The association between BMI trajectories and bronchopulmonary dysplasia among very preterm infants.

OBJECTIVE: To investigate the association between change in body mass index (BMI) from birth to 36 weeks gestation (ΔBMI) and bronchopulmonary dysplasia (BPD) among infants born <30 weeks gestation. METHODS: This was a multicenter retrospective cohort study (2015-2018) of infants born <30 weeks gestation and alive at ≥34 weeks corrected. Main exposure was a change in BMI z score from birth to 36 weeks corrected age grouped into quartiles of change. Association between ΔBMI z scores and BPD was assessed using generalized linear mixed models. RESULTS: Among 772 included infants, 51% developed BPD. From birth to 36 weeks CGA, the weight z score of infants with BPD decreased less than for BPD-free infants, despite a greater decrease in length z score and similar caloric intake resulting in increases in BMI z score (median [IQR], 0.16 [-0.64; 1.03] vs -0.29 [-1.03; 0.49]; P < 0.01). In the adjusted analysis, higher ΔBMI z score quartiles were associated with higher odds of BPD (Q3 vs Q2, AOR [95% CI], 2.02 [1.23; 3.31] and Q4 vs Q2, AOR [95% CI], 2.00 [1.20; 3.34]). CONCLUSION: Among preterm infants, an increase in BMI z score from birth to 36 weeks corrected is associated with higher odds of BPD. IMPACT: Preterm infants with evolving lung disease often experience disproportionate growth in the neonatal period. In this multicenter cohort study, increases in BMI z score from birth to 36 weeks CGA were associated with higher odds of BPD. Despite similar caloric intake, infants with BPD had a higher weight- but lower length-for-age, resulting in higher BMI z score compared to BPD-free infants. This suggests that infants with evolving BPD may require different growth and nutritional targets compared to BPD-free infants.

Barriers and facilitators to diet, physical activity and lifestyle behavior intervention adherence: a qualitative systematic review of the literature.

BACKGROUND: Consuming a balanced diet and regular activity have health benefits. However, many adults have a difficult time adhering to diet and activity recommendations, especially in lifestyle interventions. Adherence to recommendations could be improved if common facilitators and barriers are accounted for in intervention design. The aim of this systematic review was to understand perceived barriers and facilitators to lifestyle (diet and/or activity) intervention guidelines. METHODS: This review follows the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. Studies included relied on qualitative methods to explore the barriers and facilitators healthy adults ([Formula: see text] 18 years) experienced in lifestyle interventions. Google Scholar, Cochrane Reviews, Medline, PubMed, and Web of Science were searched from January 2005 to October 2021. Main themes from each paper were thematically analyzed and reported as a barrier or facilitator to adherence at the individual, environment or intervention level using inductively derived themes. Study quality was assessed using the Critical Appraisal Skills Programme. RESULTS: Thirty-five papers were included. Of these, 46% were conducted in North America and the majority had more female participants (86% in mixed-sex studies, 26% females only). Similar themes emerged across all three levels as facilitators and barriers. At the individual level, attitudes, concern for health and physical changes. At the environmental level, social support, social accountability, changeable and unchangeable aspects of the community. Finally, delivery and design and content at the intervention level. An additional facilitator at the intervention level included fostering self-regulation through Behavior Change Taxonomies (BCT). CONCLUSIONS: Lifestyle interventions that foster self-regulatory skills, opportunities for social engagement and personalization of goals may improve behaviour adherence. This can be achieved through inclusion of BCT, tapering off of intervention supports, identification of meaningful goals and anticipated barriers with participants.

Does the 2019 Canada's Food Guide meet the needs of young athletes?

Background: The Canada's Food Guide (CFG) encourages Canadians to consume a balanced plate. However, this recommendation may not meet the nutritional needs of young athletes who have increased nutritional requirements. Aim: To evaluate how the 2019 CGF can be used to meet the nutritional needs of young athletes. Method: Five menu scenarios were created using the CFG's balanced plate and recipes from Health Canada. Each menu was analyzed to compare nutrient and energy needs of an index athlete (15-year-old male, 71 kg). Estimated energy requirements were based on nutrition guidelines set by National and International sports-nutrition position statements. Results: The adjusted CFG balanced plate plus an energy dense beverage at every meal was the closest to meeting the index athlete's nutrient requirements. Conclusion: The 2019 CFG's balanced plate needs to be adjusted to meet the nutritional requirements of individuals with active lifestyles.

Evaluation of the Diet Tracking Smartphone Application Keenoa™: A Qualitative Analysis.

