12주간의 유산소운동과 통근수단 전환이 비만 중년 남성의 신체구성과 혈중 지질에 미치는 영향

이소라(Lee, So-Ra),김예영(Kim, Yae-Yeong),정원상(Jung, Won-Sang),이만균(Lee, Man-Gyoon) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.2

The study was designed to investigate the effects of 12 weeks of aerobic exercise and change of commuting mode to public transportation on body composition and blood lipid profiles in middle-aged obese men. Forty subjects, aged 30-50 yrs, whose BMI was higher than 25 kg · m-2, were randomly assigned to one of three groups, i.e., aerobic exercise training group(AT; n=13), change of commuting mode group(CCM; n=14), and control group(CON; n=13). Subjects in the AT participated in aerobic exercise program, peformed at 40-75% of HRR, 15-35 min/session, 3 sessions/wk for 12 weeks, and subjects in the CCM changed the commuting mode from their own vehicle to public transportation 5 day/wk, 10 times/wk for 12 weeks. Subject in the CON were asked to maintain their normal life patterns during the same intervention period. Variables regarding body composition and blood lipid profiles were measured in pre-test and post-test, and the results were compared among three groups and between two tests. Main results of the present study were as follows: l) Walking amount increased significantly in only CCM as treated. 2) Body weight, waist circumference, waist-hip ratio, body mass index, body fat, and fat mass decrease significantly in the AT, while body weight, body mass index, body fat, and fat mass decreased significantly in the CCM (P〈.05), 3) LDL-C decreased significantly in the AT(P〈.01) and the CCM(P〈.05). It was concluded that 12 weeks of change of commuting mode to public transportation as well as aerobic exercise would be beneficial for improving variables regarding body composition and blood lipid profiles. Increment of physical activity by changing to public transportation from their own vehicle would be helpful to prevent obesity and dyslipidemia.

포도씨 추출물 섭취가 경계성 고혈압자의 안정 시와 운동 중 심혈관반응과 혈관내피세포기능에 미치는 영향

전승민(Joen, Seung-Min),김경애(Kim, Kyung-Ae),이만균(Lee, Man-Gyoon) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.2

The aim of this study was to investigate the effects of a 2-week ingestion of grape seed extract(300 mg/day) on cardiovascular response and vascular endothelial cell function at rest and during handgrip exercise in prehypertensive individuals. Nine prehypertensive men, aged 24.6±3.1 yrs, repeatedly participated in both grape seed extract trial and placebo trial in a randomized, double-blind, crossover manner. While the subjects ingested grape seed extract or placebo in a 2-week trial, their cardiovascular response, blood vessel diameter, blood flow volume, and vascular endothelial cell function at rest and during handgrip exercise were measured. Each variable was compared between two trials as well as between two tests simultaneously using a repeated two-way ANOVA. Main result of the present study were as follows: 1) Systolic blood pressure decreased significantly at rest after the 2-week ingestion of grape seed extract. 2) Systolic blood pressure and mean blood pressure decreased significantly during handgrip exercise after the 2-week ingestion of grape seed extract. 3) Flow-mediated dilation volume and % flow-mediated dilation increased significantly after the 2-week ingestion of grape seed extract. It was concluded that 2 weeks of ingestion of grape seed extract would have an positive effect on cardiovascular response and vascular endothelial cell function at rest and during handgrip exercise in prehypertensive men. Future research investigating the effects of various period and amount of ingestion of grape seed extract during aerobic exercise including large muscle group would be warranted.

12주간의 유산소운동과 통근수단 전환이 중년 남성의 체력, 인슐린 저항성, 염증지표 및 간기능에 미치는 영향

허다솜 ( Da Som Heo ),김예영 ( Yae Young Kim ),정원상 ( Won Sang Jung ),이만균 ( Man Gyoon Lee ) 한국스포츠정책과학원(구 한국스포츠개발원) 2015 체육과학연구 Vol.26 No.1

