Nutrition
Your nutritional needs will vary depending upon your health and fitness goals. If your aim
is to lose body fat and body weight, you need to become familiar with the variables that
affect weight loss and body fat loss. Above all, you should realize that it 's more
important to lose body fat than to lose overall body weight. Losing body fat reduces your
risk for coronary artery disease, while losing overall body weight doesn't necessarily
reduce this risk. In other words, you shouldn't just cut your calorie intake. Instead you
should reduce your intake of fatty foods and increase your physical activity level.
Essential Nutrients
There are six essential nutrients that you need on a daily basis.
Water
Vitamins
Minerals
Carbohydrates
Fats
Proteins
Water
Water is the most essential nutrient the body needs. Forty to sixty percent of your body
weight is water. Muscle composition is approximately 70% water. When you exercise, your
body loses water through perspiration (dehydration). It is important that you continuously
drink water while you are exercising and throughout the day. Eight to ten glasses (8 fluid
ounces) of water are recommended throughout the day for the average person. Your
individual level of water intake relates specifically to your body weight, height and
activity levels. Consult a registered dietitian for specific details about your own
personal consumption.
Vitamins and Minerals
Vitamins and minerals are essential to your daily diet and are found in the natural foods
that we consume in our daily diet (fruits, vegetables, meats and whole grains).
Vitamins are organic compounds (natural and contain carbon) which provide energy to the
body and are needed in small amounts to assist with chemical reaction within the cells.
Vitamins come in two forms; fat soluble and water soluble.
-Fat Soluble Vitamins (A, D, E, K) are stored in the adipose tissue (fat tissue) and can
build up high levels of toxins in the body if they are not utilized. -Water Soluble
Vitamins (B, C) are excreted if your daily amount of intake is too great and can be toxic
in the body if they are not utilized.
Minerals are inorganic substances (unnatural and man made) and they regulate processes
within the body. Minerals are incorporated into different structures within the body to
create enzymes, hormones, skeletal bones, skeletal tissues, teeth and fluids. Calcium and
phosphorus are the two most common minerals found in the body. Some of the other prevalent
minerals found in the body are; iron, zinc, sodium, potassium, magnesium, fluoride,
sulfur, copper, and chloride.
If mineral levels are overabundant in the body, such as sodium, they may facilitate
negative effects in the body. High sodium levels may elevate blood pressure. If mineral
levels are inadequate in the body, such as iron, they may facilitate negative effects in
the body. Low iron levels in women can produce anemia (a deficiency in blood iron levels).
Anemia can restrict oxygen and carbon dioxide removal from the cells. Low calcium levels
can facilitate irregular muscle contractions, bone density loss, blood clotting and
improper brain functioning.
For further in-depth information about vitamins and minerals, consult a registered
dietitian or your physician.
Calories
A calorie, or kilocalorie (Kcal), is a measure of heat energy. Food calories are nutrients
and supply energy to the body. It is essential that you take in the recommended amount of
calories per day. The caloric intake level that 's appropriate for you depends on a number
of factors, including your height, weight, and gender. If you want to determine a specific
figure that is, approximately how many calories you should consume in a day again, consult
a registered dietitian.
There are three types of calories:
-Carbohydrates
-Fats
-Protein
The Heart Association and RDA recommends a daily total food diet that consists of
the following caloric breakdown:
-50% carbohydrate
-30% fat
-20% protein
For individuals who are exercising on a consistent basis, it is recommend that a daily
total food diet consist of the following caloric breakdown:
-65% carbohydrate
-10% fat
-25% protein (1.5 gram per pound of body weight)
This caloric breakdown is based upon a higher carbohydrate storage (glycogen storage) that
enhances muscular strength, muscular endurance, and athletic performance. The higher level
of carbohydrate (65 percent) supplies a greater level of energy to the muscular system.
The lower fat level (10 percent) decreases your risk for coronary artery disease. The
protein level (25 percent) is increased to offset the nitrogen expenditure from the body
during intense exercise activity and to increase the amount of amino acids supplied to the
body which help build muscle strength and muscle hypertrophy (increase in muscle cell
size).
Carbohydrates
Carbohydrates are converted into sugars. Your level of carbohydrate intake will depend
upon your desired health and fitness goals. Carbohydrates come in two forms:
1. Simple sugars
Simple sugars are used almost immediately during exercise. Examples of simple sugars are
processed sugar and fruit sugar. Consuming simple sugars alone will not help during
endurance exercise.
2. Complex sugars
Complex sugars, also called complex carbohydrates, supply energy to the muscles during
exercise. Muscles store large amounts of glucose or glycogen that supply energy to the
muscles during prolonged exercise. Complex carbohydrates fuel the body during prolonged
exercise. Examples of complex sugars are breads, cereals, grains, pasta, rice, fiber,
potatoes, vegetables and fruits.
Fats
A fat is another term for lipid. High fat intake can lead to obesity, heart disease, heart
attacks, and strokes. The lower your level of fat intake, the lower your risk of
developing coronary artery disease.
However, fat has positive attributes, too. The body must maintain a certain level of body
fat to insulate its inner systems, and to help process vitamins and minerals. Like
carbohydrates, fat also fuels the body during exercise. Your level of fat intake should
depend upon your health and fitness goals.
Examples of foods that are high in fat are cheese, nuts, avocados, cooking oils, and ice
cream. It 's a good idea to restrict your consumption of these types of foods. There are
three types of fat:
1. Saturated fat
Saturated fat intake is the most detrimental to the body. Saturated fat has the highest
number of fatty acids. It can cause clogged arteries, decreased blood flow transfer, heart
attacks, strokes, and other coronary diseases.
2. Polyunsaturated fat
Polyunsaturated fat has fewer fatty acid molecules than saturated fat, and is therefore
better for you than saturated fat. You should have a higher intake of polyunsaturated fat
than saturated fat. Polyunsaturated fat is still detrimental to coronary arteries and
increases your risk for coronary artery disease.
3. Monounsaturated fat
Monounsaturated fat has even fewer fatty acid molecules than polyunsaturated fat, and for
this reason is the best of all three fats. You should have a higher intake of
monounsaturated fat than the other two fats. Monounsaturated fat is still detrimental to
coronary arteries.
Protein
A protein is composed of amino acids, which help to build muscle mass. The higher your
level of muscle mass, the more efficient your basal metabolic rate. An efficient basal
metabolic rate, in turn, increases fat and calorie expenditure at a resting state. Your
level of protein intake depends upon your desired health and fitness goals; consult with a
dietitian to determine your specific protein requirements.
Some foods that are high in protein include egg whites, chicken (white meat), lean beef
(red meat), beans, and skim milk.
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