Displaying publications 41 - 60 of 929 in total

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  1. Wong TH, Das Gupta E, Radhakrishnan AK, Gun SC, Chembalingam G, Yeap SS
    Int J Rheum Dis, 2018 May;21(5):992-1000.
    PMID: 28217867 DOI: 10.1111/1756-185X.13048
    AIM: Vitamin D3 [25(OH)D] has been shown to be important in bone health and can influence rheumatoid arthritis (RA) disease activity. Vitamin D-binding protein (VDBP) levels vary with race and may modulate 'bioavailable' levels of 25(OH)D. The aim of this study was to explore the relationships between 25(OH)D, VDBP and clinical factors on bone mineral density (BMD) in a group of multi-ethnic Malaysian RA patients and healthy controls.

    METHODS: A cross-sectional study of 77 female RA patients and 29 controls was performed. Serum 25(OH)D was measured using the Elecsys® Vitamin D total assay. Serum VDBP was measured using a Quantikine® enzyme-linked immunosorbent assay kit. BMD was assessed using dual-energy X-ray absorptiometry (DXA).

    RESULTS: Overall, mean 25(OH)D levels were 42.66 ± 21.75 nmol/L with no significant difference between RA patients and controls. 25(OH)D levels were significantly higher in Chinese, compared to Malay/Indian subjects. In RA patients, menopausal status and body mass index (BMI) were significantly associated with BMD but not 25(OH)D or RA Disease Activity Score of 28 joints (DAS28). There was no significant correlation between 25(OH)D and DAS28, even after correction for menopausal status and BMI. VDBP levels were not significantly different between the races and did not significantly correlate with BMD, 25(OH)D overall, or DAS28 in RA patients.

    CONCLUSIONS: In Malaysian RA patients, menopausal status and BMI were more important influences on BMD than 25(OH)D or RA disease activity. The utility of measuring VDBP levels in this population remains uncertain.
    Study site: Rheumatology clinic, Hospital Tuanku Jaafar, Seremban, Negeri Semblance; Klinik Pakar Puchong, Puchong, Kuala Lumpur, Malaysia
    Matched MeSH terms: Body Mass Index
  2. Eu CW, Ajit Singh V, Yasin NF
    J Orthop Surg (Hong Kong), 2019 5 16;27(2):2309499019847232.
    PMID: 31084248 DOI: 10.1177/2309499019847232
    PURPOSE: This study aims to determine the prevalence of malnutrition among orthopaedic oncology patients with malignant tumour during preoperative period.

    METHODS: This is a prospective observational study involving patients from the orthopaedic oncology unit who were undergoing surgery. They were assessed with Patient Generated Subjective Global Assessment (PG-SGA), Malnutrition Screening Tool (MST) and 3-minute Nutritional Screening (3MinNS) questionnaires. Anthropometric data such as body mass index, mid upper arm circumference (MUAC) and blood parameters such as serum albumin, total lymphocyte count and haemoglobin were also investigated. Patients were then followed up for 3 months. Post-operative complications were divided into infectious and non-infectious groups. Length of stay and unplanned readmission were also documented.

    RESULTS: Prevalence of malnutrition ranged from 13.3% to 45.8% under different nutritional assessment methods. Patients who were determined as malnourished were significantly associated with both infectious and non-infectious post-operative complications ( p < 0.001). PG-SGA and 3MinNS values were also significant in univariate and multivariate analysis, respectively. Low serum albumin (<35 g/L) was associated with post-operative infectious complications, especially surgical site infection ( p < 0.001), prolonged hospital stay ( p = 0.009) and unplanned readmission ( p = 0.017). 3MinNS and Charlson Comorbidity Index were predictive of non-infectious complications, whereas serum albumin and the presence of metastasis were predictive of infectious complications.

    CONCLUSION: This pilot study of patients with soft tissue and bone sarcoma of upper and lower limbs showed that malnutrition is a significant independent factor related to infectious and non-infectious complications which leads to unplanned readmission and prolonged length of stay. Periodic screening using the PG-SGA or 3MinNS questionnaires, MUAC and evaluation of serum albumin levels is recommended during clinic session and pre-surgery assessment rounds to identify those predisposed to malnutrition and help in reducing incidence of post-operative complications.