Keenoa™ is a novel Canadian diet application (app) currently used by Canadian dietitians to collect diet-related data from clients. The goal of this study was to evaluate Keenoa™ based on user feedback and compare it to a conventional pen and paper method. One hundred and two participants were recruited and randomly assigned to record their diets using this application for 3 nonconsecutive days. Following this, participants were invited to complete an online "exit" survey. Seventy-two subjects responded, with 50 completing an open-ended question asking for general feedback about the app. Data were reviewed and 3 main themes emerged: strengths, challenges, and future recommendations. Strengths associated with the app consisted of picture recognition software, the additional commentary feature, and the overall pleasant data collection process. Challenges that were identified included inconsistencies with the barcode scanning features, the limited food database, time to enter food details, and software issues. Future recommendations included using a larger food database, pairing dietary intake with physical activity monitoring, and having accessible nutritional data. Despite these limitations, participants preferred using mobile apps to record diet compared with traditional written food diaries.

Association of Caloric Intake, Protein Intake, and Enteral Feeding Initiation with Weight Gain in Infants Born 32 to 34 Weeks' Gestation.

OBJECTIVE: This study aimed to determine the association of caloric intake, protein intake, and enteral feed initiation time in the first 3 days of life with weight loss percentage (%WL) at 7 days among infants born 32 to 34 weeks' gestational age (GA). STUDY DESIGN: This is a retrospective cohort study of 252 infants admitted to a neonatal intensive care unit. Patient data included patient characteristics, daily weight, intake, and method of nutrition in the first 3 days. Multivariate linear regression was used to explore associations between outcome (%WL at day 7 of life) and exposures (caloric intake, protein intake, and enteral feed initiation time) and adjusted for covariates (GA, birth weight, and sex). RESULTS: Median 7 days %WL was 2.3% (interquartile range: -5.2, 1.2). Average caloric intake and average protein intake in the first 3 days were 57 kcal/kg/d and 2.3 g/kg/d. In the adjusted linear regression, caloric intake and protein intake (coefficient = 0.03, 95% confidence interval [CI]: -0.06, 0.09 and coefficient = 0.11, 95% CI: -0.36, 2.30) were not associated with %WL at 7 days. Enteral feeds ≤12 hours were associated with less %WL at 7 days of life (Coef = -0.15, 95% CI: -2.67, -0.17). CONCLUSION: Enteral feeds ≤12 hours after delivery is associated with lower %WL at 7 days among preterm infants 32 to 34 weeks' GA.

Accuracy of two Generic Prediction Equations and One Population-Specific Equation for Resting Energy Expenditure in Individuals with Spinal Cord Injury.

PURPOSE: The primary aim was to assess the accuracy of common prediction equations, the Harris-Benedict (HB) and the Mifflin St. Jeor (MSJ) equations, for estimating resting energy expenditure (REE) among people with spinal cord injury (SCI) against actual REE measurements. The secondary aim was to cross-validate the Buchholz et al. energy prediction equation created for people with SCI. METHODS: A metabolic cart with canopy was used to measure the actual REE. The HB, MSJ, and the Buchholz et al. equations were used for the prediction of REE. RESULTS: Thirty-nine participants (31 males and 8 females) were enrolled in this cross-sectional study. The REEs significantly differed from one another, F(1.52, 57.68) = 52.04, P < 0.001, where both the HB (M = 1703.06, SD = 265.1) and the MSJ (M = 1628.92, SD = 233.8) energy predictions were significantly higher (P < 0.001) than the measured REE (M = 1394.05, SD = 298.7). In contrast, the Buchholz et al. equation did not differ from the measured REE. CONCLUSIONS: Our data show that the HB and MSJ equations do not accurately predict the energy needs of this community. Using a SCI-specific equation would improve estimates of REE, such as the Buchholz et al. equation. More research into energy equations for this population may help health care professionals better tailor dietary requirements for weight management.

Energy Intake and Food Habits between Weight Maintainers and Regainers, Five Years after Roux-en-Y Gastric Bypass.

We explored differences in dietary behaviours, energy, and macronutrient intake among individuals who had regained or maintained weight loss 5 or more years after Roux-en-Y gastric bypass (RYGB). This study assessed 27 adults who underwent RYGB an average of 12.1 ± 3.7 years before this study was conducted. Dietary assessment was performed using 3-day food records. Daily energy intake (kcal), protein (g), carbohydrate (g), fat (g), and alcohol intake (g) were computed using the ESHA's Food Processor®. Participants were classified by percent weight loss, maintainers (≥38 %), and regainers (≤30 %). Daily carbohydrate consumption was greater in regainers (222 ± 84.3 g) compared with maintainers (162 ± 67.5 g), (P < 0.05). Thirty-seven percent of participants were not consuming the recommended amount of protein and 26% reported never taking vitamin supplements after surgery. Alcohol consumption was higher among regainers (18.5 ± 30.9 g) compared with maintainers (2.6 ± 6.5 g), (P < 0.05). Finally, 74% of the participants reported no contact with a Registered Dietitian, whereas 78 % were in contact with a health care professional once a year post-surgery. Differences were seen in carbohydrate intake and alcohol consumption between weight maintainers and regainers. These data suggest dietitians need to play a more active role in the long-term care of this medically complex population.

