GLOSSARY
OF
TRAINING AND NUTRITION
TERMS
PART II
D
Depletion -- Exhaustion following a workout before the body has fully recuperated. Never train when feeling depleted.
Dehydroepiandrosterone (DHEA) -- Ruled a drug by the FDA several years ago, DHEA shows powerful
DL-Phenylalanine -- DLPA is a mixture consisting
of equal parts of the D- and L-forms of phenylalanine. Phenylalanine is
a
naturally occurring amino acid, discovered in 1879, essential for optimal
growth in infants and for nitrogen equilibrium in human
adults. DLPA is used in the control of pain, through a mechanism believed
to involve a sparing effect on opiate-like substances
naturally secreted by the brain (i.e., endorphins and enkephalins).
DNA (Deoxyribonucleic acid) -- A complex
protein present in the nuclei of cells.The chemical basis of heredity and
carrier of
genetic programming for the organism.
Double split training -- Working out twice
a day to allow for shorter, more intense workouts. (See Variable split).
E
Eccentric contraction -- Muscle lengthens while maintaining tension.
Eicosapentaenoic acid (EPA) -- A fatty
acid found in fish and fish oils which is believed to lower cholesterol,
especially
cholesterol bound to low density lipoproteins (LDL).
Ejection fraction -- The percentage of
blood inside the hearts left ventricle that is pushed out into the body
after contraction. The
average training athlete, working at 80 percent maximum, ejects about
75%. This factor is positively effected by either anaerobic
or aerobic training.
Electrolytes -- Minerals such as sodium,
potassium, chloride, calcium and magnesium that provide conductivity functions
for fluid
passage (osmosis) through cellular membranes. Electrolytes are molecules
that dissociate into cations or anions (see ion) when
fused or in solution, thus capable of conducting electricity.
Electron microscope -- A microscope that
uses electrons instead of visible light to produce powerfully-magnified
images of
objects smaller than the wavelengths of visible light. Electron microscopy
has greatly advanced sports science by unfolding the
subcellular dynamics of energy and contractile processes, and how they
are effected by specific types of training. This has
allowed trainers to develop better programs of training for greater
strength, endurance or hypertrophy (based on precise applications of training
stress).
Endocrine -- endocrine refers to a secretion that flows directly into the bloodstream. It is the opposite of exocrine.
Endocrine glands -- Organs which secrete
hormones into the blood or lymph systems to regulate or influence general
chemical
changes in the body or the activities of other organs. Major glands
are the thyroid, adrenal, pituitary, parathyroid, pancreas,
ovaries and testicles.
Endorphins -- Brain chemicals that ease
or suppress pain. D,L-phenylalanine, an amino acid, intensifies and prolongs
the effects
of these natural painkillers.
Energy transfer systems efficiency -- The
ability of your body to continually synthesize ATP under aerobic or anaerobic
conditions.
Enzymes -- Enzymes are a type of chemical
ferment-protein secreted by or contained within cells, which act as catalysts
to
induce chemical changes in other substances without being changed themselves.
Enzymes are specific in their actions, acting only
on specific substances called substrates. They are present in the digestive
fluids and in many of the tissues, and are capable of
producing in small amount the transformation on a large scale of various
compounds. They are divided into six main groups:
oxidoreductases, transferases, hydrolases, lyases, isomerases and ligases.
Estrogen -- Estrogen, the female hormone,
is a generic term for estrus-producing steroid compounds which are formed
by the
ovaries, placenta, testes, and adrenal cortex. They can also be isolated
from plants or produced synthetically.
Besides stimulation of secondary sexual characteristics, they exert
systemic effects, such as growth and maturation of long
bones. Estrogens are used therapeutically in any disorder attributable
to estrogen deficiency, to prevent or stop lactation, to
suppress ovulation, and to ameliorate carcinoma of the breast and of
the prostate. Estrone and estradiol, both estrogens, induce
the growth of female genital organs and stimulate the changes characteristic
of the estrus cycle.
