1 Flashcards
(158 cards)
Anaerobic or Lactate threshold
the instant when the body must switch from forming energy through the aerobic system and must begin to use the anaerobic pathways to create energy. Increases as person becomes more fit
Maximal oxygen uptake
VO2 max - the most oxygen a person uses when he or she is exercising as hard as possible. Measures the ability of the obdy to make ATP through the aerobic system. As a perosn becomes more fit, he or she will be able to take in and use more oxygen and thus make mor ATP aerobically.
EPOC
excess post - excersie oxygen consumption is how much oxygen is breathed in jsut after strenusous activity is finished.
One Met
3.5 ml of oxygen per kilogram of body weight per minute. 1 met is the rate at which the average person uses oxygen when not exerting himself per pound of bodyweight.
Hepatic portal system
blood draining the slimentary tract (intestines), pancreas, spleen, and gall bladder does not return directly to the systemic cirulation, but is relatyed by the heaptic portal system of veins to and through the liver.
Lining of the heart
Endocardium (lining coat) Myocardium (middle coat) Epicardium (external coat of visceral layer)
Average blood volume
5 or 6 liters
Growth hormone
Induces precuror cells to differentiate and secrete insulin-like growht factor 1 which stimulates cell division, stimulates protein synthesis
Insulin
stimulates fetal growth, stimulates protein synthesis
Cortisol
inhibits growth, stimulates protein catabolism
HDLs
High density lipoproteins considered good cholesterol, these lipoproteins help to clean the walls of the blood vessels and thus prevent atherosclerosis. Optimal level is more than 160 mg/dL
LDLs
low density lipoprotiens, bad cholesterol. deposits form on the walls of the blood vessels and thus increase the risk of atherosclerosis. Optimal level is less than 100 mg/dL
NSCA water intake
- drink 1 half-liter of water two hours before each workout (500 ml or 17 fl oz)
- drink plenty of room temperature water during the workout
- someone doing endurance activites that last more than an hour should drink fluids that have added carbohydrates and electrolytes
Carbohydrate loading
For 3 days before an athletic event, eat a diet composed of 60-70% carbohydrates. After a workout, eat 50 gram sof low fat carbs with a high GI number immediately after fininshined. Then eat another 50 grams of similar GI level food 2 hours later
Fats can only be used for energy when?
in the presence of oxygen
Thermic effect of food
approximately 10% of the food’s calorie count
Normal production of water in a human
2500-2700 ml per day
the average adult is composed of how much percent water?
55-60%
How many liters of water per day?
2-3 liters
Amino acids?
At least 9 amino acids must be found in your diet and cannot be made by your body
Complete protein
Contains all 8 amino acids; meat cheese and poultrt
incomplete protein
plants, nuts, grains, and legumes.
enzymes involved in protein digestion
chymotrypsin, tryspins, carboxypeptidase, and pepsin
NSCA protein intake
15% of calories to be protein