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Effects of 1-year weight loss intervention on abdominal skeletal muscle mass in Japanese overweight men and women

Background and Objectives: Limited information is available on how weight loss intervention programs affect skeletal muscle mass especially in trunk. Methods and Study Design: A total of 235 overweight Japanese men and women aged 40-64 years with a body mass index of 28.0 to 44.8 kg/m^2 participated in this randomized controlled intervention study. They were randomly divided into a lifestyle intervention group and control group. Before and after the one-year lifestyle intervention for weight loss an abdominal transverse image was acquired by computed tomography. The cross-sectional areas (CSAs) of visceral fat, subcutaneous fat, and skeletal muscle of rectus abdominis, abdominal oblique, iliopsoas, and erector spinae muscle were calculated. Results: The body weight changed by approximately -5% in the intervention groups. The corresponding values for subcutaneous fat and visceral fat CSAs were -10.8 to -17.5% in both sexes. The reductions observed in skeletal muscle CSAs were significantly less (-6.0% and -7.2% in the men and women intervention groups respectively) than those in fat tissue CSAs. The CSA of each of the four skeletal muscle groups also significantly decreased; however, after adjustments for body weight at each time point, only reductions in the iliopsoas muscle in both sex and abdominal oblique muscles in men remained significant. Conclusions: The lifestyle weight loss intervention might reduce the relative amount of the abdominal skeletal muscles especially in iliopsoas muscle.

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Eating rate as risk for body mass index and waist circumference obesity with appropriate confounding factors: a cross-sectional analysis of the Shizuoka- Sakuragaoka J-MICC Study

Background and Objectives: The relationship between eating rate (ER) and increased risk of obesity in relation to body mass index (BMI, i.e., total body fat) and waist circumference (WC, i.e., abdominal fat) has not been fully examined. Considering gender differences, we identified unknown confounding factors (CFs) for each risk, and then assessed the two actual obesity risks, adjusting for the CFs. Methods and Study Design: Using a questionnaire, we collected data for ER (slow, normal as ＂reference,＂ and fast) and related factors and measured BMI and WC for 3,393 men and 2,495 women. Using multiple logistic regression models, odds ratios (ORs) and their 95% confidence intervals (CIs) were estimated adjusting for both conventional and candidate CFs. Results: The following factors were identified as appropriate CFs, but were differed between the two obesity types: fast food consumption in both genders, sleep duration and restaurants/food service use in men, and family structure and packed lunch in women. In men, actual risks of BMI obesity and WC obesity were negatively associated with slow ER (ORs and 95% CIs; 0.70 and 0.52-0.96, and 0.69 and 0.50-0.96), but positively associated with fast ER (1.48 and 1.25-1.76, and 1.45 and 1.21-1.74). In women, those risks were positively related to fast ER (1.78 and 1.39-2.26, and 1.34 and 1.11-1.61). Conclusions: For both BMI obesity risk and WC obesity risk, we conclude that slow and fast ER were related to decreased and increased risks when adjusted for appropriate CFs, which differed by gender and the obesity type.

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Self-reported behavior of eating quickly is correlated with visceral fat area in Japanese non-obese adults

Background and Objectives: This cross-sectional study investigated the relationship between eating speed and fat accumulation in Japanese non-obese adults. Methods and Study Design: In total, 381 non-obese participants aged 35-74 years underwent a health checkup including fat distribution. All participants underwent magnetic resonance imaging to quantify visceral fat area (VFA) and subcutaneous fat area (SFA). Information on eating speed was obtained using a self-administrated questionnaire. Results: The numbers of participants with self-reported behavior of eating slowly, medium, or quickly were 24 (6.3%), 180 (47.2%), and 177 (46.5%), respectively. The prevalence of VFA ≥100 cm^2 was higher in the eating quickly group than in the eating slowly (p＜0.05) or medium groups (p＜0.05). On the other hand, no significant differences in SFA ≥100 cm^2 were observed between groups. In addition, multiple stepwise regression analysis showed that eating quickly was positively correlated with VFA (standard β=0.068, p＜0.05), but not with SFA. Conclusions: Although eating quickly was positively correlated with bigger VFA in Japanese non-obese adults, no associations were found between eating speed and SFA.

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Effects of skipping breakfast on dietary intake and circulating and urinary nutrients during pregnancy

