Bmi validity and reliability
A waist that's 40 or more inches for a man or larger than 35 inches for a woman indicates potentially dangerous levels of visceral fat. To make sure you're not carrying too much visceral fat, measure your waist to determine the circumference. Visceral fat can contribute to inflammation and may release compounds that raise your risk of serious health problems, such as type 2 diabetes and cardiovascular disease.
The large midsection can be of concern, because it may indicate that you have too much belly fat, also called visceral fat. Where you carry fat matters to your health, but BMI won't tell you this important detail.īMI can't measure if you have a pear shape - with more subcutaneous fat in your hips and thighs - or an apple shape with a larger midsection. Highly athletic people whose BMI falls into the higher side of normal or lower end of overweight may actually have a healthy amount of body fat, but an abundance of muscle that causes them to weigh more.You and your friend may have the same BMI, but still have different levels of fatness.No need to be concerned, though you aren't carrying excessive fat that increases your disease risk. You look lean and fit, but your BMI appears high. Muscle is denser than fat, so it takes up less space pound for pound. Highly athletic people whose BMI falls into the higher side of normal or lower end of overweight may actually have a healthy amount of body fat, but an abundance of muscle that causes them to weigh more. The higher your BMI, the more likely it's accurately assessing an excessive amount of fat. Sedentary people and athletes who have the same BMI also differ considerably in body fat percentage - with athletes having lower levels. An older adult likely has a greater percentage of fat than a younger adult, even though both might have the same BMI. Race can also affect BMI - when at the same BMI, Caucasians tend to have more body fat than African-Americans and less than Asians. For example, when women and men have the same BMI, the woman usually has more fat because of hormonal differences. It is a condition of access that users recognise and abide by the legal requirements associated with these rights.You and your friend may have the same BMI, but still have different levels of fatness.
Bmi validity and reliability license#
If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use.
Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. Past > Institutes > Institute of Health and Biomedical InnovationĬurrent > Schools > School of Exercise & Nutrition SciencesĬonsult author(s) regarding copyright matters Past > QUT Faculties & Divisions > Faculty of Health Validity, reliability, feasibility, NRS-2002, MST, medical doctor, SGA Additional activities are required to make nutrition screening more feasible. There was, however, lower agreement (73%), regarding the feasibility of implementing screening in their wards and hospitals.Conclusions: Both NRS-2002 and MST+BMI were valid, reliable and feasible for use by medical doctors for nutrition screening in hospitals in the resource sparse Vietnamese context. Over 82% of medical doctors indicated that the NRS-2002 and MST+BMI were easy to conduct. It took between two and 4 min to complete screening using NRS-2002 or MST+BMI. Medical doctors mostly agreed (93%) on the need for and benefits of nutrition screening. Viewpoints regarding the benefit and role of nutrition screening and the ease of use, acceptability and feasibility of NRS-2002 and MST+BMI were assessed among medical doctors using self-administered questionnaires with Likert scales to determine feasibility.Results: After completing by medical doctors the NRS-2002 and MST+BMI showed good validity (the sensitivity and specificity were 80.3% and 79.8% for NRS-2002 and were 81.8% and 84.5% for MST+BMI, respectively) and consistent reliability (κ: 0.72 & 0.75) against SGA or BMI. Cohen's kappa (κ) statistics were calculated to determine the reliability of NRS-2002 and MST+BMI. Area Under the ROC curve (AUC), sensitivity, specificity, positive predictive value, negative predictive value and percent of correctly classified were calculated to determine validity against SGA or BMI. Background & aim: This study aims to prospectively assess the validity, reliability and feasibility of two nutrition screening tools NRS-2002 and MST combined with BMI (MST+BMI) after administration by medical doctors in hospitals in Ho Chi Minh City (HCMC) Viet Nam.Methods: Participants were 150 adult patients (validity study), 30 adult patients (reliability study) and 40 medical doctors (feasibility study) in three wards from three general public hospitals in HCMC.