Anna Farmer

Early markers of adult obesity: a review

The purpose of this review was to evaluate factors in early childhood (≤5 years of age) that are the most significant predictors of the development of obesity in adulthood. Factors of interest included exposures/insults in the prenatal period, infancy and early childhood, as well as other socio‐demographic variables such as socioeconomic status (SES) or birth place that could impact all three time periods. An extensive electronic and systematic search initially resulted in 8,880 citations, after duplicates were removed. Specific inclusion and exclusion criteria were set, and following two screening processes, 135 studies were retained for detailed abstraction and analysis. A total of 42 variables were associated with obesity in adulthood; however, of these, only seven variables may be considered as potential early markers of obesity based on the reported associations. Possible early markers of obesity included maternal smoking and maternal weight gain during pregnancy. Probable early markers of obesity included maternal body mass index, childhood growth patterns (early rapid growth and early adiposity rebound), childhood obesity and fathers employment (a proxy measure for SES in many studies). Health promotion programmes/agencies should consider these factors as reasonable targets to reduce the risk of adult obesity.

Healthy strategies for successful weight loss and weight maintenance: a systematic review

The rates of overweight and obesity are rising in Canada and worldwide, and there is a need for effective methods for weight loss and weight maintenance to empower individuals to make changes. The purpose of this systematic review was to examine the evidence available for successful diet strategies for weight loss and weight maintenance among adults. A search was conducted of the following databases: CAB Abstracts, Central Register of Controlled Trials, EMBASE, MEDLINE, Food Science and Technology Abstracts, and Web of Knowledge. The studies investigated had participants who were overweight or obese and between 18 and 65 years of age. A successful study was defined as one that reported an intervention that created ≥5% weight loss from baseline and a maintenance phase during which the ≥5% weight loss was maintained from baseline to 12 months. After exclusions, the search resulted in 67 papers. Overall, for significant safe weight loss, an energy deficit was required, which was commonly achieved by reduced fat intake. Increased dietary fibre was also a component of 21% of successful interventions. Physical activity was included in 88% of successful interventions, and behaviour training such as self-monitoring was part of 92% of successful interventions. The same combination of energy and fat restriction, regular physical activity, and behavioural strategies was also required for successful weight maintenance. This review confirmed previous knowledge about weight loss and weight maintenance in adults. A comprehensive approach, including reduced dietary intake, regular physical activity, and behavioural strategies, is warranted and is supported by the research evidence.

The Alberta Pregnancy Outcomes and Nutrition (APrON) cohort study: rationale and methods

The Alberta Pregnancy Outcomes and Nutrition (APrON) study is an ongoing prospective cohort study that recruits pregnant women early in pregnancy and, as of 2012, is following up their infants to 3 years of age. It has currently enrolled approximately 5000 Canadians (2000 pregnant women, their offspring and many of their partners). The primary aims of the APrON study were to determine the relationships between maternal nutrient intake and status, before, during and after gestation, and (1) maternal mood; (2) birth and obstetric outcomes; and (3) infant neurodevelopment. We have collected comprehensive maternal nutrition, anthropometric, biological and mental health data at multiple points in the pregnancy and the post-partum period, as well as obstetrical, birth, health and neurodevelopmental outcomes of these pregnancies. The study continues to follow the infants through to 36 months of age. The current report describes the study design and methods, and findings of some pilot work. The APrON study is a significant resource with opportunities for collaboration.

