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Acolatse L, Pourshahidi LK, Logue C, McCann MT, Kerr MA. Child food portion sizes in the home environment: how do parents decide? Proc Nutr Soc 2023; 82:386-393. [PMID: 36866645 DOI: 10.1017/s0029665123000071] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The consumption of larger portion sizes (PS) of food has been implicated in the increased prevalence of childhood obesity. The home is usually the first place children learn about food, however, little is known about how parents determine child PS in the home environment. This narrative review aimed to explore parental beliefs, decisions, strategies and barriers to the provision of appropriate food PS for children in the home environment. Results indicate that parental decisions on child food PS are based on the amounts they serve themselves, personal intuition and knowledge of child appetite. Owing to the habitual nature of food provision, parental decisions on child PS may be taken without conscious thought and/or could be part of a complex decision-making process influenced by several interlinked factors, including parental childhood mealtime experiences, other family members and child weight status. Strategies to determine child-appropriate PS include modelling the desired PS behaviour, use of unit-based food packaging and PS estimation aids, and providing the child with a degree of autonomy to rely on their own appetite cues. A lack of knowledge/awareness of PS guidance is a key barrier identified by parents to the provision of age-appropriate PS, warranting the inclusion of salient child-appropriate PS guidance within national dietary recommendations. Further home-based interventions to improve the provision of appropriate child PS are required, leveraged on parental strategies already in use, as outlined in this review.
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Affiliation(s)
- Lena Acolatse
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - L Kirsty Pourshahidi
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - Caomhan Logue
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - Mary T McCann
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - Maeve A Kerr
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
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2
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Liu Q, Wang L, Guo S, Allman-Farinelli M, Rangan A. Development and validation of an online tool to assess perceived portion size norms of discretionary foods. Eur J Clin Nutr 2023:10.1038/s41430-023-01290-y. [PMID: 37217622 PMCID: PMC10393777 DOI: 10.1038/s41430-023-01290-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 05/24/2023]
Abstract
BACKGROUND Perceived portion size norms (typical perception of how much of a given food individuals choose to eat at a single occasion) may have shifted towards larger sizes due to the ubiquity of large serving sizes. However, there is a lack of validated tools to assess such norms for energy-dense and nutrient-poor discretionary foods. This study aimed to develop and validate an online tool to examine the perceived portion size norms of discretionary foods. METHODS An online image-series tool of 15 commonly consumed discretionary foods was developed, with eight successive portion size options included for each food. Using a randomised-crossover design, adult consumers (18-65 years) completed the validation study in a laboratory session (April-May 2022) by reporting their perceived portion size norms for each food twice, once based on food images on a computer and another time based on equivalent real food portion size options at food stations in the laboratory. Agreement between methods for each test food was examined using cross-classification and intra-class correlation (ICC). RESULTS A sample of 114 subjects were recruited (mean age 24.8 years). Cross-classification indicated >90% of selections were matched in the same or adjacent portion size option. ICC was 0.85 across all foods, demonstrating a good level of agreement. CONCLUSION This novel online image-series tool developed to examine perceived portion size norms of discretionary foods showed good agreement with equivalent real food portion size options and may be valuable to investigate perceived portion size norms of common discretionary foods in future studies.
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Affiliation(s)
- Qingzhou Liu
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, 2006, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Leanne Wang
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia
- Discipline of Nutrition and Dietetics, Susan Wakil School of Nursing and Midwifery, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia
| | | | - Margaret Allman-Farinelli
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia
- Discipline of Nutrition and Dietetics, Susan Wakil School of Nursing and Midwifery, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Anna Rangan
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia.
- Discipline of Nutrition and Dietetics, Susan Wakil School of Nursing and Midwifery, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia.
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3
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Liu Q, Wang L, Allman-Farinelli M, Rangan A. Systematic review of the portion size norm of discretionary foods. Nutr Rev 2022; 81:531-554. [PMID: 36137249 DOI: 10.1093/nutrit/nuac074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT Portion size norm is described as the perception of how much of a given food people choose to eat. Reducing the portion size norm of foods that are high in saturated fat, added sugar, and added salt toward smaller sizes might be a potential strategy to promote appropriate portion size selections. However, an overview of existing portion size norms for discretionary foods has yet to be established. OBJECTIVE The aim of this systematic review was to examine the portion size norm of discretionary foods and assess the methodologies used to investigate the norm. DATA SOURCES The literature search was conducted in 6 databases following the PRISMA guidelines (from inception to January 2022). DATA EXTRACTION Forty studies were eligible and grouped into 3 categories by portion size norm measures: normal (n = 26), appropriate (n = 8), and preferred portion sizes (n = 3). Study quality was assessed using the Joanna Briggs Institute Critical Appraisal Tools. DATA ANALYSIS A wide range of portion sizes were considered normal for each food type, with means/medians varying from 2- to 4-fold among studies. Studies differed considerably in design, with variables including the setting, food type, food presentation, the manner in which portion-size-related questions were formulated, and the range and number of displayed serving size options. The quality of reviewed studies was mixed (25 studies had low or moderate risk of bias, 15 had high risk of bias), and the method of assessing portion size was not validated in 15 of 33 quantitative studies. CONCLUSION The assessment of portion size in future studies should be conducted using tools that are validated for the population of interest so that more definitive conclusions can be drawn regarding portion size norms for discretionary foods. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration number CRD42021249911.
