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181 Cards in this Set
- Front
- Back
- 3rd side (hint)
Carbohydrates are compounds containing |
Hydrogen, oxygen, & carbon. They are classified as sugars (complex)(cellulose), starches (complex), & fiber. |
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The definition of sugar, as it would appear on a food label, is |
Any monosaccharide or disaccharide. |
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A monosaccharide is a |
Single sugar unit, many of which are connected to make: starch (the storage form of carbohydrates in plants) Glycogen (the storage form of carbohydrates in humans) |
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Monosaccharides include |
Glucose (blood sugar) Fructose (fruit sugar) Galactose |
There are 3 |
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Disaccharides are |
2 sugar units including : Sucrose (common sugar) Lactose (milk sugar) Maltose |
There are 3 |
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Polysaccharides are |
Long chains of monosaccharide units linked together, found in foods containing starch & fiber. |
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Polysaccharides are often called |
Complex carbohydrates , Including starch found in plants, seeds, & roots. |
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Complex carbohydrates are primarily |
Starch & fiber, & the starch is digested to glucose. |
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What is a part of the plants that cannot be digested by human got enzymes? |
Dietary fiber |
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Dietary fiber passes through what? How is it expelled? |
The small intestine & colon Fecal material/fermented & used as food by the good bacteria. |
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Carbohydrates help to regulate what? |
Digestion & utilization of protein & fat. |
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Simple sugars can be easily___ & are found in ___. |
Digested Honey & fruits |
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Double sugars, such as table sugar, require what? |
Some digestive action. |
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Starches, such as those found in whole grain, require what type of digestion? |
Prolonged enzymatic action to be broken down into simple sugars (glucose) for utilization. |
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Cellulose is commonly found in what? How is it digested? |
The skins of fruits & vegetables They are largely in digestible by humans, contributing little energy value to the diet. |
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What provides the bulk necessary for intestinal motility & aids in elimination? |
Cellulose |
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Glycemic index G.I. is the rate at which |
Ingested carbohydrates raise blood sugar & it’s accompanying effect on insulin. |
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How is the G.I. for food determined? |
When the particular food is consumed by itself on an empty stomach. |
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What can alter the glycemic affect of single foods? |
Mixed meals of proteins Other carbohydrates Fat |
There are 3 ways |
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Foods lower on the glycemic index are good sources of |
Complex carbohydrates High in fiber & there are two overall nutritional value |
There are 2 |
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Glycemic index (G.I.) : |
Back (Definition) |
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Glycemic index (GI) for assorted foods : |
Back (Definition) |
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Through the process of digestion and absorption, all disaccharides & polysaccharides are ultimately converted into what? |
Simple sugars such as fructose or glucose. |
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Gradual breakdown of large starch molecules by enzymes in digestion : |
Back (Definition) |
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Fructose must be converted into what before it can be used for energy? |
Into glucose in the liver. |
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Some of the glucose blood sugar is used as fuel by tissues of the |
Brain Nervous system Muscles |
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Because humans are periodic eaters, a small portion of glucose is converted into what? Where is it stored? |
Glycogen after a meals Within the liver & muscles. |
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Any excess glycogen gets converted into what? Where is the store? |
Converted into fat Stored throughout the body as a reserve source of energy. |
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When total caloric intake exceeds output, any excess carbohydrate, dietary fat, or protein may be stored as what? |
Body fat until the energy expenditure once again exceeds energy input. |
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What is one of the greatest contributions made by dietary complex carbohydrate? |
Fiber |
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Higher intakes of dietary fiber are associated with what? |
Lower incidence of heart disease & certain types of cancers. |
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Fiber is what type of carbohydrate? |
Indigestible |
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What are the 2 types of dietary fiber? |
Soluble Insoluble |
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Soluble fiber is |
Dissolved by water & forms a gel like substance in the digestive tract. |
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What are the benefits of soluble fiber? |
Moderating blood glucose levels Lowering cholesterol |
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What are some good sources of soluble fiber? |
