Table of Contents


Part 18 : Nutrition--Healthy Eating, Hydration & Supplements

NUTRITION--HEALTHY EATING, HYDRATION & SUPPLEMENTS

Fat Free Facts

 

 

Tips for Healthy Eating

 

 

 

When nutrition information is not available, use several "fat-skimming" strategies:

 

LOSE WEIGHT?

 

 

GAIN WEIGHT?

 

To gain weight, you have to consistently eat more calories than when you are maintaining weight. The easiest way to do this is to drink extra fluids like low-fat milk or juices. Cranberry juice is particularly high in calories.

 

Hydration: Sports drinks or Water?

 

The human body consists of approximately 65 percent water. Adequate fluid intake is an essential component of athletic performance.

 

FLUID FACTS

 

 

FLUID PERFORMS A NUMBER OF CRITICAL FUNCTIONS:

If too little fluid is consumed or too much fluid is lost through perspiration, athletic performance can suffer. In extreme cases, medical complications can occur.

 

OTHER FLUID FUNCTIONS:

 

 

HOW MUCH IS ENOUGH?

 

 

THIRSTY?


A Liter low:

Your body loses about 2.5 to 3 liters of water each day through normal perspiration and excretion. Factor in warm weather, humidity and exercise and you may lose 1 to 2 liters of water each hour. .5 Liter of fluid loss equals one pound on the scale.

 

DEHYDRATION

Dehydration occurs at a fluid loss of just 1 percent of body weight. This is enough to increase body temperature and impair performance as well as body functions. As dehydration continues, cramps (especially leg) develop, heart rate is elevated and blood volume and cardiac output decrease. Severe consequences include heat exhaustion, hallucinations, circulatory collapse and death at a fluid loss of 9 to 12 percent of body weight.

Early signs of Dehydration

Severe signs of Dehydration

fatigue

difficulty swallowing

loss of appetite

stumbling and clumsiness

flushed skin

numb or shriveled skin

heat intolerance

delirium

lightheadedness

sunken eyes and dim vision

dark urine with a strong odor

painful urination

muscle spasms

HOW MUCH WATER?

 

 

ISOTONIC

 

The term "isotonic" is often used broadly to include many "sports drinks." However, to be truly isotonic, a product must replace lost body fluids without causing either swelling or shrinkage of the cells.

 

ARE SPORTS DRINKS BETTER?

 

 

THE RECREATIONAL EXERCISER

 

WHEN TO WATER DOWN

 

 

FIVE BASIC RULES FOR FLUID REPLACEMENT

 

1. Cool fluids are best (40 to 50 degrees F)

2. Plain water adequately replaces fluid for most athletes.

3. Don't depend on thirst. By the time you feel thirsty, your body has already started to dehydrate.

4. Weigh before and after an athletic event. Replace .5 liters of fluid for every 1 pound lost.

5. Sip water during competition or training.


Should I take vitamin pills?

 

 

MINERAL AND TRACE ELEMENT ABSORPTION

 

Calcium

Magnesium

Zinc

Absorption increased by:

Vitamin D

Vitamin D

Amino Acids

Vitamin A

Absorption decreased by:

Magnesium

Calcium

Calcium

Caffeine

Sodium

Iron

Manganese

Selenium

Copper

Sodium

Potassium

Absorption increased by:

Amino Acids

Amino Acids

Absorption decreased by:

Calcium

Calcium

Calcium

Iron

Magnesium

Magnesium

Zinc

Molybdenum

Vitamin C

Iron

Chromium

Manganese

Absorption increased by:

Vitamin C

Amino Acid Chelates

Absorption decreased by:

Calcium

Iron

Calcium

Magnesium

Iron

Iron

Zinc

Manganese

Copper

Chromium

Manganese


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