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Affiliation(s)
- Qingzhou Liu
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia.,Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Leanne Wang
- the Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia.,the Faculty of Medicine and Health, Discipline of Nutrition and Dietetics, Susan Wakil School of Nursing and Midwifery, The University of Sydney, Sydney, New South Wales, Australia
| | - Margaret Allman-Farinelli
- the Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia.,the Faculty of Medicine and Health, Discipline of Nutrition and Dietetics, Susan Wakil School of Nursing and Midwifery, The University of Sydney, Sydney, New South Wales, Australia
| | - Anna Rangan
- the Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia.,the Faculty of Medicine and Health, Discipline of Nutrition and Dietetics, Susan Wakil School of Nursing and Midwifery, The University of Sydney, Sydney, New South Wales, Australia
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4
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Fraser K, Love P, Campbell KJ, Ball K, Opie RS. Meal kits in the family setting: Impacts on family dynamics, nutrition, social and mental health. Appetite 2021; 169:105816. [PMID: 34801628 DOI: 10.1016/j.appet.2021.105816] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 11/03/2021] [Accepted: 11/16/2021] [Indexed: 11/30/2022]
Abstract
Families face many barriers in providing nutritious home-cooked family meals. Meal kit subscription services are increasingly popular among families and may address obstacles to cooking at home and facilitate shared family meals. This study aimed to understand why families use meal kits and what they perceived to be the main impacts on family dynamics, nutrition, social and mental health. Sixteen primary meal providers with at least one child 18 years and under living at home, were recruited via social media (e.g., Facebook, Twitter) to participate in a semi-structured interview using Zoom videoconferencing. Interviews were conducted with participants who currently purchased and used commercially available meal kits in Australia (e.g., HelloFresh, Marley Spoon). Thematic analysis of interview transcripts revealed that women, as the primary carers responsible for family meals, primarily reported the role that meal kits played in reducing their mental load through reduced food-related decision making, enhanced family participation in meal preparation, and opportunities for food literacy. Additionally, meal kits were reported to reduce food eaten away-from-home with the majority of participants perceiving meal kits to provide nutritionally dense meals and appropriate portion sizes aligned with National dietary guidelines. This study provides important insights into the potential physical, mental and social health benefits of meal kits in supporting families to cook and eat meals together at home. While meal kits have the capacity to positively influence population health and wellbeing, it is necessary that meal kit subscription services address the nutritional quality of their meals and provide evidence-based nutrition messaging to facilitate improvements in food literacy and nutritional intake.
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Affiliation(s)
- Kylie Fraser
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise & Nutrition Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood Victoria, 3125, Australia.
| | - Penny Love
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise & Nutrition Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood Victoria, 3125, Australia
| | - Karen J Campbell
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise & Nutrition Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood Victoria, 3125, Australia
| | - Kylie Ball
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise & Nutrition Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood Victoria, 3125, Australia
| | - Rachelle S Opie
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise & Nutrition Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood Victoria, 3125, Australia
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5
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Vargas-Alvarez MA, Navas-Carretero S, Palla L, Martínez JA, Almiron-Roig E. Impact of Portion Control Tools on Portion Size Awareness, Choice and Intake: Systematic Review and Meta-Analysis. Nutrients 2021; 13:nu13061978. [PMID: 34207492 PMCID: PMC8229078 DOI: 10.3390/nu13061978] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/12/2021] [Accepted: 05/15/2021] [Indexed: 02/04/2023] Open
Abstract
Portion control utensils and reduced size tableware amongst other tools, have the potential to guide portion size intake but their effectiveness remains controversial. This review evaluated the breadth and effectiveness of existing portion control tools on learning/awareness of appropriate portion sizes (PS), PS choice, and PS consumption. Additional outcomes were energy intake and weight loss. Published records between 2006–2020 (n = 1241) were identified from PubMed and WoS, and 36 publications comparing the impact of portion control tools on awareness (n = 7 studies), selection/choice (n = 14), intake plus related measures (n = 21) and weight status (n = 9) were analyzed. Non-tableware tools included cooking utensils, educational aids and computerized applications. Tableware included mostly reduced-size and portion control/calibrated crockery/cutlery. Overall, 55% of studies reported a significant impact of using a tool (typically smaller bowl, fork or glass; or calibrated plate). A meta-analysis of 28 articles confirmed an overall effect of tool on food intake (d = –0.22; 95%CI: –0.38, –0.06; 21 comparisons), mostly driven by combinations of reduced-size bowls and spoons decreasing serving sizes (d = –0.48; 95%CI: –0.72, –0.24; 8 comparisons) and consumed amounts/energy (d = –0.22; 95%CI: –0.39, –0.05, 9 comparisons), but not by reduced-size plates (d = –0.03; 95%CI: –0.12, 0.06, 7 comparisons). Portion control tools marginally induced weight loss (d = –0.20; 95%CI: –0.37, –0.03; 9 comparisons), especially driven by calibrated tableware. No impact was detected on PS awareness; however, few studies quantified this outcome. Specific portion control tools may be helpful as potentially effective instruments for inclusion as part of weight loss interventions. Reduced size plates per se may not be as effective as previously suggested.
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Affiliation(s)
- M. Angeles Vargas-Alvarez
- Center for Nutrition Research, University of Navarra, 31008 Pamplona, Spain; (M.A.V.-A.); (S.N.-C.)
- Department of Nutrition, Food Science and Physiology, Faculty of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain;
| | - Santiago Navas-Carretero
- Center for Nutrition Research, University of Navarra, 31008 Pamplona, Spain; (M.A.V.-A.); (S.N.-C.)
- Department of Nutrition, Food Science and Physiology, Faculty of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain;
- Navarra Institute for Health Research (IdiSNa), 31008 Pamplona, Spain
- CIBERobn, Obesity and Nutrition, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Luigi Palla
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy;
- Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - J. Alfredo Martínez
- Department of Nutrition, Food Science and Physiology, Faculty of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain;
- CIBERobn, Obesity and Nutrition, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Eva Almiron-Roig
- Center for Nutrition Research, University of Navarra, 31008 Pamplona, Spain; (M.A.V.-A.); (S.N.-C.)
