Study Guide for Human Nutrition Test

The initial burst of speed and subsequent 5 seconds in the 100m sprint, is fuelled by the Phosphagen ATP- PC system as there is 4-5 times more Phosphocreatine (PCr) readily available in the skeletal muscles compared to that of ATP (1). The initial ATP stored is used within 2 seconds of maximal activity by the Myosin ATPase enzyme to cleave energy, leaving Adenosine Diphosphate (ADP)

As Jim’s muscles are at maximum demand, his mitochondria are unable to produce the needed ATP through aerobic respiration because oxygen is unable to diffuse fast enough into his muscle fibers. At this time anaerobic

The first of three energy pathways is ATP/CP energy pathway. Adenosine triphosphate (ATP) is an organic compound found in muscle which, upon being broken down enzymatically, yields energy for muscle contraction. Creatine phosphate is a high energy phosphate molecule that is stored in cells and can be used to immediately resynthesize ATP. ATP/CP pathway provide anaerobic sources of phosphate-bond energy. The energy liberated from hydrolysis of CP re-bonds ADP and Pi to form ATP. The energy pathway can be found in such sporting events such as short sprint, shot put, softball pitch, lifting weights for three repetitions or less because they

Use Ch. 1 of Contemporary Nutrition, Ch. 2 of Visualizing Nutrition, supplemental course materials, the University Library, the Internet, or other resources to answer the following questions. Your response to each question should be 75 to 100 words.

I have recently been taking a course in college called Nutrition 251, and it focuses on the principles of nutrition. In this class, I had to read a book from Michael Pollan called In the Defense of Food. As I read, I could not help but remember all the things I have eaten. Pollan explains how food changed over the years in the US and goes into great detail in how the industrialization of our food has impacted our ways of eating, poisoning us with refined and processed foods. Reading Pollan’s work made me realize that the food we eat is not actually food. Back then, food was grown and not scientifically engineered to provide humans with the nutrition we need. This book and course gave me a lot of reasons why we, as a family, should be more

Usually relying on ATP production for energy is alright except for two problems. The first is that ATP is produced at a slow rate, too slow to supply the energy needed to run a 200-meter sprint, for example. The second problem is that ATP production takes a while to get started. As one goes from rest at the starting line of a race to running at race speed, for example, the traditional method of ATP production does not begin working at full capacity until a couple of minuets have passed. Another source of energy is therefore needed to get one through the early moments of a race or workout. (http://www.creatine.com/creatine.html#source)

Two-hundred overweight/obese individuals will be subjected to my evaluation plan. Upon completion of the nutrition 2-hour workshops and questionnaire about current eating habits, participants will be randomly placed into either the breakfast eating group or the non-breakfast eating group. This randomization will occur via computer programing. Participants will then be measured for weight and height via balance beam and scale stadiometer. Body mass index will be measured via XA model Lunar DPX-IQ. A plastic- flexible tape measure will be used to measure hip circumference.

The muscle ATP production in vivo indicate that brief maximal contraction were performed with increased support of oxidative ATP synthesis relatively less contribution from anaerobic ATP production. After 2 weeks of training the maximal intensity contraction increased, resulting in ATP production from oxidative phosphorylation greater than the CK reaction and glycolysis relatively lower after

combustion. Oxidation, need for life. The ATP is used for a variety of different life activities

Your body also uses adenosine triphosphate know as ATP the problem with this is your body only has small stores of both glucose and ATP. After quickly using up these stores, the body requires extra oxygen to create more ATP. More blood begins being pumped to the exercising muscles delivering additional O2. Without the appropriate amount of oxygen, lactic acid will form instead. Lactic acid is removed from the body 30 to 60 minutes after completing a workout.

During intense activites, anaerobic energy is the major contributor for 1 to 3 minutes. Because of intense muscle contractions, there is a limited oxygen supply from the constricted blood vessels.

Your post is well articulated. I agree with you nutritional status assessments. In addition, to your assessments, Mr. J takes multiple daily medications such as; furosemide (Lasix), potassium chloride, and phenytoin (Dilantin). A person who takes multiple daily medications is at higher risk for nutritional alterations due to medication side effects, which may alter appetite. Furthermore, he is at a higher risk for altered nutrition due to his history of chronic obstructive pulmonary disease which affects his appetite & also his admitting diagnosis; pneumonia (Sole, Klein, Moseley, 2013, p. 81). The patients’ nutritional status signify that they need intervention which requires the collaboration of the nurse, dietician, physician,

from the actin. He also states when energy is released from the conversion of ATP to

The ATP/PC system, which lasts up to 10 seconds, is the body’s initial source of fuel and is reliant on its stores of ATP and CP and provides the required burst of energy without the presence of oxygen for high intensity purposes. This burst of energy is due to separating of the chemical bonds between the Phosphate and Creatine which releases additional energy that helps produce more ATP so that we have it upon requirement for only a short period of time. This system is the most dominant system because this system is

In the phosphocreatine system, ATP is produced when there is a high demand for energy, as said previously, in activities such as the 100 meter sprint. This process occurs between two molecules of ADP and phosphocreatine (PCr). PCr donates its phosphate group to ADP to form ATP allowing for quick energy. This is called the creatine phosphate shuttle and only lasts approximately 6-8 seconds. After PCr donates its phosphate group, the molecule coverts into creatine and is later able to replenish its phosphate group. This process is said to be in equilibrium, since the phosphate group can be transferred back and forth between ATP and PCr. The reason for a short period of sustainability is because PCr is stored in the cells of muscles in small amounts, varying in genetics. When the body is at rest and there is an abundance of ATP, the body will replenish the phosphate group in the crea-tine molecule forming PCr once again for later use.