1.0 Introduction Football is an intermittent team-based sport, with unpredictable changes between high intensity activity and low intensity play (Iaia, Rampinini & Bangsbo, 2009). Football players generally perform low intensity activities for more than 70% of the game, but measurements of heart rate and body temperature suggest that the total energy demand is high (Mohr, Krustup, & Bangsbo, 2003). The repeated intense actions that are performed place high demands on both the aerobic and anaerobic energy systems, and are also a key feature in the fatigue that can occur at any moment in the game (Reilly, Drust & Clarke, 2008). Carbohydrates are perhaps the most important nutritional source for energy production as it is fuel for both energy systems (Burke, Loucks & Broad, 2006). Burke et al., (2006) suggested that football players should aim to achieve a carbohydrate intake that meets the fuel requirements of their training routine and optimizes restoration of muscle glycogen stores. Carbohydrate is stored in the muscles and in the liver as glycogen; muscle fatigue towards the end of a game may be related to depletion of glycogen in the muscle fibres (Reilly, Drust & Clarke, 2008). The high-intensity bursts in football also require a level of strength and power from the athlete, highlighting protein as another dietary essential (Boisseau, Vermorel, Rance, Duché & Patureau-Mirand, 2007). Along with carbohydrates, protein is also significant in the aid of recovery (Nieman,
People who exercise more will have different diets to those who do not exercise. Carbohydrates are very important for athletes as it provides fuel. Carbohydrate is stored as glycogen in the liver and muscles, and released when needed during exercise. It is easily broken down to provide energy. The other source of energy is fat, but this cannot be converted into energy as quickly as glycogen.
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
Carbohydrates are considered high octane fuels. Carbohydrate give you fuel for heavy weight lifting sessions. Carbohydrates are the leading source of energy for your body. Your body draws on carbohydrates when working out, which is stored as glycogen in the muscles. Glycogen is the product of glucose. It comes from the breakdown of carbohydrates after the digestion of food. Glycogen is stored in the liver and muscle. In the process of an intense weight lifting program your glucose level can deplete quickly. This is why it is a must to consume a proper amount of carbohydrates. If you don’t your body will decrease in the amount of weight you can lift and your endurance. The only way to offset this muscle fatigue is too consume the needed carbohydrates. Your diet should consist of 55 to 65 percent of
Kenney, W. L., Wilmore, J. H., & Costill, D. L. (2015). Physiology of sport and exercise (6th
Each athlete has an ideal of training that leads to maximum performance, if not carefully monitored it would lead into a state of consistent fatigue and underperformance (Raedeke, 1997). According to previous research, there are three major causes of overtraining; Lehman suggested that two of the biggest reasons that lead to overtraining are training monotony and the increase of training loads (Wiart, 2010). The third cause is inadequate recovery; Richardson (2008) suggested that looking at monitoring overtraining from a recovery approach may give a better understanding of stress/recovery imbalances in athletes.
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
Athletes need a lot of nutrients to help refuel the energy they burn out to keep them going. Depending on a person’s size, age, or what type of athletic sport they participate in determines how much nutrition they need. Some sports require less energy than others, so you will not want to exceed the amount of nutrients you actually need if you’re not burning a lot. Not taking in enough energy can result in loss of muscles, loss of bone density, injuries, and illnesses that can lead to very long recovery times.
Nutrition is important for athletes as it provides the fuel needed to maintain energy and ensures optimal performance (Nhmrc,2017). Athletes need to provide their body with enough energy for training and ensure proper recovery (medicalnewstoday,2017). In this assignment, I will discuss the strengths and weaknesses in my diet 24 hours before sport. I will also discuss the nutrition a sports star consumes 24 hours before a game and the benefits of eating the correct types of foods.