    Matched MeSH terms: Body Mass Index
  3. Rajandram R, Perumal K, Yap NY
    Transl Androl Urol, 2019 May;8(Suppl 2):S138-S146.
    PMID: 31236331 DOI: 10.21037/tau.2018.11.10
    Obesity is a recognized risk factor for renal cell carcinoma (RCC) the commonest form of kidney cancer. Both obesity and RCC are serious diseases with increasing incidence yearly. This review examined certain obesity associated measurements and adipokines as detection/prognostic indicators for RCC. The obesity related measurements such as body mass index (BMI), waist circumstance (WC), waist-hip ratio (WHR) in predicting RCC are valid when used in conjunction with other risk factors such as age and sex or with histological findings. The adipokine adiponectin holds promising outcomes as a predictive marker in assessing the risk of developing RCC. In addition, tissue leptin/leptin receptor may be a distinguishing marker for RCC subtypes. However, circulating leptin may not be a suitable detection or prognostic biomarker for RCC. The other less investigated adipokines; omentin, visfatin, apelin and resistin are also expressed in RCC but their prognostic capabilities are still inconclusive. BMI, WC and adipokines may be useful additions in a nomogram which includes TNM staging and pathological grading system to detect, confirm and follow-up RCC cases.
    Matched MeSH terms: Body Mass Index
  4. Yong RY, Mustaffa SB, Wasan PS, Sheng L, Marshall CR, Scherer SW, et al.
    Hum Mutat, 2016 Jul;37(7):669-78.
    PMID: 27068483 DOI: 10.1002/humu.22996
    The human amylase gene locus at chromosome 1p21.1 is structurally complex. This region contains two pancreatic amylase genes, AMY2B, AMY2A, and a salivary gene AMY1. The AMY1 gene harbors extensive copy number variation (CNV), and recent studies have implicated this variation in adaptation to starch-rich diets and in association to obesity for European and Asian populations. In this study, we showed that by combining quantitative PCR and digital PCR, coupled with careful experimental design and calibration, we can improve the resolution of genotyping CNV with high copy numbers (CNs). In two East Asian populations of Chinese and Malay ethnicity studied, we observed a unique non-normal distribution of AMY1 diploid CN genotypes with even:odd CNs ratio of 4.5 (3.3-4.7), and an association between the common AMY2A CN = 2 genotype and odd CNs of AMY1, that could be explained by the underlying haplotypic structure. In two further case-control cohorts (n = 932 and 145, for Chinese and Malays, respectively), we did not observe the previously reported association between AMY1 and obesity or body mass index. Improved methods for accurately genotyping multiallelic CNV loci and understanding the haplotype complexity at the AMY1 locus are necessary for population genetics and association studies.
    Matched MeSH terms: Body Mass Index
  5. Li Y, Babazono A, Jamal A, Liu N, Liang L, Yamao R, et al.
    J Glob Health, 2024 Feb 09;14:04007.
    PMID: 38334270 DOI: 10.7189/jogh.14.04007
    BACKGROUND: Japan has implemented a national lifestyle guidance intervention programme for potential metabolic syndrome among adults aged 40-74 years; however, there is limited evidence regarding the causal impact of this intervention. The study aims to determine the causal effect of this intervention on health outcomes and health care utilisation.

    METHODS: We performed a regression discontinuity design study. A total of 46 975 adults with ≥1 cardiovascular risk factor in 2015 were included in the study. A two-stage evaluation process (stage 1: waist circumference ≥85 cm for men or ≥90 cm for women and ≥1 cardiovascular risk factor; stage 2: body mass index (BMI)≥25 kg/m2 and ≥2 cardiovascular risk factors) was applied. Changes in obesity, cardiovascular outcomes, and health care utilisation were evaluated in a one-year follow-up in the fiscal year 2016.

    RESULTS: Participants who received lifestyle guidance intervention based on the waist circumference had a statistically significant reduction in obesity outcomes (Δ weight: -0.30 kg, 95% CI = -0.46 to -0.11; Δ waist circumference: -0.26 cm, 95% CI = -0.53 to -0.02; Δ BMI = -0.09 kg/m2, 95% CI = -0.17 to -0.04) but not in other cardiovascular risk factors and health care utilisation. Analyses based on BMI and results according to demographic subgroups did not reveal significant findings.