선진 외국에서는 통근수단으로서 자가용 대신 대중교통을 이용함으로써 부가적으로 발생하는 신체활동이 건강수준에 미치는 효과를 밝히는 연구가 활발하게 이루어졌으나 국내의 관련 연구는 미흡한 실정이다. 이 연구의 목적은 12주간의 유산소운동과 대중교통으로의 통근수단 전환이 중년 남성의 체력, 인슐린 저항성, 염증지표 및 간기능에 미치는 영향을 규명하는 것이었다. 이 연구의 대상자는 최근 5년 이상 지속적으로 자가용을 이용해 온 체질량지수 25kg·m-2 이상의 30~50대의 사무직 중년 남성 44명이었다. 이들을 자가용을 계속 이용하면서 유산소운동을 실시한 운동집단(n=14), 자가용 이용을 중단하고 대중교통으로 전환한 전환집단(n=15), 그리고 자가용을 계속 이용하면서 특별한 처치 없이 기존의 생활 패턴을 유지한 통제집단(n=15)에 무선 할당하였다. 운동집단은 주 3회, 일일 30분의 유산소운동을 실시하였고, 전환집단은 통근수단을 대중교통으로 전환하여 주 5회, 일일 최소 20분의 보행을 유도하였다. 처치 전ㆍ후에 체력, 인슐린 저항성, 염증지표, 그리고 간기능과 관련된 변인을 측정한 후 반복 이원변량분석을 이용하여 집단 간, 그리고 검사 간에 비교하였다. 이 연구의 주요 결과는 다음과 같다. 1) 체력과 관련된 모든 변인이 운동집단에서 유의하게 향상되었고, 전환집단의 경우 오른손 악력, 제자리멀리뛰기, 사이드스텝, 그리고 앉아윗몸앞으로굽히기가 유의하게 향상되었다. 2) 인슐린 저항성과 관련된 모든 변인에서 통계적으로 유의한 변화가 나타나지 않았으나, 운동집단과 전환집단에서 개선되는 경향이 나타났다. 3) 염증지표와 관련하여 운동집단과 전환집단에서 TNF-α가 유의하게 감소되었으며, IL-6와 CRP가 개선되는 경향이 나타났다. 4) 간기능과 관련하여 전환집단에서 ALT가 유의하게 감소되었다. 이상의 결과를 종합해 보면, 12주간의 유산소운동이 체력과 염증지표 및 인슐린 저항성의 개선에 효과적인 것으로 나타났다. 아울러 통근수단을 자가용에서 대중교통으로 전환한 것만으로도 유산소운동 못지 않게 체력, 염증지표, 인슐린 저항성, 그리고 간기능에 긍정적인 영향을 미친 것을 알 수 있다. 시간이 부족하여 운동 참여가 줄어드는 현대인에게 있어서 대중교통으로 통근수단을 전환하는 시도는 일상생활에서 자연스럽게 신체활동량을 증가시키고 건강수준을 개선하는 대안이 될 수 있을 것으로 판단된다. This study was designed to investigate the effects of increment of physical activity for 12 weeks through aerobic exercise training or change from own vehicle to public transportation for commuting on physical fitness, insulin resistance, inflammatory markers, and liver function in middle-aged men. Forty-four subjects, aged 30-50 yrs, were randomly assigned to either one of three groups, i.e., aerobic exercise training group (TR: n=14), change to public transportation group (PT: n=15), or control group (CON: n=15). Subjects in TR performed aerobic exercise for 30 min per sessions, three sessions per week, subjects in PT changed from their own vehicle to public transportation for commuting, and subjects in CON maintained their life patterns during the same intervention period. Physical fitness, insulin resistance, inflammatory markers, and liver function were measured at pre- and post-test, and the data were analyzed by repeated two-way ANOVA. Main results of the present study were as follows: 1) All variables related to physical fitness improved significantly in TR. Right grip strength, standing long jump, side step test, and sit-and-reach improved significantly in PT. 2) Although there were no significant changes in all variables related to insulin resistance, the variables tended to be improved in TR and PT. 3) TNF-α decreased significantly in TR and PT. IL-6 and CRP tended to be improved in TR and PT; however, the changes did not reach statistical significant level. 4) ALT decreased significantly in PT. AST and γ-GT tended to be improved in TR and PT; however, the changes did not reach statistical significant level. It was concluded that the 12 weeks of change to public transportation as well as aerobic exercise training would be beneficial for physical fitness and inflammatory markers. These interventions also would be possible to improve insulin resistance and liver function. The increment of physical activity through change from own vehicle to public transportation was found to be equally beneficial for health promotion compared to aerobic exercise.

