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12주간의 순환운동과 L-tryptophan 섭취가 폐경 여성의 체력과 대사증후군에 미치는 영향

Effects of 12 weeks of circuit training and L-tryptophan supplementation on physical fitness and metabolic syndrome in menopausal women

이태희|이만균|조현석
국민체육진흥공단 한국스포츠과학원 (Korea Institute of Sport Science)|2020.09|체육과학연구 (Korean Journal of Sport Science)|제31권 제3호|pp. 393-409|DOI 10.24985/kjss.2020.31.3.393

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참고문헌

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대사증후군metabolic syndrome폐경physical fitnessmenopause체력순환운동circuit training트립토판L-tryptophan
주제분류체육

초록

[목적] 이 연구는 12주간의 순환운동과 L-tryptophan 섭취가 페경 여성의 체력과 대사증후군에 미치는 영향을 규명하는 것이었다. [방법] 정상 체중 이상의 폐경 여성 41명을 순환운동+L-tryptophan 집단 14명, L-tryptophan 집단 14명, 그리고 통제 집단 13명으로 무선할당 하였다. 순환운동+L-tryptophan 집단의 대상자는 12주간 주 3회, 일일 40분의 순환운동에 참여하고 일일 3 g의 L-tryptophan을 섭취하였으며, L-tryptophan 집단의 대상자는 일일 3 g의 L-tryptophan을 섭취하였다. 통제 집단의 대상자는 동일한 처치 기간 동안 위약을 섭취하면서 특별한 처치 없이 평소의 생활습관을 그대로 유지하였다. 체력과 대사증후군관련 변인을 사전검사와 사후검사에 측정하였고, 반복 이원분산분석을 이용하여 세 집단 간에, 그리고 두 검사 간에 비교하였다. [결과] 이 연구에서 얻은 주요 결과는 다음과 같다. 1) 체력과 관련하여 순환운동+L-tryptophan 집단의 제자리멀리뛰기, 눈감고외발서기, 앉아윗몸앞으로굽히기, 윗몸일으키기, 그리고 maximal oxygen uptake가 유의하게 증가되었다. 2) 신체구성과 관련하여 순환운동+L-tryptophan 집단의 체중, 체질량지수, 허리둘레, 허리·엉덩이둘레 비율, 체지방량, 그리고 체지방률이 유의하게 감소되었다. 3) 혈중 지질과 관련하여 순환운동+L-tryptophan 집단의 총콜레스테롤이 유의하게 감소되었다. 4) 인슐린 저항성 지표와 관련하여 순환운동+L-tryptophan 집단의 공복 혈당, 공복 인슐린, 그리고 homeostasis model of assessment for insulin resistance(HOMA-IR)가 유의하게 감소되었으며, L-tryptophan 집단의 공복 혈당과 HOMA-IR이 유의하게 감소되었다. 5) 심박수 및 혈압과 관련하여 순환운동+L-tryptophan 집단의 수축기 혈압, 이완기 혈압, 평균동맥압, 그리고 rate pressure product(RPP)가 유의하게 감소되었고, L-tryptophan 집단의 이완기 혈압과 평균동맥압이 유의하게 감소되었다. 6) 순환운동+L-tryptophan 집단과 L-tryptophan 집단의 대사증후군 위험요인의 수가 유의하게 감소되었다. [결론] 이상의 결과를 토대로 볼 때, 12주간의 순환운동과 L-tryptophan 섭취의 복합 처치는 체력의 향상에 효과적이었고, 신체구성, 인슐린 저항성, 그리고 혈압의 개선을 통하여 대사증후군 위험요인의 수를 줄이는데 효과적이었다. 아울러 L-tryptophan 단독 섭취도 인슐린 저항성과 혈압의 개선을 통하여 대사증후군 위험요인의 수를 줄이는데 효과적이었다고 결론지을 수 있다. 향후 대사증후군 질환자를 대상으로 운동 트레이닝과 L-tryptophan 섭취의 단독 처치 및 복합 처치의 효과를 보다 장기간에 걸쳐 규명하는 후속 연구가 요청된다.

Abstract

[Purpose] The study was designed to investigate the effects of 12 weeks of circuit training and L-tryptophan supplementation on physical fitness and metabolic syndrome. [Methods] Forty-one menopausal women were randomly assigned to one of three groups. i.e., combined circuit training and L-tryptophan supplementation group (CT+T: n=14), L-tryptophan supplementation group (T: n=14), and control group (CON: n=13). The subjects in CT+T exercised three sessions per week and took 3g of L-tryptophan per day for 12 weeks. The subjects in T took 3g of L-tryptophan per day for 12 weeks. The subjects in CON were asked to maintain their life pattern for the same period of intervention. Physical fitness and metabolic syndrome-related variables were measured at pre- and post-test. The data were compared by utilizing a repeated two-way ANOVA. [Results] Main results of the study were as follows: 1) Standing long jump, one leg standing with eyes closed, sit-and-reach, sit-up, and maximal oxygen uptake increased significantly in CT+T. 2) Body weight, body mass index, waist circumference, waist-hip ratio, fat mass, and percent body fat decreased significantly in CT+T. 3) Total cholesterol decreased significantly in CT+T. 4) Fasting plasma glucose (FPG), fasting plasma insulin, and HOMA-IR decreased significantly in CT+T. FPG and HOMA-IR decreased significantly in T. 5) Systolic blood pressure, diastolic blood pressure (DBP), mean arterial pressure (MAP), and rate pressure product decreased significantly in CT+T. DBP and MAP decreased significantly in T. 6) Number of metabolic syndrome risk factors decreased significantly in CT+T and T. [Conclusion] It was concluded that the circuit training and L-tryptophan supplementation would have positive effects on physical fitness and metabolic syndrome, and that L-Tryptophan supplementation would have positive effects on metabolic syndrome by improving insulin resistance and hypertension in menopausal women.

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