Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Implementation of a multicomponent telemonitoring intervention to improve nutritional status of community-dwelling older adults : A process evaluation
Doorn-van Atten, Marije N. van; Groot, Lisette C.P.G.M. de; Romea, Albert Collet ; Schwartz, Simon ; Vries, Jeanne H.M. De; Haveman-Nies, Annemien - \ 2019
Public Health Nutrition 22 (2019)2. - ISSN 1368-9800 - p. 363 - 374.
Implementation research - Older adults - Telemonitoring - Undernutrition

ObjectiveThe present study aimed to conduct a process evaluation of a multicomponent nutritional telemonitoring intervention implemented among Dutch community-dwelling older adults.DesignA mixed-methods approach was employed, guided by the process evaluation framework of the Medical Research Council and the Unified Theory of Acceptance and Use of Technology. The process indicators reach, dose, fidelity and acceptability were measured at several time points within the 6-month intervention among participants and/or nurses.SettingThe intervention was implemented in the context of two care organisations in the Netherlands.SubjectsIn total, ninety-seven participants (average age 78 years) participated in the intervention and eight nurses were involved in implementation.ResultsAbout 80 % of participants completed the intervention. Dropouts were significantly older, had worse cognitive and physical functioning, and were more care-dependent. The intervention was largely implemented as intended and received well by participants (satisfaction score 4·1, scale 1-5), but less well by nurses (satisfaction score 3·5, scale 1-5). Participants adhered better to weight telemonitoring than to telemonitoring by means of questionnaires, for which half the participants needed help. Intention to use the intervention was predicted by performance expectancy (β=0·40; 95 % CI 0·13, 0·67) and social influence (β=0·17; 95 % CI 0·00, 0·34). No association between process indicators and intervention outcomes was found.ConclusionsThis process evaluation showed that nutritional telemonitoring among older adults is feasible and accepted by older adults, but nurses' satisfaction should be improved. The study provided relevant insights for future development and implementation of eHealth interventions among older adults.

Feasibility and Effectiveness of Nutritional Telemonitoring for Home Care Clients: A Pilot Study
Doorn-van Atten, Marije N. van; Haveman-nies, Annemien ; Heery, Daniel ; Vries, Jeanne H.M. de; Groot, Lisette C.P.G.M. de - \ 2019
The Gerontologist 59 (2019)1. - ISSN 0016-9013 - p. 158 - 166.
Background and Objectives: Undernutrition has unfavorable consequences for health and quality of life. This pilot study aimed to evaluate the feasibility of a telemonitoring intervention to improve the nutritional status of community-dwelling older adults. Research Design and Methods: The study involved a one-group pretest post-test design, complemented by a qualitative study. The 3-month intervention included 20 Dutch home care clients aged >65 years and consisted of nutritional telemonitoring, television messages, and dietary advice. A process evaluation provided insight into intervention delivery and acceptability. Changes in behavioral determinants, diet quality, appetite, nutritional status, physical functioning, and quality of life were assessed. Results: Researchers and health care professionals implemented the intervention as intended and health care professionals accepted the intervention well. However, 9 participants dropped out, and participants’ acceptance was low, mainly due to the low usability of the telemonitoring television channel. Adherence to the telemonitoring measurements was good, although participants needed more help from nurses than anticipated. Participants increased compliance to several Dutch dietary guidelines and no effects on nutritional status, physical functioning, and quality of life were found. Discussion and Implications: Successful telemonitoring of nutritional parameters in community-dwelling older adults starts with optimal usability and acceptability by older adults and their health care professionals. This pilot study provides insight into how to optimize telemonitoring interventions for older adults for maximum impact on behavior and health.
Lachen als een boer met subsidie
Doorn, Anne van - \ 2018
The relationship of habitual diet with esophageal inflammation and integrity in eosinophilic esophagitis
Kroon, Marlou L.A. de; Warners, Marijn J. ; Ampting, Marleen T.J. van; Harthoorn, Lucien F. ; Bredenoord, Arjan J. ; Doorn, Mylene van; Kok, Melanie ; Rhijn, Bram D. van; Eussen, Simone R.B.M. ; Vlieg-Boerstra, Berber J. - \ 2018
Allergy (2018). - ISSN 0105-4538 - 4 p.
adults - eosinophilic esophagitis - esophageal mucosal integrity - habitual dietary intake - inflammation
Domesticated equines differ in their faecal microbiota
Edwards, J.E. ; Schennink, Angeline ; Burden, F. ; Long, S. ; Doorn, D.A. van; Pellikaan, W.F. ; Dijkstra, J. ; Saccenti, E. ; Everts, H. ; Smidt, H. - \ 2018
- 1 p.
Natural selection for Varroa resistance: new project has started.
Blacquiere, Tjeerd - \ 2018
Rewilding Hony bees in the Netherlands.
Blacquiere, Tjeerd - \ 2018
Telemonitoring to improve nutritional status in community-dwelling elderly : Design and methods for process and effect evaluation of a non-randomized controlled trial
Doorn-van Atten, M.N. van; Haveman-Nies, A. ; Pilichowski, P. ; Roca, R. ; Vries, J.H.M. de; Groot, C.P.G.M. de - \ 2018
BMC Geriatrics 18 (2018)1. - ISSN 1471-2318
Community-dwelling elderly - Prevention - Real-life setting - Study protocol - Telemonitoring - Undernutrition

