Projects per year
Personal profile
Research interests
Malnutrition; nutritional assessment; frailty
Education/Academic qualification
Doctor of Philosophy, Pre- and post-treatment malnutrition in head and neck cancer patients, University of Groningen, University Medical Center Groningen, Department of Oral and Maxillofacial Surgery
Award Date: 8 Sept 2010
External positions
Honorary Fellow, Vrije Universiteit Brussel, Research Group Experimental Anatomy
Jun 2021 → …
Guest Professor, Vrije Universiteit Brussel, Research Group Experimental Anatomy
Apr 2021 → 2025
Movement and Rehabilitation Fellow, Vrije Universiteit Brussel, Research Group Experimental Anatomy
Jun 2018 → Jun 2021
Senior researcher, University of Groningen, University Medical Center Groningen, Department of Oral and Maxillofacial Surgery
2004 → …
Research Focus Areas Research Centre or Centre of Expertise * (mandatory by Hanze)
- Frailty and adequate care
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Collaborations and top research areas from the last five years
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NUBUS: Nutritional practice among patients with burns
Bosch, F. G. (CoI), Jager-Wittenaar, H. (PI), Nieuwenhuis, M. K. (PI) & van der Schans, C. (PI)
1/03/22 → …
Project: PHD Research
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Body composition analysis: validity and reliability of muscle assessment methods
Jager-Wittenaar, H. (PI) & Scafoglieri, A. (PI)
21/06/18 → …
Project: Research
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Association between low muscle mass and early termination of chemotherapy treatment in patients with head and neck cancer
Sealy, M. (CoI), Dechaphunkul, T. (CoI), van der Schans, C. (CoI), Krijnen, W. (CoI), Roodenburg, J. (CoI), Walker, J. (CoI), Jager-Wittenaar, H. (CoI) & Baracos, V. (PI)
1/01/15 → …
Project: Research
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Monitoren eten en drinken in het ziekenhuis. Een onderzoek naar de bijdrage van technologische- en proces innovaties aan persoonsgerichte monitoring van voeding en vocht
Nieboer, M. (PI), Zijpp, T. (CoPI), Jager-Wittenaar, H. (CoI), van Zaalen, Y. (CoI), Delvaux, E. (CoI), Peters, P. J. F. (CoI), Janssen, E. (CoI), Metz, S. (CoI), de van der Schueren, M. (CoI) & van der Meij, B. (CoI)
1/05/22 → 30/04/24
Project: Research
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Comprehensive Needs Assessment for Enhancing Self-Management in People with Lipoedema and the Support Provided by Their Healthcare Professionals
Kloosterman, L. M., Jager-Wittenaar, H., Schneider, F., Hendrickx, A., Dekker, R. & Scafoglieri, A., 27 Feb 2025, In: Journal of Multidisciplinary Healthcare. 2025, 18, p. 1217-1230 14 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access -
More than meets the eye: phenomenological insights into the functioning of people with lipoedema
Kloosterman, L. M., Eilers, R., Scafoglieri, A., Hendrickx, A., Dekker, R. & Jager-Wittenaar, H., 20 Feb 2025, In: International Journal of Qualitative Studies on Health and Well-being. 20, 1Research output: Contribution to journal › Article › Academic › peer-review
Open Access -
Perceptions, barriers and facilitators regarding nutritional care for patients with chronic limb threatening ischemia: a focus group study among healthcare professionals
Kolen, A. M., Jager-Wittenaar, H., Geertzen, J. H. B., Damman, J., Dijkstra, M. L., Keller, B. P. J. A., Kooijman, M., Tjalsma-de Vries, M., de Vries, J.-P. P. M., Wikkeling, O. R. M., Wong, S. W., Dekker, R. & Krops, L. A., Jan 2025, In: Annals of Vascular Surgery. 110, Part B, p. 84-94 11 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access -
The challenges of evidence-based prehabilitation in a real-life context for patients preparing for colorectal surgery - a cohort study and multiple case analysis
Talen, D. (First author), Meeteren, van, N. (. U. )., Barten, D.-J., Pereboom, I., Krijnen, W., Jager-Wittenaar, H., Bongers, B. & van der Sluis, G., 17 Jan 2025, In: Perioperative Medicine. 14, 1, p. 7 7.Research output: Contribution to journal › Article › Academic › peer-review
Open Access -
Understanding frailty experiences in Dutch community-dwelling older people: A qualitative phenomenological study
Golbach, R., Kleinenberg, N., Jager-Wittenaar, H., Hobbelen, J. & Finnema, E., 1 May 2025, In: Journal of Aging Studies. 73, 7 p.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile9 Downloads (Pure)
Activities
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Impact of the global COVID-19 pandemic on the nutritional status of older adults
Jager-Wittenaar, H. (Speaker)
12 Feb 2021Activity: Talk or presentation › Invited talk
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Monitoring van de dieetbehandeling bij de oncologische patiënt: een praktische en multidisciplinaire aanpak
Jager-Wittenaar, H. (Speaker)
27 May 2021Activity: Talk or presentation › Invited talk
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Tackling Malnutrition: impact and nutritional solutions later in life
Jager-Wittenaar, H. (Examiner)
9 Sept 2021Activity: Examination
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Clinical nutrition for cancer patients: the dietitian perspective
Jager-Wittenaar, H. (Speaker)
22 Feb 2021Activity: Talk or presentation › Invited talk
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Impact of the global COVID-19 pandemic on the nutritional status of older adults
Jager-Wittenaar, H. (Speaker)
12 May 2021 → 15 May 2021Activity: Talk or presentation › Invited talk
Press/Media
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Diëtist Harriët Jager-Wittenaar benoemd tot bijzonder hoogleraar
30/06/23
1 item of Media coverage
Press/Media: Research
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Helft risicopatiënten kampt bij intake diëtist met zware ondervoeding. Onderzoeker Hanzehogeschool Groningen: 'Echt shocking'
11/04/23
1 item of Media coverage
Press/Media: Expert Comment