Arthritis is associated with high nutritional risk among older Canadian adults from the Canadian Longitudinal Study on Aging.

This study assessed the association between arthritis, functional impairment, and nutritional risk (NR). Cross-sectional data were from the Canadian Longitudinal Study on Aging, a nationally representative sample of 45-85-year-old community-dwelling Canadians (n = 41,153). The abbreviated Seniors in the Community: Risk Evaluating for Eating and Nutrition II (SCREEN II-AB) Questionnaire determined NR scores (continuous), and high NR (score < 38); the Older American Resources and Services scale measured functional impairment. NR scores and status (low/high) were modelled using multiple linear and logistic regressions, respectively. Analyses adjusted for demographic characteristics, functional impairment, and health (body mass index, self-rated general and mental health). Additional analyses stratified the models by functional impairment. People with arthritis had poorer NR scores (B: - 0.35, CI - 0.48, - 0.22; p < 0.05) and increased risks of high NR (OR 1.11, 95% CI 1.06, 1.17). Among those with functional impairment, the likelihood of high NR was 31% higher in people with arthritis compared to those without arthritis (95% CI 1.12, 1.53). Among those with no functional impairment, the likelihood of high NR was 10% higher in people with arthritis compared to those without (95% CI 1.04, 1.16). These relationships differed based on the type of arthritis. Arthritis is associated with high NR in community-dwelling older adults, both with and without functional impairment. Findings highlight the need for further research on these relationships to inform interventions and improve clinical practices.

A family-centered lifestyle intervention to improve body composition and bone mass in overweight and obese children 6 through 8 years: a randomized controlled trial study protocol.

BACKGROUND: Childhood obesity gives rise to health complications including impaired musculoskeletal development that associates with increased risk of fractures. Prevention and treatment programs should focus on nutrition education, increasing physical activity (PA), reducing sedentary behaviours, and should monitor bone mass as a component of body composition. To ensure lifestyle changes are sustained in the home environment, programs need to be family-centered. To date, no study has reported on a family-centered lifestyle intervention for obese children that aims to not only ameliorate adiposity, but also support increases in bone and lean muscle mass. Furthermore, it is unknown if programs of such nature can also favorably change eating and activity behaviors. The aim of this study is to determine the effects of a 1 y family-centered lifestyle intervention, focused on both nutrient dense foods including increased intakes of milk and alternatives, plus total and weight-bearing PA, on body composition and bone mass in overweight or obese children. METHODS/DESIGN: The study design is a randomized controlled trial for overweight or obese children (6-8 y). Participants are randomized to control, standard treatment (StTx) or modified treatment (ModTx). This study is family-centred and includes individualized counselling sessions on nutrition, PA and sedentary behaviors occurring 4 weeks after baseline for 5 months, then at the end of month 8. The control group receives counselling at the end of the study. All groups are measured at baseline and every 3 months for the primary outcome of changes in body mass index Z-scores. At each visit blood is drawn and children complete a researcher-administered behavior questionnaire and muscle function testing. Changes from baseline to 12 months in body fat (% and mass), waist circumference, lean body mass, bone (mineral content, mineral density, size and volumetric density), dietary intake, self-reported PA and sedentary behaviour are examined. DISCUSSION: This family-centered theory-based study permits for biochemical and physiological assessments. This trial will assess the effectiveness of the intervention at changing lifestyle behaviours by decreasing adiposity while enhancing lean and bone mass. If successful, the intervention proposed offers new insights for the management or treatment of childhood obesity. TRIAL REGISTRATION: ClinicalTrials.gov, NCT01290016.

A Qualitative Evaluation of a Plate-Method Dietary Self-Monitoring Tool in a Sample of Adults Over 50.

