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41 results on '"Hogenelst, Koen"'

5. Monitoring Mental State During Real Life Office Work

Author

Brouwer, Anne-Marie, van de Water, Loïs, Hogervorst, Maarten, Kraaij, Wessel, Schraagen, Jan Maarten, Hogenelst, Koen, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Ham, Jaap, editor, Spagnolli, Anna, editor, Blankertz, Benjamin, editor, Gamberini, Luciano, editor, and Jacucci, Giulio, editor

Published
2018
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10. Understanding the effects of sleep deprivation and acute social stress on cognitive performance using a comprehensive approach

Author

Bottenheft, Charelle, Stuldreher, Ivo, Hogenelst, Koen, Groen, Eric, van Erp, Jan B.F., Kleemann, Robert, Brouwer, Anne-Marie, Spink, Andrew, Barski, Jarosław, Riedel, Gernot, Sil, Annesha, Human Media Interaction, and Digital Society Institute

Abstract

Different professionals (e.g. in the military) have to perform cognitive challenging tasks in multi-stressor environments. However, our understanding how combined stressors interact and affect cognitive performance is limited (Van Dongen & Belenky, 2009). This study examined how sleep deprivation (SD) and acute social stress affect cognitive performance in isolation and in combination, and used a comprehensive approach to find evidence for a (shared) mechanism. Recent research suggests that SD leads to higher amounts of proinflammatory markers (i.e. cytokines) in the blood, which assumedly contribute to a decline in cognitive performance (Irwin, 2019; Shields et al., 2017). In addition, acute social stressors have also been shown to elicit an immune response, as reflected by circulating cytokines in blood (Marsland et al., 2017; Prather et al., 2014). These findings suggest that different stressors may affect cognitive performance through an effect on the immune system. We therefore hypothesize that individuals showing a high proinflammatory response to a combination of two stressors (SD and acute social stress) are more vulnerable to cognitive decline compared to individuals showing a lower proinflammatory response. To test this hypothesis, we measured not only cognitive performance, but also the physiological response and biochemical determinants of metabolism and inflammation at baseline and after SD, but also in response to an acute social stressor (Tkacheenko & Dinges, 2018).

Published
2022

17. Acceptance of personalised nutrition & health by consumers : Consumer study report results

Author

Reinders, Machiel, Onwezen, Marleen, Hoes, Anne-Charlotte, Hogenelst, Koen, Pasman, Wilrike, Savelkouls, Carlijn, Verain, Muriel, and Verstegen, Jos

Subjects
Datawetenschap, Informatiemanagement & Projectmanagement Organisatie, Life Science, WASS, Data Science, Information Management & Projectmanagement Organisation, Consument & Keten, Innovation- and Risk Management and Information Governance, Consumer and Chain
Published
2020

22. Beneficial effect of personalized lifestyle advice compared to generic advice on wellbeing among Dutch seniors – An explorative study

Author

Doets, Esmée L., primary, de Hoogh, Iris M., additional, Holthuysen, Nancy, additional, Wopereis, Suzan, additional, Verain, Muriel C.D., additional, van den Puttelaar, Jos, additional, Hogenelst, Koen, additional, Boorsma, André, additional, Bouwman, Emily P., additional, Timmer, Marielle, additional, Pasman, Wilrike J., additional, van Erk, Marjan, additional, and Reinders, Machiel J., additional

Published
2019
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24. Increasing dietary fibre intake in healthy adults using personalised dietary advice compared with general advice: a single-blind randomised controlled trial.

Author

Rijnaarts, Iris, de Roos, Nicole M, Wang, Taojun, Zoetendal, Erwin G, Top, Jan, Timmer, Marielle, Bouwman, Emily P, Hogenelst, Koen, Witteman, Ben, and de Wit, Nicole

Subjects
DIETARY fiber, RANDOMIZED controlled trials, FIBERS, ADVICE, ADULTS, HEALTH education, RESEARCH, COUNSELING, RESEARCH methodology, INGESTION, MEDICAL cooperation, EVALUATION research, COMPARATIVE studies, BLIND experiment
Abstract

Objective: A high-fibre diet is associated with a lower risk for diseases. However, few adults meet the dietary fibre recommendation. Therefore, the effects and acceptance of an algorithm-generated personalised dietary advice (PDA) compared with general advice (GA) on fibre intake were investigated.Design: A 6-week, single-blind randomised controlled trial with a 3-month follow-up.Setting: PDA was based on habitual intake and provided fibre-rich alternatives using a website; GA contained brochures. Dietary intake was assessed at baseline, week 1, week 6 and 3-month follow-up. Both groups evaluated their advice at week 6. All participants had access to PDA from week 7 until 3-month follow-up.Participants: Two groups of healthy adults: PDA (n 34) and GA (n 47). For 3-month follow-up analysis, participants were re-divided into visitors (n 52) and non-visitors (n 26) of the PDA.Results: At week 6, energy intake remained stable in both groups, but fibre intake per 1000 kcal increased non-significantly in both groups (PDA = Δ0·5 ± 2·8; GA = Δ0·8 ± 3·1, P = 0·128). Importantly, a significantly higher percentage of PDA participants adhered to the recommendation compared with week 1 (PDA = 21 % increase; GA = 4 % increase, P ≤ 0·001). PDA participants evaluated the advice significantly better compared with GA participants. At 3-month follow-up, fibre intake increased compared with baseline (visitors = Δ2·2 ± 2·6, P < 0·001; non-visitors = Δ1·5 ± 1·9, P = 0·001), but was insignificantly different between groups. Visitors had a decrease and non-visitors had an increase in energy intake (visitors =Δ - 132 ± 525; non-visitors = Δ109 ± 507, P = 0·055).Conclusions: The algorithm-generated PDA was well accepted and stimulated adherence to the recommendations more than GA, indicating to be a suitable and cost-efficient method for improving dietary fibre intake in healthy adults. [ABSTRACT FROM AUTHOR]

