Note: Sample below may appear distorted but all corresponding word document files contain proper formattingExcerpt from essay:
In a comparative study, Klein and colleagues (1994) studied the overall fat metabolism ratios for endurance-trained and untrained men during low-intensity exercise routines. They sample a total of 10 men, 5 who were endurance-trained athletes and 5 who were untrained. They started off by calculating and analyzing the overall lipid activities and muscle activities while all 10 subjects were resting before the exercise routines began. They also calculated the free fatty acid (FFA) and glycerol rate of appearance (Ra) ratios. The calculated the lipid activities using indirect calorimetry as a determinant and the FFA and glycerol levels through the combination of glycerol (2H5) and palpitate (1-13C) one after another (Klein et al., 1994).
The results showed that the lipolytic reaction after 4 hours of high-intensity training routines showed no significant variations in the overall FFA and glycerol levels between the endurance-trained subjects (increase in a minimum of 1.02/kg to 3.76/kg and increase in a maximum of 9.85/kg to 24.64/kg) and the untrained subjects (increase in a minimum of 0.99/kg to 0.39/kg and increase in a maximum of 11.29/kg to 24.13/kg). The variation between the trained and untrained subjects occurred in the average triglyceride oxidation levels during the high-intensity exercise sessions. The trained subjects showed a high maximum of 7.51/kg and the untrained subjects showed a lowered maximum of 5.67/kg. Furthermore, during the recovery session of the exercises, the untrained subjects experienced a slower speed of decreased FFA and glycerol Ra levels in comparison with the trained subjects even though the overall decrease in the ratio was more or less similar as has been numerically exhibited above (Klein et al., 1994).
Analyzing the results of the above study, it is east to assert that the in spite of having similar FFA, lipolysis and glycerol levels, the endurance-trained individuals and athletes experience higher levels of fat burning then the untrained athletes. This is because they burn more fat tissues in their endurance exercise routines. Further analysis help us assert that the lipid activities get back to the baseline at a much slower rate for the untrained subjects then the male subjects.
In a separate and dissimilar study, Starling and colleagues (1996) took a different approach to analyzing the impact of endurance exercise by analyzing the impact that the diet of an individual has on his overall muscle triglyceride and endurance performance ratios. They took a sample of seven endurance-trained athletes who had the average of completing 120 minute cycling exercise with a maximum intake of oxygen at nearly 65% ratios. The diet changes introduced in the subjects daily routine included an intake of either a high-fat (Hi-Fat; with 68% of energy) or an isocaloric high-carbohydrate (Hi-CHO; with 83% of energy) diet for a total of 12-hour period. At the end of the 12 hours and after an overnight fast, the subjects went through an exercise routine of 1,600-kJ self-run cycling. Even though the muscle triglyceride levels before and after the cycling exercises were not so different before the new diet incorporation; the levels significantly increased for the Hi-Fat diet after it was incorporated into the daily intake of the athletes. The levels showed an increase in the minimum levels from 2.4 to 7.1 minutes and an increase in the maximum levels from 44.7 to 117.1 minutes for the Hi-Fat diet plans (Starling et al., 1996; see also Hochli et al., 1995; Morgan, 1992; McArdle et al., 1996c).
After analyses of the data and results from the above study, we can conclude that the diet of an athlete has a significant role to play on the overall impact that the endurance training exercises can have on muscle fat metabolism and oxidation levels that an individual goes through. Hence, it is extremely important to have a balance of not only the exercises, in term of the high-intensity and low-intensity exercise combinations as well as their durations, but it is also very important to make sure that the diet one has compliments each and every aspect that is being aimed to improve through the use of the exercise routines.
In this paper, the effects of endurance training were discussed with special reference to their impact on the muscle fat metabolism while prolonged exercises. The paper talked about the inconclusive nature of prior studies and then analyzed the prior result already achieved to form lucid conclusions on eth topic. The paper gave particular attention to the importance of exercise for athletes and how the use of endurance exercise impacts their muscle and fat metabolism. In the paper the differences in the fat metabolism between men who are endurance trained and those who are not were also discussed along with the influence of endurance training on muscle kinetics during high-intensity exercise, influence of repeated sprint training on pulmonary O2 uptake and muscle deoxygenation kinetics in humans, the effects of diet on muscle triglyceride and endurance performance as well as the possible increased physical activity decreasing the hepatic free fatty acid uptake. For further suggestions, one aspect that hasn't been discussed in the paper is the importance of the membrane transporters within the realm of endurance exercise. Hence, researches must analyze the aspects of molecular biology of membrane transporters as well as clear identification of the roles of membrane transporters and molecules must be done to really understand the effect that they have on the on fat metabolism levels of an athlete or an individual who is endurance-trained or untrained.
Bailey, S.J., Wilkerson, D.P., DiMenna, F.J. And Jones, a.M. (2009). Influence of repeated sprint training on pulmonary O2 uptake and muscle deoxygenation kinetics in humans. School of Sport and Health Sciences, University of Exeter, Exeter, Devon, United Kingdom.