Background: Self-monitoring is an important behavioral change technique to help users initiate and maintain dietary changes. Diet self-monitoring tools often involve the itemization of foods and recording of serving sizes. However, this traditional method of tracking does not conform to food guides using plate-based approach to nutrition education, such as the 2019 Canada's Food Guide (CFG). Objective: To explore the acceptability, facilitators and barriers of using a plate-based dietary self-monitoring tool based on the 2019 CFG (Plate Tool) compared with a traditional Food Journal (Food Journal). Methods: The 2 dietary self-monitoring tools were compared using a crossover study design over 2 wk. Adults over 50 (n = 47) from Montreal, Canada, were randomly assigned to use one tool over 3 d during 1 wk, then used the other tool the next week. Semistructured interviews (n = 45) were conducted after completing the second tool. A qualitative description of the interviews was conducted through an inductive determination of themes. Results: Facilitators to using the Plate Tool were its simplicity, quick completion time compared with the Food Journal and easiness to use, increased awareness of dietary habits and accountability, with participants expressing that it could help users make informed dietary changes aligning with the CFG. However, barriers to using the Plate Tool were its lack of precision, the participants' difficulty categorizing foods into the CFG categories and recording intake of foods not present on the CFG. Conclusions: The Plate Tool is an acceptable dietary self-monitoring tool for healthy adults over 50. Self-monitoring tools based on the plate method should take the barriers described in this study into account. Future studies should compare dietary self-monitoring methods to assess adherence and effectiveness at eliciting dietary behavior change.

Concurrent Validity of the Adult Eating Behavior Questionnaire in a Canadian Sample.

The current study aimed to test the factor structure of the Adult Eating Behavior Questionnaire (AEBQ), its construct validity against the Three-Factor Eating Questionnaire (TFEQ-R18) and its associations with body mass index (BMI) in Canadian adults (n = 534, 76% female). Confirmatory factor analysis (CFA) revealed that a seven-factor AEBQ model, with the Hunger subscale removed, had better fit statistics than the original eight-factor structure. Cronbach's alpha was used to assess the internal reliability of each subscale and resulted with α > 0.70 for all subscales except for Hunger (α = 0.68). Pearson's correlations were used to inform the convergent and discriminant validation of AEBQ against the TFEQ-R18 and to examine the relationship between AEBQ and BMI. All AEBQ Food Approach subscales positively correlated with that of the TFEQ-R18 Emotional Eating and Uncontrolled Eating subscales. Similarly, BMI correlated positively with Food Approach subscales (except Hunger) and negatively with Food Avoidance subscales (except Food Fussiness). These results support the use of a seven-factor AEBQ for adults self-reporting eating behaviors, construct validity of the AEBQ against TFEB-R18, and provide further evidence for the association of these traits with BMI.

Acceptability of a structured diet and exercise weight loss intervention in breast cancer survivors living with an overweight condition or obesity: A qualitative analysis.

BACKGROUND: Weight loss increases survivorship following breast cancer diagnosis. However, most breast cancer survivors (BCS) do not meet diet and exercise recommendations. AIM: The purpose of this study was to explore the barriers and facilitators of BCS who had lymphedema and who participated in a 22-week weight loss lifestyle intervention. METHODS AND RESULTS: Participants completed semi-structured interviews about barriers and facilitators to intervention adherence. Interviews were transcribed verbatim and a thematic analysis was conducted. Participants (n = 17) were 62 ± 8.0 years of age with a mean body mass index of 34.0 ± 7.1 kg/m2 . Four themes emerged: (1) facilitators of intervention adherence, (2) barriers of intervention adherence, (3) continuation of healthy habits post intervention, and (4) recommendations for intervention improvements. Facilitators of intervention adherence were education, social support, routine, motivation, goal-setting, meal-provisioning, self-awareness, and supervised exercise. Barriers to intervention adherence were personal life, health, meal dissatisfaction, seasonality, unchallenging exercises, and exercising alone. All women planned to continue the acquired healthy habits post intervention. Recommendations to improve the study included addressing the exercise regime, meal-provisioning, and dietary intake monitoring methods. CONCLUSION: Future strategies to engage BCS in weight loss interventions should promote group exercise, offer individualized meal-provisioning and exercise regimes, provide transition tools, and allow participants to choose their self-monitoring method.

Maternal and cord blood parameters are associated with placental and newborn outcomes in indigenous mothers: A case study in the MINDI cohort.

