40세 이하 여성의 연령 차이에 따른 동맥경직도 차이

김진형(Kim, Jin-Heung),권영우(Kwon, Yeung-Woo) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.5

The purpose of this study is to observe whether there is a difference in arterial stiffness according to age difference. A total of 24 women under 40 years of age were selected for this study and consisted of high(mean age 18.7years) and low(mean age 35.8years) age groups. Measurement items were baPWV, ABI, and extremity blood pressure. As a result of the measurement the following results were obtained. The baPWV of the right upper arm and right ankle showed a higher trend in those in their high age groups than those in their low age groups but there was no significant difference. The baPWV of the left upper arm and left ankle also tended to be higher in those in their high age groups than in their low age groups but there was no significant difference. In the case of ABI, both the right and the left showed a higher trend in those in their high age groups than those in their low age groups, but there was no significant difference. In the left-right comparison of blood pressure by extremity the systolic blood pressure of the right arm was higher than that of the left arm and the systolic pressure of the left ankle was higher than that of the right ankle but there are no significant different. In the comparison according to upper extremity and lower extremities both systolic and diastolic blood pressures showed that the lower extremity systolic blood pressure was significantly higher than the upper extremity systolic blood pressure, But extremity blood pressure did not show any difference according to age difference indicating that there was no arterial stiffness difference between the high age groups and low age groups.

다른 강도의 일회성운동이 염증인자 및 CK에 미치는 영향

고성경 ( Seong Kyeong Ko ),류호상 ( Ho Sang Yoo ),권영우 ( Yeung Woo Kwon ),안나영 ( Na Young Ahn ),김진형 ( Jin Heung Kim ),권광선 ( Kwang Sun Kwon ),김권섭 ( Kwon Sup Kim ) 한국운동생리학회(구 한국운동과학회) 2011 운동과학 Vol.20 No.4

고성경, 권영우, 류호상, 안나영, 김진형, 권광선, 김권섭. 다른 강도의 일회성운동이 염증인자 및 CK에 미치는 영향. 운동과학, 제20권 제4호. 367-378, 2011. 본 연구는 일반여성의 다른 강도의 운동이 염증인자인 CRP, 백혈구, 백혈구아형와 근육손상인자인 CK에 미치는 영향을 규명하기 위한 것이다. 11명의 여성이 본 연구에 참여하였으며 최대심박수의 65%와 최대심박수의 80%의 운동을 트레드밀을 이용하여 수행하였다. 연구대상들은 각각 250~300 kcal와 동일한 운동량을 수행하였다. 분석을 위한 채혈은 안정 시, 운동직후, 24시간 회복기에 이루어졌다. 결과 CRP의 경우 최대심박수의 80%에서 운동 후 안정 시에 비하여 회복기에 유의하게 증가하였지만 상호작용효과는 없었다. 백혈구의 경우 일회성운동직후 증가하였으며 상호작용효과가 나타나 높은강도의 운동처치가 더욱 높은 증가율을 보였다. 회복기에는 모두 안정 시 수준을 회복하였다. 백혈구아형의 경우 두 처치 모두 운동직후 유의하게 증가하여 회복기에 감소하였다. 그렇지만 상호작용효과는 없었다. 근 손상지표인 CK의 경우 두 처치 모두 안정 시에 비하여 운동직후와 회복기에 유의하게 증가하였으며 상호작용효과는 없었다. Ko, S. K., Yoo, H. S., Kwon, Y. W., Ahn, N, Y., Kim, J. H., Kwon, K. S., Kim, K. S. The effects of different exercise intensity on blood inflammatory and CK concentration. Exercise Science. 20(4): 367-378, 2011. The purpose of this study was to investigate the effect of different exercise intensity on blood CRP, WBC, WBC subsets and CK concentration. Eleven females (age 27.3±4.38, weight 58.2±4.92) participated in this study and performed 65% HRmax and 80% HRmax by treadmill. Subjects performed an isoenergetic bout of exercise equal to 250~300 kcal. Blood samples extracted from pre, immediately after exercise and recovery period (24 hour later). No significant increase was founded in serum CRP concentration after immediately exercise in both treatment. There are significant increase in CRP from baseline to 24 h post-exercise for 80% HRmax but there are no significant interaction with 65% HRmax. Blood WBC concentration significantly increased immediately after exercise and such exercise induced increase was significantly higher for 80% HRmax exercise than 65% HRmax. Blood neutrophil, lymphocyte and monocyte concentration significantly increased immediately after exercise and returned baseline value at recovery period but there was no significant interaction with different exercise intensity. Blood CK concentration was significantly increased immediately after exercise in contrast to pre exercise value in both treatment and continued to the recovery period. But there was no significant interaction with different exercise intensity.