Hannukainen, J., Nuutila, P., Ronald, B., Kaprio, J., Kujala, U.M., Janatuinen, T., Heinonen, O.J., Kapanen, J., Viljanen, T., Haaparanta, M., Ronnemaa, T., Parkkola, R., Knuuti, J. And Kalliokoski, K.K. (2007). Increased physical activity decreases hepatic free fatty acid uptake: a study in human monozygotic twins. The Physiological Society.
Hochli D, Schneiter T, Ferretti G, Howald H, Classen H, Moia C, Atchou G, Belleri M, Veicsteinas a, Hoppeler H (1995) Loss of oxidative capacity after an extreme endurance run: The Paris-Dakar Foot-race. International Journal of Sports Medicine 16:343-6.
Jones, a.M., Wilkerson, D.P., Berger, N.J. And Fulford, J. (2007). Influence of endurance training on muscle [PCr] kinetics during high-intensity exercise. School of Sport and Health Sciences, St. Luke's Campus, University of Exeter, Exeter, United Kingdom.
Klein, S., Coyle, E.F. And Wolfe, R.R. (1994). Fat metabolism during low-intensity exercise in endurance-trained and untrained men. Department of Internal Medicine, University of Texas Medical Branch. American Physiological Society. AJP - Endocrinology and Metabolism, Vol 267, Issue 6
Loat CER, Rhodes EC (1993) Relationship between the lactate and ventilatory thresholds during prolonged exercise. Sports Medicine 15:104-15.
McArdle WD, Katch FI, and Katch VL (1996a) Dynamics of pulmonary ventilation. In Exercise Physiology. Energy, Nutrition, and Human Performance. (4th ed). Baltimore: Williams and Wilkins, pp 248-265.
McArdle WD, Katch FI, and Katch VL (1996b) Fuctional capacity of the cardiovascular system. In Exercise Physiology. Energy, Nutrition, and Human Performance. (4th ed). Baltimore: Williams and Wilkins, pp 298-312.
McArdle WD, Katch FI, and Katch VL (1996c) Energy expenditure during walking, jogging, running, and swimming. In Exercise Physiology. Energy, Nutrition, and Human Performance. (4th ed). Baltimore: Williams and Wilkins, pp 168-186.
Morgan DW (1992) Economy of running: A multidisciplinary perspective symposium. Medicine and Science…[continue]
"Endurance Training On Muscle Fat" (2009, September 19) Retrieved December 10, 2016, from http://www.paperdue.com/essay/endurance-training-on-muscle-fat-19322
"Endurance Training On Muscle Fat" 19 September 2009. Web.10 December. 2016. <http://www.paperdue.com/essay/endurance-training-on-muscle-fat-19322>
"Endurance Training On Muscle Fat", 19 September 2009, Accessed.10 December. 2016, http://www.paperdue.com/essay/endurance-training-on-muscle-fat-19322
Physiological Effects of Endurance Training Endurance training produces many physiological changes, both during training and after the training period is complete. These changes are biochemical and also involve changes in the cardio-pulmonary system. The correct way to perform endurance training has been a subject of controversy in recent years. There are many differences in training methods. These differences and the effects of endurance training will be the subject of this research.
Among the criteria that should be evaluated in any progressive training program must include the duration and intensity of exercise and they types of exercise to be used (Browder and Darby, 1998). Guidelines for the program with time might include utilization of short-term or high intensity exercises interspersed with lower intensity and longer duration exercises (Browder & Darby, 1998). This suggests alternating strength-training events with cardiovascular endurance activities to maximize
(MRN, 1) This is to indicate that brain cells are more actively produced by physical activity, convincing neurological theorists that regular athletic orientation will improve one's academic capacity and intellectual clarity. Still, as with other beneficial aspects of an athlete's physical and intellectual growth, sporting activity must be pursued in at least some degree of moderation. For both the implications of what Metzl refers to as overuse and the consequences of an overly centralized focus on
consumption of a carbohydrate performance drink increase 400m sprint times? Carbohydrate loading was found to be beneficial for endurance sports in the late 1990s. Research has demonstrated that consuming high amounts of carbohydrates, combined with low training levels for several days before an event can help to improve performance (Wade, 2008). Since that time, issues have arisen as to which types of carbohydrates are best, which proteins are a factor,
Proteins are often called the building blocks of life. In fact, the very word "protein" implies their importance in the body: it is a Greek word meaning "first place." Approximately fifty percent of the dry weight in animal cells is comprised of protein (Campbell 71). They play a roll in almost everything the body does and "are used for support, storage, transport of other substances, signaling from one part of
Columbia Encyclopedia, testosterone is the principal androgen, or male sex hormone. Although it is a male sex hormone, it is also produced in a small amount in women. Testosterone is necessary in the fetus for the development of male external genitalia. The levels of testosterone increase at the time of puberty; therefore, contributing to the further growth of male genitalia, and for the development and maintenance of male secondary
For obese individuals on the Atkins diet, a moderate exercise program that allows the body to burn fat rather than glycogen can be beneficial, since they would be able to exercise longer. For trained athletes, a higher level of exercise at a longer duration is possible, since the body's threshold for the change to using glycogen as ATP is higher. Thus, our results that obese individuals on that Atkins diet