A randomised controlled intervention trial to study the effect of a personalised lifestyle programme on cancer-related fatigue among colorectal cancer survivors: protocol for the SoFiT study.

Observational studies suggest that a healthy diet in combination with ample physical activity is associated with a lower prevalence of cancer-related fatigue. The SoFiT trial (SoFiT: Study on Fatigue: a lifestyle intervention among colorectal cancer survivors) will assess the effect of a personalised lifestyle programme on cancer-related fatigue in a randomised study. We designed a programme that aims to increase adherence to lifestyle recommendations on diet and physical activity. The programme was person-centred with regard to the lifestyle and personal characteristics of participants, to the determinants of behaviour of that participant, and to the preferences, opportunities and barriers of the participant. The effect of the programme was tested in the SoFiT trial: a two-armed, parallel, randomised controlled trial among adult stage I-III colorectal cancer survivors, who experience cancer-related fatigue after treatment completion; intended sample size n=184. Participants randomised to the intervention group received the personalised lifestyle programme. During 6 months, participants in the intervention group had individual sessions with a lifestyle coach of which four sessions were face-to-face and eight sessions were remote. After 6 months, participants randomised to the control group had access to two lifestyle coaching sessions and to the same materials that the intervention group also received. The primary endpoint of the trial is cancer-related fatigue. Secondary endpoints are sleep quality and duration, health-related quality of life, physical performance, depression and anxiety, skeletal muscle echo intensity and cross-sectional area, and gut microbiota composition. This trial will show the effects of a personalised lifestyle programme on cancer-related fatigue and on an extensive set of secondary outcomes. Clinicaltrials.gov: NCT05390398.

Experts' perceptions on motivators and barriers of healthy and sustainable dietary behaviors among adolescents: The SWITCH project.

The interplay of influences shaping dietary behaviors of adolescents needs to be well-understood to develop effective strategies stimulating healthy and sustainable behaviors. This study aimed to identify the most relevant, urgent, changeable and effective motivators and barriers of healthy and sustainable dietary behaviors among adolescents (10-19 years), as perceived by an inter- and transdisciplinary expert panel. Experts working in practice (N = 19) and academia (N = 13) - in the field of sustainability, health, nutrition and/or education - participated in this exploratory mixed-methods study. Five online semi-structured focus groups were conducted (6-7 participants). Data was thematically analyzed by two coders independently, using the socioecological framework. Subsequently, the same experts individually selected the five most relevant determinants and rated those on their urgency, changeability and effectiveness through an online questionnaire (N = 21). Participants revealed a wide system of 31 main determinants including 173 sub-determinants that motivate or hinder healthy and sustainable eating among adolescents. This system of determinants was mapped on the different layers of the socioecological model: individual factors (25 motivators; 30 barriers), social environments (15 motivators; 13 barriers), physical environments (18 motivators; 15 barriers), macro-level environments (19 motivators; 38 barriers). 'Role of peers' (social environment) was selected most as a determinant to be targeted in interventions (N = 13; urgency (M = 6.38) changeability (M = 3.85), effectiveness (M = 5.62)), followed by 'food environment around school' (N = 9; urgency (M = 5.78) changeability (M = 3.44), effectiveness (M = 5.44)), 'social influences' (N = 7; urgency (M = 5.43) changeability (M = 4.00), effectiveness (M = 5.71)), 'autonomy in development' (N = 7; urgency (M = 6.00) changeability (M = 4.29), effectiveness (M = 5.86)) and 'food availability' (N = 7; urgency (M = 6.29) changeability (M = 3.29), effectiveness (M = 6.29)). The prioritized determinants indicate that adolescents should be provided more supportive social and physical environments that promote healthy and sustainable dietary behaviors, taking into account their growing autonomy.

Behaviour change techniques used in lifestyle interventions that aim to reduce cancer-related fatigue in cancer survivors: a systematic review.