Background: Multiple infections, nutrient deficiencies and inflammation (MINDI) occur in indigenous communities, but their associations with perinatal outcomes have not been described. Objective: To assess maternal and cord blood micronutrient and inflammation status in peripartum mothers from the Ngäbe-Buglé comarca in Panama, and their associations with placental and infant outcomes. Methods: In 34 mother-newborn dyads, placental weight and diameter were measured, and maternal and cord blood were processed for complete cell counts, serum C-reactive protein, ferritin, serum transferrin receptor (sTfR), vitamins A and D. Blood volumes were calculated using Nadler's formula. Results: Mothers had low plasma volume (<2.8 L, 96%), vitamin A (52.9%), vitamin D (29.4%), iron (58.8%) and hemoglobin (23.5%), but high hematocrit (>40%, 17.6%) and inflammation (C-reactive protein >8.1 mg/L, 85.3%). Birthweights were normal, but low placental weight (35.3%), low head circumference Z-scores (17.6%), and low cord hemoglobin (5.9%), iron (79.4%), vitamin A (14.7%) and vitamin D (82.3%) were identified. Maternal and cord vitamin D were highly correlated. Higher maternal plasma volume was associated with heavier placentae (ß= 0.57), and higher cord D (ß= 0.43) and eosinophils (ß= 0.43) with larger placentae. Hemoconcentration (higher cord hematocrit) was associated with lower newborn weight (ß= -0.48) and head circumference (ß= -0.56). Inflammation [higher maternal neutrophils (ß= -0.50), and cord platelets (ß= -0.32)] was associated with lower newborn length and head circumference. Conclusion: Maternal-newborn hemoconcentration, subclinical inflammation and multiple nutrient deficiencies, particularly neonatal vitamin D deficiency, were identified as potential targets for interventions to improve pregnancy outcomes in vulnerable communities.

Antecedentes: Las Múltiples Infecciones, Nutrición Deficiente e Inflamación (MINDI), son frecuentes en comunidades indígenas, sin embargo, sus asociaciones con resultados de salud perinatales no han sido descritos. Objetivo: Evaluar la inflamación y los micronutrientes en sangre materna y de cordón de madres en trabajo de parto en la comarca Ngäbe-Buglé en Panamá, así como sus asociaciones con medidas placentarias y del recién nacido. Métodos: En 34 pares madre-recién nacido, se midieron peso y diámetro placentario, y se analizaron muestras de sangre materna y de cordón umbilical para hemograma completo, proteína-C reactiva (PCR), ferritina, receptor sérico de transferrina (RsTf), vitaminas A y D. Se usó la fórmula de Nadler para calcular volúmenes sanguíneos. Resultados: Las madres presentaron volumen plasmático (<2.8 L, 96%), vitamina A (52.9%), vitamina D (29.4%), hierro (58.8%) y hemoglobina (23.5%) bajos, pero el 17.6% presentaron hematocrito >40% y 85.3% presentaron inflamación (PCR >8.1 mg/L). Los pesos al nacer fueron normales, pero se identificó bajo peso placentario (35.3%), bajo puntaje-z de circunferencia cefálica neonatal, y en sangre de cordón, bajos hemoglobina (5.9%), hierro (79.4%), vitamina A (14.7%) y vitamina D (82.3%). Se encontró una fuerte correlación positiva entre la vitamina D materna y de sangre de cordón. Un mayor volumen plasmático materno se asoció con placentas de mayor peso (ß= 0.57), en tanto que concentraciones más altas de vitamina D (ß= 0.43) y mayor número de eosinófilos (ß= 0.43) se asociaron con mayor diámetro placentario. Una mayor hemoconcentración (hematocrito en cordón más alto) se asoció con menores peso al nacer (ß= -0.48) y circunferencia cefálica (ß= -0.56). La inflamación [mayor número de neutrófilos maternos (ß= -0.50) y plaquetas en sangre de cordón (ß= -0.32)] se asoció con menor talla y circunferencia cefálica neonatales. Conclusión: La hemoconcentración materna y del recién nacido, la inflamación subclínica y las múltiples deficiencias en micronutrientes, particularmente la deficiencia de vitamina D neonatal, se identificaron como potenciales áreas de intervención para mejorar los resultados de salud del embarazo en comunidades vulnerables.

Are Canadian women achieving a fit pregnancy? A pilot study.

OBJECTIVES: Canadian recommendations exist for energy intake (EI), physical activity (PA) and gestational weight gain (GWG) to help pregnant women avoid excessive GWG and attain "fit pregnancies". Our objectives were: 1) to measure daily EI, PA and GWG to observe whether pregnant women were meeting recommendations, 2) to explore the impact of health care provider advice on PA and GWG, and 3) to determine behaviours associated with recommended weekly GWG. METHODS: Women (n = 81) were recruited from prenatal classes. Current weight and self-reported pre-pregnancy weight were documented. Current PA levels and provider advice for PA and GWG were surveyed using questionnaires. Dietary recalls and pedometer steps were recorded for three and seven days respectively. RESULTS: The majority of our women were classified as having average pre-pregnancy body mass indices (BMI) of 23.3 +/- 4 kg/m2, average EI of 2237 kcal/d and energy expenditure (EE) of 2328 kcal/d, but with weekly rates of GWG in excess of current recommendations despite having received advice about GWG (74%) and PA (73%). Most were classified as sedentary (< 5000 steps/day (d)) and 36% as low active (< 7500 steps/d). Women were most likely to achieve appropriate GWG if their total PA was > 8.5 MET-hr/wk. CONCLUSION: Health care providers need to provide appropriate PA and GWG guidelines to pregnant women. Development of pregnancy step and MET-hr/wk recommendations are warranted in order to promote greater PA during pregnancy.

