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Nutrition for Fitness, Health and Exercise

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Introduction

Unit Title: Nutrition for Fitness, Health and Exercise Unit Number: DT4W34 Assessment Number: 3 Outcome Number: 3 Assessment Type: Assignment (Approx 1000-1500 words) Discuss the contribution of nutrition to fitness, health and exercise Stipulated Date:___________________________________________ Hand in Date:____________________________________________ INTRODUCTION Nutrition is a key aspect of a sports performer's health and well being. This reports aim is to discuss the contribution of nutrition to fitness, health and exercise. "The athlete who wants to optimize exercise performance needs to follow good nutrition and hydration" (ACS,ADA and DC 2000) How Food Energy Is Used And Stored? Used The energy from the nutrient has to be harvested through the energy rich compound ATP which is Adenosine Triphosphate. This is referred to as the "energy currency". The body has to form molecules of ATP from the nutrients so that the ATP can then be broken down and used for energy. By breaking down ATP it allows for the energy needed for muscular contraction to be released. There are 3 ways this could be achieved: * Creatine Phosphate System * Anaerobic System * Aerobic System Creatine Phosphate If you work for 10 seconds at a high intensity work it breaks down the Creatine Phosphate to get the energy Anaerobic System The anaerobic system uses no oxygen, you work 2 to 3 minutes of work. ...read more.

Middle

In this instance the more time your body spends digesting food the more calories it will burn. In order for a person to gain weight their daily intake of food has to exceed the daily amount of energy used. Weight loss occurs when the daily amount of energy used exceeds the daily amount of food intake. Therefore to lose weight you will have to burn off more calories than you take in like doing more exercise. Energy in The factors affecting this are: * Environmental influences * Disease state * Emotional state * Taste of foods * Social influences * Learned preferences * Metabolic factors Factors that mostly affect your energy intake are learned preferences. This is because whatever way you have been brought up tends to affect the way you live. It depends on what you ate as a child and the size of the portion you eat. This caused by being set in a certain routine throughout your childhood. Energy out * Basal metabolic rate (BMR) * Physical activity such as intensity, duration, oxygen availability, muscle fibre type used, pre activity nutrition status * Thermic effect of food Factors that affect your energy output are how much physical activity you do. This includes how hard you work, how long the activity is done for, how much oxygen that the participant can provide. ...read more.

Conclusion

Inadequate nutrition and health CHD Coronary Heart Disease * This is linked to obesity * High cholesterol levels from high saturated fat in the diet * Cholesterol causes "furring" of the arteries * This causes a blockage in a coronary artery then part if the heart might die - CHD * Build up of "plaque" * Happens in the walls of the arteries which supply the heart with blood * Restricts the hearts blood supply which will cause pain (angina) * Stop part of the heart from working (heart attack) A cause for CHD is smoking. This narrows the arteries. Bad diet and lack of exercises increases your chances of being overweight. Stress, high blood energy and family history raise the chances of CHD. Obesity * The fat content of the diet * Most likely to be an energy balance default * Too much taken in and not enough lost leads to weight gain * Medical conditions can be responsible also but environmental conditions are common * Weight to height ratio greater than 30kg per metre squared * BMI over 39 A cause of obesity is that industrialised countries which mean not many people have much to do. Lifestyle and employment is also a reason because everyone has a set routine and longer hours and working more days a week. The main reason for obesity is overeating. Convenience foods have something to answer for. ...read more.

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