Reasons for Non-Return to A Pediatric Weight Management Program

PURPOSE Obesity in childhood has become a major public health concern because of increasing rates of overweight and obesity. To address this epidemic, effective dietetic interventions must be developed. We examined parent/caregiver and/or patient reasons for not returning for follow-up clinical care in the Alberta Health Services, Edmonton Areas Nutrition Services Pediatric Weight Management Program (NS PWMP) in Edmonton, Alberta. METHODS A qualitative telephone survey was developed to identify reasons for non-return to the NS PWMP. Face validity was evaluated by five pediatric registered dietitians (RDs). RESULTS The survey was administered to parents/caregivers of children or adolescents aged 2.5 to 14.2 years (n=21) who attended fewer than two appointments in the NS PWMP. The major reasons for non-return included physical barriers (scheduling, parking, location), organizational barriers (clinic environment), and program educational content (type of educational tools, the focus of lifestyle education on the individual rather than the family, physical activity interventions, and appropriateness of information for the parent or child). CONCLUSIONS Development and delivery of effective dietetic interventions for children and adolescents at risk of overweight and obesity may be achieved by emphasizing skill building within the child and the family. Analysis of child and family feedback on clinical RD services is critical to optimization of care in a pediatric weight management program.

Involvement in home meal preparation is associated with food preference and self-efficacy among Canadian children

OBJECTIVE To examine the association between frequency of assisting with home meal preparation and fruit and vegetable preference and self-efficacy for making healthier food choices among grade 5 children in Alberta, Canada. DESIGN A cross-sectional survey design was used. Children were asked how often they helped prepare food at home and rated their preference for twelve fruits and vegetables on a 3-point Likert-type scale. Self-efficacy was measured with six items on a 4-point Likert-type scale asking children their level of confidence in selecting and eating healthy foods at home and at school. SETTING Schools (n =151) located in Alberta, Canada. SUBJECTS Grade 5 students (n = 3398). RESULTS A large majority (83-93 %) of the study children reported helping in home meal preparation at least once monthly. Higher frequency of helping prepare and cook food at home was associated with higher fruit and vegetable preference and with higher self-efficacy for selecting and eating healthy foods. CONCLUSIONS Encouraging children to be more involved in home meal preparation could be an effective health promotion strategy. These findings suggest that the incorporation of activities teaching children how to prepare simple and healthy meals in health promotion programmes could potentially lead to improvement in dietary habits.

Demographic and socio-economic factors related to food intake and adherence to nutritional recommendations in a cohort of pre-school children

OBJECTIVE To examine: (i) childrens food intake and adherence to both Canadas Food Guide for Healthy Eating and Dietary Reference Intakes; and (ii) the social and demographic factors related to childrens food intake. DESIGN A cross-sectional study. SETTING Data were obtained through the Quebec Longitudinal Study of Child Development 1998-2010, a representative sample (n 2103) of children born in 1998 in the province of Quebec, Canada. Information on energy, macronutrient and food consumption was derived from responses to a 24 h dietary recall interview addressed to childrens mothers and day-care staff when the children were 4 years old. SUBJECTS A total of 1549 children aged 4 years who participated in a nutritional sub-study. RESULTS The mean daily total energy intake was 6360 kJ (1520 kcal) for girls and 6916 kJ (1653 kcal) for boys. For boys and girls alike, energy intake was comprised of approximately 54 % carbohydrates, 31 % fats and 15 % proteins. The mean number of servings consumed from each of the four essential food groups closely approached the dietary recommendations made by Canadas Food Guide for Healthy Eating; however, <2 % of the children in the present study actually met the full dietary guidelines. The dietary intake of pre-school children was associated with socio-economic and demographic factors, most notably mothers level of education, mothers immigrant status and sex of the child. CONCLUSIONS Diet-related disparities associated with socio-economic and demographic factors exist from as early as 4 years of age.

A School Gardening and Healthy Snack Program Increased Aboriginal First Nations Children's Preferences Toward Vegetables and Fruit

OBJECTIVE The researchers evaluated the impact of a 7-month gardening and 4-month vegetable and fruit snack program on Aboriginal First Nations childrens home consumption and preferences toward vegetables and fruit. METHODS The intervention was based on the Social Cognitive Theory. Children in grades 1-6 planted and tended classroom container gardens and prepared and ate what grew. At baseline and 7 months later, children tasted and rated 17 vegetables and fruit using a Likert scale and indicated whether they ate each food at home. RESULTS Data were collected from 76 of 116 children (65.5%). Preference scores for vegetables, fruit, and vegetables and fruit combined increased over the 7 months (P < .017). Self-reported home consumption did not change. CONCLUSIONS AND IMPLICATIONS School interventions have the potential to increase childrens preferences for vegetables and fruit. Family participation is likely required, along with increased community availability of produce, to promote home consumption.