Oatmeal Oats Legumes (peas, beans, lentils) Barley Many uncooked fruits & vegetables (oranges, apples, carrots) |
There are 4 |
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Insoluble fiber is |
Not able to absorb or dissolve in water. It passes through the digestive tract close to its original form. |
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What are some of the benefits of insoluble fiber to intestinal health? |
Reduction in the risk/occurrence of : Colorectal cancer Hemorrhoids Constipation |
There are 3 |
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Where does most of insoluble fiber come from? |
The bran layers of cereal grains. |
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What is the recommended intake of fiber per day? |
38 g 25 g for young women/men |
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Additional benefits of fiber include : |
Back (Definition) |
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What is vital for maximal sports performance? |
Carbohydrate availability. |
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When performing high intensity, short duration activity (anaerobic), muscular demand for energy is |
Provided for & dependent on muscle glycogen. |
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What percentage of energy need does muscle glycogen provide during endurance exercise aerobic performed at a moderate intensity (60% VO2 max)? |
~50% of energy needs. |
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During high intensity aerobic exercise, muscle glycogen provides what percentage of energy need? |
It yields nearly all of the energy needs. |
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As duration of activity increases, available glucose & glycogen ___, increasing the ___ as a fuel source. |
Diminish Reliance on fat. |
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If there is an appreciable increase in duration, there must also be a |
Decrease in intensity, decreasing the use of glycogen. |
Glycogen |
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If the workout contributes to a caloric deficit, the body will draw on |
It’s fat stores to make up for the deficit. |
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Fat burns in a ___, maximal fat utilization cannot occur without ___ to continue Krebs cycle activity. |
Carbohydrate flame Sufficient carbohydrate |
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When an endurance athlete “hits the wall”, it is the result of |
Fatigue caused by severely lowered liver & muscle glycogen. |
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What is the recommended amount of carbohydrates that should be included in your diet per day? |
Between 6 & 10 g/kg |
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According to the Institute of medicine, the acceptable macronutrient distribution range for carbohydrate intake for an adult is what? |
45%-65% of total caloric intake. |
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Complex carbohydrates (whole grains, fresh fruits& vegetables) should constitute how many of your calories? Why? |
The majority of your calories. Because of their nutrient dense nature (providing B vitamins, iron, fiber). |
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High-carbohydrate diet’s increase the use ___ as fuel, whereas a high-fat diet increases the use of ___ as fuel. |
Glycogen as fuel. Fat as fuel. |
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A high fat diet results in what? When is this a concern? |
A lower Glycogen synthesis. When the individual is consuming a reduced energy diet. |
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What type of diet will aid in performance in recovery for an endurance athlete? |
A carbohydrate-rich diet. |
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Those on a high-fat diet Performing at a relatively low intensity (less than 70% VO2 max) will see ___. As the intensity of the exercise increases, performance of a high intensity exercise will be ___. |
Improvements Impaired |
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It is recommended that an individual consumer high carbohydrate diet meal how many hours before exercising? How long should they be exercising? |
2-4 hours For more than an hour. |
Allows time for appropriate gastric emptying before exercise. |
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A mill replacement formula maybe used when? When is it the most helpful? |
Time constraints For morning workouts (glycogen stores are lowered by as much as 80%) |
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What should you do to avoid Gastrointestinal distress when eating closer to exercise sessions? |
Eat smaller meals closer to the exercise session. |
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A carbohydrate intake of 1-4.5 g/kg between 1-4 hours before exercise does what? |
Improves performance by 15%. |
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Carbohydrate loading, also called glycogen supercompensation, is a technique |
Used to increase muscle glycogen before and endurance event. (>90mins, Marathon run) |
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Carbohydrate loading (glycogen supercompensation) does what to glycogen stores? |
Doubles muscle glycogen stores, increasing endurance potential. |
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Sports beverages containing what percentage of carbohydrates are recommended for exercise lasting longer than 1 hour? |
6%-8% carbohydrates |
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What percentage of macro nutrient calories should carbohydrates make up when someone is attempting fat loss or muscle game? |
The highest percentage. |
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Glycogen loading schedule : |
Back (Definition) |
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Is there any need for one to reduce carbohydrate percentage to lose fat? |