    CONCLUSIONS: The provision of this intervention had a limited effect on health improvement and a decrease in health care costs, health care visits, and length of stay. A more intensive intervention delivery could potentially improve the efficacy of this intervention programme.

    Matched MeSH terms: Body Mass Index
  6. Helvaci MR, Ozer C, Kaya H, Yalcin A
    Med J Malaysia, 2008 Jun;63(2):122-4.
    PMID: 18942297
    We tried to understand whether there are significant cut off values simply determining body mass index (BMI). The study was performed in Internal Medicine Polyclinics on consecutive check up patients aged between 15 and 70 years to see possible consequences of excess weight on health and to avoid debility induced weight loss in elders. Insulin using diabetics and patients with devastating illnesses were excluded to avoid their possible effects on weight. Cases were subdivided into three groups according to their body weights as under 65, between 65 and 85, and above 85 kg groups and prevalences of underweight, normal weight, overweight, and obesity were determined. Sensitivity, specificity, and positive and negative predictive values of body weights to determine BMI were calculated. The study included 954 cases (566 females). Sensitivity of 65 kg as a cut off value to detect normal weight was 61.0%, specificity 94.3%, positive predictive value 82.9%, and negative predictive value was 97.6%. Similarly, sensitivity, specificity, and positive and negative predictive values of 65 and 85 kg to detect overweight cases were 71.5%, 63.3%, 56.2%, and 77.1% respectively. So both values were statistically significant to detect normal weight, overweight and obese individuals (p = 0.000 for both). Although BMI is probably a more valuable parameter to show weight status, the cut off values of 65 and 85 kg, as an easier way, have significant places, too.
    Matched MeSH terms: Body Mass Index*
  7. Sang C, Yan H, Chan WK, Zhu X, Sun T, Chang X, et al.
    Front Med (Lausanne), 2021;8:637652.
    PMID: 33708783 DOI: 10.3389/fmed.2021.637652
    Non-alcoholic fatty liver disease (NAFLD) is one of the main causes of fibrosis. Liver biopsy remains the gold standard for the confirmation of fibrosis in NAFLD patients. Effective and non-invasive diagnosis of advanced fibrosis is essential to disease surveillance and treatment decisions. Herein we used routine medical test markers and logistic regression to differentiate early and advanced fibrosis in NAFLD patients from China, Malaysia, and India (n1 = 540, n2 = 147, and n3 = 97) who were confirmed by liver biopsy. Nine parameters, including age, body mass index, fasting blood glucose, presence of diabetes or impaired fasting glycemia, alanine aminotransferase, γ-glutamyl transferase, triglyceride, and aspartate transaminase/platelet count ratio, were selected by stepwise logistic regression, receiver operating characteristic curve (ROC), and hypothesis testing and were used for model construction. The area under the ROC curve (auROC) of the model was 0.82 for differentiating early and advanced fibrosis (sensitivity = 0.69, when specificity = 0.80) in the discovery set. Its diagnostic ability remained good in the two independent validation sets (auROC = 0.89 and 0.71) and was consistently superior to existing panels such as the FIB-4 and NAFLD fibrosis score. A web-based tool, LiveFbr, was developed for fast access to our model. The new model may serve as an attractive tool for fibrosis classification in NAFLD patients.
    Matched MeSH terms: Body Mass Index
  8. Ooi HL, Wu LL
    Med J Malaysia, 2011 Oct;66(4):308-12.
    PMID: 22299548
    Hospital UKM (Universiti Kebangsaan Malaysia) introduced the use of insulin pump therapy in children and adolescents with Type 1 Diabetes in Malaysia in April 2004. This study aims to evaluate the effectiveness of pump therapy and its impact on metabolic control among patients from our institution. Insulin pump therapy resulted in sustainable improvement in glycemic control throughout the six years of treatment with reduction in HbA1c in the first two years of pump use was statistically significant. The BMI SDS showed an increase trend but the changes before and after pump use was insignificant. There is also high level of treatment satisfaction reported among our insulin pump patients.
    Matched MeSH terms: Body Mass Index
  9. Chan WK, Treeprasertsuk S, Imajo K, Nakajima A, Seki Y, Kasama K, et al.
    Aliment Pharmacol Ther, 2018 Mar;47(6):816-825.
    PMID: 29333610 DOI: 10.1111/apt.14506
    BACKGROUND: The Gut and Obesity Asia (GO ASIA) workgroup was formed to study the relationships between obesity and gastrointestinal diseases in the Asia Pacific region.