Carbohydrate intake during exercise performance was normally used in various sports such as cycling, running and also team sports (Febbraio, Chiu, 2000; Tsintzas et al, 1995; Welsh et al, 2002). Athletes could consider a low carbohydrate diet to improve body composition, less stress and faster recovery. Noakes (2014) showed that athletes consumed a low carbohydrate diet managed to ride four minutes longer before reaching exhaustion. A (Nicholas et. al., 1997) study investigated the restoration of high-intensity running capacity following a diet containing additional energy in the form of carbohydrate or fat and protein. However, Hermansen et al (1967) argued that there were high oxidation rates of carbohydrates at 75% of V02
Presented in the Nutrition and Athletic Performance background article are relevant disclaimers on dietary supplements and ergogenic aids, meaning performance enhancers, directed towards athletes. As stated, many sports bars and drinks contain risky ingredients; that is why reading food labels and appropriate ingestion of these products is important. Carbohydrates, often referred to as carbs, are used to make glucose. Glucose is responsible for fueling your body and the energy can be stored. Extra energy storage is found in the glycogen. As Caitlin Campbell and her coauthors discuss in my designated article, conducted studies demonstrate that by drinking carbohydrates, exercise performance is enhanced because of the glucose levels in the blood and the extra storage of glycogen. Sports drinks, bars and gels are forms of carbohydrate-supplements designed to enhance performance for high training athletes. Do carbohydrate supplements, ingested by high endurance athletes, make a difference in their fuel uses and cycling time-trial performance?
Nutrition is extremely important to an athlete’s performance and training. What they eat daily, and weekly will be a huge impact on the athletes performance and energy levels.
It is known that the diet of an athlete can have an effect on his/her overall performance(Bronci; 2011).Athletes, who have healthy and balanced diets, can perform better due to having adequate nutrient stores built up in their
1. Soccer is one of the most demanding of all sports. The game is played on one of the largest fields of any sport, for the longest sustained time and with the least amount of breaks. Players in a soccer team are in continuous activity as they compete for loose balls, move to encourage teammates, rotate positions and run to make a space or test opponents. Running, jumping, sprinting movements in relation with sudden changes of acceleration and route outweigh the play. The power of the game ranges between low-level activities such as walking or jogging to ones of high intensity such as sprinting . This is what is known as intermittent exercise. The rhythm of soccer is dynamic and constantly changing, which is a characteristic that divides it from other endurance sports , this suggests that in order for a midfielder to successfully endure for the entire 90 minutes all three energy systems assist in different stages although the ATP/PC system is dominant.
““They’re an easy and convenient source of complete high-quality protein,” says Carole Conn, PhD, associate professor of nutrition at the University of New Mexico” (Shaw). A professor of nutrition agrees that protein is not only easy and convenient, but also a high-quality and safe source of protein. This essay will feature the pros, cons, and the stance of the author. Dietary supplements are beneficial for high school athletes and although the opposition to supplementation is high, it has been shown that there are numerous positives to supplementing.
Carbohydrates should be considered the most importance macronutrient that should be consumed post exercise, not only as it is a major fuel source in the supply the aerobic (oxidative) system, but it being the only fuel source in anaerobic glycolic system, both of which are heavily utilized in basketball (CITE). In addition, carbohydrates have the ability to muscle protein, muscle glycogen and liver glycogen sparing mechanisms (CITE). During games players, such as LeBron, experience quick bursts of movement over a long duration, which require quick muscle contractions to produce quick movements throughout the game. Therefore, during games in order to produce repetitive quick movements, both anaerobically and aerobically, the muscles heavily rely on carbohydrate metabolism within the muscle and liver to supply ATP as carbohydrates can be readily broken down within the muscle in the mitochondria, the bodies greatest store of muscle glycogen, where it is the muscle glycogen can produce ATP for the muscle three times as rapid (CITE). In addition, the liver is able to metabolize glycogen which can be absorbed into the skeletal muscles rapidly due to specialized transport proteins glucose transporter (GLUT-4), where increased contractions and movement results in increased recruitment (CITE). In order for muscles, especially, to be able to metabolize ATP via muscle glycogen during exercise it is essential muscle glycogen stores are filled back up post exercise in order to sustain high performance and duration for the next performance. Without proper replenishment, specifically of muscle glycogen, post exercise, the output of hepatic glucose decreases at every level of intensity, meaning both intensity and duration are unable to be maintained during the next bout and decreased overall performance (CITE).