Psychosocial correlates of body mass index in four groups of Quebec adults.

The objective of the present analysis was to study the associations between body weight psychosocial correlates and body mass index (BMI) among four groups of adults in the Quebec population. Data were taken from the Social Lifestyles and Health 1998 Survey performed by the Institut de la Statistique du Québec (ISQ). The suggested guidelines of the ISQ were used to estimate the population's proportions and for statistical analysis. The groups studied were 25- to 44- and the 45- to 64-year-old men and women. In all groups, currently trying to lose weight increased the odds of reporting an excess weight. Better perceived eating habits was associated with lower BMI in most groups except in the 25- to 44-year-old women, where the trend was not significant. Higher number of physical activities related to transport and cigarette smoking were associated with lower BMI in both men groups. In both women groups, more frequent consumption of alcoholic beverages decreased significantly the odds of reporting excess body weight. A university degree was associated with a lower BMI only in the 25- to 44-year-old men. Regular practise of leisure time physical activity was associated with a lower BMI only in 45- to 64-year-old women. Opposite associations were observed between perceived health and BMI. In the 45- to 64-year-old men, better perceived health increased the odds of reporting an excess weight. Conversely, the odds of reporting excess weight decreased with better health in 25- to 44-year-old women. Many correlates differ between age group and sex. The identification of these factors illustrates the need to adapt obesity-related programmes toward specific sub-groups within the general population.

Validity and Usability of a Smartphone Image-Based Dietary Assessment App Compared to 3-Day Food Diaries in Assessing Dietary Intake Among Canadian Adults: Randomized Controlled Trial.

BACKGROUND: Accurate dietary assessment is needed in studies that include analysis of nutritional intake. Image-based dietary assessment apps have gained in popularity for assessing diet, which may ease researcher and participant burden compared to traditional pen-to-paper methods. However, few studies report the validity of these apps for use in research. Keenoa is a smartphone image-based dietary assessment app that recognizes and identifies food items using artificial intelligence and permits real-time editing of food journals. OBJECTIVE: This study aimed to assess the relative validity of an image-based dietary assessment app - Keenoa - against a 3-day food diary (3DFD) and to test its usability in a sample of healthy Canadian adults. METHODS: We recruited 102 participants to complete two 3-day food records. For 2 weeks, on 2 non-consecutive days and 1 weekend day, in random order, participants completed a traditional pen-to-paper 3DFD and the Keenoa app. At the end of the study, participants completed the System Usability Scale. The nutrient analyses of the 3DFD and Keenoa data before (Keenoa-participant) and after they were reviewed by dietitians (Keenoa-dietitian) were analyzed using analysis of variance. Multiple tests, including the Pearson coefficient, cross-classification, kappa score, % difference, paired t test, and Bland-Altman test, were performed to analyze the validity of Keenoa (Keenoa-dietitian). RESULTS: The study was completed by 72 subjects. Most variables were significantly different between Keenoa-participant and Keenoa-dietitian (P<.05) except for energy, protein, carbohydrates, fiber, vitamin B1, vitamin B12, vitamin C, vitamin D, and potassium. Significant differences in total energy, protein, carbohydrates, % fat, saturated fatty acids, iron, and potassium were found between the 3DFD and Keenoa-dietitian data (P<.05). The Pearson correlation coefficients between the Keenoa-dietitian and 3DFD ranged from .04 to .51. Differences between the mean intakes assessed by the 3DFD and Keenoa-dietitian were within 10% except for vitamin D (misclassification rate=33.8%). The majority of nutrients were within an acceptable range of agreement in the Bland-Altman analysis; no agreements were seen for total energy, protein, carbohydrates, fat (%), saturated fatty acids, iron, potassium, and sodium (P<.05). According to the System Usability Scale, 34.2% of the participants preferred using Keenoa, while 9.6% preferred the 3DFD. CONCLUSIONS: The Keenoa app provides acceptable relative validity for some nutrients compared to the 3DFD. However, the average intake of some nutrients, including energy, protein, carbohydrates, % fat, saturated fatty acids, and iron, differed from the average obtained using the 3DFD. These findings highlight the importance of verifying data entries of participants before proceeding with nutrient analysis. Overall, Keenoa showed better validity at the group level than the individual level, suggesting it can be used when focusing on the dietary intake of the general population. Further research is recommended with larger sample sizes and objective dietary assessment approaches.

