Question 1

Chromium serves as a cofactor for potentiating glucagon function.

Accepted Answer

Chromium primarily enhances the action of insulin, not glucagon. It is involved in carbohydrate, fat, and protein metabolism by potentiating the action of insulin.

Question 2

Chromium chloride is the form of chromium that has the best intestinal absorption.

Accepted Answer

Chromium picolinate, not chromium chloride, is often cited as having better intestinal absorption.

Question 3

l-Carnitine is a vasoconstrictor and decreases blood flow and oxygen delivery to tissues.

Accepted Answer

L-Carnitine is involved in the metabolism of fatty acids and energy production in cells, but it does not act as a vasoconstrictor to decrease blood flow and oxygen delivery to tissues.

Question 4

Ribose must be obtained from meat products because the body cannot synthesize it on its own.

Accepted Answer

Ribose is a sugar that the body can produce on its own through the pentose phosphate pathway, and it is not necessary to obtain it from dietary sources, meat or otherwise.

Question 5

Vanadium supplements do not confer ergogenic benefits.

Accepted Answer

Research has shown that vanadium supplements do not provide any significant ergogenic (performance-enhancing) benefits for athletes or individuals engaged in regular physical activity.

Question 6

Chromium potentiates glucagon function.

Accepted Answer

Chromium primarily potentiates the action of insulin, not glucagon.

Question 7

There are limited data to support potential benefits of probiotic supplementation in exercise. However, any purported enhancements to immune system function following exercise would benefit individuals explodes to high levels of physical and environmental stressors.

Accepted Answer

Research indicates that while data on the benefits of probiotic supplementation in exercise are limited, there is potential for probiotics to enhance immune system function, which could benefit individuals exposed to high levels of physical and environmental stressors.

Question 8

Bodybuilders consume vanadium supplements as part of their daily supplement ritual, usually in its oxidized form as vanadyl sulfate.

Accepted Answer

Bodybuilders and athletes sometimes consume vanadium supplements, including its oxidized form vanadyl sulfate, with the belief that it can enhance muscle growth and strength by increasing insulin sensitivity and mimicking insulin's effects.

Question 9

Exercise enthusiasts believe that vanadium provides the "pumped look" to give the "shredded" appearance of muscular hypertrophy characterized by hardness, density, and size because of enhanced muscle glycogen storage and amino acid uptake.

Accepted Answer

Vanadium is believed by some exercise enthusiasts to enhance muscle glycogen storage and amino acid uptake, which can contribute to the "pumped" look of muscles, characterized by increased hardness, density, and size, giving the appearance of muscular hypertrophy.

Question 10

Research generally indicates ergogenic benefits, positive metabolic alterations, and body fat-reducing effects from l-carnitine supplementation.

Accepted Answer

The answer of Research generally indicates ergogenic benefits, positive metabolic...

Question 11

Consuming amino acids in the quantities recommended in commercial supplements benefits the body's hormonal milieu, body composition, and muscle size.

Accepted Answer

While amino acids are essential for muscle repair and growth, there is no conclusive evidence that consuming them in the quantities recommended by commercial supplements significantly benefits hormonal milieu, body composition, or muscle size beyond what can be achieved through a balanced diet. Excessive intake can also lead to potential health risks.

Question 12

Research remains inconclusive about the endurance-enhancing effect of medium-chain triacylglycerol supplementation.

Accepted Answer

While some studies suggest that medium-chain triacylglycerol (MCT) supplementation can enhance endurance by providing a rapid source of energy, other research finds no significant benefits, leading to inconclusive overall results.

Question 13

Consuming triacylglycerols composed mostly of long-chain fatty acids significantly increases gastric emptying.

Accepted Answer

Consuming triacylglycerols composed mostly of long-chain fatty acids actually slows down gastric emptying because they take longer to be digested and absorbed compared to medium-chain fatty acids or carbohydrates.

Question 14

Consuming carbohydrate and/or protein supplements immediately following resistance exercise workouts offers a potential ergogenic effect by elevating insulin and growth hormone levels.

Accepted Answer

Consuming carbohydrate and/or protein supplements immediately after resistance exercise can indeed offer an ergogenic effect. This is because the intake of these nutrients stimulates the release of insulin, which helps in the transport of glucose and amino acids into muscle cells, facilitating repair and growth. Additionally, protein intake can support the release of growth hormone, which further aids in muscle recovery and growth.

Question 15

For individuals with adequate dietary chromium intakes, research fails to show any beneficial effect of chromium supplements on training-related changes in muscular strength, physique, fat-free body mass, or muscle mass.

Accepted Answer

Research indicates that for individuals who already have an adequate intake of chromium through their diet, adding chromium supplements does not provide additional benefits in terms of improvements in muscular strength, physique, fat-free body mass, or muscle mass related to training.

Question 16

Reduced levels of muscle glycogen induce fatigue in intense aerobic and anaerobic physical activity.

Accepted Answer

The answer of Reduced levels of muscle glycogen induce fatigue...

Question 17

The hyperhydration effect of glycerol supplementation reduces overall heat stress during physical activity, lowers heart rate and core temperature, and enhances endurance performance under heat stress.

Accepted Answer

Glycerol supplementation can lead to hyperhydration by increasing the body's total water volume. This additional water helps in reducing heat stress during physical activity by improving thermoregulation, which can lower heart rate and core temperature. Consequently, this can enhance endurance performance, especially in hot conditions, by allowing athletes to maintain a higher level of physical output for a longer duration.

Question 18

Vigilance and mood improve with a carbohydrate beverage administered during a day of sustained aerobic activity interspersed with rest.

Accepted Answer

Carbohydrate intake during sustained aerobic activity helps maintain blood glucose levels, which is crucial for brain function, thereby improving vigilance and mood.

Question 19

Epinephrine contains choline.

Accepted Answer

Epinephrine, also known as adrenaline, is a hormone and neurotransmitter that does not contain choline. It is synthesized from the amino acid tyrosine, not choline.

Question 20

Successful operative outcomes often depend on an optimal nutritional state, which preoperative dietary restrictions often compromise.

Accepted Answer

Optimal nutritional state is crucial for successful operative outcomes, and preoperative dietary restrictions can compromise this state, potentially affecting recovery and healing.

Quiz 12: Nutritional Ergogenic Aids Evaluated