BACKGROUND: Lifestyle interventions that target dietary and/or physical activity behaviours may impact cancer-related fatigue in cancer survivors. Changing lifestyle may be especially difficult for cancer survivors suffering from cancer-related fatigue. To increase effectiveness of lifestyle interventions, behaviour change techniques (BCTs) can be applied. The aim of this review is to systematically describe which BCTs are applied in lifestyle interventions targeting cancer-related fatigue among cancer survivors who finished primary treatment. METHODS: PubMed, Scopus, PsycINFO, Cochrane Library and Web of Science were searched to identify randomised controlled trials (RCTs) of dietary and/or physical activity interventions targeting cancer-related fatigue in cancer survivors. The BCT taxonomy was used to code the BCTs that were applied in those interventions. BCTs that were reported in at least 25% of effective interventions were indicated as 'promising BCT', but only retained this classification when these BCTs were present in less than 25% of ineffective interventions. RESULTS: Twenty-nine RCTs were identified, of which 17 were effective in reducing cancer-related fatigue. The most frequently applied BCTs were Goal setting (behaviour), Instruction on how to perform the behaviour, Demonstration of the behaviour, Behavioural practice/rehearsal, and Credible Source. The BCT 'Generalisation of the target behaviour' was identified as promising. These results should be interpreted with caution as only three studies screened their participants on level of cancer-related fatigue and most studies focused only on physical activity. Furthermore, many studies did not include a measure for actual behaviour change and had no follow-up period after the intervention ended. CONCLUSIONS: There is a need for studies that screen their participants on level of cancer-related fatigue and a need for studies that focus more on dietary behaviours as a possible intervention to reduce fatigue. Also, studies should include follow-up timepoints after the interventions ends to examine long-term behaviour change. Future lifestyle interventions should describe interventions in detail to allow for easier coding of BCTs, and report on actual behaviour change following the intervention. Interventions may apply the BCT 'Generalisation of the target behaviour' to incorporate lifestyle behaviours in daily life. This may increase the chance that interventions will effectively reduce cancer-related fatigue.

Mediation of emotional and external eating between dieting and food intake or BMI gain in women.

OBJECTIVE: Dieting to control body weight is often associated with weight gain, particularly so in women; however, the underlying mechanisms are unclear. In a series of studies on women, we examined whether the relationship between dieting and weight gain can be explained by (serial) mediation of emotional eating (EE) and/or subsequent external eating (EX). METHODS: In a pilot study (116 women), we first assessed this (serial) mediation between dieting or dietary restraint and actual food consumption in the laboratory. In Study 1, a four-year follow up on patients with newly diagnosed type 2 diabetes (51 women), we assessed this (serial) mediation between dietary restraint and change in BMI and intake of energy (Kcal; Food Frequency Questionnaire). In Study 2, a three-year follow up study in a representative Dutch sample (287 women), we assessed this (serial) mediation between dieting and change in BMI. RESULTS: There was consistent support for (serial) mediation: In the pilot study, frequency of dieting and dietary restraint were both indirectly associated with grams of crackers eaten through EE and EX. In study 1, dietary restraint had a significant (95% CI) indirect association with subsequent change in measured BMI and a marginally (90% CI) significant indirect association with intake of energy through EE and EX. In study 2, EE marginally (90% CI) acted as a mediator between frequency of dieting and subsequent self-reported change in BMI. In the subsample of overweight women (n = 146) frequency of dieting was indirectly associated with subsequent self-reported change in BMI through EE and EX. CONCLUSION: The possibility that female dieters may gain weight through EE and/or subsequent EX should be taken into account when treating women with overweight or obesity.

Duration of breastfeeding is associated with emotional eating through its effect on alexithymia in boys, but not girls.