Factors and Barriers Associated with Early Adoption of Nutrition Guidelines in Alberta, Canada

OBJECTIVE To identify factors that influenced early adoption and implementation of the Alberta Nutrition Guidelines for Children and Youth (ANGCY) in schools in Alberta, Canada; and to identify healthy eating strategies that were implemented as a result of the guidelines. Barriers and facilitators were also investigated. DESIGN Multiple case study design (n = 3). Semi-structured interviews and direct observations were used to collect data. SETTING AND PARTICIPANTS Three schools in Alberta were selected for individual case studies. Eighteen key informants were interviewed from the 3 cases. PHENOMENON OF INTEREST To investigate how the motivation shown by school administration and stakeholders for the ANGCY influenced the early adoption and implementation of the guidelines. ANALYSIS Content analysis was used to analyze data. RESULTS Various healthy eating strategies were implemented within the 3 cases after uptake of the guidelines. Support from the school superintendent and the work of a health champion facilitated the adoption and implementation of the guidelines, whereas parents posed some barriers to the adoption and implementation of the ANGCY. CONCLUSIONS AND IMPLICATIONS This study reinforces the importance of identifying a health champion to oversee healthy eating strategies in schools, and of involving parents in the promotion of childrens healthy lifestyles.

Fruit and vegetable preferences and intake among children in Alberta.

PURPOSE The association between preference for and intake of fruits and vegetables was examined among Albertan children. METHODS Data used were collected as part of a provincial population-based survey among grade 5 children in Alberta. Intake of two fruits and five vegetables was assessed using the Harvard food frequency questionnaire, and preference for individual fruit and vegetable items was rated using a three-point Likert-type scale. Random effects models with children nested within schools were used to test for associations between fruit and vegetable preference and intake. RESULTS A total of 3398 children aged 10 to 11 years returned completed surveys. Children who reported a greater liking for fruits and vegetables also reported significantly (p<0.001) higher intake. On average, children who liked a food a lot ate 0.5 to 2.7 more weekly servings of the food than did children who did not like the food. CONCLUSIONS These findings suggest that focusing on interventions designed to increase taste preference may lead to increased fruit and vegetable intake among children. Introducing children to unfamiliar fruits and vegetables through taste testing may be an effective and practical health promotion approach for improving dietary habits.

Dairy foods are an important source of calcium and vitamin D among Canadian-born and Asian-born Chinese in Edmonton, Alberta

Low intakes of calcium and vitamin D increase the risk for osteoporosis, bone fracture, and other health problems. This study aimed to examine the calcium and vitamin D intakes of Canadian-born Chinese (CBC) and Asian-born Chinese (ABC) in Edmonton, Canada, and to identify usual food sources of these nutrients. We hypothesized that CBC would have higher intakes of calcium and vitamin D than ABC and that the food sources of these nutrients would differ by region of birth (Canada vs Asia). Two in-person multipass 24-hour dietary recalls were administered for 1 weekday and weekend day for 81 healthy ethnically Chinese aged 18 to 58 years. The risks for calcium and vitamin D inadequacy were calculated as were the contributions of specific foods to calcium and vitamin D intakes. Calcium intake was 781 ± 337 mg/d for CBC and 809 ± 369 mg/d for ABC (P = .737). Vitamin D intake was 3.8 ± 3.4 μg/d for CBC and 5.0 ± 3.9 μg/d for ABC (P = .158). Respective risks for calcium and vitamin D inadequacy were 36% and 98% for men and 78% and 100% for women. Dairy contributed most to the calcium (43%) and vitamin D (52%) intake of participants. For ABC, soybean products contributed to 8.1% of calcium, whereas fatty fish contributed to 16.7% of vitamin D. For CBC, red meats contributed to 11.1% of vitamin D. Dietary intakes of calcium and vitamin D need to be increased in Chinese Canadians through the promotion of dairy and culturally relevant sources of these nutrients.