F
Fast-twitch fibers -- White muscle cells
that fire quickly and are utilized in strength-dependent anaerobic activities
such as
sprinting and powerlifting.
Fat -- One of the three basic foodstuffs
(along with carbohydrates and protein). The most concentrated source of
energy in the
diet, furnishing twice the calories of carbs or proteins. The components
of fat are fatty acids -- saturated or unsaturated.
Saturated fatty acids are generally solid at room temperature and are
derived primarily from animal sources. Unsaturated fatty
acids, on the other hand, are usually liquid and come from vegetable,
nut, or seed sources.
Fat deposits surround and protect organs such as the kidneys, heart
and liver. Fats are the primary substance of adipose tissue.
A layer of fat beneath the skin, known as subcutaneous fat, insulates
the body from environmental temperature changes thereby
preserving body heat.
Fat-Soluble Vitamins -- The fat-soluble
vitamins are vitamin A, vitamin D, vitamin E, and vitamin K. They are vitamins
which can
be dissolved in fats or fatty tissue.
Fat (total) -- Total fat describes the
fat consumed from both saturated and unsaturated sources, High intake of
total dietary fat
increases risk of obesity, some types of cancer, and possibly gallbladder
disease.
Fatigue -- State of decreased capacity for work due to previous workload.
Fatty acid -- One of the building blocks
of fat. Used as fuel for muscle contractions. Fatty acids aid in oxygen
transport through
blood to all cells, tissues, and organs. They help maintain resilience
and lubrication of all cells, and combine with protein and
cholesterol to form living membranes that hold body cells together.
They break up cholesterol deposits on arterial walls, thereby
preventing arteriosclerosis. Fatty acids are necessary for the function
of the thyroid and adrenal glands.
Fiber (muscle) -- The long and string-like
muscle cells which contract to produce strength. They range from microscopic
size to
one foot long. There are several hundred to several thousand individual
groups (fasciculi) of fibers in each major muscle
structure. These groups are something like pieces of string bound tightly
together inside a protective sheath.
Fiber (dietary) -- The part of plant food
that is not digested by the human body, such as the husk of whole grains
and the skin of
an apple. Healthy intestines and regular elimination require adequate
fiber, generally provided by complex carbohydrates. A diet
low in fiber is associated with constipation, intestinal disorders,
varicose veins, obesity and heart disease.
Fitness -- A layman's definition of fitness
may be as follows: "Your ability to meet the exigencies of your lifestyle
with ease -- and
room to spare for life's little emergencies." Thus, what constitutes
"fitness" for one person isn't necessarily fitness for our dog.
Each subject needs a different level of fitness than do another because
the demands of their lifestyles are different.
Listed below are the traditionally identified components of fitness
and a down-to-Earth definition of each. The best methods for
augmenting each fitness component are also mentioned. No single technology
works best alone. An "integrated" approach which
incorporates several (or all) of the available technologies is best.
Flexion -- A bending movement in contrast to extending, as in flexions.
Flush -- Cleansing a muscle of metabolic toxins by increasing the blood supply to it through exertion.
Folic acid -- A B-complex vitamin essential
in formation of red blood cells and metabolism of protein. Important for
proper
brain function, mental and emotional health, appetite, and production
of hydrochloric acid. Very often deficient in diets. RDA:
400 micrograms. Dietary sources: green leafy vegetables, liver, brewer's
yeast.
Food allergies -- Sensitivities to certain foods which can cause both mental and physical symptoms.
Forced repetitions -- Assistance to perform
additional repetitions of an exercise when muscles can no longer complete
movement on their own.
Free Radicals -- Free radicals are highly
reactive molecules which target your tissues' protein bonds, the DNA in
your cells'
nuclei and the important polyunsaturated fatty acids within your cells'
membranes. Once initiated, a chain reaction begins that
ultimately results in the total destruction of that cell. Scientists
have determined that over 60 age-related maladies are a direct
result of long-term damage resulting from free radical activity. There
are seven different "species" of free radicals.