    AIM: To study factors associated with nonalcoholic steatohepatitis (NASH) and advanced fibrosis, and medical treatment of biopsy-proven nonalcoholic fatty liver disease (NAFLD) patients.

    METHODS: Retrospective study of biopsy-proven NAFLD patients from centres in the GO ASIA Workgroup. Independent factors associated with NASH and with advanced fibrosis on binary logistic regression analyses in a training cohort were used for the development of their corresponding risk score, which were validated in a validation cohort.

    RESULTS: We included 1008 patients from nine centres across eight countries (NASH 62.9%, advanced fibrosis 17.2%). Independent predictors of NASH were body mass index ≥30 kg/m2 , diabetes mellitus, dyslipidaemia, alanine aminotransferase ≥88 U/L and aspartate aminotransferase ≥38 U/L, constituting the Asia Pacific NASH risk score. A high score has a positive predictive value of 80%-83% for NASH. Independent predictors of advanced fibrosis were age ≥55 years, diabetes mellitus and platelet count <150 × 109 /L, constituting the Asia-Pacific NAFLD advanced fibrosis risk score. A low score has a negative predictive value of 95%-96% for advanced fibrosis. Only 1.7% of patients were referred for structured lifestyle program, 4.2% were on vitamin E, and 2.4% were on pioglitazone.

    CONCLUSIONS: More severe liver disease can be suspected or ruled out based on factors identified in this study. Utilisation of structured lifestyle program, vitamin E and pioglitazone was limited despite this being a cohort of biopsy-proven NAFLD patients with majority of patients having NASH.

