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밥 식이와 빵 식이가 지구성 운동 후 혈중 중성지방, 인슐린 및 그렐린에 미치는 영향

Effects of Rice Diet and Bread Diet on Plasma Triglyceride, Insulin and Ghrelin Level after Endurance Exercise

  • 투고 : 2012.03.26
  • 심사 : 2012.06.18
  • 발행 : 2012.08.31

초록

본 연구는 밥 식이와 빵 식이가 지구성 운동 후 중성지방, 그렐린, 인슐린, 혈당, 유리지방산, 지방과 탄수화물 산화율을 조사하여 두 식이의 차이점을 분석하였다. 중성지방은 지구성 운동 시 두 식이 간에 유의한 차이는 나타나지 않았으며 운동 후 회복기에서 중성지방은 밥 식이가 빵 식이보다 유의하게 감소하였다. 인슐린과 혈당에서도 밥 식이는 빵 식이보다 유의하게 감소된 결과를 나타냈다. 밥 식이와 빵 식이의 유리지방산과 지방 산화율은 운동과 운동 후 회복기에서 통계적 유의한 차이는 나타나지 않았지만 밥 식이가 빵 식이보다 다소 높은 경향을 나타내었다. 운동을 병행한 두 식이 간 비교에서 밥 식이가 중성지방 감소, 낮은 혈당 반응, 인슐린 민감성 향상의 결과가 나타났다. 이상의 결과를 종합할 때 일회성 운동이지만 서구의 주식인 빵 식이보다 우리의 주식인 밥 식이의 섭취가 운동과 병행하였을 경우 심혈관질환 예방 효과의 가능성을 볼 수 있었다.

In this study, the effects of a rice diet and bread diet on plasma triglyceride, insulin and ghrelin levels during low-intensity endurance exercise and recovery were investigated. Ten male students randomly received 2 different treatments: the rice diet and bread diet. On the first day, the participants performed 2 hours of treadmill running with 6% uphill at 50% $VO_{2max}$ after breakfast and then each consumed lunch and dinner. Blood samples were drawn 120 min before exercise and, right before exercise and, 60 min and 120 min after the start of exercise. On the second day, blood samples were drawn prior to breakfast, immediately after breakfast and, 60 min, 120 min, and 180 min after breakfast with no exercise treatment. Plasma triglyceride, ghrelin, glucose, and insulin levels were not significantly different between the two treatment groups on the first day. In addition, there was no difference in the carbohydrate and fat oxidation rate between the two treatments groups. However, plasma triglyceride levels in subjects that received the rice diet were significantly reduced by 14% when compared to subjects that received the bread diet at 180 min after consuming the breakfast diet on the second day. Ghrelin levels were significantly higher for subjects that received the rice diet than subjects that were given the bread diet. However, insulin in participants that consumed the rice diet was significantly lower than those that received the bread diet at 60 min and 120 min after consumption of the breakfast diet on the second day. Glucose levels in the subjects that were given the rice diet were significantly reduced by 10.3% when compared with participants that received the bread diet at 60 min. Therefore, the results of the study showed that a rice diet may be more effective in preventing cardiovascular diseases than a bread diet when combined with exercise.

키워드

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