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8주간의 순환운동이 버스 운전기사의 혈중 지질, 인슐린 저항성, 심혈관기능 및 대사증후군 위험요인에 미치는 영향

Effects of 8 weeks of circuit training on blood lipids, insulin resistance, cardiovascular function, and metabolic syndrome risk factors in bus drivers

조현석|이만균|임은철
국민체육진흥공단 한국스포츠과학원 (Korea Institute of Sport Science)|2017.03|체육과학연구 (Korean Journal of Sport Science)|제28권 제1호|pp. 11-25|DOI 10.24985/kjss.2017.28.1.11

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대사증후군metabolic syndrome혈중 지질cardiovascular functionblood lipidsinsulin resistance인슐린 저항성순환운동bus driver심혈관기능버스 운전기사ircuit training
주제분류체육

초록

[목적] 이 연구에서는 8주간의 순환운동이 버스 운전기사의 혈중 지질, 인슐린 저항성, 심혈관기능, 그리고 대사증후군 위험요인에 미치는 영향을 규명하고자 하였다. [방법] 40~50대의 남성 버스 운전기사 29명이 이 연구의 대상자로서 참여하였으며, 운동집단 14명과 통제집단 15명으로 구성되었다. 운동집단의 대상자는 8주간의 처치기간 동안 주 3회, 1회당 30~40분간 순환운동을 실시한 반면, 통제집단의 대상자는 동일한 기간 동안 평소의 생활습관을 연구 참여 전과 동일하게 유지하도록 하였다. [결과] 이 연구에서 얻은 주요 연구결과는 다음과 같다. 1) 신체구성의 경우 운동집단의 허리둘레, 엉덩이둘레, 허리·엉덩이둘레비, 체질량지수, 그리고 체지방률이 유의하게 감소되었다. 2) 혈중 지질의 경우 운동집단의 LDL-C가 유의하게 감소되고 HDL-C가 유의하게 증가되었다. 3) 인슐린 저항성관련 변인의 경우 운동집단의 공복혈당과 HOMA-IR이 유의하게 감소되었다. 4) 심혈관기능과 관련하여 이완기혈압과 평균동맥압이 운동집단과 통제집단 모두에서 유의하게 감소되었다. hs-CRP는 운동집단에서 감소되는 경향을 보였다. 5) 대사증후군 위험요인의 수가 운동집단에서 유의하게 감소되었다. [결론] 이상의 결과를 종합해 보면, 8주간 실시한 순환운동이 중년 남성 버스 운전기사의 허리둘레, 혈중지질, 그리고 인슐린 저항성에 긍정적인 영향을 미쳐 대사증후군 위험요인의 수를 감소시켰다고 결론지을 수 있다. 특히, 대사증후군 위험요인의 수가 대사증후군 진단기준에 가까운 2.86±0.86개에서 불과 8주간의 순환운동을 통하여 완전 정상범위인 1.50±0.76개로 급감하였다는 것은 단순히 통계적으로 유의한 변화를 넘어서 임상적으로도 큰 의미를 갖는다고 판단된다. 따라서 규칙적으로 실시하는 운동이 버스 운전기사의 대사증후군 예방과 치료에 공헌할 수 있을 것이라 판단된다. 이와 같은 연구의 결과를 토대로, 장시간 운행과 강제적인 좌식생활로 인하여 건강에 위협을 받는 버스 운전기사의 건강 증진과 복지를 위하여 다양하고 현실적인 운동 프로그램을 개발하고 그 효과를 검증하는 후속 연구가 요청된다.

Abstract

[Purpose] This study was designed to examine the effects of 8 weeks of circuit exercise training on blood lipids, insulin resistance, cardiovascular function, and metabolic syndrome risk factors in 40~50s male bus drivers. [Methods] Twenty-nine bus drivers were randomly assigned to one of two groups, i.e., circuit exercise training group (TR: n=14) and control group (CON: n=15). Subjects in TR participated in circuit exercise training 30-40 min per session, three sessions per week for 8 weeks, whereas subjects in CON were asked to maintain their normal life pattern for same intervention period. The variables regarding body composition, blood lipids, insulin resistance, cardiovascular function, and number of metabolic syndrome risk factors were measured and compared between two groups as well as between pre- and post-test. Data were analyzed using repeated two-way ANOVA with post hoc test. [Results] Main results of the present study were as follows: 1) Waist circumference, waist-hip ratio, body mass index, and percent body fat decreased significantly in TR. 2) LDL-C decreased and HDL-C increased significantly in TR. 3) Fasting plasma insulin and HOMA-IR decreased significantly in TR. 4) Regarding cardiovascular function, diastolic blood pressure and mean arterial pressure decreased significantly in both TR and CON. hs-CRP were not changed significantly; however, it tended to be decreased TR. 5) Number of metabolic syndrome risk factors decreased significantly in TR(2.86±0.86 to 1.50±0.76). [Conclusions] It was concluded that 8 weeks of circuit exercise training would be beneficial for improvement of blood lipid profiles and insulin resistance, resulting in preventing metabolic syndrome. In particular, it would be very clinically meaningful that number of metabolic syndrome risk factors decreased from 2.86±0.86 to 1.50±0.76 by the circuit exercise training.

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