Emotional eating (EE), or eating in response to negative emotions, was earlier shown to be associated with difficulty in identifying emotions (alexithymia). To improve our understanding of possible causes of alexithymia and EE, we assessed possible associations with duration of breastfeeding in infancy. The aim of the present study was to examine in a prospective, longitudinal study whether duration of breastfeeding is associated with EE in adolescence, through its effect on alexithymia difficulty identifying emotions, and whether this mediation effect is contingent on gender. Our hypothesis was that longer duration of breastfeeding would be associated with lower EE in adolescence through its effect on lower alexithymia difficulty identifying feelings in boys but not in girls (Moderated mediation). The sample included 129 children and their families (67 boys and 62 girls). Duration of breastfeeding was reported by the mother when the infant was 15 months old. Alexithymia difficulty identifying feelings (Toronto Alexithymia Scale) and EE (Dutch Eating Behavior Questionnaire) were reported by the child at 12 years of age. EE was also reported by the child at 16 years of age. Moderated mediation was significant for EE at 12 years, and borderline significant for EE at 16 years. As hypothesized, for boys but not for girls, longer duration of breastfeeding was related to less difficulties in identifying feelings, resulting in lower degrees of EE in adolescence. It is concluded that breastfeeding in infancy may protect boys against EE through its positive association with better ability to identify feelings.

Parenting quality in infancy and emotional eating in adolescence: Mediation through emotion suppression and alexithymia.

This study assessed the association between parenting quality at age 15 and 28 months and emotional eating (EE) at age 12 and 16 years through serial mediation by suppression of emotions and alexithymia at 12 years. The sample included 129 children and their parents. Lower parental quality in infancy was related to more suppression of emotions, which in turn was related to more difficulty identifying emotions, and in turn to higher EE in adolescence. This serial mediation model was significant for EE at 12 years, and for EE at 16 years. If future studies reveal converging findings, this knowledge points to the need for programs preventing the development of EE in adolescence through increasing the quality of parenting in infancy.

Emotional eating as a mediator between depression and weight gain.

Depression is often associated with weight gain but underlying mechanisms are unclear. This study assessed whether three psychological eating styles (emotional eating, external eating and restrained eating) act as mediators between depression and weight gain. We used structural equation modelling to test the hypothesized mediation models in a sample of 298 fathers and 294 mothers by assessing self-reported eating styles (Dutch Eating Behavior Questionnaire), depressive feelings (Depressive Mood List) and body mass index (BMI) at baseline and BMI after five years. In the model with emotional eating we also assessed the moderation effect of 5-HTTLPR genotype in a sub-sample of 520 Caucasians. All analyses were performed separately for the two sexes. Although the overall effect of depression on weight gain was statistically non-significant in both sexes, there was a causal chain between depression, emotional eating and weight gain in the mothers. Depressive symptoms were related to higher emotional eating and emotional eating predicted greater increases in BMI independently of depression. Moreover, the indirect effect (via emotional eating) of depression on BMI change was significant (Beta = 0.18, P = 0.026). This mediation effect was found to be independent of 5-HTTLPR genotype. No such mediation effect was found for the fathers. Further, external eating and restrained eating did not act as mediators between depression and weight gain in either sex. The finding that emotional eating acted as mediator between depression and weight gain in the mothers suggests that obesity interventions should take emotional eating into account.

Design Features Associated With Engagement in Mobile Health Physical Activity Interventions Among Youth: Systematic Review of Qualitative and Quantitative Studies.