SPECIES OF FREE RADICALS CORRESPONDING ANTIOXIDANTS
______________________________________________________________
Superoxide Anion Radical Green Tea (GTA)
Vitamin E
Vitamin C
Glutathione (GSH)
Maria Thistle (assists GSH)
Ginkgo Biloba
Hydrogen Peroxide Green Tea (GTA)
Glutathione (GSH)
Maria Thistle (assists GSH)
Ginkgo Biloba
Hydroxyl Radical Vitamin C
Ginkgo Biloba
Singlet Oxygen Vitamin A
Vitamin E
Glutathione (GSH)
Maria Thistle (assists GSH)
Selenium & Bilberry (assists Vit. E)
Ginkgo Biloba
Polyunsaturated
Fatty Acid Radical Vitamin A
Vitamin E
Selenium & Bilberry (assists Vit. E)
Maria Thistle
Organic /Fatty Acid
Hydroperoxides Glutathione (GSH)
Maria Thistle (assists GSH)
Ginkgo Biloba
Oxidized Protein Glutathione (GSH)
Maria Thistle (assists GSH)
Ginkgo Biloba
___________________________________________________________
Freestyle training -- Training all body
parts in one workout (obsolete phrase).
G
Gamma oryzanol -- A substance extracted
from rice bran oil which some athletes believe has non-steroidal, growth-promoting
properties when taken as a supplement. It allegedly helps increase
lean body mass and strength, decreases fatty tissue, improves
recovery from workouts, and reduces post-workout muscle soreness. Recently,
in preliminary testing, the active ingredient -- ferulic acid (aka "trans-ferulic
acid") -- was reported to exert an even more pronounced effect than Gamma
Oryzanol. The jury is still out.
Ginko Biloba -- Native to China and Japan,
the ginkgo tree lives over 1000 years! The active component of ginkgo leaves
are
quercetin and the flavoglycosides. Ginkgo extract is shown to 1) reduce
clots or thrombi formation in the veins and arteries, 2)
increases cellular energy by increasing cellular glucose and ATP, 3)
scavenges free radicals, 4) prevents the formation of free
radicals, 5) reduce high blood pressure, and 6) promotes peripheral
blood flow (especially to the brain), and ameliorates inner
ear problems. Ginkgo also has been shown to improve alertness, short-term
memory and various other cognitive disorders.
Glucagon -- Glucagon is a hormone secreted
by the alpha cells of the pancreas, which stimulates the breakdown of glycogen
and the release of glucose by the liver thereby causing an increase
in blood sugar levels.
It works in direct opposition to insulin. Liver glucose is freed when
the blood sugar level drops to around 70 milligrams/100
milligrams of blood. Exercise and starvation both increase glucagon
levels, as does the presence of amino acids in the blood after
a high protein meal. Glucagon produces smooth muscle relaxation when
administered parenterally.
Glucose (blood sugar) -- A simple sugar,
the breakdown product of carbohydrates that becomes the raw material for
energy
production inside cells.
Glucose-lactate cycle (Cori cycle) -- The
metabolic partnership between muscles and liver to support active muscle
work.
Refers to the sequence involving breakdown of carbohydrates, glycogen
storage in liver, passage of glucose into the
bloodstream and subsequent storage in muscle fibers as glycogen, the
breakdown of glycogen during muscle activity, the
production of lactic acid in this process, and the conversion of lactic
acid to glycogen again.
Glucose polymers -- A state-of-the-art
low glycemic carbohydrate supplement that delivers a steady source of energy
for
workouts and restoration. "Branching" glucose polymers (i.e., glucose
molecules comprised of differing glycemic indexes due to
their structural complexity) are available as drinks, powders and tablets.
Glucose Tolerance -- Glucose tolerance refers to an individual's ability to metabolize glucose.
Glycemic index -- A rating system that
indicates the different speed with which carbohydrates are processed into
glucose by the
body. In general, complex carbohydrates are broken down slower, providing
a slow infusion of glucose for steady energy.
Refined, simple carbohydrates usually are absorbed quickly, causing
energy-disturbing fluctuations of glucose.