Identifying Barriers of Arthritis-Related Disability on Food Behaviors to Guide Nutrition Interventions.

OBJECTIVE: To describe the impact of arthritis-related disability on aspects of food insecurity and to gain insight into the incentives and barriers to participating in a nutrition intervention. DESIGN: Four focus groups were held in April to May, 2018. Participants completed questionnaires about socioeconomic status, diet, and health. SETTING: The Perform Centre, Concordia University, Montreal, Canada. PARTICIPANTS: A convenience sample of 27 adults diagnosed with arthritis. PHENOMENON OF INTEREST: Perceived impact of arthritis-related disability on food behaviors as well as incentives and deterrents to participating in a nutrition intervention. ANALYSIS: Transcriptions of the focus group discussions were coded using the constant comparative method. Basic descriptive statistics were used to analyze the questionnaire data. RESULTS: The themes of pain, fatigue, knowledge, and social support emerged in discussions on food choices, procurement, preparation, consumption, and other lifestyle behaviors. Participants reported common barriers, although the extent to which they were affected varied. Questionnaire results revealed low disability. Timing, cost, and information quality were important incentives to participate in a nutrition intervention. CONCLUSIONS AND IMPLICATIONS: Results highlight the need for further research among people with greater limitations related to arthritis and adapted nutrition interventions that provide both knowledge and experience to help individuals overcome the challenges of arthritis.

Maternal and cord blood parameters are associated with placental and newborn outcomes in indigenous mothers: A case study in the MINDI cohort / Parámetros maternos y de sangre de cordón asociados con medidas placentarias y del recién nacido: Un estudio de casos en madres indígenas de la cohorte MINDI

Abstract Background: Multiple infections, nutrient deficiencies and inflammation (MINDI) occur in indigenous communities, but their associations with perinatal outcomes have not been described. Objective: To assess maternal and cord blood micronutrient and inflammation status in peripartum mothers from the Ngäbe-Buglé comarca in Panama, and their associations with placental and infant outcomes. Methods: In 34 mother-newborn dyads, placental weight and diameter were measured, and maternal and cord blood were processed for complete cell counts, serum C-reactive protein, ferritin, serum transferrin receptor (sTfR), vitamins A and D. Blood volumes were calculated using Nadler's formula. Results: Mothers had low plasma volume (<2.8 L, 96%), vitamin A (52.9%), vitamin D (29.4%), iron (58.8%) and hemoglobin (23.5%), but high hematocrit (>40%, 17.6%) and inflammation (C-reactive protein >8.1 mg/L, 85.3%). Birthweights were normal, but low placental weight (35.3%), low head circumference Z-scores (17.6%), and low cord hemoglobin (5.9%), iron (79.4%), vitamin A (14.7%) and vitamin D (82.3%) were identified. Maternal and cord vitamin D were highly correlated. Higher maternal plasma volume was associated with heavier placentae (β= 0.57), and higher cord D (β= 0.43) and eosinophils (β= 0.43) with larger placentae. Hemoconcentration (higher cord hematocrit) was associated with lower newborn weight (β= -0.48) and head circumference (β= -0.56). Inflammation [higher maternal neutrophils (β= -0.50), and cord platelets (β= -0.32)] was associated with lower newborn length and head circumference. Conclusion: Maternal-newborn hemoconcentration, subclinical inflammation and multiple nutrient deficiencies, particularly neonatal vitamin D deficiency, were identified as potential targets for interventions to improve pregnancy outcomes in vulnerable communities.