- Department of Nutrition, Food Science and Physiology, Faculty of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain;
- Navarra Institute for Health Research (IdiSNa), 31008 Pamplona, Spain
- Correspondence: ; Tel.: +34-948-425-600
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6
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Diet Quality of Elite Australian Athletes Evaluated Using the Athlete Diet Index. Nutrients 2020; 13:nu13010126. [PMID: 33396371 PMCID: PMC7823332 DOI: 10.3390/nu13010126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 11/22/2022] Open
Abstract
While athletes’ nutrient intakes have been widely reported, few studies have assessed the diet quality of athletes. This is the first study to evaluate the diet quality of athletes using the purpose-built Athlete Diet Index (ADI). A convenience sample of 165 elite athletes from Australian sporting institutions completed the ADI online, with subsequent automated results provided to their respective accredited sports dietitians (ASDs). At the completion of athlete participation, ASDs (n = 12) responded to a range of survey items using a Likert scale (i.e., 1 = strongly agree to 5 = strongly disagree) to determine the suitability of the ADI in practice. Differences in ADI scores for demographics and sport-specific variables were investigated using independent t-tests, analysis of variance (ANOVA) and Bonferroni multiple comparisons. Spearman’s rank correlation was used to assess the association between total scores and demographics. The mean total ADI score was 91.4 ± 12.2 (range 53–117, out of a possible 125). While there was no difference in total scores based on demographics or sport-specific variables; team sport athletes scored higher than individual sport athletes (92.7 vs. 88.5, p < 0.05). Athletes training fewer hours (i.e., 0–11 h/week) scored higher on Dietary Habits sub-scores compared with athletes training more hours (≥12 h/week; p < 0.05), suggesting that athletes who train longer may be at risk of a compromised dietary pattern or less than optimal nutrition practices that support training. Most (75%) ASDs surveyed strongly agreed with the perceived utility of the ADI for screening athletes and identifying areas for nutrition support, confirming its suitability for use in practice.
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7
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Follong BM, Prieto-Rodriguez E, Miller A, Collins CE, Bucher T. Integrating nutrition into the mathematics curriculum in Australian primary schools: protocol for a randomised controlled trial. Nutr J 2020; 19:128. [PMID: 33243231 PMCID: PMC7694306 DOI: 10.1186/s12937-020-00640-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 10/29/2020] [Indexed: 11/18/2022] Open
Abstract
Background Nutrition education programs in schools have been effective in improving children’s knowledge and behaviours related to food and nutrition. However, teachers find it challenging to implement such programs due to overcrowded curricula. Integrating nutrition with core subjects such as mathematics could potentially address time constraints and improve the learning of both. The primary aim of this randomized controlled trial (RCT) is to evaluate the impact of a cross-curricular nutrition and mathematics program on primary school students’ portion size estimation skills. Secondary aims include impact on their nutrition knowledge, attitudes towards mathematics and evaluating the quality of the lessons. Methods Twelve Year 3–4 classes from Catholic schools in New South Wales, Australia will be randomised to intervention (n = 6) or control (n = 6) groups. Teachers in the intervention group will receive a professional development workshop and resources to teach 4–5 lessons on portion size and measurements across 1–4 weeks. Outcome measures include portion size estimation skills, nutrition knowledge and attitudes towards mathematics, with data collected during three school visits (pre-intervention, immediately post-intervention, 4 weeks post-intervention). Additionally, teaching quality will be assessed in both intervention and control groups and process evaluation undertaken using teacher interviews and student focus groups. Discussion This RCT uses an innovative approach to improve both nutrition and mathematics related learning outcomes among primary school children. It has the potential to impact teaching practices regarding integration of nutrition into curricula and enhance the implementation of nutrition education interventions. Trial registration Australian and New Zealand Clinical Trials Register ACTRN12619001071112 31/07/2019.
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Affiliation(s)
- Berit M Follong
- School of Health Sciences, Faculty of Health and Medicine, The University of Newcastle, Newcastle, NSW, Australia.,Priority Research Centre for Physical Activity and Nutrition, The University of Newcastle, Newcastle, NSW, Australia.,Priority Research Centre for Health Behaviour, The University of Newcastle, Newcastle, NSW, Australia
| | - Elena Prieto-Rodriguez
- School of Education, Faculty of Education and Arts, The University of Newcastle, Newcastle, NSW, Australia
| | - Andrew Miller
- School of Education, Faculty of Education and Arts, The University of Newcastle, Newcastle, NSW, Australia
| | - Clare E Collins
- School of Health Sciences, Faculty of Health and Medicine, The University of Newcastle, Newcastle, NSW, Australia.,Priority Research Centre for Physical Activity and Nutrition, The University of Newcastle, Newcastle, NSW, Australia
| | - Tamara Bucher
- Priority Research Centre for Physical Activity and Nutrition, The University of Newcastle, Newcastle, NSW, Australia. .,Priority Research Centre for Health Behaviour, The University of Newcastle, Newcastle, NSW, Australia. .,School of Environmental and Life Sciences, Faculty of Science, The University of Newcastle, 10 Chittaway Road, Ourimbah, NSW, 2258, Australia.
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8
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Relative validity and reliability of a novel diet quality assessment tool for athletes: the Athlete Diet Index. Br J Nutr 2020; 126:307-319. [PMID: 33077018 DOI: 10.1017/s000711452000416x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Diet quality indices are a practical, cost-effective method to evaluate dietary patterns, yet few have investigated diet quality in athletes. This study describes the relative validity and reliability of the recently developed Athlete Diet Index (ADI). Participants completed the electronic ADI on two occasions, 2 weeks apart, followed by a 4-d estimated food record (4-dFR). Relative validity was evaluated by directly comparing mean scores of the two administrations (mAdm) against scores derived from 4-dFR using Spearman's rank correlation coefficient and Bland-Altman (B-A) plots. Construct validity was investigated by comparing mAdm scores and 4-dFR-derived nutrient intakes using Spearman's coefficient and independent t test. Test-retest reliability was assessed using paired t test, intraclass correlation coefficients (ICC) and B-A plots. Sixty-eight elite athletes (18·8 (sd 4·2) years) from an Australian sporting institute completed the ADI on both occasions. Mean score was 84·1 (sd 15·2; range 42·5-114·0). The ADI had good reliability (ICC = 0·80, 95 % CI 0·69, 0·87; P < 0·001), and B-A plots (mean 1·9; level of agreement -17·8, 21·7) showed no indication of systematic bias (y = 4·57-0·03 × x) (95 % CI -0·2, 0·1; P = 0·70). Relative validity was evaluated in fifty athletes who completed all study phases. Comparison of mAdm scores with 4-dFR-derived scores was moderate (rs 0·69; P < 0·001) with no systematic bias between methods of measurement (y = 6·90-0·04 × x) (95 % CI -0·3, 0·2; P = 0·73). Higher scores were associated with higher absolute nutrient intake consistent with a healthy dietary pattern. The ADI is a reliable tool with moderate validity, demonstrating its potential for application to investigate the diet quality of athletes.
