Articles : The Effects on Exercise Performance and on Blood Ammonia and Lactate Concentrations after 2000M Rowing Performance of Vitamin Supplementation and Training in Rowers

Journal of Exercise Nutrition & Biochemistry 2004;8(3):339-346.

Abstract

The purpose of the present investigation was to evaluate the effects of 6 weeks vitamin C·B complex intake on exercise performance and blood fatigue factors during high-intensity rowing training in male university rowers, with the expectation that exercise performance would be improved by a combination of vitamin C and B complex feeding. A total of 11 male rower were recruited for this study. The subjects were randomly and evenly divided into a supplemented group(SG) and a control group (CG). The supplementation consisted of capsules containing 2,400 mg of vitamin C-13 complex. Venous blood samples (5cc) were obtained pre-exercise, post-exercise and recovery 30 min with vitamin complex supplementation for 6 weeks. Exercise performance test was performed on 2000 M Single Skull event by Concept II Indoor Rowing Ergometer, and each subject performed 6 hours (AM 3 hours ＆ PM 3 hours/day, 6 days/ wk, 6 weeks) rowing training program in sports complex and rowing fields. Exercise performance after 6 weeks vitamin C·B complex intake of supplemented group was fasted significantly in 2000 M rowing ergometer test (p＜.05), but there were no significant change of all periods in control group. In blood fatigue factors with 2000 M rowing ergometer test after vitamin C·B complex supplementation in rowers for 6 weeks, the concentration of blood ammonia were significantly different (p＜.001) with periods (pre-exercise, post-exercise and recovery 30 mn.) in both groups, but not significantly different between supplemented group and control group. In blood fatigue factors with 2000 M rowing ergometer test after vitamin C·B complex supplementation in rowers for 6 weeks, the concentration of blood lactate were significantly different (p＜.001) with periods (pre-exercise, post-exercise and recovery 30 min.) in both groups, but not significantly different between supplemented group and control group.

Key Words: vitamin C,B complex, rowing performance, blood ammonia, Lactate concentration