Background and Objectives: More than 20% of pregnant Japanese women regularly skip breakfast, thereby resulting in a low intake of several nutrients that are required for fetal development and prevention of pregnancy complications. However, whether skipping breakfast affects circulating levels of these nutrients remains unclear. We investigated whether skipping breakfast during pregnancy was associated with decreases in dietary intake and circulating and urinary levels of several nutrients, including fatty acids and vitamins. Methods and Study Design: This cross-sectional study was conducted at a university hospital in Tokyo, Japan, between June and October 2010. Nutrient intakes were assessed using a validated diet history questionnaire. Blood and 24-hour urinary samples were collected for assessing circulating and urinary excretion levels of nutrients. Skipping breakfast was defined as forgoing breakfast including a staple food, such as rice or bread, two or more times per week. Multiple linear regression analyses were used to compare nutrient levels between breakfast skippers and non-skippers after adjusting for confounders. Results: Of 97 healthy pregnant women in the second trimester, 37 (38.1%) skipped breakfast two or more times per week. In multiple linear regression analysis, breakfast skippers had significant lower energy-adjusted intakes of protein than non-skippers (p=0.019). In addition, breakfast skippers had significantly lower levels of plasma eicosapentaenoic acid (p=0.008), plasma docosahexaenoic acid (p=0.027), serum β- carotene (p=0.013), urinary urea nitrogen (p=0.027), and urinary potassium (p=0.006), compared to non-skippers. Conclusions: Healthcare professionals need to suggest effective strategies for encouraging breakfast skippers to have breakfast regularly and to increase the intake of these nutrients.

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The dietary intake of two groups of lactating women in Shanghai during the puerperium

Background and Objectives: Lactation is a time of increased nutritional requirements for mothers, and inadequate nutrient intake may have a detrimental effect on a woman's nutritional status. To investigate the dietary intake of two groups of women in Shanghai during the traditional confinement period. Methods and Study Design: Two groups of women (1) a community dwelling sample (n=92); (2) residents in a Maternity Care Centre (MCC) (n=30), kept a prospective dietary record which was complemented by photographing. This data collection was done on a single day on three occasions in the community group, and for three days on five occasions in the MCC one. The mean nutrient intakes of the two groups were compared at common time points to dietary reference intakes, and the food intake was compared to dietary guidelines. Results: Over half of this population had high body mass indices (BMIs) which reported that an excessive proportion of calories had come from fat intake. The mean intakes of sodium were higher than the recommended. Fruit, vegetable, bean, tuber, and milk intakes were lower than the recommendations. Over 70% of the women failed to meet the Estimated Average Requirement (EAR) for calcium. A notable proportion of all women failed to meet the EAR for vitamin C, thiamin, and riboflavin. Dietary fiber intakes were low, with a group mean intake value less than half the Adequate Intake (AI). Conclusions: This study on dietary intakes indicates nutritional intake issues may exist among lactating women in Shanghai, particularly in community-dwelling women.

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Prevalence of and factors associated with thiamin deficiency in obese Thai children

Background and Objectives: Obesity is a state that results from excessive energy consumption, and obese people often have micronutrient deficiencies. The objective of this study was to investigate the prevalence of and factors associated with thiamin deficiency in obese Thai children. Methods and Study Design: This cross-sectional study was conducted at Faculty of Medicine Siriraj Hospital, Mahidol University during 2014 to 2017. Children aged 7-15 years old with exogenous obesity were recruited. Symptoms and signs of thiamin deficiency were evaluated. Erythrocyte transketolase activity was measured by thiamin pyrophosphate effect (TPPE), with ≥15% indicating thiamin deficiency. Dietary consumption from a 5-day food diary and food frequency questionnaire was calculated by INMUCAL software. Other medical complications of obesity were also evaluated. Results: One hundred and twenty-four subjects (81 males and 43 females) were enrolled, with a mean age of 10.9 years. Fifty-two subjects had abnormal TPPE for an overall prevalence of thiamin deficiency of 42%. Manifestations of thiamin deficiency included numbness, weakness, and calf muscle cramping. TPPE test results were correlated with at least one symptom or a sign of thiamin deficiency (p＜0.01). The thiamin-deficient group tended to have higher proportion of morbid obesity and larger waist circumferences than thiamin-sufficient group. The thiamin deficient group tended to consume less thiamin in relation to energy intake than the thiamin-sufficient group (p=0.057). Items of foods consumed were statistically indistinguishable between groups. Conclusions: The results of this study revealed a 42% prevalence of thiamin deficiency among obese Thai children, and most of those cases were subclinical.

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Dietary exposure to sulfites in Indonesians

Background and Objectives: Information on dietary exposure to sulfites as preservative in consumer is needed as a scientific base for food safety policy making. The objective of this research was to conduct dietary exposure assessment to sulfites in consumers by using a deterministic method. Methods and Study Design: The scope of work was identification of food products containing sulfites, determination of food consumption data from the individual food consumption survey report of 2014, determination of sulfite concentration in food, and calculation of sulfite exposure. Results: 3,428 (9%) of 37,613 food products registered in National Agency of Drug and Food Control (2012-2015) may contain sulfite. The most used sulfite in food products was sodium metabisulfite. The mean of food containing sulfite consumption in all age groups was 131.4 g/person/day. The estimation of total exposure for all age groups were 0.27 mg/kgBW/day (38.6% ADI), 0.25 mg/kgBW/day (35.7% ADI) and 0.08 mg/kgBW/day (11.4% ADI) by using concentrations of Maximum Permitted Limit, reported maximum used level and reported maximum product test result, respectively. Food category contributed to the highest exposure in all age groups was spices, condiments, vinegar, powder or mixture for soups and broths, and other soy sauce category. Conclusions: The highest total exposure to sulfites was found in 0-59 month age group. The highest total exposure for the MPL (0.79 mg/kgBW/day) and the reported maximum used level (0.73 mg/kgBW/day) exceeded 112.9% ADI and 104.3% ADI, respectively while the exposure using reported maximum test result was still below ADI (0.25 mg/kgBW/day or 35.7% ADI).

