Nutritional Status and Blood Profile Changes of Body Builders after Competition

Journal of Exercise Nutrition & Biochemistry 1997;1(2):67-76.

Abstract

This study was designed to investigate nutritional status and hematological profiles of college-aged body builders after competition. Mean daily energy intake was 2,149 ㎉(86.0% of korean RDA) before competition and was increased to 3,153 ㎉(126.1% of korean RDA) after competition. Mean carbohydrate, lipid, and protein intakes were 307.5g, 58.9g, and 97.3g, respectively, at pre-competition period and were 382.9g, 109.8g, and 152.7g, respectively, at post-competition period. Changes in body weight and body fat % were followed by increase in energy intake after competition. Mean body weight was significantly increased from 78.1 + 4.0 ㎏(+0 wk) to 82.5 + 5.5 ㎏(+5 wk), and body fat percent was increased from 9.1 + 0.6 %(0 wk) to 12.7 + 0.9 %(+5 wk) after competition. Mean dietary iron intake was over the korean recommended daily allowances throughout the experimental period. It was reflected at blood iron status, and hematocrit and blood hemoglobin values were not significantly changed by time. HDL-cholesterol concentration of body builders was below normal range(30-70㎎/dl) thoughout the experimental period. Meanwhile, serum albumin level was significantly increased after competition(4.76 + 0.07g/dl vs. 5.22 + 0.12g/dl), reflecting increase in protein intake during post-competition period. Even though energy and dietary lipid intakes were increased, serum lipid profiles were not significantly increased by time. It may be due to beneficial, fat-burning effect of regular training, regardless of competition.