Energy expenditure, intake and balance Essay Example for Free

Energy expenditure, in piddle and balance EssayFood is a source of vitality intake as it contains carbohydrates there important function is to store vim in the muscles. Carbs are a macronutrient and come in two different forms, simple which are foods like chocolate and sweets these retire skill quickly, the other form is complex which are foods like pasta and rice they release postcode slower so are better to foreclose energy for a sustained head of meter. There are certain factors that affect energy intake for instance what gender you are affects how very much energy you need, a males guideline daily amount is 2500 calories where as a females is yet 2000 calories. Exercise is a form of energy expenditure it characters up the energy that has been stored in the muscles and causes the em remains to lose fluids through sweat. There are also factors that affect energy expenditure such as basal metabolism this is the amount of energy expended when at rest, the higher the metabolism the more calories you burn meaning that certain people will birth to interchange more energy than others. Climate is a nonher factor that affects expenditure this is because people in hotter climates lose more energy through sweat than people in cooler climates. (200-300 words)Task 2 M1Explain why different nutrients conduct a differing effect on an individuals energy intake. Different nutrients have a differing effect on an individuals intake because distributively nutrient releases a unique amount of energy and also the speed the energy is released varies for each one.For instance the macronutrient carbohydrates are the frames main source of energy intake therefore they release the most energy, but even carbohydrates are split in to two groups when determining the speed the energy is released. The two groups are simple carbs and complex carbs, simple carbs are foods like chocolate and sweets their energy release is very quick giving you a short sharp burst of ener gy but shagnot be sustained for a long expiration of time. On the other hand complex carbs which are found in bread, rice and potatoes release the energy slowly over a longer period of time at a more consistent rate.When talking ab come to the fore other nutrients that release some kind of energy there are single two others, these are amples and protein, fats are like simple carbs releasing only small amounts of energy in quick bursts but their main function for the body is to protect vital organs and provide insulation. Protein is a last resort for energy intake as the energy has to be taken away from the muscles this is only in rare cases where there are no carbs or fats in the body.(200 words)Task 3 P4Describe the following terms organization CompositionBody Composition is used to describe the helpings of fat, bone and muscle in human bodies. Because muscular tissue takes up less space in our body than fat tissue, our body composition, as well as our weight, determines leann ess. Two people of equal height and body weight may look completely different from each other because they have a different body composition.Fat Free bay windowFat Free Mass is comprised of the components that have no fat in the human body. It merchantman refer to any body tissue that does not contain fat these include skeletal muscle, bone and water. (50 words)Lean Body MassLean body mass is the mass of the body minus the fat (lipid). Some methods of working this verboten require specialised equipment such as hydrostatic weighing or DEXA (dual-energy X-ray absorptiometry). Others are very simple such as skin callipers and bioelectrical impedance. (50 words)Task 4 P4Describe the following methods of beat parting body fat Skinfold Analysis- This is a method of measuring body fat percentage by taking touchstones of fat at 4 different points of the body using a set of skin callipers, they are taking at the bicep, tricep, waist and subscapular (shoulder blade) doing this finds out your fat layer thickness. These measurements are then converted into body fat percentage using an equation a male should have around 15% body fat whereas a female should have 20-25% collect to them having breasts etc. (100 words)Bioelectrical Impedance- Bioelectrical impedance measures the resistance of body tissues to the flow of a small electrical signal. The proportion of body fat can be calculated delinquent to the current flowing through the parts of the body that are made up of mostly of water such as blood, urine and muscle this is not possible through bone, fat and air. By doing this it is possible to work out how much body fat the person has by combining the bioelectric impendence measurement with factors such as gender, age, height, weight, and fitness level. (100 words)Hydro densitometry- Hydro densitometry (which is also known as hydrostatic weighing) is weighing someone while they are in water, it is considered to be the most true form of measuring body fat. A very large tank of water is used for this test, firstly a comparison is made between the submersed weight and the dry weight of a person. Due to fat being less dense than the other tissues in the body, it floats more easily. The more fat a person has on their body, the greater the difference between the dry and wet weights. While this method of measuring is very accurate and considered the best way of measuring body fat, not many people use this method because the equipment and test is highly expensive. (100 words)Task 5 M2When comparing skin fold callipers and hydrodensitometry both have their advantages and disadvantages for measuring body composition. The cost of callipers is much less than hydrodensitometry, callipers costing around 15-20 whereas hydrodensitometry can cost anything up to 400.The training needed to use the callipers properly and accurately takes a minimum of 1000 tries but can be performed by anyone on the other hand hydrodensitometry needs a qualified scientist to use the equipment correctly.Again skin callipers hold the advantage over hydrodensitometry when comparing the speed of measurement. Hydrodensitometry can vary from an hour to three hours due to travel time, changing time, time in pool and time for the results to be calculated. While callipers take only 5 to 10 minutes to get the results.Callipers are much easier to carry out in a field setting as the measurements can be taken anywhere, whereas hydrodensitometry testing has to be done in a specialist live with all the expensive equipment.The one advantage hydrodensitometry holds over skin callipers is the level of accuracy of the results. Callipers results are still very accurate but do not have the same precision of hydrodensitometry results, you also have to take in account human error as this could affect them and this isnt possible in hydrodensitometry as computers conclude the results. (250 words)Task 6 D1How can knowledge of an supporters energy intake and expenditure and moni toring of their body composition be used by a pushchair/support team to aid an individuals development with respect to sports performance?Knowledge of an athletes energy intake and expenditure and monitoring of their body composition can be used in many ways by a coach to aid an individuals sport performance.If a coach knows exactly what body fat percentage his athlete has he can determine whether he thinks that is a suitable level for the sport his athlete participates in. For cause if a coach of a sumo wrestler sees hisathlete has low body fat percentage he can put him on a high calorie diet to give him a better chance of matching his opponent, on the other hand if a coach of a marathon runner sees his athlete has a higher body fat percentage that hes competitors he can put him on a specialised diet and make him do more intense workouts.Looking at a players energy intake can also help out the coach in trying to improve his athlete he can work out whether his athlete is getting e nough energy in his diet and whether it has a suitable energy release time. For instance a sprinter may be take complex carbs like bread and pasta before a race which wouldnt be suitable as they release energy slowly, the coach can see this and change it to some simple carbs like chocolate as they release energy In a quick short burst which is much more suitable for a 10 second race.Finally a coach can take into consideration whether his athlete is expending his energy suitably, for example if a football player is going on a 5 mile run before a match the coach can signal that he reduces the distance as he is wasting energy which he should be saving. Expending too much energy in training can also lead to the risk of injury and fatigue so the coach can keep his training at a suitable level for the athlete he is training.Fruit and veg should take up around 33% of your diet they contain the micronutrient vitamins and minerals, the role of vitamins is to help maintain a healthy immune system to fight off illness and infection, whereas minerals are needed for body functions such as hair growth and to keep bones fond.Starchy foods such as bread, rice and potatoes should also take up around 33% of your diet they contain the macronutrient carbohydrates which are required to store energy in the muscles for physical activity.milk and dairy foods such as cream and cheese should take up around 15% of your diet and contain the mineral calcium which is key for maintaining strong bones and teeth.Non-dairy sources of protein such as meats and fish should make up around 15% of your diet these are rich in protein which is needed for the growth and mending of muscles. Red meats such as beef and lamb also provide the body with iron which helps prevent anaemia.Fats and sugars such as chocolate and sweets should only take up 8% of your diet as consuming to many can lead to health problems. They do however provide the body with insulation and an jump-start energy source to carbo hydrates.