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UMass Amherst KIN 110 - kin 110 questions exam 2

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Lecture 16 10 16 13 1 What factors determine the ratio of CHO to fat use during exercise a Intensity b Duration c Genetics gender d Environment e Diet supplements 2 What happens to CHO use and fat use as exercise intensity goes up a As intensity increases CHO use increases and fat use decreases Fat is used at lower intensity exercises 3 What happens to CHO use and fat use as exercise duration goes up a As duration goes up fat use increases and CHO use decreases CHO is more often used in shorter term exercise whereas fat is used during longer term exercise 4 Why does the contribution from fat change as exercise progresses What is the effect on the ability to maintain the desired exercise intensity a Contribution from fat changes because generally CHO runs out due to the rate it is used 5 How does gender affect CHO and fat use What factor is most critical in causing the difference between men and women a Women use more fat progesterone 6 How does a lower CHO diet affect CHO use exercise a More fat burned 7 How does caffeine use affect CHO use during exercise Does this work for everyone a This works better for people who do not use caffeine often It is more helpful to caffeine rookies Lecture 17 10 18 13 1 What is the respiratory exchange ratio 2 How can RER tell you how much energy is coming from CHO and fat 3 What happens to mental performance in a crowded room Why a Mental performance gets worse in a crowded room because of the amount of CO2 present 4 Why does production of CO2 increase so much during exercise a Your body is creating ATP at a fast rate to keep up with the ATP you are using to perform the exercise ATP is formed through oxidative respiration glycolysis Kreb s cycle ETC and a byproduct of this process is CO2 5 How does the CO2 production of a person doing hard exercise compare with a car 6 Why do gyms have such a large carbon footprint a Gyms have such a large carbon footprint because everyone inside is producing mass amounts of carbon dioxide through exercising 7 What are a few of the ways people are trying to make gyms greener a Example The energy harvesting project Lecture 18 10 21 13 1 What are the major dietary sources of protein a Animal products b Some plant c tofu 2 How much energy is contained in amino acids How much of it is available AFTER digestion absorption How much of the absorbed energy is usable energy Why a 5 25 kcal g b after 4 kcal gram c energy in nitrogen group can t be broken down by human enzymess 3 How much does protein contribute to energy expenditure under normal conditions a 4 What are the 2 ways that amino acids from PRO breakdown can enter energy pathways 5 How does exercise affect the contribution of protein to energy expenditure 6 What happens to the protein contribution when glycogen supplies are LOW What happens when glucose is consumed during exercise 7 What other situations increase the contribution of protein to energy expenditure 8 Challenging Q of the day What are the practical implications for people wondering about exercise in the morning vs later in the day Lecture 19 10 23 13 1 Protein excretion on a zero protein diet is 0 4 g of protein per kg of body weight per day Is feeding this quantity of protein enough to maintain normal protein balance If not why not 2 How much protein is needed to maintain protein balance in the average person 3 Is this protein intake the same as the RDA for protein What is the RDA and why is it different 4 Is the RDA sufficient for athletes active individuals What is the recommendation for those people 5 WHY do active people athletes require more protein Give 3 reasons 6 Is there a critical window to eat protein after exercise Why 7 Lets say you have a sedentary person who weighs 60 kg eats 2000 kcal day and gets 12 of their energy from protein 12 of 2000 kcal 240 protein kcal 60 grams 1 0 grams protein kg day more than the RDA What about an athlete who also weighs 60 kg and gets 12 of energy from protein but who eats 3000 kcal day Do they get the recommended quantity of protein Lecture 20 10 25 13 1 What does caffeine use do to body temperature a Increases it 2 What are the major ways the body is cooled during exercise a Evaporation through sweating 3 How much fluid is lost in sweat for an active person How do environmental conditions alter that amount a 2 L hour temperature 4 What are the effects noted when dehydration is 2 of body weight What about at 4 a Dark uring b 5 How can you estimate adequate fluid replacement after exercise a Completely replace 6 What is a practical recommendation to replace fluid losses during hard continuous exercise a of what you lost 7 What is the trade off between heat illness and dehydration Lecture 21 10 28 13 1 What are the major electrolytes 2 How do electrolytes help maintain proper fluid balance 3 What is osmolarity What is the typical osmolarity of blood plasma 4 How does the body measure blood osmolarity 5 What happens to blood volume and blood pressure during exercise in the heat How is that measured by the body 6 What changes in blood sodium do you expect to see in someone who is severely dehydrated 7 Is it possible to OVERhydrate What changes in blood sodium do you expect to see in someone who is overhydrated What is that called 8 What are the common factors associated with hyponatremia during a marathon race 9 What is the point of the new endurance sport drink formulas 10 What should you never do to someone with hyponatremia Lecture 22 10 30 13 1 What is creatine and where is came from 2 Where is creatine stored and in what forms 3 What is the role for creatine phosphate PCr in providing energy for exercise What is creatine kinase and what does it do 4 Does creatine supplementation improve exercise performance If so what KIND of exercise is most likely to be positively affected 5 HOW does creatine supplementation improve exercise performance a Creatine supplementation improves exercise performance by aiding in energy production b Goes from PCr Cr can be used by the muscles 6 Who is most likely to gain a performance benefit from creatine 7 Does creatine supplementation increase muscle mass If so how Lecture 23 11 1 13 1 What is eccentric exercise a Muscle lengethens while the individual sarcomere contracts 2 What causes swelling in response to muscle damage a Inflammatory response 3 What is rhabdomomyolysis a Brown red urine b Membranes of muscle cells rupture and release proteins into blood c Myoglobin is released into the blood and filtered by the


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UMass Amherst KIN 110 - kin 110 questions exam 2

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