Chapter 17, Problem 1.1CS

Summary Introduction

To calculate: Current body mass index (BMI) of Person A.

Introduction: A medical condition of unhealthy accumulation of fat in the body is referred as obesity. Obesity can result in the development of chronic diseases, such as metabolic syndrome, chronic heart disease, diabetes, and many others. However, it is preventable with adequate lifestyle changes and eating a healthy diet.

Explanation of Solution

Person A is a single father with two teenage sons and a software development job that takes him about 90 minutes to travel. He likes his workplace and colleagues. He is $5^{\prime }11^{″}$ tall with a weight of 190 lb. He is a sports enthusiast and watches football and basketball games on television. His sons actively participate in sports events. He repairs an old car with his sons in his spare time. He does not carry lunch to his office, as it has a cafeteria. Though he believes that a “hot meal” is required to meet the nutritional demands, he relies on frozen entrees or take-out, and the evening meal is mostly from a fast food restaurant.

According to the data provided, the height of Person A is $\text{<msup><mn>5</mn><mo>′</mo></msup>1<msup><mn>1</mn><mo>″</mo></msup>}$, and his weight is 190 lb.

Therefore, the height of Person A in meters is as follows:

$\begin{array}{c}\text{1 foot (}{\text{1}}^{\prime }\text{)= 0}\text{.31 meter}\\ \text{1 inch (}{\text{1}}^{″}\text{) = 0}\text{.025 meter}\\ \text{<msup><mn>5</mn><mo>′</mo></msup>1<msup><mn>1</mn><mo>″</mo></msup>= 5×0}\text{.31 + 11×0}\text{.025}\\ \cong \text{ 1}\text{.8 meter}\end{array}$

The weight of Person A in kg is as follows:

$\begin{array}{c}\text{1 pound (lb)= 0}\text{.45 kg}\\ \text{190 lb= 190×0}\text{.45}\\ \text{=85}\text{.5 kg}\end{array}$

The BMI is calculated using the formula given below:

$\begin{array}{c}\text{Body mass index }\left(\text{BMI}\right)\text{=}\frac{\text{Weight in }\left(\text{kg}\right)}{{\left[\text{height in (m)}\right]}^{\text{2}}}\\ \text{=}\frac{85.5}{{\left(\text{1}\text{.8}\right)}^{\text{2}}}\\ \text{= 26}{\text{.3 kg/m}}^{\text{2}}\end{array}$

Current body mass index (BMI) of Person A is 26.3 kg/m².

Summary Introduction

To classify: Person A’s weight status based on the clinical classification.

Introduction: A medical condition of unhealthy accumulation of fat in the body is referred as obesity. Obesity can result in the development of chronic diseases, such as metabolic syndrome, chronic heart disease, diabetes, and many others. However, it is preventable with adequate lifestyle changes and eating a healthy diet.

Explanation of Solution

Person A is a single father with two teenage sons and a software development job that takes him about 90 minutes to travel. He likes his workplace and colleagues. He is $5^{\prime }11^{″}$ tall with a weight of 190 lb. He is a sports enthusiast and watches football and basketball games on television. His sons actively participate in sports events. He repairs an old car with his sons in his spare time. He does not carry lunch to his office as it has a cafeteria. Though he believes that a “hot meal” is required to meet the nutritional demands, he relies on frozen entrees or take-out and the evening meal is mostly from a fast food restaurant.

Refer to Table 17.3 “classification of over weight and obesity by BMI and waist circumference values associated with high risk”, given in the textbook. This table shows that BMI of overweight people is 25.0-29.9 kg/m². As BMI of Person A is 26.3 kg/m², he is included in overweight class.