트레드밀을 이용한 내리막 역방향 달리기가 CRP, TG, 순환기능에 미치는 영향

권영우(Kwon, Yeung-Woo),김진형(Kim, Jin-Heung) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.4

The aim of the study was to investigate the effects of a single bout of concentric and eccentric exercise inducing no or just mild muscle damage on blood CRP, TG, circulatory factors(blood pressure, heart rate). 8 healthy and active male participants took part in a randomized cross over trial consisting of concentric(uphill), eccentric(downhill) exercise on a treadmill during 30minutes. Exercise intensity was matched at 60% of HRmax. Concentric exercise ran in a forward direction and eccentric exercise ran reversed direction at 16% slope. Venous blood samples were drawn before, directly after and 3 hours after exercise for blood CRP, and TG concentration. Blood pressure was measured in immediately exercise, 5, 10, 15, 20minutes after immediately exercise. Heart rate was measured in immediately exercise, 1, 2, 3minutes after immediately exercise. CRP and CK concentration did not show any significant difference between exercise and treatment. Systolic and diastolic blood pressure compared to rest, decreased significantly immediately exercise and recovery period but no difference in the pattern of change was measured between concentric and eccentric exercise treatment. In heart rate, no difference in the pattern of change was measured between concentric and eccentric exercise treatment.

축 처짐과 선미관 저널 베어링 유막 압력의 상호작용을 고려한 추진축계 정렬 해석

조대승(Dae-Seung Cho),장흥규(Heung-Kyu Jang),진병무(Byung-Mu Jin),김국현(Kookhyun Kim),김성찬(Sung-Chan Kim),김진형(Jin-Hyeong Kim) 대한조선학회 2016 大韓造船學會 論文集 Vol.53 No.6

생리주기에 따른 일회성운동이 순환기능과 혈중젖산에 미치는 영향

권영우(Kwon, Yeung-Woo),류호상(Yoo, Ho-Sang),김진형(Kim, Jin-Heung) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.3

We examined the pattern of circulatory factors and blood lactate concentration in the early follicular, late follicular, and middle luteal phases of the menstrual cycle in fourteen eumenorrheic women following 30 min of submaximal exercise at 70-75% maximal heart rate. Supine hemodynamic measurements and lactate were assessed at rest and then immediately after exercise. Resting systolic blood pressures increased to significantly higher levels in the early follicular than in the late follicular phase and middle luteal phase(p 〈.05). Resting heart rate and blood lactate did not differ between menstrual phases. Post-exercise blood pressure, heart rate and blood lactate did not differ across menstrual phases. In conclusion mense tend to increase resting blood pressure partially, but this mense related increase disappeared with exercise. Further study needed to elucidate the exact mechanism related to the degree of menstrual syndrome and mense.

레슬링선수의 체중감량이 운동수행의 주기리듬에 미치는 영향

권영우(Kwon, Yeung-Woo),류호상(Yoo, Ho-Sang),김진형(Kim, Jin-Heung) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.4

The purpose of this study was to investigate the effects of weight loss on exercise related circadian rhythm and exercise performance in wrestlers. Fifteen subjects participated in this study and measured leg strength(Cybex test), anaerobic power(Wingate test), VO₂max(Bruce protocol) at 07:00hours and 17:00hours during before and after weight loss. All subjects reduced approximately 6% of their body weight during 15days by fluid and energy restriction and forced sweating. Anaerobic power(average power) and strength(extension peak torque) presented higher levels of 17:00hours than 07:00hours but after weight loss this daily exercise rhythm abolished. Weight loss reduced maximal aerobic running time and muscle endurance capacity. In conclusion weight loss was partially disordered exercise related circadian rhythm and reduced exercise performance. Abolished circadian rhythm was not directly related by reduced exercise performance after weight loss. Further study needed to elucidate the exact mechanism related to different weight loss period and amount.