Background: A good nutritional status is key for maintaining health and quality of life in older adults. In the Netherlands, 11 to 35% of the community-dwelling elderly are undernourished. Undernutrition or the risk of it should be signalled as soon as possible to be able to intervene at an early stage. However, in the context of an ageing population health care resources are scarce, evoking interest in health enabling technologies such as telemonitoring. This article describes the design of an intervention study focussing at telemonitoring and improving nutritional status of community-dwelling elderly. Methods: The PhysioDom Home Dietary Intake Monitoring intervention was evaluated using a parallel arm pre-test post-test design including 215 Dutch community-dwelling elderly aged > 65 years. The six-month intervention included nutritional telemonitoring, television messages, and dietary advice by a nurse or a dietician. The control group received usual care. Measurements were performed at baseline, after 4.5 months, and at the end of the study, and included the primary outcome nutritional status and secondary outcomes behavioural determinants, diet quality, appetite, body weight, physical activity, physical functioning, and quality of life. Furthermore, a process evaluation was conducted to provide insight into intervention delivery, feasibility, and acceptability. Discussion: This study will improve insight into feasibility and effectiveness of telemonitoring of nutritional parameters in community-dwelling elderly. This will provide relevant insights for health care professionals, researchers, and policy makers. Trial registration: The study was retrospectively registered at (identifier NCT03240094) since August 3, 2017.

Het GLB na 2020: mogelijkheden voor biodiversiteit, bodem en klimaat
Erisman, Jan Willem ; Doorn, Anne van - \ 2018
Bunnik : Louis Bolk Instituut (WENR rapport 2908) - 31
Evaluation of titanium dioxide and chromic oxide as digestibility markers in ponies fed alfalfa hay in relation to marker dosing frequency
Schaafstra, F.J.W.C. ; Doorn, D.A. van; Schonewille, J.T. ; Boom, R. Van Den; Verschuur, M. ; Blok, M.C. ; Hendriks, W.H. - \ 2018
Animal (2018). - ISSN 1751-7311
apparent digestibility - CrO - equines - TiO - total faeces collection

