PROBLEM 175 



203 



cise, moderate exercise, and severe exercise. No boy or girl in 

 high school ever does very severe exercise. Light exercise might 

 be taken to mean walking to school, moving about the house, etc. 

 Moderate exercise would be setting-up drill, walking (not running) 

 upstairs, or any exercise that will cause a slight perspiration. 

 Severe exercise would be carrying heavy bundles, football, tennis, 

 or basket ball during moments of active play. Use considerable 

 care in making your estimate because of the value of this problem 

 to you. 



Conclusion. — 1. How do age, weight, occupation, and sex 

 affect your daily Calorie requirement? 



2. What is your daily Calorie requirement? 



Problem 175: To find the proportion of protein, fat, and 

 carbohydrate needed in my daily Calorie requirement. 



Materials. — Tables, etc., in this volume and in Hunter's Civic 

 Biology. 



NOTE. — At least three different investigators have slightly different beliefs as 

 to just what this proportion of protein, fat, and carbohydrate should be ; but all 

 agree in one detail, that the proportion of protein food used should be kept low. 



The following table gives the proportion per 100 Calories as 

 given by Atwater, Chittenden, and Voit, a German investigator. 



Cal. phom 

 Protein 



Cal. prom 

 Fat 



Cal. from 

 Carbohy- 

 drate 



Atwater 

 Chittenden 

 Voit . . 



14 

 10 

 25 



32 



30 

 20 



54 

 60 

 55 



Of the three given above, the estimate of Chittenden is usually 

 adopted, for this country although some people believe that his 

 proportion of protein is a little low. Foods taken into the body 

 having these proportions of the nutrients constitute a balanced 

 ration or dietary because they provide the body with the right 

 proportion for tissue building as well as for fuel food. 



Observations. — Compare the life you lead with that of a day 

 laborer. Would your needs be the same? 