일회성 유산소운동 후 다량의 알코올섭취가 HPA축과 체온의 주기리듬에 미치는 영향

고성경(Ko, Seong-Kyeong),류호상(Yoo, Ho-Sang),권영우(Kwon, Yeung-Woo),김한철(Kim, Han-Chu),권광선(Kwon, Kwang-Sun),김진형(Kim, Jin-Heung) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.1

The aim of this study was to investigate the effects of an acute large amount of alcohol ingestion(17% distilled alcohol, 9ml/㎏ per 1㎏ body weight) after aerobic exercise on circadian rhythm of HPA axis(ACTH, cortisol), body temperature. Alcohol degradation ability also measured. Twelve male (average age 33.5years, weight 73.1㎏) took part in this study and performed 3 trials (alcohol ingestion after exercise, alcohol ingestion. placebo ingestion) in a randomized, cross-over design at intervals of 1 weeks. They drank dry white wine(mixed with orange) at 18:00hours during 45 minutes. Placebo treatment ingested identical amount of fluid not contained alcohol. Resting blood sample extracted at 24:00hours and 0700hours(following day) for measuring circadian variation. Extra blood also extracted during 30, 120min after alcohol ingestion for alcohol degradation ability. Exercise treatment group performed running at 70%HRmax during 30 minutes by treadmill. Blood cortisol concentration were significantly high by only alcohol ingestion as compared to exercise+alcohol ingestion and placebo ingestion treatment during 07:00 and 24:00hours. The present findings suggest that large alcohol ingestion may deteriorate circadian rhythm and exercise before alcohol ingestion alleviate thus alcohol ingestion related circadian rhythm disorder.

식이직후 저강도 걷기운동이 비만인의 혈중지질, insulin, glucose농도에 미치는 영향

고성경(Ko, Seong-Kyeong),류호상(Yoo, Ho-Sang),권용유(Kwon, Yeung-Woo),김한철(Kim, Han-Chul),권광선(Kwon, Kwang-Sun),김진형(Kim Jin-Heung),허용(Hea, Yong) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.1

The purpose of this study was to compare the acute effects of postprandial exercise on lipid metabolism(TC, LDL, HDL, TG), insulin and glucose in obese sedentary adult men. Twelve obese men with over weight underwent intake of food ingestion(800kcal) before two experimental condition- no exercise control trial, a single bout of walking exercise trial immediately after the food ingestion at low intensity walking(90-100beat/min) for 30 min on a motorized treadmill. Each subject performed 2 trials in a randomized, cross-over design at intervals of 14days. Venous blood samples were drawn before the food intake and 60, 120 and 240minutes after the postprandial exercise. In both experiments, postprandial blood TC, LDL concentrations in the exercise trial were lower, but not significantly, than those in the control. The values of HDL at 60 and 120minutes after the food intake were significantly lower in the postprandial exercise trial than the control trial. Blood insulin and glucose concentration increased significantly at 60 and 120minutes and returned baseline level at 240minutes but there was no significant interaction. The present findings suggest that postprandial exercise may reduce HDL and TG concentration. Postprandial exercise is more effective for improving postprandial lipoprotein metabolism than non-exercise.

