Exercise Physiology Laboratory - Assignment Example

The above-mentioned recommendations are on the basis of skills and body structure required for a particular sport. "Mesomorphs rank high on strength, endurance, and agility and therefore is best suited for the above-mentioned sports." (Sports Potential, Measurement Description, Overview)5. AFFECT OF HYDRATION LEVEL ON DXA, BIA, AND SKINFOLD A. Hydration Level and DXA Test: Ideally with a decrease in hydration there should be an increase in element content (like Na, K, Cl) leading to a higher molecular weight of the body and thus change in attenuation coefficient.

In the study done by Going and colleagues, it was found that 98% of weight change due to dehydration was measured by DXA. (Human Body Composition, By Steven Heymsfield, Pg 75) A normal variation in hydration level (1-3 %of body weight). In the study done by Going and colleagues, it was found that 98% of weight change due to dehydration was measured by DXA. (Human Body Composition, By Steven Heymsfield, Pg 75) A normal variation in hydration level (1-3 %of body weight) has very little effect on measurement by DXA method.

Variation in Hydration level blazes DXA estimates of percentage fat only 1-2.5 %. This interprets that Hydration Level doesn't have much effect on DXA measurement. B. Hydration Level and BIA Test: "In an experiment done, with the decrease in Hydration level, Bioelectric Impedance (BI) decreased from 14.4 5.3% to 12.3 5.3%, After Rehydration, BI % increased to 15.5 5.8%. Similar findings occurred when subjects were super hydrated (Normal-BI = 13.2 5.3%; Super hydration -BI = 15.4 5.6%)." (SAUNDERS. J. (1); BLEVINS. E. (1); BREEDERS. E. (1) ) B.

Hydration Level and SKINFOLD: With the increased level of water in the body, the Value in the Skinfold test increases. High extracellular water in subcutaneous tissues causes the thickness of and hence the value calculated is incorrect.“Martin, Drink water and Clays(1992) reported that variation in skinfold compressibility may be an important limitation of this method. The addition of water in subcutaneous tissue caused by factors like peripheral vasodilatation may increase skinfold thickness.

This suggests that Skinfold measurements should not be taken just after exercise, especially in a hot environment.”Advanced Fitness Assessment and Exercise Prescription by Vivian H. Heyward