No. |
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A diet that is centered around low glycemic index carbohydrates may be useful in the prevention of what? |
Obesity Coronary artery disease Breast cancer Colon cancer |
4 diseases |
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The weight lost on a low-carbohydrate diet can be contributed to 2 factors, what are they? |
Low calorie intake Lots of fat free mass (FFM) |
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If an individual begins dropping carbohydrate rich foods from their diet, it is inevitable that |
Caloric intake will drop as well. |
Calories |
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For every gram of glucose taking out of glycogen, it brings with it |
2.7 g of water |
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The loss of my muscle glycogen including water can be quite significant in the ___ of a low carbohydrate diet, adding to the ___ on the scale. |
First week Pounds lost |
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Long-term success in weight loss is associated with what? |
A realistic eating style, not one that severely limits/omits one of the macronutrients. |
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How long is carbohydrate loading (glycogen supercompensation) program? How does it work? |
It’s a week long process. Glycogen depletion - 4 days (Low carbohydrate diet ~10% of calories & exhaustive exercise) Rest & high-carbohydrate diet - 3 days (~90% of calories). |
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There is no change it is constant throughout the years. |
There is no change it is constant throughout the years. |
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The data from NHANES III has shown an increase in what? What do these findings support? |
Total Energy intake. The relationship of excessive energy intake leading to increased fat stores. |
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What are the 2 primary variables responsible for the dramatic rise in obesity over the past 2 decades? |
An increased energy intake A reduction in energy expenditure |
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What percentage of the American population does not partake, on a daily basis, in 30 minutes of low to moderate physical activity? |
More than 75% |
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Americas increasing problem of obesity is not a direct result of carbohydrate intake, but rather of |
Energy imbalance. |
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1 g of carbohydrate yield 4 calories. Carbohydrates provide the body with : |
Back (Definition) |
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The body needs carbohydrates because : |
Back (Definition) |
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Recommended carbohydrate intake : |
Back (Definition) |
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Lipids |
A group of compounds that includes triglycerides (fats & oils), phospholipids, & sterols. |
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95% |
95% |
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What are some of the drawbacks of carbohydrate loading (glycogen supercompensation)? |
Periods of hypoglycemia Irritability Increased susceptibility to injury Difficulty in compliance |
There are 4 |
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In the body, what percentage of stored lipids are also triglycerides? |
99% |
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Structurally, what are triglycerides? |
3 fatty acids attached to a glycerol backbone. |
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1 g of carbohydrate yield 4 calories. Carbohydrates provide the body with : |
Back (Definition) |
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The body needs carbohydrates because : |
Back (Definition) |
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Recommended carbohydrate intake : |
Back (Definition) |
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If a fatty acid has more than one points of unsaturation what is it classified? |
A Polyunsaturated fatty acid. |
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Poly unsaturated fats provide important |
Essential fatty acids (fats that cannot be manufactured by the body, essential for proper health and functioning). |
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What are saturated fatty acids implicated as a risk factor for? Why? |
Heart disease Because they raise bad cholesterol levels (low density lipoprotein‘s [LDL]). |
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Unsaturated fats are associated with Increasing what? What do they decrease? |
Good cholesterol (high density lipoproteins [HDL]) The risk of heart disease. |
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Glycogen loading schedule : |
Back (Definition) |
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What do some athletes experience when attempting glycogen loading? |
Extreme gastrointestinal Diarrhea |
There are 2 |
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Why do many athletes complain that they feel heavy or sluggish when attempting glycogen loading? |
Because leg muscles become heavier with the addition of glycogen & water. |
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What can you do during exercise to help supply glucose to working muscles where glycogen stores dwindling? |
Do carbohydrate feedings for exercise lasting more than 1 hour. |
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Carbohydrate feedings helps to maintain what? What does it increase? |
Blood glucose levels It increases time to exhaustion by 20-60 mins. |
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It is recommended that endurance athletes consume how many grams of carbohydrates every hour? |
30-60 g of carbohydrates |
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Sports beverages including potassium and sodium help to replace what? Carbohydrates provide what? |