    Matched MeSH terms: Body Mass Index
  10. Sun C, Liew G, Wang JJ, Mitchell P, Saw SM, Aung T, et al.
    Invest Ophthalmol Vis Sci, 2008 May;49(5):1784-90.
    PMID: 18436813 DOI: 10.1167/iovs.07-1450
    To describe the relationship of retinal vascular caliber with cardiovascular risk factors in an Asian population.
    Matched MeSH terms: Body Mass Index
  11. Cheah WL, Lee PY, Chang CT, Mohamed HJ, Wong SL
    PMID: 23691641
    Although the association between non-alcoholic fatty liver disease (NAFLD) and metabolic syndrome has been previously firmly established, the prevalence of NAFLD and its risk factors in rural communities remains incompletely defined. This study aimed to determine the prevalence and factors associated with ultrasound-diagnosed NAFLD amongst a rural community in Sarawak. An indigenous village was randomly selected where all adults aged 21 years and above underwent an abdominal ultrasound, biochemical tests and an anthropometric assessment. Respondents with a score > or =8 on an alcohol-use disorders-identification test (AUDIT) indicating harmful or hazardous drinking were excluded. Seventy-seven respondents (46.8% male, mean age 48.4 SD 16.64), met inclusion criteria. The prevalence of ultrasound diagnosed NAFLD was 44.2% (n=34), among them 52.9% had moderate NAFLD. There were no significant age or gender differences between respondents with and without NAFLD, although those with NAFLD were older. Respondents with NAFLD had a significantly higher BMI t,han those without NAFLD (p<0.001). Both male and female respondents with NAFLD had a significantly higher waist circumference than those without NAFLD (p<0.001). Prevalence of diabetes, hypertension, hyperglycemia and hypertriglyceridemia were significantly higher among those with NAFLD. However, there were no significant differences in terms of percentage of unhealthy body fat and muscle, and serum HDL levels. Risk factors independently associated with NAFLD included male gender (odd ratio 0.06; 95% CI 0.008-0.523) and waist circumference (odd ratio 1.2; 95% CI 1.036-1.421). There was a high prevalence of NAFLD and the presence of more severe stages of disease in this indigenous population. Life-style related diseases, such as fatty liver disease, can occur in rural as well as urban populations.
    Matched MeSH terms: Body Mass Index
  12. Nurul-Alia Samiun, Barakatun-Nisak Mohd Yusof, Irmi Zarina Ismail, Norfarhana Mohd Anuar, Winnie Chee Siew Swee
    MyJurnal
    Introduction: Optimal nutritional status is of utmost importance not only for foetal
    development but also to maintain normoglycemia in women with gestational diabetes mellitus
    (GDM). This cross-sectional study described the nutritional status of women with GDM and
    explored whether self-reported nutrition education (NEd) exposure before a GDM diagnosis
    would be able to promote better nutrition status. Methods: GDM women (n= 60; age= 31.6 ±
    5.0 years) diagnosed between 13th and 28th week of gestation participated in the study. We
    assessed nutritional status that included anthropometric and blood pressure assessments,
    biochemical data, and dietary intake. The respondents self-reported their NEd exposure before
    a GDM diagnosis was made. Results: The pre-pregnancy BMI of the participants was 27.9 ±
    6.8 kg/m2
    , which was categorised as overweight. Total (4.3 ± 5.6 kg) and rate (0.2 ± 0.3
    kg/week) of gestational weight gain were within the recommendations. Glycemic parameters
    and blood pressure were also within the normal range. Nevertheless, they had high intakes of
    fat (35.5%) and sugar (14.4%) proportionate to their energy intake. They did not meet the
    recommended nutrient intakes for fibre, calcium, and iron. Only 28.3% of women had prior
    NEd exposure. Among them, almost all (94.1%) had recurrent GDM. Those with NEd
    exposure had lower pre-prandial blood glucose profiles, systolic blood pressure, and
    proportion of protein intake from energy than those without (p< 0.05). Conclusions:
    Suboptimal maternal nutritional status and low exposure to NEd are evident in women with
    GDM. Those with self-reported NEd exposure had better parameters of nutritional status. The
    findings recognised the need of having proper nutrition education for women who are at high
    risk of GDM since at early pregnancy.
    Matched MeSH terms: Body Mass Index
  13. Mohd Nazri, S., Tengku, M.A., Winn, T.
    MyJurnal
    There is concern that shift workers are at higher risk for metabolic syndrome (MS) . The syndrome is characterized by a constellation of metabolic risk factors in one individual. A cross-sectional study of 148 workers in one factory in Kota Bharu, Kelarttan was conducted to examine relationships between shift work and five of the MS rnk factors namely high blood pressure, hyperglycemia, hypertriglyceridaemia, hypo·I·IDL-cholesterolaemia and high body mass index (BMI) . Data was collected through a questionnaire on psychosocial and life-style factors, anthropometric and blood pressure measurements, fasting blood sugar and fasting lipid profile. The National Cholesterol Education Program’s Adult Treatment Panel III Report (NCEPATP III) with some modifications was used to determine the presence of risk factors for the metabolic syndrome, The prevalence of high blood pressure, hypertriglyceridaemia and high BMI were significantly higher among shift workers compared to day workers. There was no difference in the prevalence of hyperglycemia and hypo-HDL-cholesterolaemia. When the shift workers were compared with the
    day workers, the proportion of workers having three or more risk factors for the syndrome was higher among shift workers which were 15.8% and 5.6% respectively.
    Matched MeSH terms: Body Mass Index
  14. Yahya HM, Day A, Lawton C, Myrissa K, Croden F, Dye L, et al.
    Eur J Nutr, 2016 Aug;55(5):1839-47.
    PMID: 26210882 DOI: 10.1007/s00394-015-1001-3
    BACKGROUND: Establishing and linking the proposed health benefits of dietary polyphenols to their consumption requires measurement of polyphenol intake in appropriate samples and an understanding of factors that influence their intake in the general population.