BACKGROUND: Globally, 81% of youth do not meet the physical activity (PA) guidelines. Youth of families with a low socioeconomic position are less likely to meet the recommended PA guidelines. Mobile health (mHealth) interventions are preferred by youth over traditional in-person approaches and are in line with their media preferences. Despite the promise of mHealth interventions in promoting PA, a common challenge is to engage users in the long term or effectively. Earlier reviews highlighted the association of different design features (eg, notifications and rewards) with engagement among adults. However, little is known about which design features are important for increasing engagement among youth. OBJECTIVE: To inform the design process of future mHealth tools, it is important to investigate the design features that can yield effective user engagement. This systematic review aimed to identify which design features are associated with engagement in mHealth PA interventions among youth who were aged between 4 and 18 years. METHODS: A systematic search was conducted in EBSCOhost (MEDLINE, APA PsycINFO, and Psychology & Behavioral Sciences Collection) and Scopus. Qualitative and quantitative studies were included if they documented design features associated with engagement. Design features and related behavior change techniques and engagement measures were extracted. Study quality was assessed according to the Mixed Method Assessment Tool, and one-third of all screening and data extraction were double coded by a second reviewer. RESULTS: Studies (n=21) showed that various features were associated with engagement, such as a clear interface, rewards, multiplayer game mode, social interaction, variety of challenges with personalized difficulty level, self-monitoring, and variety of customization options among others, including self-set goals, personalized feedback, progress, and a narrative. In contrast, various features need to be carefully considered while designing mHealth PA interventions, such as sounds, competition, instructions, notifications, virtual maps, or self-monitoring, facilitated by manual input. In addition, technical functionality can be considered as a prerequisite for engagement. Research addressing youth from low socioeconomic position families is very limited with regard to engagement in mHealth apps. CONCLUSIONS: Mismatches between different design features in terms of target group, study design, and content translation from behavior change techniques to design features are highlighted and set up in a design guideline and future research agenda. TRIAL REGISTRATION: PROSPERO CRD42021254989; https://tinyurl.com/5n6ppz24.

Relative Validity of the HELIUS Food Frequency Questionnaire for Measuring Dietary Intake in Older Adult Participants of the Longitudinal Aging Study Amsterdam.

The aim of this study was to determine the relative validity of the HEalthy LIfe in an Urban Setting (HELIUS) food frequency questionnaire (FFQ) in assessing the dietary intake of energy, nutrients, and food groups of Dutch older men and women. In 2014-2015, 88 participants of the Longitudinal Aging Study Amsterdam aged 71.9 (SD 8.6) years completed the 238-item HELIUS FFQ and three 24-hour dietary recalls. The mean group-level bias in the intakes of energy, nutrients, and food groups between the two methods was assessed, as well as Pearson's correlation coefficients and level of agreement using quintile distribution. For the intakes of energy and macronutrients, the group-level bias was ≤5%, Pearson's correlation coefficients were moderate to good (ranging from 0.26 for total fat to 0.72 for alcohol), and agreement was moderate to high (classification in same or adjacent quintile ranging from 63% for energy, protein, and carbohydrate to 91% for alcohol). For most micronutrients and food groups, the relative validity was moderate (Pearson's correlation coefficients between 0.3 and 0.5), with the lowest correlations for ß-carotene (0.08), vitamin B1 (0.19), fish (0.14), and grains (0.24). In conclusion, for energy and macronutrients, most micronutrients, and most food groups, the relative validity of the HELIUS FFQ to assess dietary intake in Dutch older adults was acceptable to good.

Is comfort food actually comforting for emotional eaters? A (moderated) mediation analysis.

An important but unreplicated earlier finding on comfort eating was that the association between food intake and immediate mood improvement appeared to be mediated by the palatability of the food, and that this effect was more pronounced for high than for low emotional eaters [26]. This has not yet been formally tested using mediation and moderated mediation analysis. We conducted these analyses using data from two experiments on non-obese female students (n = 29 and n = 74). Mood and eating satisfaction in Study 1, and mood, tastiness and emotional eating in Study 2 were all self-reported. In Study 1, using a sad mood induction procedure, emotional eaters ate more food, and when mood was assessed immediately after food intake, 'eating satisfaction' acted as mediator between food intake and mood improvement (decrease in sadness or increase in happiness). In Study 2, where we measured the difference in actual food intake after a control or a stress task (modified Trier Social Stress Test), and assessed mood during the food intake after stress, we found significant moderated mediation. As expected, there was a significant positive mediation effect of tastiness between food intake and mood improvement in the high emotional eaters, but also a significant negative mediation effect of tastiness between food intake and mood improvement in the low emotional eaters. This suggests that tastiness promotes 'comfort' from food in female emotional eaters, but conflicts in non-emotional eaters with a tendency to eat less when stressed. In conclusion, palatable food may indeed provide comfort specifically for high emotional eaters during eating.

Associations of depressive symptoms and history with three a priori diet quality indices in middle-aged and older adults.