Electrolytes Energy |
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Olive & canola oils |
Olive & canola oils |
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What does vitamin D aid in? |
The absorption of calcium, making it available to body tissues (bones & teeth). |
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That’s are involved in the following : |
Back (Definition) |
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Digestion of dietary fat starts in the ___, moves to the ___, & is completed in the ___. |
Mouth Stomach Small intestine |
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In the intestine, the fat interacts with the ___, to become emulsified so that the ___ can break down the triglycerides into ___. |
Bile Pancreatic enzymes 2 fatty acids & monoglyceride. |
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Absorption of these constituents (2 fatty acids & monoglyceride) occurs through what? |
The intestinal wall into the blood. |
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In the intestinal wall, they are reassembled into ___ that are then released into the lymph in the form of a ___. |
Triglycerides Lipoprotein called chylomicron. |
Digestion, absorption, & utilization of dietary fats |
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Chlyomicrons from the lymph move to where? |
The blood |
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The triglyceride contents of chylomicron is removed by What action? What is released? |
The enzyme lipoprotein lipase (LPL). Fatty acids, they are then taken up by the tissues. |
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Throughout the day, triglycerides are constantly cycled |
In & out of tissues including muscles, organs, & adipose. |
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Clients will eventually overeat unless they are satiated by what? |
The amount of calories necessary to allow that loss or energy balance. |
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What can polyunsaturated fatty acids (omega-3 fatty acids) be found in? |
Coldwater fish (salmon) |
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According to the Institute of medicine, what is the acceptable percentage of macronutrient distribution for fat intake for an adult? |
20%-35% of total caloric intake. |
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How does the thermic effect of fat compare to other macronutrients? |
Fat has a lower thermic effect. |
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The thermic effect of food (TEF) is |
The rise in metabolic rate that occurs after food is ingested. |
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TEF typically amounts to what percentage of ingested calories? |
10% |
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As fat percentage in the diet increases the amount of heat given off TEF, does what? |
The TEF decreases. |
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As carbohydrate percentage in the diet increases, TRF does what? |
TEF increases. |
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It is ___ to convert dietary fat to body-fat stores. |
Metabolically inexpensive. |
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What percentage of the calories in fat are required to store it as fat? |
3% |
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What percentage of the calories in carbohydrates does it take to convert to body fat? |
23% |
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Dietary fats stimulate the release of what hormone? What does it do? |
Cholecystokinin (CKK) It signals satiety. |
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Monounsaturated fatty acids & Polyunsaturated fatty acids are considered to have favorable effects on what? They may play a role in the treatment and prevention of what? |
Blood lipid profiles Heart disease, hypertension, arthritis, & cancer. |
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What does fat slow? What does it assist? |
It slows the digestion of foods the nutrient content in the bloodstream) It assist with blood sugar stabilization. |
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The reduction of blood sugar fluctuations can contribute to what? |
Satiety. |
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What do a tablespoon of oil & a large salad with nonfat dressing have in common? |
The same amount of calories. |
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Because satiety is achieved by more than just caloric intake, this low volume, high calorie contribution of fat may not |
Satisfy other peripheral satiation (mechanisms chilling, swallowing, stomach distention), leading to over eating (hyperfagia). |
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What is hyperphagia? |
Over eating |
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Fat is digested & absorbed ___. |
Quite slowly |
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Long chain triglycerides (LCT), which make up the majority of ___, must go through the process of ___ before they can be utilized. |
Dietary fatty acids (16-18 carbons Digestion & absorption. |
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Medium chain triglycerides MCT, are ___ absorbed. |
More rapidly. |
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Medium chain triglycerides (MCT) do not require what? |
Incorporation into the chylomicrons for transport. |
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How to medium chain triglycerides (MCT) get through the body? What do they provide? |
They enter the systematic circulation directly through the portal vein. Providing readily available, concentrated source of energy. |
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The triglyceride molecule : |
Back (Definition) |
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Fatty Acids : |
Back (Definition) |