Glycogen -- The common storage form of
glucose in the liver and muscles that is biochemically processed as part
of the
energy-producing cycle. Glycogen, a polysaccharide commonly called
animal starch, is readily converted into glucose as the
energy needs of the body require.
Glycolysis -- Glycolysis is the anaerobic enzymatic energy-yielding breakdown of glucose into pyruvic acid or lactic acid.
Glycolytic Sports -- Sports such as pit fighting and other long sprint or mid-distance sprints wherein the glycolytic pathway of muscle energy production (the breakdown of muscle sugar, glycogen, in order to produce more CP and ATP) is involved (see glycogen, ATP and CP).
Golgi tendon organs -- Nerve sensors ("proprioceptors"),
located at the junction of muscles and tendons, that pick up messages
of excess stress on the muscle and cause the brain to shut off muscle
contraction. Called "the feedback loop," this shut-off
threshold can be pushed back or delayed (e.g., toward one's maximum
strength potential) through "jerk training," where they
carefully perform repeated submaximum pulings with weights. (See proprioceptors,
proprioception).
Green Tea -- Green tea, also known as GTA
(green tea antioxidant) or GTE (green tea extract), has been clinically
shown to be
as much as 200 times more effective than vitamin E at scavenging hydrogen
peroxide and superoxide anion radicals (see Free
radicals). As such, it is perhaps the most potent antioxidant kknown
to man in its ability to prevent 1) antibacterial and antiviral
activity, 2) anti-platelet and hyocholesterolemic activity, 3) lung
cancer due to smoking, 4) skin damage and skin cancer due to
radiation, 5) a host of other age-related maladies. The active ingredients
of green tea are called polyphenol catechins, with
(-)-Epigallocatechin Gallate (EGCg) being by far the most important.
Green tea is unprocessed; black tea is the same plant but
highly processed; Oolong tea, also from the same plant, is partially
processed tea..
Growth hormone (GH) -- A growth hormone
is any substance that stimulates growth, especially one secreted by the
pituitary
(somatotropin) which exerts a direct effect on protein, carbohydrate
and lipid metabolism, and controls the rate of skeletal,
connective (collagenous) tissue and visceral growth.
H
Heart rate -- The number of times the heart beats in one minute.
Hemoglobin -- Hemoglobin is a crystallizable,
conjugated protein consisting of an iron-containing pigment called heme
and a
simple protein, globin. It is the pigment of red blood cells. Hemoglobin
carries oxygen from the lungs to the tissues.
Hormones -- Hormones are chemical substances
which originate in an organ, gland, or body part, and are conveyed by the
blood to affect functions in other parts of the body.
Hyperglycemia -- Hyperglycemia is a condition
of abnormally high concentration of glucose in the blood, especially with
reference to fasting level.
Human Growth Hormone (hGH) -- A hormone
secreted by the anterior pituitary gland in response to various stressful
stimuli
such as heat, starvation and intense physical stress (e.g., exercise),
as well as by an innate pulsatile periodicity. The principal
functions of hGH are to stimulate anabolism and to mobilize stored
fat (triglyceruides) for energy, thus sparing muscle glycogen.
Hyperplasia (muscle splitting) -- A controversial
subject among sports scientists regarding the possibility of muscle fibers
to
actually split, giving more strength from increased contractile potential
and/or connective tissue.
Hypertrophy -- Increase in both gross muscle
size as well as individual muscle cell size resulting from training (especially
weight
training); due to the adaptive process whereby the muscles add more
mitochondria, sarcoplasm, myofibrils, interstitial substances
such as water, fat, satellite cells, etc. in response to highly specific
forms of stress.
Hypoglycemia -- Hypoglycemia literally
means "low blood glucose level". There are two general categories of this
disorder:
fasting (or spontaneous) and reactive.
In fasting hypoglycemia, serum glucose levels are low in the fasting
state (for example, before breakfast).
In reactive hypoglycemia, fasting glucose levels are normal. They become
abnormally low only in reaction to the increased serum
levels of glucose which follow the ingestion of a meal.
