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Table 1 – Calorie needs by gender, age, and activity level



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Manual do professor
Table 1 – Calorie needs by gender, age, and activity level

Gender

Age

Activity Level









Sedentary

Moderately

Active

Female

4-8

1,200

1,400-1,600

1,400-1,800




9-13

1,600

1,600-2,000

1,800-2,200




14-18

1,800

2,000

2,400




19-30

2,000

2,000-2,200

2,400




31-50

1,800

2,000

2,200




51+

1,600

1,800

2,000-2,200

Male

4-8

1,400

1,400-1,600

1,600-2,000




9-13

1,800

1,800-2,200

2,000-2,600




14-18

2,200

2,400-2,800

2,800-3,200




19-30

2,400

2,600-2,800

3,000




31-50

2,200

2,400-2,600

2,800-3,000




51+

2,000

2,200-2,400

2,400-2,800

Calories in, calories out

In case you wonder how many calories you need every day, the answer varies depending on your gender, your age, and your activity level (Table 1).

The calories we need for our daily activities come from a process called metabolism that occurs in the body’s cells. Metabolism is a series of chemical reactions that occur when food is broken down in smaller pieces, which also releases energy.

This released energy can also be stored in body tissues for later use. When we consume more calories than our bodies need, these calories are stored, primarily as fat. […]

Available at . Accessed on April 22, 2016.
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Now answer these questions about the text you have just read.



1. What kind of information can be found in a nutrition label?

2. What is the difference between Calorie (uppercase C) and calorie (lowercase c)?

3. What is a Calorie?

4. What did Atwater’s calorimeter measure?

5. How much energy does 1 gram of fat provide?

6. How much energy do you need per day, according to Table 1?

7. How does the body store excess energy?

Let’s research!

In addition to calories, the nutrition label also displays the amount of the three main nutrients: proteins, fat, and carbohydrates. But what are they? Together with the help of your biology, physical education and chemistry teachers, research one of these four topics: fats, proteins, carbs, physical activity and health.

Work in groups and be prepared to present your findings to the whole class. Consider the guiding questions below for each topic. But don’t limit your research to these questions, as they are just guidelines.

Fats

a) What is fat?

b) Is fat really bad?

c) Why is fat good for you?

d) Does fat taste good?

e) How much fat should you eat on a daily basis?

f) How can fat be measured in food?

g) What would happen if we had no fat in our diets?

h) What diseases are associated with excess fat intake?

Proteins

a) What are the main sources of protein?

b) What is the role of protein in the human body?

c) What are the basic elements of protein?

d) What are the possible sources of protein in a vegetarian diet?

e) How can protein in food be measured?

f) What diseases are associated with excess protein intake?

Carbohydrates

a) What types of carbohydrates can be found in food? Give examples.

b) How can the amount of carbohydrates in food be calculated?

c) What is the role of dietary fiber in carbohydrate digestion?

d) What diseases are associated with problems in carbohydrate digestion and absorption?

e) How much carbohydrate do we need every day?

f) What happens to your energy level when you eat sweet food?

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