Published
2021
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26. Linking the non-visual effects of light exposure with occupational health

Author

Price, Luke L A, primary, Udovičić, Ljiljana, additional, Behrens, Thomas, additional, van Drongelen, Alwin, additional, Garde, Anne Helene, additional, Hogenelst, Koen, additional, Jensen, Marie Aarrebo, additional, Khazova, Marina, additional, Nowak, Kamila, additional, Rabstein, Sylvia, additional, Romanus, Erik, additional, and Wolska, Agnieszka, additional

Published
2019
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30. Systems biology of personalized nutrition

Author

van Ommen, Ben, primary, van den Broek, Tim, additional, de Hoogh, Iris, additional, van Erk, Marjan, additional, van Someren, Eugene, additional, Rouhani-Rankouhi, Tanja, additional, Anthony, Joshua C, additional, Hogenelst, Koen, additional, Pasman, Wilrike, additional, Boorsma, André, additional, and Wopereis, Suzan, additional

Published
2017
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31. Serotonin manipulations and social behavior: Studies in individuals at familial risk for depression

Author

Hogenelst, Koen, de Jong, Peter, Schoevers, Robert, aan het Rot, Marije, and Clinical Psychology and Experimental Psychopathology

Abstract

Interactions with others affect our mood, and vice versa. Unsurprisingly, people with a mood disorder such as depression often have difficulties in their social relationships. Depression is often thought to be associated with a decreased availability of serotonin, a signaling molecule in the brain which enables the processing of social and emotional information. Therefore a decreased availability of serotonin could also have an adverse effect on social behavior and mood during interactions with others. However, Hogenelst and colleagues showed that a temporary decrease of serotonin (over several hours) has little impact on mood or social behavior as measured in the lab. The results were similar in study participants with and without an elevated depression risk. In a second study in people with an elevated depression risk, the researchers increased the availability of serotonin over several days. They examined the effects on mood and social behavior in everyday life. As expected, mood improved. Unexpectedly, however, the participants also became less friendly. This behavioral effect was only seen during interactions at home. It is possible that, when serotonin availability was increased, participants stood up for themselves more. This in line with the idea that people prone to depression experience little control over their social lives. As most medications for depression aim to increase the availability of serotonin, an important next question is how these medications affect the social behavior of depressed people.

Published
2016

32. Serotonin manipulations and social behavior:Studies in individuals at familial risk for depression

Author

Hogenelst, Koen and Hogenelst, Koen

Abstract

Interactions with others affect our mood, and vice versa. Unsurprisingly, people with a mood disorder such as depression often have difficulties in their social relationships. Depression is often thought to be associated with a decreased availability of serotonin, a signaling molecule in the brain which enables the processing of social and emotional information. Therefore a decreased availability of serotonin could also have an adverse effect on social behavior and mood during interactions with others. However, Hogenelst and colleagues showed that a temporary decrease of serotonin (over several hours) has little impact on mood or social behavior as measured in the lab. The results were similar in study participants with and without an elevated depression risk. In a second study in people with an elevated depression risk, the researchers increased the availability of serotonin over several days. They examined the effects on mood and social behavior in everyday life. As expected, mood improved. Unexpectedly, however, the participants also became less friendly. This behavioral effect was only seen during interactions at home. It is possible that, when serotonin availability was increased, participants stood up for themselves more. This in line with the idea that people prone to depression experience little control over their social lives. As most medications for depression aim to increase the availability of serotonin, an important next question is how these medications affect the social behavior of depressed people.

Published
2016

40. Effects of Tryptophan on Everyday Interpersonal Encounters and Social Cognitions in Individuals with a Family History of Depression.

Author

Hogenelst, Koen, Schoevers, Robert A., and aan het Rot, Marije

Subjects
TRYPTOPHAN, FAMILY history (Medicine), SOCIAL perception, MENTAL depression, SOCIAL skills
Abstract

Background: Individuals with a family history of depression show subtle abnormalities in the processing of social stimuli. This could negatively affect their interpersonal functioning and contribute to their depression risk. Repeated administration of the serotonin precursor tryptophan has previously been shown to increase agreeable behavior and reduce quarrelsome behavior in irritable people, who are also considered at risk for depression. Methods: To examine the effects of tryptophan on social functioning in individuals with a family history of depression, 40 men and women with at least one first-degree relative with depression received tryptophan (1g three times a day) and placebo for 14 days each in a double-blind crossover design and recorded their social behavior and mood during everyday interpersonal encounters. Participants also provided daily ratings of their positive and negative cognitions concerning their social functioning. Results: Tryptophan improved mood. Unexpectedly, tryptophan increased quarrelsome behavior and reduced agreeable behavior, specifically during interactions at home. The behavioral effects of tryptophan were not moderated by mood or by the interaction partner. Negative social cognitions were lower when tryptophan was given second and lower during placebo when placebo was given second. Conclusion: Overall, tryptophan may not alter social behavior in individuals with a family history of depression as it does in irritable people. However, the behavioral effects of tryptophan at home might be seen as a way for individuals with a family history of depression to achieve more control. Over time, this may positively influence the way they feel and think about themselves in a social context. [ABSTRACT FROM AUTHOR]

Published
2015
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