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9
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Schwartz C, Lange C, Hachefa C, Cornil Y, Nicklaus S, Chandon P. Effects of snack portion size on anticipated and experienced hunger, eating enjoyment, and perceived healthiness among children. Int J Behav Nutr Phys Act 2020; 17:70. [PMID: 32487121 PMCID: PMC7268352 DOI: 10.1186/s12966-020-00974-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 05/19/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Large portion sizes encourage overconsumption. Prior studies suggest that this may be due to errors in anticipating the effects of portion size, although the studies were limited to adults and energy-dense foods. OBJECTIVE Our aim was to investigate potential anticipation errors related to the effects of portion size on hunger, eating enjoyment, and healthiness ratings among 8-to-11-year-old children, for snacks differing in energy density and healthiness perception, and as a function of initial hunger. METHODS In a within-subject design, 83 children aged 8 to 11 years old were first asked to anticipate how much they would enjoy, how hungry they would feel after eating, and how healthy it would be to eat a recommended serving size, a 50% larger portion, and a 125% larger portion of brownie or applesauce. Over six subsequent sessions, the children were asked to eat all of each of these portions and then rate their post-intake enjoyment, residual hunger, and healthiness perceptions. We also measured hunger at the beginning of each session. RESULTS For both snacks, larger portions reduced anticipated and experienced residual hunger similarly. In contrast, larger portions increased anticipated but not experienced eating enjoyment for both snacks; although larger portions increased anticipated and experienced enjoyment ratings among extremely hungry children. All children under-anticipated how much they would enjoy the smaller portion sizes. Healthiness ratings were unaffected by portion size for both snacks but differed across foods (applesauce vs. brownie). CONCLUSIONS Children anticipate the effects of portion size on hunger change accurately, overestimate the effects of portion size on eating enjoyment, and rate food healthiness on food type and not portion size. Helping children better anticipate the enjoyment from smaller (recommended) portion sizes and understand that food quantity, not just quality, matters for healthy eating may be a solution to improve portion control.
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Affiliation(s)
- Camille Schwartz
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France.
| | - Christine Lange
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Celia Hachefa
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France.,INSEAD, Sorbonne Université Behavioural Lab., F-77300, Fontainebleau, France
| | - Yann Cornil
- University of British Columbia, Sauder School of Business, Vancouver, Canada
| | - Sophie Nicklaus
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRAE, Université Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Pierre Chandon
- INSEAD, Sorbonne Université Behavioural Lab., F-77300, Fontainebleau, France
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10
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Brown HM, Rollo ME, de Vlieger NM, Collins CE, Bucher T. Influence of the nutrition and health information presented on food labels on portion size consumed: a systematic review. Nutr Rev 2019; 76:655-677. [PMID: 29767760 DOI: 10.1093/nutrit/nuy019] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Context In recent decades, portion sizes have increased significantly. Although previous research indicates that food labels impact on product choice and healthiness perception, their impact on portion sizes consumed is less clear. Objective This systematic review examined whether food label information influenced portion size consumption. Data sources A search of 7 major electronic databases for studies published from 1980 to April 2016 was conducted. Data extraction Two reviewers independently screened 11 128 abstracts. Data were extracted from 32 articles (comprising 36 studies). Results Based on the test food used, the overall effects were found to be: no effect, a positive effect, or a negative effect. Labels displaying energy content (n = 15 studies, 17 effects) and fat content information (n = 13 studies, 14 effects) were evaluated most commonly, with exercise equivalent labels evaluated least (n = 2 studies, 2 effects). Conclusions Nutrition and health information presented on food labels has varying impacts on portion sizes consumed, from increased to decreased intake. Recommendations for future research include evaluating more recent food label types and achieving more consistent reporting standards.
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Affiliation(s)
- Hannah M Brown
- Faculty of Health and Medicine, School of Health Sciences, University of Newcastle, Callaghan, Australia.,Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and Medicine, University of Newcastle, Callaghan, Australia
| | - Megan E Rollo
- Faculty of Health and Medicine, School of Health Sciences, University of Newcastle, Callaghan, Australia.,Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and Medicine, University of Newcastle, Callaghan, Australia
| | - Nienke M de Vlieger
- Faculty of Health and Medicine, School of Health Sciences, University of Newcastle, Callaghan, Australia.,Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and Medicine, University of Newcastle, Callaghan, Australia
| | - Clare E Collins
- Faculty of Health and Medicine, School of Health Sciences, University of Newcastle, Callaghan, Australia.,Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and Medicine, University of Newcastle, Callaghan, Australia
| | - Tamara Bucher
- Faculty of Health and Medicine, School of Health Sciences, University of Newcastle, Callaghan, Australia.,Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and Medicine, University of Newcastle, Callaghan, Australia
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11
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Almiron-Roig E, Forde CG, Hollands GJ, Vargas MÁ, Brunstrom JM. A review of evidence supporting current strategies, challenges, and opportunities to reduce portion sizes. Nutr Rev 2019; 78:91-114. [DOI: 10.1093/nutrit/nuz047] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Abstract
Although there is considerable evidence for the portion-size effect and its potential impact on health, much of this has not been successfully applied to help consumers reduce portion sizes. The objective of this review is to provide an update on the strength of evidence supporting strategies with potential to reduce portion sizes across individuals and eating contexts. Three levels of action are considered: food-level strategies (targeting commercial snack and meal portion sizes, packaging, food labels, tableware, and food sensory properties), individual-level strategies (targeting eating rate and bite size, portion norms, plate-cleaning tendencies, and cognitive processes), and population approaches (targeting the physical, social, and economic environment and health policy). Food- and individual-level strategies are associated with small to moderate effects; however, in isolation, none seem to have sufficient impact on food intake to reverse the portion-size effect and its consequences. Wider changes to the portion-size environment will be necessary to support individual- and food-level strategies leading to portion control.