승무 좌우치기 동작 시 숙련도와 류파에 따른 손목의 각도, 각속도 및 근활성도의 비교 분석

홍경아(Hong Kyung-A),김현숙(Kim Hyun-Sook),이만균(Lee Man-Gyoon) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.2

The purpose of this study was to compare joint angle, angular velocity, and EMG activity of wrist during ‘Joa-u-chigi’ according to skill level and style of ‘Seungmu’. Ten skilled dancers and ten collegiate students majoring in Korean dance participated in the study. Dependent variables were measured and compared according to skill level as well as between skilled dances of both styles. Main results were as follows: 1) No significant difference was found in angular velocity and muscle activity between skilled and unskilled of ‘Mae-Bang Lee’ style. However, the timing of the snap was different according to skill level. 2) Angular velocity and muscle activity was higher in skilled than unskilled of ‘Young-Sook Han’ style. 3) The range of changes in angle of wrist during ‘Joa-u-chigi’ was similar between ‘Mae-Bang Lee’ style and ‘Young-Soak Han’ style; however, the timing when the changes occurred was different according to the dance style. Angular velocity and muscle activity during ‘Joa-u-chigi’ were higher in skilled of ‘Young-Soak Han’ style than skilled of ‘Mae-Bang Lee’ style. It was concluded that the movement of wrist during ‘Joa-u-chigi’ was performed with better timing as well as in smoother and stronger fashion in skilled than unskilled in both styles.

승무 좌우치기 동작 중 숙련도와 류파에 따른 어깨 각도, 각속도 및 근활성도의 비교

홍경아(Hong, Kyung-A),김현숙(Kim, Hyun-Sook),이만균(Lee, Man-Gyoon) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.6

This study was designed to compare joint angle, angular velocity, and EMG activity of shoulder during "Joa-u-chigi" according to skill level and style of "Seungmu". Ten skilled and ten unskilled Korean dancers participated in the study. Dependent variables were compared according to skill level as well as between skilled dances of both styles. Main results were as follows: 1) In "Mae-Bang Lee" style, the amount of changes in angle and angular velocity were greater in skilled than unskilled. In addition, EMG activity of trapezius was greater at P1 and P3 in skilled than unskilled. 2) In "Young-Sook Han" style, angle and angular velocity of shoulder were not changed from middle of P1 to end of P2 in unskilled, indicating that their shoulder was not moved properly. 3) The movement of "Young-Sook Han" style started with greater angle of shoulder than "Mae-Bang Lee" style. Range of changes in angular velocity of "Young-Sook Han" style was greater than "Mae-Bang Lee" style throughout the movement. Conclusion was that the movement of shoulder during "Joa-u-chigi" was performed with more balanced manner as well as in smoother and stronger fashion in skilled than unskilled in both styles. These results would be expected to be applied well in the field of education as a very meaningful information.

12주간의 저항성운동 트레이닝이 비만 남성의 기초대사량과 adipocytokine에 미치는 영향

이만균 ( Man Gyoon Lee ),성순창 ( Soon Chang Sung ),이신언 ( Shin Eon Lee ),정원상 ( Won Sang Jung ) 한국운동생리학회(구 한국운동과학회) 2011 운동과학 Vol.20 No.4

