Explain The Levels Of Energy Expenditure

The concept of energy intake and expenditure refers to the amount of calories per day that an individual consumes, and is the chemical energy in foods which can be metabolized to produce energy available to the body. As stated before energy is obtained from the foods we eat and is used to support an individual’s Basal Metabolic Rate, energy is measured in calories or joules as both units are very small they are multiplied by 1,000 and referred to as kilocalories. Different foods provide us with different amounts of energy, and the potential fuel sources available to exercising muscles are fats – 1 gram fat =9.0kcal = 23kJ,

Athletes often overlook the energy demands of daily training sessions. Total calories required are considerably increased for the training and competing athlete versus the average person, but it should be done in the proper % to total daily intake. If sufficient calories are not included in the diet, an athlete will lose to much weight, become fatigued more quickly and performance will

The energy systems used by the human body is categorised into the intensity of the activity performed and the time of which it takes to complete. In sports, she relationship between intensity and time is in most cases inversely proportional seen in the diagram. An example of a sport that is of high intensity and is completed in a short time period is a 100m sprint. In comparison an example of an activity or sport that is of low intensity but takes a long time to complete is a 3000m run.

In our bodies we need energy so that we could do things that are possible such as; move our muscles, talk and all the other things that we do. Without energy all humans would be useless not being able to do anything. Energy is needed to extract the oxygen from the areas in our bodies and diffuse it into our bloodstream. As warm blooded we can only digest food and function if our bodies are at a certain temperature and have enough energy, and energy is required for this. We need energy to move our muscles which also only operate when they are warm. Coldblooded humans use the energy from the environment as well as from their food. Energy is the capacity to do work in our bodies. That means doing

The second component is the metabolic function in the body, which can be used to control blood sugar levels. During exercise this can be tested by the ability to deal with changes in muscle and blood PH, the more active someone is leads to higher endurance to metabolites and therefore less muscle fatigue.

In our bodies we need energy so that we could do things that are possible such as move our muscles, talk and all the other things that we do. Without energy all humans would be useless not being able to do anything. Energy is needed to extract the oxygen from the areas in our bodies and diffuse it into our bloodstream. Supplying enough energy to support the functions of the body in a daily basis is one of the main reasons for food. This energy comes from the fats, carbohydrates, and proteins in the food you eat. Of the three, fat is the most concentrated source of energy. Energy requirements are normally put in terms of calories. The energy requirement for a person is spilt into two parts: basal metabolic requirements and energy required for activity. Basal metabolic rate (BMR) is the heat taken from the body at rest when temperature is normal. An average person requires 2000-2500 Calories per day while the difference for a large man doing heavy work may require up to 6000 Calories per day. When you choose foods that have more energy, or Calories than you need, the excess energy is stored as fat in the body which will results in putting on some weight. If too little food is eaten to meet energy demands, the body's stored fat serves as an energy source and this will result in weight loss. Your weight stays about the same if the energy from food matches the energy requirements of the body. As warm blooded

1) Compare and contrast the energy systems used by yourself completing a run/swim/run event of 200m running, 50m swim and 200m running compared to an elite athlete competing in an ironman triathlon (3.8km swim, 180km cycle, 42km run) (2A) (20 marks)

M4 – Explain the Three Different Energy Systems and Their Use in Different Sport and Exercise Activities

As we eat protein, fat and carbohydrates, as the main energy source, carbohydrates or glucose (simple sugar) break down into complex molecules. We need steady supply of glucose in between meals and at times like doing extensive workouts, there is an elevated demand for

How ever there was a huge change in food intake after participants engaged in High Intensity Exercise. There was a difference shown with a significance of (P<.05). This helped the researchers come to the conclusion that High Intensity workouts are beneficial for the 24 hour energy balance. However it found that these effects usually don’t carry over into the next day. It also showed that while the consumption levels fell the types of food which they consumed did not change

Anaerobic energy is energy that is produced in the absence of oxygen. On the other hand, aerobic energy is energy that is produced in the presence of oxygen. The difference in energy pathway may explain the difference in VO2 increases between interval training and continuous aerobic exercise. Many people struggle to incorporate cardio into their workout routine because they think they must run endless miles to see results. This excuse is invalid because interval training can provide just as many health benefits, if not more, than continuous aerobic exercise. Even though interval training has been shown to improve performance in many people, a blend of interval training and continuous aerobic exercise that is designed for an individual’s goals is the best approach to implement cardio. Interval training results in greater performance increases and more motivation to exercise than continuous aerobic training in many types of people, including well trained athletes, diabetics, children, and people with Down syndrome. However, the most important thing is for people to incorporate cardio into their exercise

Carbohydrates are one of the main fuel sources of energy. Carbohydrates are made of carbon, hydrogen and oxygen molecules. Monosaccharides (glucose and fructose), disaccharides (sucrose) are referred as sugar molecules. Aerobic and anaerobic metabolism work together to provide ATP and energy for exercise (Baker et al, 2010). Skeletal muscles use fat and carbohydrate for energy. Therefore, at high exercise intensities, fat does not synthesis ATP, so fat utilisation has a higher amount of ATP. Therefore, glucose utilisation is necessary for ATP synthesis (Milian, 2013).

Energy comes in the form of chemical, mechanical, electrical and heat. Energy can be converted and cannot be created or destroyed. In nutrition, energy is measured by a unit of kilocalorie or commonly called a calorie. Fifty percent of food kilocalories from eating produce ATP through reactions of glycolysis and in the mitochondria of the cell. Another fifty percent is lost as heat. Energy comes though foods and body energy reserves. Exercise will increase energy metabolism. A basal metabolic rate or BMR is the amount of energy or kilocalories to keep organs functioning and to stay alive. BMR estimates are made with measuring resting metabolic rate or RMR. RMR measures metabolism when a person is not using energy to digest or absorb food and

A major question some people ask is why people work out? Now the simple answer is to stay healthy or to have a toned model-like body. This point is true and extremely valid, there are actual benefits to exercise other than exterior physical results, and there are also interior and physiological aspects to exercise. For example, a lazy individual who is lazy and has an unhealthy diet, his body and himself will be tired this is caused by your body not receiving enough of that necessity of fuel to keep it going throughout the day. I observe it as though your body is like a high performing sports car, and without that right tune ups and fuel your car can’t run to optimal performance. Humans are the exact same way. We need every food group to fuel

Figure 1 Mean percentage of energy intake as protein , fats and carbohydrates with percentage.