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What are trans fatty acids? |
The result of Hydrogenation (adding hydrogen to unsaturated fatty acids making them harder at room temp to increase shelflife). |
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Trans fatty acids have been shown to increase what? What do they decrease? |
I : Low-density lipoprotein’s (LDL) cholesterol D : High-density lipoprotein’s (HDL) cholesterol |
Similar to saturated fats |
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What is the most concentrated source of energy in the diet? |
Lipids or fats |
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1 g of fat yields approximately how many calories when oxidized? |
9 cal |
More than 2X the calories per gram of carbohydrates or proteins. |
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Fat access carriers for what vitamins? |
Fat soluble vitamins A, D, E, & K. |
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Olive & canola oils |
Olive & canola oils |
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What does vitamin D aid in? |
The absorption of calcium, making it available to body tissues (bones & teeth). |
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|
That’s are involved in the following : |
Back (Definition) |
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The triglyceride molecule : |
Back (Definition) |
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Fatty Acids : |
Back (Definition) |
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Absorption of these constituents (2 fatty acids & monoglyceride) occurs through what? |
The intestinal wall into the blood. |
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In the intestinal wall, they are reassembled into ___ that are then released into the lymph in the form of a ___. |
Triglycerides Lipoprotein called chylomicron. |
Digestion, absorption, & utilization of dietary fats |
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Chlyomicrons from the lymph move to where? |
The blood |
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The triglyceride contents of chylomicron is removed by What action? What is released? |
The enzyme lipoprotein lipase (LPL). Fatty acids, they are then taken up by the tissues. |
|
|
Throughout the day, triglycerides are constantly cycled |
In & out of tissues including muscles, organs, & adipose. |
|
|
Clients will eventually overeat unless they are satiated by what? |
The amount of calories necessary to allow that loss or energy balance. |
|
|
That’s are involved in the following : |
Back (Definition) |
|
|
According to the Institute of medicine, what is the acceptable percentage of macronutrient distribution for fat intake for an adult? |
20%-35% of total caloric intake. |
|
|
How does the thermic effect of fat compare to other macronutrients? |
Fat has a lower thermic effect. |
|
|
The thermic effect of food (TEF) is |
The rise in metabolic rate that occurs after food is ingested. |
|
|
TEF typically amounts to what percentage of ingested calories? |
10% |
|
|
As fat percentage in the diet increases the amount of heat given off TEF, does what? |
The TEF decreases. |
|
|
As carbohydrate percentage in the diet increases, TRF does what? |
TEF increases. |
|
|
It is ___ to convert dietary fat to body-fat stores. |
Metabolically inexpensive. |
|
|
What percentage of the calories in fat are required to store it as fat? |
3% |
|
|
What percentage of the calories in carbohydrates does it take to convert to body fat? |
23% |
|
|
Dietary fats stimulate the release of what hormone? What does it do? |
Cholecystokinin (CKK) It signals satiety. |
|
|
Monounsaturated fatty acids & Polyunsaturated fatty acids are considered to have favorable effects on what? They may play a role in the treatment and prevention of what? |
Blood lipid profiles Heart disease, hypertension, arthritis, & cancer. |
|
|
What does fat slow? What does it assist? |
It slows the digestion of foods the nutrient content in the bloodstream) It assist with blood sugar stabilization. |
|
|
The reduction of blood sugar fluctuations can contribute to what? |
Satiety. |
|
|
What do a tablespoon of oil & a large salad with nonfat dressing have in common? |
The same amount of calories. |
|
|
Because satiety is achieved by more than just caloric intake, this low volume, high calorie contribution of fat may not |
Satisfy other peripheral satiation (mechanisms chilling, swallowing, stomach distention), leading to over eating (hyperfagia). |
|
|
What is hyperphagia? |
Over eating |
|
|
Fat is digested & absorbed ___. |
Quite slowly |
|
|
Long chain triglycerides (LCT), which make up the majority of ___, must go through the process of ___ before they can be utilized. |
Dietary fatty acids (16-18 carbons Digestion & absorption. |
|
|
Medium chain triglycerides MCT, are ___ absorbed. |
More rapidly. |
|
|
Medium chain triglycerides (MCT) do not require what? |
Incorporation into the chylomicrons for transport. |
|
|
How to medium chain triglycerides (MCT) get through the body? What do they provide? |
They enter the systematic circulation directly through the portal vein. Providing readily available, concentrated source of energy. |
|
|
The triglyceride molecule : |
Back (Definition) |
|
|
Fatty Acids : |
Back (Definition) |
|
|
What are trans fatty acids? |
The result of Hydrogenation (adding hydrogen to unsaturated fatty acids making them harder at room temp to increase shelflife). |
|
|
Trans fatty acids have been shown to increase what? What do they decrease? |
I : Low-density lipoprotein’s (LDL) cholesterol D : High-density lipoprotein’s (HDL) cholesterol |
Similar to saturated fats |
|
What is the most concentrated source of energy in the diet? |
Lipids or fats |
|
|
1 g of fat yields approximately how many calories when oxidized? |
9 cal |
More than 2X the calories per gram of carbohydrates or proteins. |
|
Fat acts as carriers for what vitamins? |
Fat soluble vitamins A, D, E, & K. |
|