이만균, 성순창, 이신언, 정원상. 12주간의 저항성운동 트레이닝이 비만 남성의 기초대사량과 adipocytokine에 미치는 영향. 운동과학, 제20권 제4호, 405-416, 2011. 본 연구의 목적은 12주간의 저항성운동 트레이닝이 20대 비만 남성의 기초대사량과 adipocytokine에 미치는 영향을 규명하는 것이다. 연구 대상자는 체지방률 25% 이상의 남성 28명으로서, 이들을 저항성 트레이닝 집단(n=14)과 통제 집단(n=14)으로 구분하였다. 저항성 트레이닝 집단의 대상자는 12주간, 주당 3~4회, 회당 40~60분씩, 8 RM의 강도로 2~3 세트씩 저항성운동 트레이닝을 실시한 반면, 통제 집단의 대상자는 같은 기간 동안 평소 생활 습관을 유지하도록 하였다. 본 연구의 주요결과는 다음과 같다. 1) BMI와 체지방률에서 검사의 주효과가 유의하게 나타났으며, 두 집단 모두 체지방률의 유의한 감소가 나타났다. 2) 1-RM과 관련된 모든 변인은 저항성 트레이닝 집단에서만 유의하게 증가되었다. 3) RMR은 단위와 상관없이 모든 변인이 저항성 트레이닝 집단에서 유의하게 증가된 것으로 나타난 반면, 통제 집단의 경우 RMR(KJ·kg-1 FW·h-1)에서만 유의한 증가가 나타났다. 4) TT4와 norepinephrine에서 검사의 주효과가 유의하게 나타났다. 저항성 트레이닝 집단과 통제 집단 두 집단 모두의 경우 norepinephrine에서 유의한 감소가 나타났다. 5) Adiponectin과 IL-6에서 검사의 주효과가 유의하게 나타났으며, 두 집단 모두에서 adiponectin과 IL-6가 유의하게 감소된 것으로 나타났다. 12주간의 저항성운동 트레이닝은 안정 시 대사율을 증가시켜 장기적인 체중 관리에 효과적일 것으로 결론지을 수 있다. 또한 저항성운동이 안정 시 대사율을 증가시키는 기전을 밝히기 위하여 TT4, FFA, 그리고 norepinephrine 이외의 변인을 연구해 볼 필요가 있으며, 저항성운동이 adipocytokine에 미치는 영향을 보다 명확히 규명하기 위한 후속 연구가 요청된다. Lee, M. G., Sung, S. C., Lee, S. E., Jung, W. S. Effects of 12 weeks of resistance exercise training on resting metabolic rate (RMR), and adipocytokines in obese men of 20s. Exercise Science, 20(4): 405-416. 2011. Twenty-eight obese men, aged 23.7±1.18 yrs, were randomly assigned to one of two groups, i.e., resistance exercise training group (TR: n=14) and control group (CON: n=14). Participants in TR performed resistance exercise training 40~60 min/session, 3~4 sessions/week, for 12 weeks, whereas participants in CON were asked to maintain their normal life pattern during same intervention period. Resistance exercise included bench press, shoulder press, biceps curl, triceps extension, lat pull down, leg press, leg curl, leg extension, sit up, standing calf raise, and squat, and performed at 8 RM for 2~3 sets. Main results of the present study were as follows: 1) Percent body fat decreased significantly in TR (p<.01) and CON (p<0.05). 2) All variables regarding 1-RM increased significantly in TR. 3) RMR increased significantly in TR, regardless of unit expressing the RMR. 4) No significant changes were found in TT4 and FFA, whereas NOR decreased significantly in TR (p<.001) and CON (p<.01). 5) Adiponectin and IL-6 decreased significantly in TR (p<.01) and CON (p<.01), whereas no significant change was found in TNF-α. Leptin was unaltered in TR, but increased significantly in CON. It was concluded that 12 weeks of resistance exercise would be beneficial for long-term body weight management by enhancing metabolic rate in resting state. Research investigating the mechanism explaining the enhancement, besides to TT4, FFA, and NOR, would be needed. Investigation elucidating the effects of resistance exercise training on adipocytokines would be also warranted.

스포츠 클라이밍 동호회 활동이 중년 여성의 체력, 낙상관련 변인 및 심혈관기능에 미치는 영향

이만균(Lee, Man-Gyoon),이지은(Lee, Jee-Eun),강창균(Kang, Chang-Kyun) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.3

This study was designed to examine the effects of sports climbing club activity on physical fitness, falling injury-related variables, and cardiovascular function in middle-aged women. Physical fitness, isokinetic function of ankle, static and dynamic balance, and cardiovascular function were measured in 14 sports climbing cllub participants (SC) and 13 general individuals (GEN). Main results obtained by comparing all variables between SC and GEN were as follows: 1) Left and right first finger joint-grip strength, left general grip strength, back strength, push up, and side step were significantly higher in SC than GEN. 2) Most variables regarding isokinetic strength and endurance for plantar flexion were significantly higher in SC than GEN, whereas no significant differences were found in isokinetic strength and endurance for dorsiflexion between SC and GEN. 3) Sways for static and dynamic balance test were significantly lower in SC than GEN. 4) Regarding cardiovascular function, SC showed significantly higher VO₂max than GEN. DBP and most variables regarding vascular elasticity tended to be better in SC than GEN. It was concluded that physical fitness, falling injury-related variables, and cardiovascular function were improved by sport climbing club activity, indicating that sport climbing would be beneficial for health promotion in middle-aged women.

