1879 BMI Guide Final - Measure, Calculate and Interpret Body Mass Index for Transition Stage 3

Oct 13, 2026

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Guide for teachers and school club leaders on measuring, calculating, and interpreting adolescent girls’ Body Mass Index (BMI). Explains what BMI is, how it relates to nutrition and balanced diets, and why BMI matters during adolescence. Provides key service-provider considerations, then details required materials and step-by-step procedures for measuring body weight and height, recording results, and using BMI Z-score charts for interpretation.

LanguageEnglish

CategoryForms

FormatPDF

Pages4

Reading Time2 min

AccessFree to download

Introduction

Activity 1: Measure, Calculate and Interpret Body Mass Index

What is Body Mass Index?

Relationship between BMI and nutrition

Why BMI for adolescent girls

Key points for service providers

Activity 2: Measuring and interpretation of BMI

Required materials

How to measure body weight

How to measure height

Measure, Calculate and Interpret Body Mass Index A guide for teachers and school club leaders | INTRODUCTION
This section defines BMI, summarizes its importance and gives guidance on how to take measures, and calculate and interpret Body Mass Index (BMI) results using the Z-score chart. The guide has been developed to overcome the gap identified during the midterm assessment. The primary audiences for the guide will be teachers and health extension workers/professionals who are involved in measuring, calculating and interpreting adolescent girls’ BMI. | | --- | | Application of COVID-19 pandemic measures is very critical | Activity 1: Measure, Calculate and Interpret Body Mass Index This section summarizes the relationship between BMI and nutrition in applying question and answer methodology. Activity 1: Getting informed about Body Mass Index and its importance What is Body Mass Index? • Body mass index (BMI) is a measure of weight adjusted for height, calculated as weight in kilograms divided by the square of height in meters (kg/m2 ) . • Body Mass Index (BMI) is a measurement of a person’s weight with respect to his or her height. • It is a way for us to see if our weight and height are in a healthy proportion What is the relationship between body mass index and nutrition? • Healthy nutrition is characterized by the consumption of a balanced diet. • Balanced diet means getting the right types and amounts of foods and drinks to supply adequate nutrient and energy for supporting normal growth and development. • Healthy food is a food that is highly beneficial to health that nourishes the human body with essential nutrients, namely, vitamins, minerals, trace minerals, protein, carbohydrates, fats and enzymes. These nutrients are necessary for life. And the food should be free of microorganisms that damage the health of human beings. • A good and healthy diet helps us to maintain a healthy weight. In order to know if we are getting a balanced diet, we must know our Body Mass Index (BMI) . • A well-nourished person has a body weight proportional to his or her height. • BMI provides a reliable indicator of body thin-ness and fatness for most people and is used to screen for weight categories that may lead to health problems. • The identification of BMI helps people in choosing the healthy food to be taken. Why body mass index for adolescent girls? • Nutrition influences growth and development throughout infancy, childhood and adolescence. However, nutrient needs are high during adolescence • The primary objective of BMI measurement is to motivate the girls and their parents to adopt healthy diets • It is an inexpensive and easy-to-perform method of screening for weight categories that may lead to health problems. • BMI measurement helps to trace a high amount of body fat that can lead to weight-related diseases and other health issues. Being underweight can also put one at risk for infections and health issues. • Body mass index (BMI) has been recommended for use asa screening tool for overweight, obesity and thinness in adults and adolescents. What key points must be considered by service providers? • Let the girl know her weight and height as well asher BMI Z-Score result • Explain carefully if BMI is too low (thin) or too high (overweight) • Whatever the result, provide counseling for adolescent girls to practice or continue practicing healthy diet • Make sure parents of adolescent girls are informed about the BMI status of their daughtersand encourage them to adopt key adolescent nutrition behaviors Activity 2: Measuring and interpretation of BMI This section will enable the participant to practice measurement and interpretation of BMI. REQUIRED MATERIALS • Weight scale • Calibrator • Standing/ dropdown height measurement • BMI register • BMI Z-Score for 5-19 year-old girls 2.1: How to measure body weight Material needed: Functional weight measureme

FAQs

What is Body Mass Index (BMI) and how is it calculated?

BMI measures weight adjusted for height, calculated as weight in kilograms divided by the square of height in meters (kg/m2). It helps assess whether weight and height are in a healthy proportion.

How does nutrition relate to BMI?

Healthy nutrition involves consuming a balanced diet with the right types and amounts of foods and drinks to support normal growth and development. A good diet helps maintain a healthy weight, and BMI can be used to understand whether nutrition is balanced.

What should service providers do when interpreting a girl’s BMI Z-score result?

Tell the girl her weight, height, and BMI Z-score result, and explain carefully if BMI is too low (thin) or too high (overweight). Provide counseling to practice or continue a healthy diet and inform parents to support key adolescent nutrition behaviors.

Oct 13, 2026

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