    METHODS: This study examined polyphenol intake estimated from 3- and 7-day food diaries in a sample of 246 UK women aged 18-50 years. Estimation of the intake of 20 polyphenol subclasses commonly present in foods consumed by the sample studied was done using Phenol-Explorer(®) and USDA polyphenol databases. Women were participants in the Leeds Women's Wellbeing Study (LWW) (n = 143), a dietary intervention study aimed at overweight women (mean age 37.2 ± 9.4 years; mean BMI 30.8 ± 3.1 kg/m(2)), and the Diet and Health Study (DH) (n = 103) which aimed to examine the relationship between polyphenol intake and cognitive function (mean age 25.0 ± 9.0 years; mean BMI 24.5 ± 4.6 kg/m(2)).

    RESULTS: The estimated intake of polyphenol subclasses was significantly different between the two samples (p 

    Matched MeSH terms: Body Mass Index
  15. Soong Shui Fun, Segaran Ramodran, Chyretta Burno, Mohd Ishkandar Nazlan, Wihelmina Michael
    MyJurnal

    Introduction: The Ministry of Health Malaysia over the last 20 years has initiated healthy lifestyle campaign to curb obesity but the issue has remained an escalating problem affecting Malaysians. Obesity among students in higher institute is a concern. Undergraduate student nurses as role-model advocating health, being overweight can be a problem. This study is to identify BMI status and determine associated lifestyle factors among undergraduate nurses in UMS. Methods: The study deployed a cross-sectional descriptive survey using a questionnaire to empirically asses BMI status and associated dietary and exercise practice among student nurses. Ethical clearance for the study was ob- tained from UMS`s REC and as well as respondents` consent. A total of 100(N) nursing students were selected through stratified sampling by year of study (year 1, n=35; year 2 n=35; and year 3 n=30). Random sampling for each year of study was done using full name list generated using Microsoft excel. The study tool consists of a validated instrument which captured the respondent’s demographics, BMI index, Healthy Eating Practice Index, and Exercise Practice Inventory. Results: Among the 100 student nurses in this study, 28 students had BMI index of more than 24.9 (either being overweight, obesity Type I or Type II). Students from finalYear 3are significantly overweight(p=0.03) compared to Year 1 or Year 2 students. Comparing respondents with optimum BMI and non-optimum BMI, students who are overweight had significantly poorer Healthy Eating Practice scores and poorer Exercise practice scores. Conclusion: Findings from this study imply that 1 in 4 nursing students are overweight mostly related to poor lifestyle habits. These findings raise the rhetoric and implication of overweight nurses as health care role -models and this paper will discuss some suggestions to address the issue.

    Matched MeSH terms: Body Mass Index
  16. Karlas T, Petroff D, Sasso M, Fan JG, Mi YQ, de Lédinghen V, et al.
    J Hepatol, 2017 05;66(5):1022-1030.
    PMID: 28039099 DOI: 10.1016/j.jhep.2016.12.022
    BACKGROUND & AIMS: The prevalence of fatty liver underscores the need for non-invasive characterization of steatosis, such as the ultrasound based controlled attenuation parameter (CAP). Despite good diagnostic accuracy, clinical use of CAP is limited due to uncertainty regarding optimal cut-offs and the influence of covariates. We therefore conducted an individual patient data meta-analysis.

    METHODS: A review of the literature identified studies containing histology verified CAP data (M probe, vibration controlled transient elastography with FibroScan®) for grading of steatosis (S0-S3). Receiver operating characteristic analysis after correcting for center effects was used as well as mixed models to test the impact of covariates on CAP. The primary outcome was establishing CAP cut-offs for distinguishing steatosis grades.

    RESULTS: Data from 19/21 eligible papers were provided, comprising 3830/3968 (97%) of patients. Considering data overlap and exclusion criteria, 2735 patients were included in the final analysis (37% hepatitis B, 36% hepatitis C, 20% NAFLD/NASH, 7% other). Steatosis distribution was 51%/27%/16%/6% for S0/S1/S2/S3. CAP values in dB/m (95% CI) were influenced by several covariates with an estimated shift of 10 (4.5-17) for NAFLD/NASH patients, 10 (3.5-16) for diabetics and 4.4 (3.8-5.0) per BMI unit. Areas under the curves were 0.823 (0.809-0.837) and 0.865 (0.850-0.880) respectively. Optimal cut-offs were 248 (237-261) and 268 (257-284) for those above S0 and S1 respectively.

