서킷트레이닝과 생활습관개선프로그램이 직장인의 대사증후군 예방 및 신체기능에 미치는 영향
The Effect of Circuit Training and Workplace Improvement Program on the Prevention of Metabolic Syndrome and the Improvement of Physical Function in Office Workers
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연구배경: 본 연구는 직장인 환경개선을 통한 대사증후군예방/관리 전략 개발로 10주간의 고강도 서킷트레이닝 및직장환경개선 프로그램이 신체조성 및 체력변화 그리고 대사증후군 지표개선에 미치는 영향을 알아보고자 한다. 방법: 대사증후군 고위험군으로 분류된 83명을 대상으로10주간 주 2회 30분씩 고강도 서킷트레이닝과 주 5회 하루2회 다이나믹스트레칭을 실시하였으며 운동 중재 전·후 측정 변인으로 신체구성 및 계측, 혈액변인, 심폐지구력 그리고 악력과 하지근력 및 근지구력검사를 실시하였다. 결과: 신체구성의 변화로는 세 집단 모두 시기 간 체중(각각 P=0.020, P=0.006, P=0.009), 체질량지수(각각P=0.022, P=0.004, P=0.009), 내장지방(각각 P=0.001, P=0.001, P=0.001), 허리둘레(각각 P=0.001, P=0.001, P<0.001), 엉덩이둘레(각각 P=0.001, P=0.007, P=0.001), 제지방량(각각 P<0.001, P=0.001, P=0.001)과 체지방률(각각P<0.001, P=0.001, P=0.001)에서 유의한 차이가 나타났으며, 수축기와 이완기혈압(각각 P=0.025, P=0.003)은 한 집단에서만 유의한 차이를 나타냈다. 혈액변인으로 당화혈색소(각각 P=0.001, P=0.009, P=0.035)는 세 집단 모두 유의한차이를 나타냈으며, 고밀도지단백 콜레스테롤(P=0.007)는한 집단에서만 유의한 차이를 보였다. 근력과 근지구력의변화로는 60°/sec knee extensor/flexor peak torque(각각P=0.006, P=0.047; P=0.023, P=0.040; P=0.025, P=0.009)와average power(각각 P=0.006, P=0.016; P=0.004, P=0.009; P=0.011, P=0.014), 240°/sec knee extensor/flexor average torque(각각 P=0.016, P=0.033; P=0.025, P=0.006; P<0.001, P=0.001)는 세 집단 모두에서 통계적으로 유의한 차이를나타냈으며, total work done(각각 P=0.001, P=0.013; P<0.001, P=0.002)은 두 집단에서만 통계적으로 유의한 차이를 나타냈다. 또한 심폐능력의 변화로 최대산소섭취량(각각 P<0.001, P=0.001, P=0.002)와 total running time(각각 P=0.001, P=0.004, P=0.017)은 세 집단에서 모두 통계적으로 유의한 차이를 나타냈으며, LT (P=0.046)는 한 집단에서만 통계적으로 유의한 차이를 나타냈다. 결론: 10주간의 단시간 고강도 서킷트레이닝과 직장환경개선프로그램이 신체조성과 혈중 지질대사, 근력 및 근지구력과 심폐기능이 향상되는데 효과가 있음을 확인하였다. 따라서 본 연구의 결과를 토대로 본 프로그램의 보급 및확산과 더불어 직장인을 대상으로 대사증후군 개선에 대한연구의 근거가 될 수 있음을 제시한다.
Abstract
Background: Physical inactivity and reduced energy expenditure lead to increase in obesity among office workers. In this study, we investigated how 10 weeks of high intensity circuit training and working environment improvement can change body composition, physical strength and markers of metabolic syndrome. Methods: A total of 83 employees at risk for metabolic syndrome participated in 10 weeks program of one-hour circuit training (30 minutes twice weekly) and workplace improvement program, which consisted of dynamic stretching twice daily for all weekdays. Body composition, anthropometry, blood test, muscle strength/endurance and cardiopulmonary function of participants were assessed at the baseline and after 10 weeks. Results: At the end of 10 weeks, significant increases in levels of body composition, serum lipids, muscle strength and cardiopulmonary were observed in metabolic syndrome risk factor group. In body composition, significant improvements of body weight, body mass index, lean body mass, %body fat, visceral adipose tissue, waist and hip circumference and systolic blood pressure, diastolic blood pressure were observed in metabolic syndrome risk factor group. In lipids, hemoglobin A1c and high density lipoprotein were increased significantly in metabolic syndrome risk factor group. In muscle strength and endurance, significant increases were found. Also, there was a significant difference in cardiovascular function of maximal oxygen uptake and total running time among the groups. Conclusions: These intensive 10 weeks of high intensity circuit training and workplace improvement program were effective in improving body composition, muscle strength/improvement and cardiopulmonary function. Therefore, based on this study result, workplace improvement programs might be more developed and applied for high-risk employees to improve their metabolic syndrome.
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