Dietary composition and Hydration status of the Athlete

摘要

High protein intake has been the mainstay of the most athletes' diet. Strength athletes and bodybuilders in particular consume large amounts of protein. (Kleiner S. M., 1994.). The observation that a protein intake of approximately 4 times the RDA, in combination with weight training can promote greater muscle size is in tune with what many bodybuilders believe. Present study has given three different dietary protocols for three day period each with basal, high protein and high CHO diet containing 15.3, 38.6 and 12% protein respectively. The results shows that short term exposure to high protein produce large production of urea, the Urea clearance ( shows that kidney is working within its normal limits but may be kidney is not geared to eliminate sudden influx of urea and therefore higher plasma urea retains higher amount of water. Potential Renal Protein Load for high protein diet was calculated to be 2.5 times as compared to basal and thrice as compared to high carbohydrate diet, indicating the probable detrimental effect of long term high protein diet. To clear off all the extra load, fluid deficit has been calculated as 2.5 times more for high protein diet and 2.85 times for high CHO diet as compare to basal diet. Here although protein load is less in high CHO diet but fluid deficit is higher may be because high CHO diet contains 6.64g of CHO /kg body wt as compare to 3.6gm of protein/kg body wt, resulting higher blood osmolality in high CHO diet resulting higher deficit.