In equines, Cr2O3 is widely accepted as an indigestible marker, but there are health concerns regarding the carcinogenic properties of Cr2O3. Recently, TiO2 has been suggested to be an alternative digestibility marker in equines. However, a comparison between Cr2O3 and TiO2 has not been made in equines. Six Welsh pony geldings (initial BW: 254±3 kg; 7 years of age) fed chopped alfalfa hay were used to evaluate the use of TiO2 (Ti) and Cr2O3 (Cr) as markers for calculating apparent digestibility and to investigate the effect of frequency of marker administration on the measurement of digestibility values. Diets contained 4.65 kg dry matter (DM) chopped alfalfa hay supplemented with minerals, vitamins, TiO2 (3.3 g Ti/day) and Cr2O3 (3.2 g Cr/day). Ponies were dosed with either 3.3 g Ti and 3.2 g Cr once daily (DF1) or with 1.65 g Ti and 1.60 g Cr twice daily (DF2). After adaptation to the diets and procedures for 14 days, voluntary voided faeces were collected quantitatively over 7 days and analysed for moisture, ash, Ti and Cr. Apparent total tract DM digestibility (DMD) and organic matter digestibility (OMD) were calculated using the total faecal collection (TFC) and marker method (Ti and Cr). The overall mean cumulative faecal recovery of Cr and Ti (as % of intake) were 102.0% and 96.6%, respectively. Mean daily faecal recoveries of Cr as well as of Ti were not different (P=0.323; P=0.808, respectively) between treatments. Overall daily faecal recovery of Cr differed (P=0.019) from 100% when the marker was dosed once daily, whereas overall daily faecal recovery was similar to 100% for both administration frequencies when Ti was used as a marker. For both markers, the coefficient of variation of the mean faecal marker recovery between horses was lower when the markers were administrated twice per day. Across treatments, cumulative DMD and OMD estimated with Ti were similar (P=0.345; P=0.418, respectively) compared with those values determined by TFC method. When Cr was used, the calculated cumulative DMD tended (P=0.097) to be greater compared with those estimated with TFC, and cumulative OMD values were overestimated (P=0.013). Orally supplemented Ti recovery in the faeces of ponies fed chopped alfalfa hay with Ti administered once or twice daily was close to 100%, making it the preferred marker for digestibility trials in equines.

Feiten en cijfers vergroening GLB 2017
Elbersen, Berien ; Smidt, Rob ; Doorn, Anne van - \ 2018
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2907) - 35
Voorliggend rapport presenteert de uitkomsten van een monitoring van de vergroening voor het jaar 2017 volgens de geactualiseerde methode en gebruikmakend van gegevens die werden verzameld in samenwerking metRVO . De evaluatie laat zien hoe en door welke boeren maatregelen voor blijvend grasland, gewasdiversificatie en ecologische aandachtsgebieden entevens deequivalente maatregelenzijn opgepakt. D e resultatenwe rden geïnterpreteerd wat betreft te verwachten effecten in relatie tot de gestelde doelen van de vergroening. In de analyse worden ook de resultaten uit de voorgaande monitoringsrapportage betrokken, zodat een beeld ontstaat wat de vergroening na drie jaar heeft opgeleverd.
Determinants of Behaviour Change in a Multi-Component Telemonitoring Intervention for Community-Dwelling Older Adults
Doorn-van Atten, M.N. van; Groot, C.P.G.M. de; Vries, J.H.M. de; Haveman-Nies, A. - \ 2018
Nutrients 10 (2018)8. - ISSN 2072-6643
Optimal diet quality and physical activity levels are essential for healthy ageing. This study evaluated the effects of a multi-component telemonitoring intervention on behavioural determinants of diet quality and physical activity in older adults, and assessed the mediating role of these determinants and two behaviour change techniques in the intervention’s effects. A non-randomised controlled design was used including 214 participants (average age 80 years) who were allocated to the intervention or control group based on municipality. The six-month intervention consisted of self-measurements of nutritional outcomes and physical activity, education, and follow-up by a nurse. The control group received regular care. Measurements took place at baseline, after 4.5 months and at the end of the study. The intervention increased self-monitoring and improved knowledge and perceived behavioural control for physical activity. Increased self-monitoring mediated the intervention’s effect on diet quality, fruit intake, and saturated fatty acids intake. Improved knowledge mediated the effect on protein intake. Concluding, this intervention led to improvements in behavioural determinants of diet quality and physical activity. The role of the hypothesised mediators was limited. Insight into these mechanisms of impact provides directions for future development of nutritional eHealth interventions for older adults, in which self-monitoring may be a promising behaviour change technique. More research is necessary into how behaviour change is established in telemonitoring interventions for older adults.
Technische Briefing Kringlooplandbouw; Notitie opgesteld op verzoek van de Tweede Kamer Commissie LNV : Wat mogen we verwachten van een circulaire voedselproductie gebaseerd op een kringlooplandbouw, in het perspectief van klimaat- en biodiversiteitdoelen?
Scholten, M.C.T. ; Bianchi, F.J.J.A. ; Boer, I.J.M. de; Conijn, J.G. ; Dijkstra, J. ; Doorn, A.M. van; Ende, J.E. van den; Fresco, L.O. ; Jongschaap, R.E.E. ; Kernebeek, H.R.J. van; Lesschen, J.P. ; Olde, E.M. de; Schulte, Rogier ; Termeer, C.J.A.M. ; Vorst, J.G.A.J. van der; Vos, J.A. de; Woltjer, G.B. - \ 2018
Wageningen University and Research - 14 p.
Breeding a healthier hen is possible
Berghof, Tom - \ 2018