BACKGROUND: Evidence for the diet-depression link is growing but longitudinal studies on the reverse association are scarce. We investigated associations of (1) current depressive symptoms, (2) short-term changes in and (3) long-term history of depressive symptoms with three a priori diet quality indices. METHODS: Data were from participants (≥ 55 years) of the Longitudinal Aging Study Amsterdam (LASA). The Mediterranean Diet Score (MDS), Alternative Healthy Eating Index (AHEI-2010) and Dietary Approaches to Stop Hypertension diet (DASH) were derived in 2014/2015. Depressive symptoms (Center for Epidemiologic Studies Depression scale; CES-D) were assessed in 2014/2015 and at five regular 3-yearly cycles from 2001-2003 to 2015/2016. Associations between three depression determinants and the diet indices were analysed by multivariable linear regression models. RESULTS: Cross-sectionally (n = 1312), current depressive symptoms (CES-D ≥ 16) were associated with lower MDS (adjusted B = -1.21, 95%CI = -2.41, -0.023) and AHEI (B = -2.72, 95%CI = -5.24, -0.20) scores in men only. Chronic/recurrent depressive symptoms (CES-D ≥ 16 in both 2011-2013 and 2015/2016) were associated with lower MDS scores (n = 1233; B = -2.22, 95%CI = -3.40, -1.04) and a trend for lower AHEI scores (B = -2.37, 95%CI = -4.92, 0.18), compared to no depressive symptoms (twice CES-D < 16). History of depressive symptoms (ever CES-D ≥ 16 from 2001-2003 to 2011-2013; n = 687) was associated with lower MDS (B = -1.87, 95%CI = -3.47, -0.27) and AHEI (B = -4.33, 95%CI = -7.54, -1.13) scores in men only. No associations were found with the DASH score. LIMITATIONS: Single dietary data collection impeded investigation of prospective depression-diet associations. CONCLUSIONS: Our study in middle-aged and older adults suggests that current and past depressive symptoms are associated with poorer diet quality, particularly in men.

The Mindful Eating Behavior Scale: Development and Psychometric Properties in a Sample of Dutch Adults Aged 55 Years and Older.

BACKGROUND: Earlier scales on mindful eating do not measure mindful eating independent from emotional or external eating, or mindful eating in common situations. OBJECTIVE: The objective was to develop a new instrument to measure the attention element of mindful eating, the Mindful Eating Behavior Scale (MEBS), and to compute the internal structure, reliabilities, and convergent validity of this scale. DESIGN: A cross-sectional ancillary study within the Longitudinal Aging Study Amsterdam was conducted between fall 2014 and spring 2015. PARTICIPANTS/SETTING: Participants were 1,227 Dutch adults aged 55 years and older from the Longitudinal Aging Study Amsterdam. MAIN OUTCOME MEASURE: A selection of 20 items from existing instruments was used to design an initial version of the MEBS. STATISTICAL ANALYSES PERFORMED: The internal structure of the MEBS was evaluated using an exploratory structural equation modeling approach on half of the sample and confirmatory factor analysis on the whole sample to develop the final version of the scale. The measurement invariance of the scores was tested with respect to sex, age, and body mass index. Reliabilities of subscales were determined with Cronbach's α. To test convergent validity, the scores of the new scale were correlated with theoretically relevant variables. RESULTS: Two items were deleted because of low item loadings and one item because of high correlated uniqueness. The final confirmatory factor analysis model with 17 items and four domains (Focused Eating, Hunger and Satiety Cues, Eating with Awareness, and Eating without Distraction) showed good fit (comparative fit index=0.97, Tucker-Lewis index=0.96, and root mean square error of approximation=0.04). Measurement invariance was found for sex, age, and body mass index. Cronbach's α values were medium to high (.70 to .89). Most correlations were in the expected directions, which indicated good preliminary convergent validity. CONCLUSIONS: The MEBS was successfully developed consisting of 17 items and four domains. Because of low interfactor correlations, a total score combining the four domains should not be computed. The MEBS showed good internal consistency and preliminary convergent validity in a sample of Dutch adults aged 55 years and older.