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Affiliation(s)
- Eva Almiron-Roig
- E. Almiron-Roig and M. Ángeles Vargas are with the Centre for Nutrition Research, University of Navarra, Pamplona, Spain
- E. Almiron-Roig is with the Navarra Institute for Health Research (IdiSNa), Pamplona, Spain
| | - Ciaran G Forde
- C.G. Forde is with the Clinical Nutrition Research Centre, Singapore Institute for Clinical Sciences, Singapore
| | - Gareth J Hollands
- G.J. Hollands is with the Behaviour and Health Research Unit, University of Cambridge, Cambridge, United Kingdom
| | - M Ángeles Vargas
- E. Almiron-Roig and M. Ángeles Vargas are with the Centre for Nutrition Research, University of Navarra, Pamplona, Spain
| | - Jeffrey M Brunstrom
- J.M. Brunstrom is with the Nutrition and Behaviour Unit, School of Psychological Science, and the National Institute for Health Research, Bristol Biomedical Research Centre, University Hospitals Bristol NHS Foundation Trust, University of Bristol, Bristol, United Kingdom
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12
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Brown HM, de Vlieger N, Collins C, Bucher T. The influence of front-of-pack nutrition information on consumers' portion size perceptions. Health Promot J Austr 2019; 28:144-147. [PMID: 27770836 DOI: 10.1071/he16011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 08/31/2016] [Indexed: 11/23/2022] Open
Abstract
Issue addressed Portion size guidance strategies have been suggested as an important component of weight management; therefore, the Health Star Rating (HSR) front-of-pack labels could influence consumers' portion-size decisions. However, this has not been investigated to date. This study aims to evaluate whether presenting energy content information and HSRs influences portion size self-selection of specific foods and meals. Methods Adults were randomly assigned to one of three experimental groups in this randomised controlled experiment. Each participant was given either a kJ/100g food label or a HSR label, or was given no information on nutrient composition. They were then asked to serve themselves an adequate portion of breakfast cereal (Kellogg's Nutri-Grain), fruit salad and chocolate, plus a three-component meal (chicken, fries and mixed vegetables). Portion serves and meal weights were compared between each experimental group using ANOVA and the discretionary foods were also compared with the Australian Guide to Healthy Eating (AGHE). Results Neither the kilojoule nor HSR information influenced the self-served portion size of foods or meal components. Mean self-served portion size of the discretionary foods were significantly greater than the standard serving sizes as specified in the AGHE. Conclusion Although food labels have the potential to assist consumers in making product choices, this study indicates that presenting nutrition information does not affect portion size decisions in young adults. So what? Strategies that assist consumers to choose appropriate portion sizes should be developed as a weight management tool.
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Affiliation(s)
- Hannah May Brown
- The University of Newcastle, Priority Research Centre for Physical Activity and Nutrition, University Drive, Callaghan NSW, Newcastle, NSW 2308, Australia
| | - Nienke de Vlieger
- The University of Newcastle, Priority Research Centre for Physical Activity and Nutrition, University Drive, Callaghan NSW, Newcastle, NSW 2308, Australia
| | - Clare Collins
- The University of Newcastle, Priority Research Centre for Physical Activity and Nutrition, University Drive, Callaghan NSW, Newcastle, NSW 2308, Australia
| | - Tamara Bucher
- The University of Newcastle, Priority Research Centre for Physical Activity and Nutrition, University Drive, Callaghan NSW, Newcastle, NSW 2308, Australia
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13
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Bucher T, Rollo ME, Smith SP, Dean M, Brown H, Sun M, Collins C. Position paper on the need for portion-size education and a standardised unit of measurement. Health Promot J Austr 2019; 28:260-263. [PMID: 27745570 DOI: 10.1071/he15137] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 08/31/2016] [Indexed: 11/23/2022] Open
Abstract
Large portion sizes contribute to weight gain in western societies. Portion-size interventions, aids and education can be effective in helping prevent weight gain, but consumers are unsure what appropriate portions are and express confusion about existing guidelines. A lack of clarity about suggested serving size recommendations is a major barrier to food portion-size control. Therefore, standardised measurement units and unambiguous terminologies are required. This position paper summarises the evidence regarding the impact and importance of portion-size education and estimation, and outlines strategies for improving consumer understanding and application of this through the development of an international food measurement system and a range of appropriate portion control tools. In this position paper, the authors call for the standardisation of food volume measurement terminologies, units, implementation recommendations, as well as consumer education. The target audience for this paper includes nutrition and behavioural researchers, policy makers, and stakeholders who potentially influence and implement changes in national food measurement systems, which in turn impact on consumer choice.