생활체육 동호인과 일반인의 건강체력연령 비교,분석

이만균 ( Man Gyoon Lee ),김형돈 ( Hyung Don Kim ),송종국 ( Jong Kook Song ),공성아 ( Sung A Kong ),성순창 ( Soon Chang Sung ) 한국스포츠정책과학원(구 한국스포츠개발원) 2005 체육과학연구 Vol.16 No.3

지금까지 국가적인 차원에서 생활체육의 활성화를 위하여 상당한 투자를 해 왔음에도 불구하고 생활체육 동호인 조직에서 활동하는 사람들의 효과를 과학적으로 입증한 자료가 매우 제한적이었다. 따라서 본 연구에서는 2년 이상 활동해 온 생활체육 마라톤 동호인과 최근 2년간 규칙적인 운동에 참여하지 않은 일반인의 건강체력연령(vital age)을 산출하여 실제 연령과의 차이를 두 집단 간에 비교하고자 하였다. 생활체육 동호인 30명과 일반인 20명을 선정하여 Tanaka et al. (1990, 1993)이 개발한 건강체력연령 산출 공식에 의거하여 필요한 요소를 측정하였다. 남자의 경우 견갑골 하부 피부두께, 수축기 혈압, 총콜레스테롤, 중성지방, 젖산역치 수준에서의 산소섭취량, 젖산역치 수준에서의 심박수, 사이드 스텝, 눈감고 외발서기, 그리고 1초 강제 호기량을 측정하였고, 여자의 경우 복부 둘레, 수축기 혈압, 젖산역치 수준에서의 산소섭취량, 젖산역치 수준에서의 심박수, 총콜레스테롤, 저밀도 지단백 콜레스테롤, 중성지방, 헤마토크리트, 사이드 스텝, 눈감고 외발서기, 1초 강제 호기량을 측정하였다. 이 요소들을 공식에 대입하여 건강체력연령을 산출하여 다음과 같은 결과를 얻었다. 생활체육 동호인과 일반인의 건강체력연령과 실제 연령의 차이를 비교한 결과, 실제 연령과 건강체력연령의 차이가 남자의 경우 생활체육 동호인이 -20.64±6.1세, 일반인이 +1.85±12.6세, 여자의 경우 생활체육 동호인이 -13.13±4.87세, 일반인이 -0.1677±5.1세로 나타나 생활체육 동호인의 건강체력연령이 실제 연령에 비하여 유의하게 낮은 것으로 나타났다. 이상의 결과를 토대로 볼 때, 지속적으로 생활체육에 참여하고 있는 생활체육 동호인의 건강체력 수준이 일반인에 비하여 매우 우수한 것으로 나타났다. 본 연구의 결과에서 나타난 명확한 생활체육의 효과를 범국가적으로 홍보함으로써 일반 국민들이 생활체육에 참여하도록 적극적으로 유도하는 노력이 뒤따라야 할 것으로 판단된다. Although a great deal of investments have been put for the enhancement of the Sports for all by the government, the scientific data of effectiveness of sports club activities have been very limited in Korea. This study was designed to compare the difference between vital age and chronological age in sports club participants (SCP) and general individuals (GI) who have not participated in systematic exercise training. 30 SCP and 20 GI were volunteered to participate in the study as subjects. The equations for the vital age developed by Tnanka et al. (1990, 1993) were utilized in this study. The components for the equation were measured for all subjects. Subscapular thickness, systolic blood pressure, total cholesterol, triglyceride, VO2LT, HR LT, side step, one leg standing with eyes closed, and FEV1.0 were measured for men, abdominal circumference, systolic blood pressure, VO2LT, HR LT, total cholesterol, LDL-C, triglyceride, hematocrit, side step, one leg standing with eyes closed, and FEV1.0 were measured for women The differences between vital age and chronological age of SCP and GI were compared. The results of this study were as follows: The differences between vital age and chronological age were -20.64±6.10yrs for male SCP, -13.13±4.87yrs for female SCP, +1.85±12.60yrs for male GI, and -0.17±5.10yrs for female GI, indicating that the vital age of SCP were lower than chronological age of SCP. It was concluded that the vital age of SCP was lower comparing to the results of GI. The results supporting the effectiveness of sports club activities would be published to the people in national-wide.

