ACE Personal Trainer Practice Exam

Which classification corresponds to a BMI of 30.0-34.9?

1. Normal weight

2. Overweight

3. Grade 1 Obesity

4. Grade 2 Obesity

The correct answer is: Grade 1 Obesity

A BMI (Body Mass Index) of 30.0-34.9 falls within the classification of Grade 1 Obesity. This classification is part of the World Health Organization's categorization of weight based on BMI values, where BMI is calculated using a person's weight in kilograms divided by the square of their height in meters. In this scale, normal weight is classified as a BMI of 18.5-24.9, and overweight is considered to be a BMI of 25.0-29.9. Once a person's BMI reaches 30.0, they are classified as obese, but within this classification, further divisions take place to provide a clearer understanding of the levels of obesity. Grade 1 Obesity specifically includes those with a BMI ranging from 30.0 to 34.9, which indicates a moderate level of excess body weight. Higher classifications exist; for instance, Grade 2 Obesity applies to BMI ranges of 35.0-39.9, while Grade 3 Obesity (also referred to as severe or morbid obesity) includes BMI values of 40.0 and above. This tiered approach helps healthcare providers assess health risks and determine appropriate interventions based on the degree of obesity.