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중탄산나트륨 섭취가 점증부하운동시 대사변인 및 운동시속시간에 미치는 영향
강덕모(Knag Duk-Mo),이용수(Lee Young-Soo),박석(Park Sok),하민수(Ha Min-Soo) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.4
This study when to examine the effects of sodium bicarbonate ingestion on metabolicl variables when people are at easy, when they finished the exercise and when they are recovered. The effect on exercise duration during graded exercise was examined as well. Eight male undergraduate students from Department of Physical Education participated in this study as subject. For this purpose, placebo and NaHCO3 treatment, independent variables, were assigned to the controlling group and the experimental group each. Then physiological variables and the exercise continuer time, dependent variables, were analyzed. Through the experiment and statistical methodology, results were found as follow: First, VO2 has no significant difference between controlling and experimental group. However, in both groups, there was significant difference in VO2 according to the participants' status; whether they were at ease, finished the exercise and was resting. Especially in the experimental group, there were differences in VO2 when they finished the exercise and when they were in the status of recovery at an interval of every five minutes from 5 to 15. RER in the experimental group were significantly high when they just finished the exercise and when they were in 5, 10, and 15 minutes of recovery compare to the controlling group. RER were different from every time when measured except when 15 minute have passed since the recovery in controlling group and when 15 minute have passed in experimental group. There were significant differences in the concentration of lactic acid between the two groups. For example, in experimental group, Lactic Acid was low when the subjects were at ease and after 3, 5 and 10 minutes' of resting. In addition, when compared to the status of ease, there were significant differences in the concentration of Lactic Acid after the exercise and 3, 5 and 10 minutes' of recovery. Second,, it is revealed that VO₂max has no significant differences between the two groups. However, it was measured slightly higher in experimental group (58.45㎖/min/㎏) than controlling group (57.36 ㎖/min/㎏). VT level has no significant difference between the two groups. However, it was measured somewhat higher in experimental group (47.1387㎖ /min/kg) than controlling group (41.9250㎖/min/㎏). Exercise duration was significantly different from the two groups. From VT to the end of the exercise, the duration of exercise was 209 seconds (3 minutes and 29 seconds) in experimental group, whereas it was 190 seconds (3 minutes and 10 seconds)in controlling group, which means there was 19 seconds of difference between the two groups. To sum, VO₂ and VT were measured somewhat higher in experimental group compare to controlling group; however, they were not significant. In the matter of RER, it was measured significantly higher in experimental group, while the concentration of Lactic Acid was measured significantly low in experimental group compare to controlling group. In addition, exercise duration was longer in experimental group than controlling group. These results verify that, during the graded exercise, NaHCO3 causes the increase of NaHCO3, and it strengthens the ability of shock-absorbing. On the ground of this research, the future study should be improved in the matters of the subject number, systematic design for the experiment and diverse treatments of variables in order to reveal the effects of NaHCO3 in graded exercise clearly.
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