Question Name____________________________________________________Section________________Date___________ Week 5: Daily Energy Balance

Name____________________________________________________Section________________Date___________

Week 5: Daily Energy Balance

Invitation to Inquiry

Many kinds of foods are marketed to those who participate in various kinds of sports. The implication is that these foods have additional nutrients or higher quantities of nutrients need by the athlete. Go to a store and read the ingredient label on one of these products. Compare it to an equivalent product that is not marketed in such a manner. For example, you could compare a sports drink to a soft drink or orange juice. You could compare a “nutrient bar” to an equivalent candy bar or snack food. Look specifically at quantities of calories, fats, proteins, sodium, and potassium. How are they different? What other foods could you eat that would provide the same calories and nutrients?

Background

The theoretical biological sciences of biochemistry, anatomy, cell biology, and physiology are brought together in the practical biological field of nutrition. The science of nutrition is the study of the processes involved in taking in, assimilating, and utilizing nutrients. The amount of food and drink consumed by a person from day to day is a person’s diet. There has been an increased interest in diet and personal nutrition as more information concerning these subjects becomes available through the popular press, scientific publications, health clubs, and schools. Not only are people “counting calories” and concerned with the grams of fat they consume, but they are becoming scientifically literate enough to ask significant questions to their physicians, teachers, food manufacturers, and government officials. With a minimal amount of nutrition information, it is possible to get a better handle on your own nutritional status.

In this exercise, you determine your daily basal metabolic rate, voluntary muscular activity, and specific dynamic action per day. These are used to estimate your total energy requirements per day in kilocalories (kcal). You then calculate your total daily kcal intake. By comparing these two figures, you can determine whether or not your present diet should result in your maintaining, losing, or gaining weight.

You will determine your:

1. basal metabolic rate;

2. voluntary muscular activity level;

3. specific dynamic action;

4. kilocalorie intake per day by adding your BMR, activity level, and SDA;

5. total energy requirements and compare to your energy kcal intake per day; and

6. energy balance.

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