The development and testing of a food portion photograph book for use in an African population

Venter, C S; MacIntyre, Una Elizabeth; Vorster, Hester H.

doi:10.1046/j.1365-277x.2000.00228.x

Cited by 104 publications

(151 citation statements)

References 19 publications

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“…more favourable nutrient intake (positive impact), these effects were only measured in the short term and usually in the laboratory setting (88)(89)(90)(91)(92)(93)(94)(95)(96)(97) . A follow-up study conducted 3 months after initial training about SS showed that the immediate positive impact had not been maintained (96) .…”

Section: Consumer Understandingmentioning

confidence: 99%

Serving size guidance for consumers: is it effective?

et al. 2012

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Larger portion sizes (PS) may be inciting over-eating and contributing to obesity rates. Currently, there is a paucity of data on the effectiveness of serving size (SS) guidance. The aims of the present review are to evaluate SS guidance; the understanding, usability and acceptability of such guidance, its impact on consumers and potential barriers to its uptake. A sample of worldwide SS guidance schemes (n 87) were identified using targeted and untargeted searches, overall these were found to communicate various inconsistent and often conflicting messages about PS selection. The available data suggest that consumers have difficulty in understanding terms such as ‘portion size’ and ‘serving size’, as these tend to be used interchangeably. In addition, discrepancies between recommended SS and those present on food labels add to the confusion. Consumers generally understand and visualise SS best when expressed in terms of household measures rather than actual weights. Only a limited number of studies have examined the direct impact of SS guidance on consumer behaviour with equivocal results. Although consumers recognise that guidance on selecting SS would be helpful, they are often unwilling to act on such guidance. The challenge of achieving consumer adherence to SS guidance is formidable due to several barriers including chronic exposure to larger PS, distorted consumption norms and perceptions, the habit of ‘cleaning one's plate’ and language barriers for ethnic minorities. In conclusion, the impact of SS guidance on consumers merits further investigation to ensure that future guidance resonates with consumers by being more understandable, usable and acceptable.

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Section: Consumer Understandingmentioning

confidence: 99%

Serving size guidance for consumers: is it effective?

et al. 2012

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“…Standard household measuring utensils, rulers and validated food photographs of typical South African foods (Venter et al, 2000) were used to quantify food portion sizes. The recorded quantities of food consumed were converted to gram weights using the Medical Research Council Food Quantities Manual (Langenhoven et al, 1991a).…”

Section: Dietary Assessmentmentioning

confidence: 99%

Micronutrient dilution associated with added sugar intake in elderly black South African women

2005

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Objectives: To investigate the association between added sugar and macronutrient and micronutrient intakes, and to assess whether added sugar intake is related to biochemical indices of nutritional status, Mini-Nutritional Assessment (MNA) score, body mass index (BMI) and performance on physical function tests. Design: A cross-sectional, analytical study. Setting and subjects: Convenient sample of 285 institutionalised and community-dwelling black South African men and women aged 60 þ y. Methods: An interviewer-administered 24-h dietary recall and MNA were performed. Serum albumin, vitamin B 12 , ferritin, cholesterol, haemoglobin, red blood cell (RBC) folate and plasma vitamin C were measured. Handgrip strength, BMI, 'sit-tostand' and 'get-up-and-go' tests were measured. Outcome variables were analysed according to tertiles of added sugar, in grams and as a percentage of total energy (% E). Results: In each tertile of sugar intake, mean MNA score fell in the 'at-risk' classification. In women, energy, protein, % E protein, fibre, thiamin, riboflavin, niacin, vitamin B6, folate, pantothenic acid, biotin, vitamin C, calcium, iron, magnesium, phosphorus, zinc, copper and selenium intake were significantly lowest in subjects in the highest % E sugar tertile. In men, no differences were found for micronutrient intake according to tertiles of total added sugar or % E added sugar. Physical function declined with increasing sugar intake, and suboptimal RBC folate and plasma ascorbic acid status was associated with increasing sugar intake (in women). No relationship was found between added sugar intake and the very high prevalence (65%) of obesity in women. Conclusion: A nutrient-diluting effect of added sugars intake was demonstrated in elderly black South African women. Further studies in this population are required in order to develop food-based dietary guidelines, which include messages on added sugar intake.

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“…Kirkcaldy-Hargreaves et al (18) used life-sized colour pictures and found that their validity was similar to or slightly higher than that for life-sized food drawings, soft plastic food models and models with abstract shapes. In South Africa, Venter et al (15) tested near life-size (A4) photographs and found relatively good results: 68 % of the estimates were within 610 % of the actual portion size. However, due to the differences in the experimental Table 4 Proportion of participants classified in the same or opposite thirds of the distribution of estimated and actual food consumption and proportion of participants whose estimates were design, it is difficult to compare the results with the present study.…”

Section: Discussionmentioning

confidence: 99%

Food photographs in portion size estimation among adolescent Mozambican girls

Korkalo

Erkkola

Fidalgo³

et al. 2012

Public Health Nutr.

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Objective: To assess the validity of food photographs in portion size estimation among adolescent girls in Mozambique. The study was carried out in preparation for the larger ZANE study, which used the 24 h dietary recall method. Design: Life-sized photographs of three portion sizes of two staple foods and three sauces were produced. Participants ate weighed portions of one staple food and one sauce. After the meal, they were asked to estimate the amount of food with the aid of the food photographs. Setting: Zambezia Province, Mozambique. Subjects: Ninety-nine girls aged 13-18 years. Results: The mean differences between estimated and actual portion sizes relative to the actual portion size ranged from 219 % to 8 % for different foods. The respective mean difference for all foods combined was 25 % (95 % CI 212, 2 %). Especially larger portions of the staple foods were often underestimated. For the staple foods, between 62 % and 64 % of the participants were classified into the same thirds of the distribution of estimated and actual food consumption and for sauces, the percentages ranged from 38 % to 63 %. Bland-Altman plots showed wide limits of agreement. Conclusions: Using life-sized food photographs among adolescent Mozambican girls resulted in a rather large variation in the accuracy of individuals' estimates. The ability to rank individuals according to their consumption was, however, satisfactory for most foods. There seems to be a need to further develop and test food photographs used in different populations in Sub-Saharan Africa to improve the accuracy of portion size estimates.

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The development and testing of a food portion photograph book for use in an African population

Cited by 104 publications

References 19 publications

Serving size guidance for consumers: is it effective?

Serving size guidance for consumers: is it effective?

Micronutrient dilution associated with added sugar intake in elderly black South African women

Food photographs in portion size estimation among adolescent Mozambican girls

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