geinterviewd door Dick van Doorn

Fokken op betere gezondheid hen
Berghof, Tom - \ 2018

Interviewer Dick van Doorn

Beoordeling ecologische en milieueffecten door opheffen scheurverbod van blijvend grasland in Natura 2000-gebieden : Springendal & Dal van de Mosbeek en Rijnstrangen
Gies, Edo ; Wamelink, Wieger ; Kistenkas, Fred ; Kros, Hans ; Doorn, Anne van - \ 2018
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2864) - 49
Since 1st January 2015, as part of the greening of the European common agricultural policy (CAP) a ban has been put on ploughing of permanent grassland in Natura2000 areas. The objective of thismeasure is to protect biodiversity within Natura2000 areas and conserve soils rich in carbon. Theagricultural sector of the Natura2000 areas Springendal & Dal van de Mosbeek and Rijnstrangen (part of Natura2000 area Rijntakken) has requested an exemption from this ban. In this study the ecological effects of the exemption of the ban on ploughing of permanent grassland are assessed.
Praktijkonderzoek bioraffinage
Doorn, Wim van; Baars, J.J.P. ; Dam, J.E.G. van; Keijsers, E.R.P. ; Yilmaz, G. - \ 2018
Amersfoort : Stichting Toegepast Onderzoek Waterbeheer (STOWA rapport 2018-25) - ISBN 9789057737930 - 59
waterbeheer - bioraffinage - materialen uit biologische grondstoffen - biomassa - waterplanten - reststromen - water management - biorefinery - biobased materials - biomass - aquatic plants - residual streams
Waterschappen en andere waterbeheerders zien dat de laatste jaren in toenemende mate inspanningen nodig zijn om problemen door uitheemse en/of invasieve plantensoorten in het waterbeheer te beheersen. Echte oplossingen zijn nog steeds niet beschikbaar. Tegelijkertijd werken de waterschappen samen met andere gebiedsbeheerders en ketenpartners aan verduurzaming van het waterbeheer, onder meer door bij te dragen aan een meer circulaire economie, en aan realisatie van de Kader Richtlijn Water doelstellingen. In dit project is onderzocht hoe bioraffinage kan bijdragen aan deze verduurzaming, door het produceren van diverse nuttige grondstoffen uit groenresten van het waterbeheer. Daarbij lag de nadruk op het verwaarden van woekerende waterplanten en oevermaaisels via kleinschalige, mobiele bioraffinage. Daarbij worden op de plaats ter waar maaisels vrijkomen via een bioraffinage machine de planten opgewerkt tot diverse producten, zoals eiwitten (voor diervoer of technische toepassingen), vezels (voor diervoeder, papier/karton of biocomposiet), mineralenconcentraat (meststof) en eventueel substraat voor vergisting tot biogas. Loosbaar water is wat overblijft en terug kan naar het aquatisch milieu.
Strand Plasticity Governs Fatigue in Colloidal Gels
Doorn, Jan Maarten van; Verweij, Joanne E. ; Sprakel, Joris ; Gucht, Jasper van der - \ 2018
Physical Review Letters 120 (2018)20. - ISSN 0031-9007