    CONCLUSIONS: CAP provides a standardized non-invasive measure of hepatic steatosis. Prevalence, etiology, diabetes, and BMI deserve consideration when interpreting CAP. Longitudinal data are needed to demonstrate how CAP relates to clinical outcomes.

    LAY SUMMARY: There is an increase in fatty liver for patients with chronic liver disease, linked to the epidemic of the obesity. Invasive liver biopsies are considered the best means of diagnosing fatty liver. The ultrasound based controlled attenuation parameter (CAP) can be used instead, but factors such as the underlying disease, BMI and diabetes must be taken into account. Registration: Prospero CRD42015027238.

    Matched MeSH terms: Body Mass Index
  17. Abidin NZ, Mamat M, Dangerfield B, Zulkepli JH, Baten MA, Wibowo A
    PLoS One, 2014;9(12):e114135.
    PMID: 25502170 DOI: 10.1371/journal.pone.0114135
    Poor eating behavior has been identified as one of the core contributory factors of the childhood obesity epidemic. The consequences of obesity on numerous aspects of life are thoroughly explored in the existing literature. For instance, evidence shows that obesity is linked to incidences of diseases such as heart disease, type-2 diabetes, and some cancers, as well as psychosocial problems. To respond to the increasing trends in the UK, in 2008 the government set a target to reverse the prevalence of obesity (POB) back to 2000 levels by 2020. This paper will outline the application of system dynamics (SD) optimization to simulate the effect of changes in the eating behavior of British children (aged 2 to 15 years) on weight and obesity. This study also will identify how long it will take to achieve the government's target. This paper proposed a simulation model called Intervention Childhood Obesity Dynamics (ICOD) by focusing the interrelations between various strands of knowledge in one complex human weight regulation system. The model offers distinct insights into the dynamics by capturing the complex interdependencies from the causal loop and feedback structure, with the intention to better understand how eating behaviors influence children's weight, body mass index (BMI), and POB measurement. This study proposed a set of equations that are revised from the original (baseline) equations. The new functions are constructed using a RAMP function of linear decrement in portion size and number of meal variables from 2013 until 2020 in order to achieve the 2020 desired target. Findings from the optimization analysis revealed that the 2020 target won't be achieved until 2026 at the earliest, six years late. Thus, the model suggested that a longer period may be needed to significantly reduce obesity in this population.
    Matched MeSH terms: Body Mass Index
  18. Yaw YH, Kandiah M, Shariff ZM, Mun CY, Hashim Z, Yusof RM, et al.
    Asian Pac J Cancer Prev, 2010;11(6):1535-40.
    PMID: 21338193
    This study describes weight changes experienced by Malaysian women with breast cancer. Women with breast cancer (n=368) were recruited from eight hospitals and four breast cancer support groups in Peninsular Malaysia. Current weight was measured and weight at the time of diagnosis and a year preceding diagnosis were based on self-reports. Change in weight was determined from the year preceding breast cancer diagnosis to study entry (time 1), at the time of diagnosis to study entry (time 2) and from a year preceding breast cancer diagnosis to the time of diagnosis (time 3). Current body mass index, at a year preceding diagnosis and at the time of diagnosis were determined. Waist circumference was also measured. The sample comprised 57% Malay, 34% Chinese and 9.8% Indian women. The mean age of the women was 54 ∓ 9.04 years and over 80% were post-menopausal. Majority of the women were in stage I and stage II breast cancer at the time of diagnosis. The most common treatments received by these women were chemotherapy followed by radiotherapy and mastectomy. Overweight and obesity were prevalent in over 40% of the survivors at all three periods. Significant weight changes were observed during time 1 (-0.74 ∓ 4.78kg, p< 0.001), time 2 (2.73 ∓ 8.06kg, p< 0.001) and time 3 (3.47 ∓ 7.53kg, p< 0.001). At time 1, almost 50% showed no changes in their weight. At time 2, nearly two-thirds had gained weight and at time 3, 69% had gained weight, abdominal obesity was observed in nearly two-thirds of the women at study entry. A significant difference in weight change among age groups was observed in time 2 and time 3. All ethnic groups had significant weight change in time 1 and time 2. Significant weight gain was observed in relation to body mass index prior to diagnosis, at diagnosis and at study entry. However, no significant difference in weight change by educational level, family history of cancer and cancer stages were observed in all 3 periods. In conclusion, significant weight gain was evident in this sample of women after diagnosis of breast cancer and treatment. Women with breast cancer should be encouraged to maintain normal body mass index and waist circumference through appropriate diet and regular physical activity which may help to reduce their risk of recurrence, secondary cancer and metastasis.
    Matched MeSH terms: Body Mass Index
  19. Wang Q
    Tob Induc Dis, 2021;19:37.
    PMID: 34017231 DOI: 10.18332/tid/133932
    INTRODUCTION: Compared with the number of studies in adults, body weight in relation to tobacco use has been understudied in the adolescent population. This study aimed to examine the association between underweight, overweight and tobacco use in low- and middle-income countries.