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Affiliation(s)
- Tamara Bucher
- Nutrition and Dietetics, School of Health Sciences, Faculty of Health and Medicine, Priority Research Centre in Physical Activity and Nutrition, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Megan E Rollo
- Nutrition and Dietetics, School of Health Sciences, Faculty of Health and Medicine, Priority Research Centre in Physical Activity and Nutrition, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Shamus P Smith
- School of Electrical Engineering and Computer Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Moira Dean
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast BT9 5AG, UK
| | - Hannah Brown
- Nutrition and Dietetics, School of Health Sciences, Faculty of Health and Medicine, Priority Research Centre in Physical Activity and Nutrition, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Mingui Sun
- Departments of Neurosurgery, Electrical and Computer Engineering, and Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Clare Collins
- Nutrition and Dietetics, School of Health Sciences, Faculty of Health and Medicine, Priority Research Centre in Physical Activity and Nutrition, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
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14
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Gifford JA, Gwynn JD, Hardy LL, Turner N, Henderson LC, Innes-Hughes C, Flood VM. Review of Short-Form Questions for the Evaluation of a Diet, Physical Activity, and Sedentary Behaviour Intervention in a Community Program Targeting Vulnerable Australian Children. CHILDREN (BASEL, SWITZERLAND) 2018; 5:E95. [PMID: 30011873 PMCID: PMC6069381 DOI: 10.3390/children5070095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 06/28/2018] [Accepted: 07/02/2018] [Indexed: 01/06/2023]
Abstract
Childhood obesity is associated with low socioeconomic status in developed countries, and community programs can deliver cost-effective obesity interventions to vulnerable children and adolescents at scale. Evaluating these programs in a low-cost, time-efficient, and culturally appropriate way with valid and reliable measures is essential to determining their effectiveness. We aimed to identify existing valid and reliable short-form instruments (≤50 items for diet, ≤15 items for physical activity) suitable for the assessment of change in diet, physical activity, and sedentary behaviour in an Australian obesity intervention program for children and adolescents aged 7⁻13 years from low socioeconomic groups, with a focus on Aboriginal and Torres Strait Islander children. Relevant electronic databases were searched, with a focus on Australian literature. Validity and/or reliability studies using diet instruments (5), physical activity/sedentary behaviour instruments (12), and diet and physical activity/sedentary behaviour instruments used with Aboriginal and Torres Strait Islander (3) children were identified. Seven questions on diet, one question on physical activity, and no questions on sedentary behaviour were recommended. These questions can be used for evaluation in community-based obesity programs among Australian children and adolescents, including those from low socioeconomic groups and Aboriginal and Torres Strait Islander children.
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Affiliation(s)
- Janelle A Gifford
- Faculty of Health Sciences, The University of Sydney, 75 East St, Lidcombe, NSW 2141, Australia.
| | - Josephine D Gwynn
- Faculty of Health Sciences, The University of Sydney, 75 East St, Lidcombe, NSW 2141, Australia.
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2005, Australia.
| | - Louise L Hardy
- Sydney School of Public Health, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Nicole Turner
- Centre for Rural and Remote Mental Health, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
- Hunter New England Local Health District, Locked Bag 1, New Lambton, NSW 2305, Australia.
| | - Lily C Henderson
- NSW Office of Preventive Health, Liverpool, NSW 1871, Australia.
| | | | - Victoria M Flood
- Faculty of Health Sciences, The University of Sydney, 75 East St, Lidcombe, NSW 2141, Australia.
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2005, Australia.
- Western Sydney Local Health District, Westmead, NSW 2145, Australia.
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15
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Fulkerson JA. Fast food in the diet: Implications and solutions for families. Physiol Behav 2018; 193:252-256. [PMID: 29630965 DOI: 10.1016/j.physbeh.2018.04.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 04/04/2018] [Accepted: 04/04/2018] [Indexed: 12/25/2022]
Abstract
Fast food is omnipresent in the United States (U.S.) and contributes to poor dietary quality and poor health among youth and adults alike. Children need adults to teach them good eating habits to attain and maintain good health by introducing them to healthful foods and being good role models. The fast food industry, through vast funds and advertising, contribute to challenges parents face to provide healthful foods for their families and thwart our best efforts to meet health goals. Research shows fast food consumption is influenced by lack of cooking confidence, time pressures, and perceptions of ease and convenience. We need practical strategies to help parents and children make healthier food choices. As a product of conference proceedings, this paper provides a non-exhaustive narrative summary of the fast food marketplace and marketing, the contributions of fast food to diet and health, struggles with healthful eating among families, and possible solutions of how we can help children and parents empower themselves to have healthier lives.
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Affiliation(s)
- Jayne A Fulkerson
- School of Nursing, University of Minnesota, 308 Harvard Street SE, Minneapolis, MN 55455, USA.
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16
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Bucher T, Weltert M, Rollo ME, Smith SP, Jia W, Collins CE, Sun M. The international food unit: a new measurement aid that can improve portion size estimation. Int J Behav Nutr Phys Act 2017; 14:124. [PMID: 28899402 PMCID: PMC5596841 DOI: 10.1186/s12966-017-0583-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 09/05/2017] [Indexed: 02/08/2023] Open
Abstract
Background Portion size education tools, aids and interventions can be effective in helping prevent weight gain. However consumers have difficulties in estimating food portion sizes and are confused by inconsistencies in measurement units and terminologies currently used. Visual cues are an important mediator of portion size estimation, but standardized measurement units are required. In the current study, we present a new food volume estimation tool and test the ability of young adults to accurately quantify food volumes. The International Food Unit™ (IFU™) is a 4x4x4 cm cube (64cm3), subdivided into eight 2 cm sub-cubes for estimating smaller food volumes. Compared with currently used measures such as cups and spoons, the IFU™ standardizes estimation of food volumes with metric measures. The IFU™ design is based on binary dimensional increments and the cubic shape facilitates portion size education and training, memory and recall, and computer processing which is binary in nature. Methods The performance of the IFU™ was tested in a randomized between-subject experiment (n = 128 adults, 66 men) that estimated volumes of 17 foods using four methods; the IFU™ cube, a deformable modelling clay cube, a household measuring cup or no aid (weight estimation). Estimation errors were compared between groups using Kruskall-Wallis tests and post-hoc comparisons. Results Estimation errors differed significantly between groups (H(3) = 28.48, p < .001). The volume estimations were most accurate in the group using the IFU™ cube (Mdn = 18.9%, IQR = 50.2) and least accurate using the measuring cup (Mdn = 87.7%, IQR = 56.1). The modelling clay cube led to a median error of 44.8% (IQR = 41.9). Compared with the measuring cup, the estimation errors using the IFU™ were significantly smaller for 12 food portions and similar for 5 food portions. Weight estimation was associated with a median error of 23.5% (IQR = 79.8). Conclusions The IFU™ improves volume estimation accuracy compared to other methods. The cubic shape was perceived as favourable, with subdivision and multiplication facilitating volume estimation. Further studies should investigate whether the IFU™ can facilitate portion size training and whether portion size education using the IFU™ is effective and sustainable without the aid. A 3-dimensional IFU™ could serve as a reference object for estimating food volume. Electronic supplementary material The online version of this article (10.1186/s12966-017-0583-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- T Bucher
- Department of Health Sciences and Technology, ETH Zurich, Universitätsrasse 16, 8092, Zurich, Switzerland. .,Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and medicine, The University of Newcastle, Newcastle, Australia.
