훈련방법의 차이가 흰쥐의 혈액성분과 랩틴농도에 미치는 영향

Abstract

본 연구는 비슷한 강도의 규칙적인 수영과 트레드밀 훈련이 흰쥐의 체중, 지방량, 혈중 triglyceride, insulin, 및 랩틴 호르몬 변화에 미치는 영향을 살펴보고 운동이 비만에 미치는 영향을 과학적으로 분석하고자 하였다. 본 연구의 결과로 규칙적인 훈련은 체중과 지방량을 감소시킬 뿐만이 아니라 혈중 triglyceride, insulin, 및 랩틴 호르몬을 감소시킴으로 비만 예방에 큰 효과가 있는 것으로 알려졌으며, 같은 기간의 비슷한 강도의 운동에서 수영 훈련 보다는 트레드밀 위에서 달리는 운동이 비만 예방에 더 큰 효과가 있는 것으로 나타났다. 추후 서로 다른 운동을 부여하여 운동생리학적인 변화를 비교할 뿐만이 아니라 이러한 원인을 규명하는 기전적인 연구가 진행되어져야 한다고 본다. The purpose of this study is to evaluate the different type of exercise training on the changes of blood variables and leptin in SD rats. For this study, SD rats were divided into three groups: control group (CG: n=10), swim trained group (SG: n=10), and treadmill trained group (TG: n=10). The animals were housed in a pathogen-free animal facility (<TEX>$22-24^{\circ}C$</TEX>, 50-60% relative humidity, 08:00-20:00 lighting hours) at D university animal center, Pusan, Korea). Food and water were available ad libitum. The trained rats underwent a 8-wk endurance swim training (5 times/wk) in water at <TEX>$26-29^{\circ}C$</TEX> (SG) and treadmill training (5 times/wk) in DAEJONG treadmill for 60 min. All data were expressed as mean and standard deviation by using SPSS package program (ver 10.0). The result through the statistical analysis of this data were summarized as follows: 1. In the weight changes, there were significant differences among CG, SG and TG(p<.05) after regular swim and treadmill training. TG showed the lowest weight than the other groups. 2. In the epididymal & perirenal adipose tissue levels, there were significant differences among CG, SG and TG(p<.05) after regular swim and treadmill training. TG showed the lowest adipose tissue levels than the other groups. 3. In the triglyceride changes, For the SG and TG, there were significantly decreased after regular swim and treadmill training. TG showed the lowest triglyceride levels than the other groups. 4. In the insulin hormone, For the SG and TG, there were significantly decreased after regular swim and treadmill training. TG showed the lowest insulin levels than the other groups. 5. In the leptin changes, For the SG and TG, there were significantly decreased after regular swim and treadmill training. TG was the lowest than the other groups. Based on the results, Regular swim and treadmill training decrease body weight, epididymal & perirenal adipose tissue levels significantly, this is caused but by decreased triglycerides, insulin, and leptin hormone levels not by the other factors. Regular treadmill training decreased insulin hormone levels compare to swim training, however there was no direct insulin effect on the weight changes. and it might be the direct effect of leptin hormones.