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Quantitative estimates of dietary intake in households of South Tarawa, Kiribati

Background and Objectives: Malnutrition is a public health problem especially among the Pacific Small Island developing nations. This study assessed malnutrition with dietary intakes in households of South Tarawa, Kiribati, a West Pacific Island Nation State. Methods and Study Design: A cross-sectional community-based study design was used. One hundred and sixty-one households were selected from Betio, Bikenibeu and Teaorereke towns using a systematic random sampling method. About 35% each of the households was selected from Bikenebue and Besio while 30.4% was selected from Teaoraeke. Family (including children) dietary surveys including 24- hour dietary recall were administered to assess adequacy of nutrient intakes and dietary diversity using Household Diet Diversity Scores. A 3-day weighed food record was collected on a sub-sample. Data were analysed using FoodWorks Pro 8 for nutrient intake and Statistical Product for Service Solution (SPSS) version 21 for descriptive statistics. Results: Sixty-one percent of the subjects had the lowest dietary diversity, 36.3% had a medium dietary diversity and only 2.7% had the highest dietary diversity. Based on the weighed food record results (n=29), male subjects of all age groups had adequate intakes of riboflavin, niacin, vitamin C, magnesium, iron and zinc, but had high intakes of protein and sodium; and low intakes of potassium and calcium. Female subjects had adequate intakes of vitamin C, iron, magnesium and zinc, but had high intakes of protein and sodium; and low intakes of potassium and calcium. Conclusions: Across all groups, 61% of the adult Kiribati population studied showed low dietary diversity, and a high prevalence of multiple micronutrient deficiencies.

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Longitudinal nutritional changes in aging Australian women

Background and Objectives: The importance of diet for the maintenance of health during aging is attracting a growing body of research interest. Given dietary intakes, along with BMI, are substantial contributors to disease burden, this study aimed to investigate prospective changes in dietary patterns and nutrient intakes in a sample of mid to late-life women over 14 years. Methods and Study Design: Participants were from the Women's Healthy Ageing Project (WHAP); a longitudinal cohort of Australian-born women within the Melbourne metropolitan area. 173 participants were included in this analysis, their mean age in 1998 was 55 years (range 51-62) and in 2012 was 70 years (range 66-76). Diet was assessed using the Dietary Questionnaire for Epidemiological Studies Version 2 in 1998 and 2012. Nutritional intakes, Dietary Inflammatory Index (DII®) scores, Mediterranean Diet (MD) scores, sociodemographic and physical measures were calculated for all participants at both time points. Results: Energy intake was found to significantly decrease over time (p＜0.005). Energy-adjusted (i.e., energy density) total fat, saturated fat, monounsaturated fat and cholesterol intakes increased over time (all p＜0.002), while energy-adjusted and absolute carbohydrate intake decreased (p＜0.002). Adherence to the MD decreased over time (p＜0.001) whilst DII scores increased slightly over time, although this result was not significant. Conclusions: This study shows significant changes in the intake of energy and several nutrients in a cohort of aging Australian women in the Melbourne metropolitan area over a period of 14 years. Between 1998 and 2012, changes in indices reflecting overall diet were consistently in the direction of a poorer diet.

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Soy product consumption and type 2 diabetes among adults in Beijing, China

Background and Objectives: To examine the association between the frequency of soy products consumption and type 2 diabetes or impaired fasting glucose. Methods and Study Design: A cross-sectional study of 3,314 subjects aged 18-79 years was conducted in Beijing, China in 2016. Consumption of soy products was assessed by a validated food-frequency questionnaire and examined with type 2 diabetes or impaired fasting glucose risk using multiple logistic regression. Results: 509 of the 3,314 participants (15.4%) included in the current analyses had diabetes, and among them 453 were diabetes uncontrolled. The prevalence of impaired fasting glucose was 11.9%. After adjustment for demographic variables, smoke, alcohol, physical activity and BMI, soy products consumption was inversely associated with type 2 diabetes risk and impaired fasting glucose. ORs and 95% CI for diabetes uncontrolled across soy products consumption frequencies (monthly, weekly, daily) were 1 (reference), 0.819 (0.627-1.070), 0.605 (0.387, 0.944) respectively (p_(trend)=0.033). ORs (95% CI) for impaired fasting glucose across soy products consumption frequencies were 1 (reference), 0.873 (0.661-1.152), 0.616 (0.385, 0.985) respectively (p_(trend)=0.046). Conclusions: Consuming soy products daily may decrease the risk of diabetes and impaired fasting glucose.