| Abstrakt: |
The aim of this study was to determine the effect of essence of chicken (EOC) supplementation on physiological changes and cycling performance. Nine trained male cyclists (age: 24.8 ± 4.4 years) participated in a randomised double blind, placebo controlled, cross-over study. Subjects ingested 2 bottles (112g) of EOC or a placebo (P) per day for 7 consecutive days and on the 8th day the subjects were asked to perform a cycling time trial performance on an ergometer. There was a two-week wash out period between the two trials. Blood samples were obtained via an indwelling cannula in the antecubital vein at rest and during exercise. There were no significant differences in the time to complete the given amount of work between EOC and P trials (69.1 ± 2.4 min vs 70.2±2.5 min, p>0.05). There was also no significant difference in the average pedaling power output between EOC and P trials (187.1±6.3W vs 183.7±6.4W, p>0.05). No significant differences in average heart rate were noted between the trials (162 ±2 beat·min-1 vs 160±2 beat·min-1, p>0.05). Rectal and skin surface temperatures increased significantly during exercise but there were no differences between the two trials. There were no significant changes in plasma sodium, grucose, and urea, but there was a significant increase in plasma lactate, ammonia and potassium concentrations, including hemoglobin, packed cell volume and percentage of plasma changes during cycling in both trials. The results showed that daily supplementation of two bottles (112g) of essence of chicken for a week did not improve cycling performance. [ABSTRACT FROM AUTHOR] |