Resumen Antecedentes: Las Múltiples Infecciones, Nutrición Deficiente e Inflamación (MINDI), son frecuentes en comunidades indígenas, sin embargo, sus asociaciones con resultados de salud perinatales no han sido descritos. Objetivo: Evaluar la inflamación y los micronutrientes en sangre materna y de cordón de madres en trabajo de parto en la comarca Ngäbe-Buglé en Panamá, así como sus asociaciones con medidas placentarias y del recién nacido. Métodos: En 34 pares madre-recién nacido, se midieron peso y diámetro placentario, y se analizaron muestras de sangre materna y de cordón umbilical para hemograma completo, proteína-C reactiva (PCR), ferritina, receptor sérico de transferrina (RsTf), vitaminas A y D. Se usó la fórmula de Nadler para calcular volúmenes sanguíneos. Resultados: Las madres presentaron volumen plasmático (<2.8 L, 96%), vitamina A (52.9%), vitamina D (29.4%), hierro (58.8%) y hemoglobina (23.5%) bajos, pero el 17.6% presentaron hematocrito >40% y 85.3% presentaron inflamación (PCR >8.1 mg/L). Los pesos al nacer fueron normales, pero se identificó bajo peso placentario (35.3%), bajo puntaje-z de circunferencia cefálica neonatal, y en sangre de cordón, bajos hemoglobina (5.9%), hierro (79.4%), vitamina A (14.7%) y vitamina D (82.3%). Se encontró una fuerte correlación positiva entre la vitamina D materna y de sangre de cordón. Un mayor volumen plasmático materno se asoció con placentas de mayor peso (β= 0.57), en tanto que concentraciones más altas de vitamina D (β= 0.43) y mayor número de eosinófilos (β= 0.43) se asociaron con mayor diámetro placentario. Una mayor hemoconcentración (hematocrito en cordón más alto) se asoció con menores peso al nacer (β= -0.48) y circunferencia cefálica (β= -0.56). La inflamación [mayor número de neutrófilos maternos (β= -0.50) y plaquetas en sangre de cordón (β= -0.32)] se asoció con menor talla y circunferencia cefálica neonatales. Conclusión: La hemoconcentración materna y del recién nacido, la inflamación subclínica y las múltiples deficiencias en micronutrientes, particularmente la deficiencia de vitamina D neonatal, se identificaron como potenciales áreas de intervención para mejorar los resultados de salud del embarazo en comunidades vulnerables.

Efficacy of Nutrition Education-Based Cooking Workshops in Community-Dwelling Adults Aged 50 Years and Older.

Nutrition interventions offer an opportunity to meet the nutritional needs of community-dwelling older adults. This retrospective qualitative observational study aimed to determine if nutrition education-based cooking workshops offered in Southern Quebec helped improve dietary habits and nutrition-related knowledge, autonomy, and confidence among older adults. Participants (n = 144) in an 8-session cooking workshop program completed pre- and post-workshop session questionnaires. Baseline nutritional risk (n = 116) and body mass index (n = 112) were assessed using the Elderly Nutrition Screening Questionnaire. Paired sample t-tests and McNemar analyses were performed to determine changes over time for knowledge, autonomy, confidence and dietary habits, and specific dietary behaviors, respectively. Pearson correlation tests were performed to assess associations between variables. Significant improvements were observed over time in knowledge, confidence, and desired dietary habits but not in autonomy. At the end of the intervention a greater proportion of participants reported always consuming recommended amounts of whole grains, fruits and vegetables, water, and milk or milk alternatives. A significant association was observed between confidence and dietary habits and between knowledge and confidence. Food skills interventions that link nutrition knowledge with cooking competence offer the opportunity to improve dietary habits among community-dwelling older adults.

Foot-to-foot bioelectrical impedance accurately tracks direction of adiposity change in overweight and obese 7- to 13-year-old children.

Body composition measurements are valuable when evaluating pediatric obesity interventions. We hypothesized that foot-to-foot bioelectrical impedance analysis (BIA) will accurately track the direction of adiposity change, but not magnitude, in part due to differences in fat patterning. The purposes of this study were to examine the accuracy of body composition measurements of overweight and obese children over time using dual-energy x-ray absorptiometry (DXA) and BIA and to determine if BIA accuracy was affected by fat patterning. Eighty-nine overweight or obese children (48 girls, 41 boys, age 7-13 years) participating in a randomized controlled trial providing a family-centered, lifestyle intervention, underwent DXA and BIA measurements every 3 months. Bland-Altman plots showed a poor level of agreement between devices for baseline percent body fat (%BF; mean, 0.398%; +2SD, 8.685%; -2SD, -7.889%). There was overall agreement between DXA and BIA in the direction of change over time for %BF (difference between visits 3 and 1: DXA -0.8 ± 0.5%, BIA -0.7 ± 0.5%; P = 1.000) and fat mass (FM; difference between visits 3 and 1: DXA 0.7 ± 0.5 kg, BIA 0.6 ± 0.5 kg; P = 1.000). Bioelectrical impedance analysis measurements of %BF and FM at baseline were significantly different in those with android and gynoid fat (%BF: 35.9% ± 1.4%, 32.2% ± 1.4%, P < .003; FM: 20.1 ± 0.8 kg, 18.4 ± 0.8, P < .013). Bioelectrical impedance analysis accurately reports the direction of change in FM and FFM in overweight and obese children; inaccuracy in the magnitude of BIA measurements may be a result of fat patterning differences.