The repeated loading of a solid leads to microstructural damage that ultimately results in catastrophic material failure. While posing a major threat to the stability of virtually all materials, the microscopic origins of fatigue, especially for soft solids, remain elusive. Here we explore fatigue in colloidal gels as prototypical inhomogeneous soft solids by combining experiments and computer simulations. Our results reveal how mechanical loading leads to irreversible strand stretching, which builds slack into the network that softens the solid at small strains and causes strain hardening at larger deformations. We thus find that microscopic plasticity governs fatigue at much larger scales. This gives rise to a new picture of fatigue in soft thermal solids and calls for new theoretical descriptions of soft gel mechanics in which local plasticity is taken into account.

Effects of a multi-component nutritional telemonitoring intervention on nutritional status, diet quality, physical functioning and quality of life of community-dwelling older adults
Doorn-van Atten, M.N. van; Haveman-Nies, A. ; Bakel, M.M. van; Ferry, M. ; Franco, M. ; Groot, C.P.G.M. de; Vries, J.H.M. de - \ 2018
The British journal of nutrition 119 (2018)10. - ISSN 0007-1145 - p. 1185 - 1194.
This study aimed to evaluate the effects of an intervention including nutritional telemonitoring, nutrition education, and follow-up by a nurse on nutritional status, diet quality, appetite, physical functioning and quality of life of Dutch community-dwelling elderly. We used a parallel arm pre-test post-test design with 214 older adults (average age 80 years) who were allocated to the intervention group (n 97) or control group (n 107), based on the municipality. The intervention group received a 6-month intervention including telemonitoring measurements, nutrition education and follow-up by a nurse. Effect measurements took place at baseline, after 4·5 months, and at the end of the study. The intervention improved nutritional status of participants at risk of undernutrition (β (T1)=2·55; 95 % CI 1·41, 3·68; β (T2)=1·77; 95 % CI 0·60, 2·94) and scores for compliance with Dutch guidelines for the intake of vegetables (β=1·27; 95 % CI 0·49, 2·05), fruit (β=1·24; 95 % CI 0·60, 1·88), dietary fibre (β=1·13; 95 % CI 0·70, 1·57), protein (β=1·20; 95 % CI 0·15, 2·24) and physical activity (β=2·13; 95 % CI 0·98, 3·29). The intervention did not have an effect on body weight, appetite, physical functioning and quality of life. In conclusion, this intervention leads to improved nutritional status in older adults at risk of undernutrition, and to improved diet quality and physical activity levels of community-dwelling elderly. Future studies with a longer duration should focus on older adults at higher risk of undernutrition than this study population to investigate whether the impact of the intervention on nutritional and functional outcomes can be improved.
Targeted payments for services delivered by farmers : possible approaches
Berkhout, Petra ; Doorn, Anne van; Schrijver, Raymond - \ 2018
Wageningen : Wageningen Economic Research (Wageningen Economic Research repport 2018-052) - ISBN 9789463437868 - 33
This report explores options within the Common Agricultural Policy to strengthen payments to farmers for delivering public services related to land management, with a focus on environmental services. It also discusses the advantages and disadvantages of different systems in terms of compliance with WTO and EU legal conditions, the administrative burden (both public and private), monitoring and control and uptake by farmers.
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