I
Impulse-inertial training -- A system originally
designed for NASA space stations (where there's no gravity -- dumbells
and
barbells would be useless in space) whereby a moving, weighted sled
is alternately moved very rapidly back and forth on a set
of tracks in order to effectively improve starting strength (see starting
strength).
Inertia -- The tendency of an object to remain in its current state (in motion or at rest).
Innervation Ratio--The number of muscle
cells innervated by the axons of a single motor neuron. Muscles that require
a high
degree of control and precision (such as the eye) have a high innervation
ratio (meaning that each motor neuron controls only a
few muscle fibers), while muscles responsible for relatively gross
movements require a low innervation ratio.
Inosine -- Inosine is a naturally-occurring
compound found in the body that contributes to strong heart muscle contraction
and
blood flow in the coronary arteries. As a supplement taken before and
during competition, it stimulates enzyme activity in both cardiac and skeletal
muscle cells for improved regeneration of ATP. What this means in training
terms is that they'll be able to get a rep or two more out of themself
in each set. It means that they'll be able to do the wind sprints with
greater stamina. Better workouts equals better gains.
Inositol -- A B complex vitamin. Combines
with choline to form lecithin, protecting against the fatty hardening of
arteries and
cholesterol buildup. Important in the nutrition of brain cells. Promotes
healthy hair. Dietary sources: liver, brewer's yeast, dried lima beans,
beef brains and heart, cantaloupe.
Insertion -- The attachment of a muscle to the more moveable or distal (farther from the center of the body) structure.
Insulin -- Insulin is a peptide hormone
made of two polypeptide chains, and is secreted from the beta cells of
the pancreas. The
function of insulin is to increase the ability of certain organs, such
as muscles and the liver, to utilize glucose and amino acids.
Insulin also increases the total quantity of protein in the body by
increasing the flow of amino acids into cells, accelerating
messenger RNA translation, and increasing DNA transcription to form
more RNA.
Insulin is essential for the proper metabolism and proper maintenance
level of blood sugar. Secretion is primarily dependent
upon the concentration of blood glucose, an increase of blood sugar
bringing about an increase in the secretion of insulin.
Inadequate secretion of insulin results in improper metabolism or carbohydrates
and fats and brings on diabetes characterized by
glucose accumulating in the blood and wastefully excreting in the urine.
Insulin-like Growth Factors (IGF-I & IGF-II)
-- IGF-I and IGF-II are liberated into the interstitial spaces surrounding
muscle
cells (especially Type IIb fibers) damaged by severe stress (especially
eccentric contractions). Their collective function is to
ensure bonding between the nearby satellite cells with the damaged
fiber, thereby decreasing that fiber's proneness to injury. It is
theorized to be the single most contributory factor in muscle hypertrophy.
Insulinomimetics -- There are several herbs that have been widely used for centuries for their apparent insulinomimetic value:
Iodine -- An essential element for the function of the thyroid gland, which regulates metabolism and energy. Dietary sources: All seafood, kelp.
Ion -- An ion is an atom or molecule which
carries an electric charge; it can be either a cation or an anion. The
most important
cations in the body are sodium, potassium, calcium and magnesium (the
electrolytes). The most important anions in the body are
bicarbonate, chloride, phosphate and sulfate.
Iron -- Combines with protein and copper
to make hemoglobin, a pigment that colors the blood red and which carries
oxygen
through the bloodstream from the lungs to all bodily tissue. Also forms
myoglobin, which transports oxygen in muscle tissue for
use in fueling contractions. Deficiency is common in athletes. Without
enough iron, they cannot train. Iron is easily lost through
sweat, urine, feces and menstrual blood. Runners in particular are
suspected of inefficient absorption of dietary iron. Dietary sources:
liver, oysters, lean meat, leafy green vegetables, whole grains, dried
fruits, legumes.
Isometric Contraction -- A muscular contraction
in which the muscle retains its length while increasing in tension, but
no
movement occurs. Also called static contraction.
Isotonic Contraction -- A concentric muscular
contraction in which the load remains constant but the tension varies with
the joint
angle. Also called dynamic contraction.