| | - M Weltert
- Department of Health Sciences and Technology, ETH Zurich, Universitätsrasse 16, 8092, Zurich, Switzerland.,Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and medicine, The University of Newcastle, Newcastle, Australia
| | - M E Rollo
- Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and medicine, The University of Newcastle, Newcastle, Australia
| | - S P Smith
- School of Electrical Engineering and Computing, The University of Newcastle, Newcastle, Australia
| | - W Jia
- Departments of Neurosurgery, University of Pittsburgh, Pittsburgh, USA
| | - C E Collins
- Priority Research Centre for Physical Activity and Nutrition, Faculty of Health and medicine, The University of Newcastle, Newcastle, Australia
| | - M Sun
- Departments of Neurosurgery, University of Pittsburgh, Pittsburgh, USA
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17
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Fulkerson JA, Friend S, Horning M, Flattum C, Draxten M, Neumark-Sztainer D, Gurvich O, Garwick A, Story M, Kubik MY. Family Home Food Environment and Nutrition-Related Parent and Child Personal and Behavioral Outcomes of the Healthy Home Offerings via the Mealtime Environment (HOME) Plus Program: A Randomized Controlled Trial. J Acad Nutr Diet 2017; 118:240-251. [PMID: 28578900 DOI: 10.1016/j.jand.2017.04.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 04/04/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Research has demonstrated a significant positive association between frequent family meals and children's dietary intake; however, the promotion of healthful family meals has not been rigorously tested for key food environment and nutrition-related behavioral outcomes in a randomized trial. OBJECTIVE To describe family home food environment and nutrition-related parent and child personal and behavioral outcomes of the Healthy Home Offerings via the Mealtime Environment Plus program, the first rigorously tested family meals intervention targeting childhood obesity prevention. DESIGN Randomized controlled trial. Baseline, postintervention (12 months, 93% retention), and follow-up (21 months, 89% retention) data (surveys and dietary recalls) were collected. PARTICIPANTS/SETTING Children aged 8 to 12 years (N=160) and their parents were randomized to intervention (n=81) or control (n=79) groups. INTERVENTION The intervention included five parent goal-setting calls and 10 monthly sessions delivered to families in community settings that focused on experiential nutrition activities and education, meal planning, cooking skill development, and reducing screen time. MAIN OUTCOME MEASURES Family home food environment outcomes and nutrition-related child and parent personal and behavioral outcomes. STATISTICAL ANALYSES PERFORMED Analyses used generalized linear mixed models. Primary comparisons were contrasts between intervention and control groups at postintervention and follow-up, with adjustments for child age and parent education. RESULTS Compared with control parents, intervention parents showed greater improvement over time in scores of self-efficacy for identifying appropriate portion sizes, with significant differences in adjusted means at both post-intervention (P=0.002) and follow-up (P=0.01). Intervention children were less likely to consume at least one sugar-sweetened beverage daily at post-intervention than control children (P=0.04). CONCLUSIONS The Healthy Home Offerings via the Mealtime Environment Plus program involved the entire family and targeted personal, behavioral, and environment factors important for healthful changes in the home food environment and children's dietary intake. The intervention improved two nutrition-related behaviors and this may inform the design of future family meal interventions.
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18
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Rollo ME, Bucher T, Smith SP, Collins CE. ServAR: An augmented reality tool to guide the serving of food. Int J Behav Nutr Phys Act 2017; 14:65. [PMID: 28499433 PMCID: PMC5429537 DOI: 10.1186/s12966-017-0516-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 04/22/2017] [Indexed: 02/04/2023] Open
Abstract
Background Accurate estimation of food portion size is a difficult task. Visual cues are important mediators of portion size and therefore technology-based aids may assist consumers when serving and estimating food portions. The current study evaluated the usability and impact on estimation error of standard food servings of a novel augmented reality food serving aid, ServAR. Methods Participants were randomised into one of three groups: 1) no information/aid (control); 2) verbal information on standard serving sizes; or 3) ServAR, an aid which overlayed virtual food servings over a plate using a tablet computer. Participants were asked to estimate the standard serving sizes of nine foods (broccoli, carrots, cauliflower, green beans, kidney beans, potato, pasta, rice, and sweetcorn) using validated food replicas. Wilcoxon signed-rank tests compared median served weights of each food to reference standard serving size weights. Percentage error was used to compare the estimation of serving size accuracy between the three groups. All participants also performed a usability test using the ServAR tool to guide the serving of one randomly selected food. Results Ninety adults (78.9% female; a mean (95%CI) age 25.8 (24.9–26.7) years; BMI 24.2 (23.2–25.2) kg/m2) completed the study. The median servings were significantly different to the reference portions for five foods in the ServAR group, compared to eight foods in the information only group and seven foods for the control group. The cumulative proportion of total estimations per group within ±10%, ±25% and ±50% of the reference portion was greater for those using ServAR (30.7, 65.2 and 90.7%; respectively), compared to the information only group (19.6, 47.4 and 77.4%) and control group (10.0, 33.7 and 68.9%). Participants generally found the ServAR tool easy to use and agreed that it showed potential to support optimal portion size selection. However, some refinements to the ServAR tool are required to improve the user experience. Conclusions Use of the augmented reality tool improved accuracy and consistency of estimating standard serve sizes compared to the information only and control conditions. ServAR demonstrates potential as a practical tool to guide the serving of food. Further evaluation across a broad range of foods, portion sizes and settings is warranted.
