Endurance Training On Muscle Fat Research Proposal

Length: 8 pages Sources: 35 Subject: Sports Type: Research Proposal Paper: #17020440 Related Topics: Exercise Physiology, Athletic Training, Sports Medicine, Exercise Science
Excerpt from Research Proposal :



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
References

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…

Sources Used in Documents:

References

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.


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