운동선수의 월경곤란증이 월경주기에 따른 난소 및 스트레스호르몬 농도에 미치는 영향

권영우 ( Young Woo Kwon ),박승한 ( Seung Han Park ),류호상 ( Ho Sang Yoo ),이종삼 ( Jong Sam Lee ),양승환 ( Sung Hwan Yang ),오광진 ( Kwang Jin Oh ),김진해 ( Jin Hae Kim ),어수주 ( Su Ju Eo ),김진형 ( Jin Heung Kim ),권광선 ( Kwan 한국스포츠정책과학원(구 한국스포츠개발원) 2005 체육과학연구 Vol.16 No.4

이 연구는 운동선수의 월경곤란증이 생리주기(월경기, 분비기)에 따라 난소호르몬(estrogen, progesterone)과 스트레스호르몬 (cortisol, catecholamines에 미치는 영향을 규명하기 위한 것이다. 실험대상자는 21명을 대상으로 월경곤란증의 선수군(n=7), 월경곤란증이 없는 선수군(n=7), 대조군으로 월경곤란증이 없는 일반인 (n=7)으로 구성하였다. 분석결과 난소호르몬의 경우 전체적으로 월경기에 비하여 분비기 높은 수치를 보였으며(p<.001), 집단에 따른 차이는 없었다. 스트레스 호르몬인 cortisol과 epinephrine은 생리주기와 집단에 따른 차이나 변화가 없었다. 그렇지만 norepinephrine의 경우 월경곤란증을 가진 선수군의 월경기 수치가 분비기 수치보다 유의하게 낮았으며, 월경곤란증이 없는 선수군의 월경기 수치보다 유의하게 낮았다(p<.05). 이상의 결과를 요약하면 난소호르몬은 집단에 따른 차이나 변화가 없었으나, 스트레스 호르몬인 norepinephrine의 경우 월경기의 수치가 낮게 나타났다. 보다 명확한 연구의 구명을 위해서는 운동중과 운동형태와 강도, 월경곤란증 정도에 따른 추가적인 연구가 요망된다. The purpose of this study was to investigate the effect of dysmenorrhea on the circulating concentration of ovarian hormone (estrogen, progesterone), cortisol and catecholamines (epinephrine, norepinephrine) during menstrual cycle in athletes. Twelve one females participated in this investigation and composed of athletic group with- and without dysmenorrhea (n=7, respectively), without dysmenorrhea (n=7) and non-athletic control group without dysmenorrhea (n=7). Venous blood sample was obtained during menstrual- and secretory phase. Blood ovarian hormone concentration was significantly increased during secretory phase compared to menstrual phase in all group, but there were no differences among groups. Blood cortisol and epinephrine concentration did not show any change with menstrual cycle also there were no differences among groups. Blood norepinephrine concentration was significantly decreased during menstrual phase compared to secretory phase in athletic group with dysmenorrhea but athletic group without dysmenorrhea and control group did not show any significant change with menstrual cycle. Stress hormone did not show any significant change in all group during menstrual cycle except norepinephrine which revealed significant decrease in menstrual phase compared to secretory phase on athletic group with dysmenorrhea. In conclusion dysmenorrhea can not effect ovarian hormone during menstrual cycle but partially influenced to stress hormone. Further study needed to elucidate the exact mechanism of those hormone about dysmenorrhea related to the degree of dysmenorrhea and correlation between ovarian and stress hormone.

유사 체구성성분의 운동선수와 비운동선수의 최대하운동에 따른 혈장량 및 체수분조절호르몬 비교

박승한(Seng Han Park),류호상(Ho Sang Ryu),권영우(Young Woo Kwon),정연수(Yeun Soo Jung),이종삼(Jong Sam Lee),김진형(Jin Heung Kim) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.41

The purpose of this study was to investigate the effects of submaximal exercise on plasma volume and fluid regulatory hormones (ACTH, renin, aldosterone) between ski athletes and non-athletes. A total of 19 male subjects (10 athletes and 9 non-athletes) were participated in the study and their mean age was 22 years old. Submaximal exercise sessions took place on a bicycle ergometer performing 4 minutes of pedalling to reach targeted intensity (75% V·O2peak) and continued during 20 minutes. Blood samples extracted during rest and immediately after exercise. The Plasma volume decreased immediately after exercise in the both groups, but there were no significant difference between the athletes and the non-athletes. The ACTH, renin and aldosterone concentrations were significantly elevated immediately after exercise in the both group. In particular, the increase was significantly greater in the non-athletes compared to the athletes in the blood renin concentration.