of bijvoorbeeld het varken) en die niet gebruikmaken van kostbare en maatschappelijke beladen dierproeven. Doelstelling Het project 2-REAL-GUTS heeft als doel om twee innovatieve dierproefvrije darmmodellen geschikt te maken voor onderzoek naar voedingsconcepten en -ingrediënten. De twee darmmodellen die worden toegepast zijn darmorganoïden, minidarmorgaantjes bestaande uit stamcellen, en darmexplants bestaande uit hele stukjes darm verkregen uit relevante organismen. Beide modellen hebben potentieel heel uitgebreide toepassingsmogelijkheden en hebben ook grote voordelen ten opzichte van de huidige veelgebruikte cellijnen, omdat ze meerdere in de darm aanwezige celtypen bevatten en uit verschillende specifieke darmregio's te verkrijgen zijn. Gezamenlijk gaan de partners werken aan: 1) het aanpassen van de kweekomstandigheden zodat darmmodellen geschikt worden om de vragen van partners te beantwoorden; 2) het vaststellen van de toepassingsmogelijkheden van de darmmodellen door verschillende stoffen en producten te testen. Beoogde resultaten Kennisconferenties, publicaties en exploitatie van de modellen zullen zorgen voor het verspreiden van de opgedane kennis. Omdat het project gebruikmaakt van moderne, op de toekomst gerichte laboratoriumtechnieken (kweekmethoden met stamcellen en vitaal weefsel, moleculaire analyses en microscopie), leent het zich uitstekend om geïmplementeerd te worden in het hbo-onderwijs. Als spin-off zal het project dan ook voorzien in een specifieke, voor Nederland unieke hbo-minor op het gebied van stamcel- en aanverwante technologie (zoals organ-on-a-chiptechnologie).
In this proposal, a consortium of knowledge institutes (wo, hbo) and industry aims to carry out the chemical re/upcycling of polyamides and polyurethanes by means of an ammonolysis, a depolymerisation reaction using ammonia (NH3). The products obtained are then purified from impurities and by-products, and in the case of polyurethanes, the amines obtained are reused for resynthesis of the polymer. In the depolymerisation of polyamides, the purified amides are converted to the corresponding amines by (in situ) hydrogenation or a Hofmann rearrangement, thereby forming new sources of amine. Alternatively, the amides are hydrolysed toward the corresponding carboxylic acids and reused in the repolymerisation towards polyamides. The above cycles are particularly suitable for end-of-life plastic streams from sorting installations that are not suitable for mechanical/chemical recycling. Any loss of material is compensated for by synthesis of amines from (mixtures of) end-of-life plastics and biomass (organic waste streams) and from end-of-life polyesters (ammonolysis). The ammonia required for depolymerisation can be synthesised from green hydrogen (Haber-Bosch process).By closing carbon cycles (high carbon efficiency) and supplementing the amines needed for the chain from biomass and end-of-life plastics, a significant CO2 saving is achieved as well as reduction in material input and waste. The research will focus on a number of specific industrially relevant cases/chains and will result in economically, ecologically (including safety) and socially acceptable routes for recycling polyamides and polyurethanes. Commercialisation of the results obtained are foreseen by the companies involved (a.o. Teijin and Covestro). Furthermore, as our project will result in a wide variety of new and drop-in (di)amines from sustainable sources, it will increase the attractiveness to use these sustainable monomers for currently prepared and new polyamides and polyurethanes. Also other market applications (pharma, fine chemicals, coatings, electronics, etc.) are foreseen for the sustainable amines synthesized within our proposition.
