BACKGROUND The nature of body-composition changes in HIV-associated weight loss is unclear. OBJECTIVE We examined the relation between the initial percentage of body fat and the composition of weight loss in men and women with HIV infection. DESIGN HIV-positive adults were seen at semiannual clinic visits, at which time weight, fat, and fat-free mass were determined. The unit of analysis wa...

OBJECTIVE Recent studies suggest an involvement of the obese (OB) gene and its product leptin in the regulation of body fat. Since adults with growth hormone deficiency (GHD) have a high body fat mass which can be normalized with recombinant human (rh) GH therapy, we investigated whether GH influences serum leptin directly or indirectly via its lipolytic effect. DESIGN Fourteen adults with GH...

background: the sensitivity and specificity of body mass index (bmi) percentiles of centers for disease control 2000 (cdc2000) standard was compared with child actual overweight which was identified by fat mass index (fmi) and overweight status in these children based on bmi and fmi. methods: in this case-control study, elementary school girls (aged 8-10 years) were recruited from schools of is...

purpose obesity is a common nutritional problem in both developed and developing countries. the aim of this study was to determine the prevalence of overweightness and obesity using both bioelectrical impedance analysis (bia) and body mass index (bmi). methods in this cross-sectional study, 288 healthy college students were selected. socio-economic status questionnaires were completed and subje...

OBJECTIVE To compare two methods of classifying obesity based on body mass index and body fat percentage. METHODS The cross-sectional study was conducted from November 2012 to August 2013 at Jinnah Postgraduate Medical Centre, Karachi. Male and female volunteers between the ages 15-65 years were selected using simple random sampling. They were classified into different groups for body mass in...

Obesity and sarcopenia are health problems associated with ageing. The present study modelled the longitudinal changes in body composition of healthy men, aged from 20 to 96 years, and evaluated the fidelity of BMI to identify age-dependent changes in fat mass and fat-free mass. The data from 7265 men with multiple body composition determinations (total observations 38,328) were used to model t...

INTRODUCTION Obesity is considered one of the most serious public health problems of the 21st century in children and adolescents. The percentile or Z-score of the body mass index is widely used in children and adolescents to define and assess overweight and obesity, but it does not determine the percentage of total body fat. Other anthropometric measurements that determine total body fat are s...