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Affiliation(s)
- Megan E Rollo
- School of Health Sciences, Priority Research Centre for Physical Activity & Nutrition, ATC Building, University of Newcastle, Callaghan, NSW, 2308, Australia.
| | - Tamara Bucher
- School of Health Sciences, Priority Research Centre for Physical Activity & Nutrition, ATC Building, University of Newcastle, Callaghan, NSW, 2308, Australia.,Institute for Environmental Decisions, ETH Zurich, Zurich, Switzerland
| | - Shamus P Smith
- School of Electrical Engineering and Computing, University of Newcastle, Callaghan, Australia
| | - Clare E Collins
- School of Health Sciences, Priority Research Centre for Physical Activity & Nutrition, ATC Building, University of Newcastle, Callaghan, NSW, 2308, Australia
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19
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Zheng M, Wu JHY, Louie JCY, Flood VM, Gill T, Thomas B, Cleanthous X, Neal B, Rangan A. Typical food portion sizes consumed by Australian adults: results from the 2011-12 Australian National Nutrition and Physical Activity Survey. Sci Rep 2016; 6:19596. [PMID: 26786684 PMCID: PMC4726402 DOI: 10.1038/srep19596] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 12/01/2015] [Indexed: 01/09/2023] Open
Abstract
Considerable evidence has associated increasing portion sizes with elevated obesity prevalence. This study examines typical portion sizes of commonly consumed core and discretionary foods in Australian adults, and compares these data with the Australian Dietary Guidelines standard serves. Typical portion sizes are defined as the median amount of foods consumed per eating occasion. Sex- and age-specific median portion sizes of adults aged 19 years and over (n = 9341) were analysed using one day 24 hour recall data from the 2011–12 National Nutrition and Physical Activity Survey. A total of 152 food categories were examined. There were significant sex and age differences in typical portion sizes among a large proportion of food categories studied. Typical portion sizes of breads and cereals, meat and chicken cuts, and starchy vegetables were 30–160% larger than the standard serves, whereas, the portion sizes of dairy products, some fruits, and non-starchy vegetables were 30–90% smaller. Typical portion sizes for discretionary foods such as cakes, ice-cream, sausages, hamburgers, pizza, and alcoholic drinks exceeded the standard serves by 40–400%. The findings of the present study are particularly relevant for establishing Australian-specific reference portions for dietary assessment tools, refinement of nutrition labelling and public health policies.
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Affiliation(s)
- Miaobing Zheng
- School of Molecular Bioscience, Charles Perkins Centre, The University of Sydney, Sydney NSW Australia.,The George Institute for Global Health, Sydney Medical School, The University of Sydney, Camperdown NSW Australia
| | - Jason H Y Wu
- The George Institute for Global Health, Sydney Medical School, The University of Sydney, Camperdown NSW Australia
| | - Jimmy Chun Yu Louie
- School of Molecular Bioscience, Charles Perkins Centre, The University of Sydney, Sydney NSW Australia
| | - Victoria M Flood
- Faculty of Health Sciences, The University of Sydney, Sydney NSW Australia.,St Vincent's Hospital, Darlinghurst NSW Australia
| | - Tim Gill
- Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders, The University of Sydney, Sydney NSW Australia
| | - Beth Thomas
- National Heart Foundation of Australia, Melbourne VIC Australia
| | | | - Bruce Neal
- The George Institute for Global Health, Sydney Medical School, The University of Sydney, Camperdown NSW Australia
| | - Anna Rangan
- School of Molecular Bioscience, Charles Perkins Centre, The University of Sydney, Sydney NSW Australia
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20
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Dawczynski C, Kleber ME, März W, Jahreis G, Lorkowski S. Saturated fatty acids are not off the hook. Nutr Metab Cardiovasc Dis 2015; 25:1071-1078. [PMID: 26626084 DOI: 10.1016/j.numecd.2015.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 08/15/2015] [Accepted: 09/21/2015] [Indexed: 12/21/2022]
Abstract
A recent meta-analysis by Chowdhury et al. (2014) has disclaimed the association between coronary artery diseases and either circulating blood levels or the intake of total saturated fatty acids (SFA). Scrutiny revealed that two of the eight studies included in the meta-analysis focused on the proportion of pentadecanoic acid (C15:0) and heptadecanoic acid (C17:0) and their impact on cardiovascular disease (CVD) risk. These odd-chain fatty acids are markers for milk or ruminant fat intake. Both studies indicated inverse associations between milk-fat intake and first-ever myocardial infarction. Neither of the two studies described the association between total circulating blood SFA on coronary outcomes. In contrast to the cardioprotective effects of dairy consumption, we expected that an elevated intake of palmitic acid (C16:0) and stearic acid (C18:0) de novo may raise CVD risk. Thus, it is of particular importance to differentiate the effects of individual circulating SFA on cardiovascular outcomes. Excluding the studies that evaluated the association of fatty acids from milk fat and cardiovascular outcomes revealed a positive association of total SFA blood levels and coronary outcome (RR 1.21, CI 1.04-1.40). Therefore, results obtained from studies of C15:0 and C17:0 cannot be mixed with results from studies of other SFA because of the opposite physiological effects of regular consumption of foods rich in C16:0 and C18:0 compared to high intake of milk or ruminant fat. In our opinion, it is vital to analyze the impact of individual SFA on CVD incidence in order to draw prudent conclusions.
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Affiliation(s)
- C Dawczynski
- Institute of Nutrition, Friedrich Schiller University Jena, Germany; Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Germany.
| | - M E Kleber
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Germany; Vth Department of Medicine (Nephrology, Hypertensiology, Endocrinology, Diabetology, Rheumatology), Medical Faculty Mannheim, University of Heidelberg, Germany
| | - W März
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Germany; Vth Department of Medicine (Nephrology, Hypertensiology, Endocrinology, Diabetology, Rheumatology), Medical Faculty Mannheim, University of Heidelberg, Germany; Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria; Synlab Academy, Synlab Services GmbH, Mannheim, Germany
| | - G Jahreis
- Institute of Nutrition, Friedrich Schiller University Jena, Germany; Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Germany
| | - S Lorkowski
- Institute of Nutrition, Friedrich Schiller University Jena, Germany; Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Germany.
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