    METHODS: Data were derived from the Global School-Based Student Health Survey (GSHS). Data from 71176 adolescents aged 12-15 years residing in 23 countries were analyzed. The Centers for Disease Control and Prevention (CDC) 2000 growth charts were used to identify underweight, normal weight, and overweight/ obesity. Weighted age- and gender-adjusted prevalence of weight categories and tobacco use was calculated. Multivariate logistic regression analysis was performed to estimate the association between weight categories and tobacco use for each country, controlling for covariates. Pooled odds ratios and confidence intervals were computed using random- or fixed-effects meta-analyses.

    RESULTS: A significant association between weight categories and tobacco use was evident in only a few countries. Adolescents reporting tobacco use in French Polynesia, Suriname, and Indonesia, had 72% (95% CI: 0.15-0.56), 55% (95% CI: 0.24-0.84), and 24% (95% CI: 0.61-0.94) lower odds of being underweight, respectively. Adolescents reporting tobacco use in Uganda, Algeria, and Namibia, had 2.30 (95% CI: 1.04-5.09), 1.71 (95% CI: 1.25-2.34), and 1.45 (95% CI: 1.00-2.12) times greater odds of being overweight/obese, but those in Indonesia and Malaysia had 33% (95% CI: 0.50-0.91) and 16% (95% CI: 0.73-0.98) lower odds of being overweight/obese.

    CONCLUSIONS: The association between tobacco use and BMI categories is likely to be different among adolescents versus adults. Associating tobacco use with being thin may be more myth than fact and should be emphasized in tobacco prevention programs targeting adolescents.

    Matched MeSH terms: Body Mass Index
  20. Amiratul Athirah, S., Aryati, A., Wan Rohani, W.T.
    Medicine & Health, 2018;13(2):58-71.
    MyJurnal
    Leptin is a hormone that regulates the energy intake and expenditure which is encoded by leptin gene. Leptin gene variants were studied comprehensively in relation with body weight status, but the evidences were indecisive. This study was to determine the association between leptin gene variants, G2548A, H1328080 and A19G with obesity and its attributes in Terengganu, Malaysian population. This study involved a total of 249 Malay subjects (101 healthy adults with normal BMI as the control group and 148 overweight and obese subjects). The anthropometrics data were obtained, blood samples were collected for genetic markers and lipid profile analyses. PCR-RFLP technique was performed to determine the genotype and allele distribution of leptin gene variants. The genotypic and allelic frequencies of leptin gene variants presented no significant difference between groups, G2548A (P = 0.93 and 0.74); H1328080 (P = 0.58 and 0.56); and A19G (P = 0.72 and 0.38) correspondingly. However, there was statistical significant difference between triglyceride level and genotypes of G2548A variant (P = 0.016); between total cholesterol level and H1328080 genotypes (P = 0.027). In addition, multivariate logistic regression projected the male gender (adjusted OR= 26.27; CI= 1.06-1.25; P = 0.009), waist circumference (adjusted OR = 1.15; CI = 1.06-1.25; P = 0.001) and body fat percentage (adjusted OR = 1.43; CI = 1.20-1.70; P
    Matched MeSH terms: Body Mass Index
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