12주간의 유산소성 운동 트레이닝이 휴식 시, 음식 섭취 후 및 최대하 운동 후 회복기 중의 인슐린 민감도에 미치는 영향

이만균 ( Man Gyoon Lee ) 한국스포츠정책과학원(구 한국스포츠개발원) 2002 체육과학연구 Vol.13 No.4

본 연구에서는 12주간의 유산소성 운동 트레이닝이 다양한 상황, 즉 휴식시, 음식 섭취 후, 그리고 최대하 운동 후 회복기에 측정한 인슐린 민감성에 미치는 영향을 규명하고자 하였다. 건강하고 트레이닝을 받은 바 없는 18~32세의 남자 19명이 피검자로 참가하였으며, 그들은 운동 트레이닝 집단 (EX: 9명)과 통제 집단 (CON: 10명) 중의 하나로 무선할당되었다. 사전검사 (PRE)의 첫날 체지방률과 최대산소섭취량을 측정하였고, 둘째 날에는 휴식시와 음식섭취 후 120분간 인슐린과 혈당 측정을 위하여 혈액을 채취하였다. 세번째 날에는 최대산소섭취량의 70%에서 30분간 운동을 한 후 120분간 회복하는 동안 역시 혈액을 채취하였다. 사전검사를 마친 후 12주간 운동집단은 유산소성 운동 트레이닝을 받았고 통제집단은 기존 생활을 유지하도록 하였다. 그 후 사후검사 (POST)에서 사전검사와 같은 검사를 실시하였다. 반분법에 의거한 변량분석을 이용하여 결과를 통계적으로 분석하였다. 두 집단간 PRE결과를 보면 연령, 체지방률, 그리고 최대산소섭취량에 유의한 차이가 없는 것으로 나타나 집단 구분이 무선으로 잘 된 것으로 나타났다. 12주간의 트레이닝을 통하여 EX에서 최대산소섭취량이 유의하게 증가한 것으로 나타나 본 연구에서 실시한 유산소성 운동 트레이닝이 심폐지구력 증가에 매우 효과적이었던 것으로 밝혀졌다. 휴식시에는 EX에서 인슐린과 혈당이 트레이닝을 통하여 모두 감소한 것으로 나타나 인슐린 민감성이 증가된 것으로 사료된다. 음식섭취 후에는 EX집단에서 인슐린의 농도가 유의하게 변하지 않는 상태에서 당의 섭취가 유의하게 증가된 것으로 볼 때 역시 인슐린 민감성이 증가된 것으로 보인다. 아울러 운동 후 회복기 중에도 EX에서는 회복기 전반에 걸쳐 인슐린의 농도가 혈당이 모두 감소되는 것으로 나타나 역시 인슐린 민감성이 증가된 것으로 밝혀졌다. 이상의 결과를 종합해 볼 때 12주간의 유산소성 운동 트레이닝은 휴식시 뿐만 아니라 음식섭취 후, 그리고 운동 후 회복기 중에도 인슐린 민감성을 증가시키는 것으로 나타나 건강 개선에 매우 유의한 것으로 밝혀졌다. The present study was designed to investigate the effects of aerobic exercise training on insulin sensitivity in various situations, i.e., at rest, after ingestion of a meal, and during recovery phase after a submaximal exercise. Nineteen healthy, untrained males, aged 18-32yrs, were randomly assigned to one of two groups, i.e., exercise training group (EX: n=9) and control group (CON: n=10). All subjects participated in preliminary testing, in which percent body fat and maximal oxygen consumption were measured, on the first day. Then, blood samples were obtained at rest and after ingestion of a meal for subsequent determination of insulin and blood glucose on the second day, followed by blood collection during recovery phase after exercise performed for 30 minutes at 70% of VO2max. Upon the completion of the pre-intervention test (PRE), each subject underwent 12 weeks of intervention, either exercise training for EX group or no changes in life style for CON group. Same variables were measured in the post-intervention test (POST) after the intervention for the purpose of comparison with pre-intervention data. ANOVA using either split-plot design or split-split plot design was used to analyze the data. Twelve weeks of exercise training resulted in a significant (p< .001) increase in VO2max, supporting a substantial cardiorespiratory training effect. Resting insulin and blood glucose concentrations decreased after exercise training in the present study and these results indirectly support increased insulin sensitivity, despite the differences in resting insulin and blood glucose between EX PRE and EX POST failed to reach a statistically significant level. The insulin sensitivity appears to be increased after ingestion of a meal considering the faster uptake of glucose from 30 minutes after ingestion of a meal in EX POST compared to EX PRE, despite no significant changes in insulin concentrations by the exercise training. Insulin concentrations measured during exercise and recovery for the same absolute intensity trials decreased significantly after exercise training, indicating that insulin sensitivity increased by training since blood glucose was significantly lower throughout recovery in EX POST. It was concluded that insulin sensitivity increased due to the 12-week aerobic exercise training in various situations, i.e., at rest, after ingestion of a meal, and during recovery phase after submaximal exercise.

12주의 유산소운동 트레이닝이 식사 후 열량효과에 미치는 영향

이만균 ( Man Gyoon Lee ),Darlene A. Sedlock 한국운동생리학회 2009 운동과학 Vol.18 No.3