급속과 점증체중감량이 태권도선수의 호흡교환율, 심박수 및 근력에 미치는 영향

권영우 ( Y. W. Kwon ) 한국운동생리학회(구 한국운동과학회) 2011 운동과학 Vol.20 No.3

권영우. 급속과 점증체중감량이 태권도선수의 호흡교환율, 심박수 및 근력에 미치는 영향. 운동과학, 제 20권 제3호. 319-328, 2011. 본연구는 태권도선수의 급속 및 점증체중감량(체중의 6%)이 호흡교환율, 심박수, 근력에 미치는 영향을 규명하기 위한 것이다. 20명의 태권도선수가 본 연구에 참여하였으며 급속감량집단(n=10)과 점증감량집단(n=10)으로 나누었다. 급속감량집단은 3일 동안 수분과 식이제한, 사우나와 운동에 의한 발한으로 체중을 감량하였다. 점증감량집단은 14일 동안 수행되었으며 식이제한과 운동에 의하여 이루어졌다. 운동은 트레드밀을 이용하였으며 4분 이내 최대심박수의 75%강도에 도달하게 한 후 30분간 달리기를 수행하였다. 그 후 운동강도는 매 3분마다 0.9 mile/hour, 경사도는 2% 증가시켜 고갈 때 까지 운동을 수행하였다. 호흡교환율과 심박수는 안정 시 운동 30분, 운동직후에 측정되었으며 근력과 근지구력은 체중감량전과 후에 측정되었다. 결과 호흡교환율은 최대하운동에 따라 증가하였으며 급속감량집단이 점증감량집단에 비하여 감소율이 높았다. 심박수의 경우 체중감량 후 감소하였으며 급속과 점증감량에 따른 변화차이는 없었다. 근력의 경우 악력과 배근력의 차이는 없었지만 윗몸일으키기의 경우 급속감량집단이 감량 후 유의하게 감소하였다. 결론적으로 급속체중감량은 지방의 이용을 증가시키고 근력은 부분적으로 감소시키는 것으로 나타났다. 보다 명확한 규명을 위해서는 급성과 점증감량에 따른 산화효소와 해당효소의 변화와 관련된 추가적인 연구가 요망된다. The purpose of this study was to investigate the effects of rapid and gradual weight loss (6%) on RER, heart rate and strength of athletes. Twenty male Taekwondo players participated in this study and were divided to rapid (RW, n=10) and gradual weight loss group (GW, n=10). RW group reduced their body weight for 3day by fluid and energy restriction and forced sweating by souna and exercise. GW group reduced their weight for 14day by energy restriction and exercise. Exercise sessions took place on a treadmill performing 4 minutes of running to reach targeted intensity (75% HRmax) and continued during 30 minutes. After 30 minutes, work rate was gradually increased (0.9 mile per hour every 3 minutes, 2% degree elevation) until exhaustion. RER and heart rate were measured before, during (30minutes) and immediately after an incremental treadmill test to exhaustion. Muscle strength was measured from pre and post body weight loss. RER significantly increased with exercise and this exercise induced increase was lower RW group than GW group. Acute and chronic weight loss increased heart rate with exercise but their were any significant different with RW and GW. Back and grip strength did not show any significant change with weight loss, but sit up decreased significantly after rapid weight loss. In conclusion, rapid weight loss enhanced fatty acid utilization and decreased muscle strength of taekwondo player. Further study needed to elucidate the exact mechanism related to glycolytic and oxydative enzyme change with acute and chronic weight loss.

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.

체급경기선수의 급속체중감량이 혈관조절인자 (ET-1, PGI₂)와 지질과산화에 미치는 영향

권영우(Kwon, Yeung-Woo) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.3

The purpose of this study was to investigate the effects of rapid weight loss on vascular regulatory factors(ET-1, PGI₂) and MDA, Twenty four male wrestlers participated in this study and were divided to weight loss group(n=12) and control groups(m=12). All subjects reduced approximately 6% of their body weight. Weight loss was achieved in 7day by fluid and energy restriction and forced sweating. Blood sampling were performed before and following weight loss and were extracted to analyze all variables from rest, immediately after exercise, 30minutes recovery period. PGI₂ levels significantly increased in both groups immediately after exercise and recovery period but there was no significant difference between the tow groups. MDA levels significantly increased in both groups immediately after exercise and recovery period and this exercise induced increase was higher in weight loss group than in control group. In conclusion, acute exercise enhanced vasodilation and lipid peroxidation. Rapid weight loss exaggerated lipid peroxidaton. Further study needed to elucidate the exact mechanism related to different weight loss period and amount.

시대의 반영으로서 문학 - 고대 그리스 비극과 셰익스피어 작품을 중심으로 -

권영우 ( Kwon Young Woo ) 세계문학비교학회(구 한국세계문학비교학회) 2020 世界文學比較硏究 Vol.71 No.-

이 논문은 고대 그리스 비극작품과 셰익스피어 작품이 각기 당대의 시대상이나 세계관을 반영하고 있다는 점을 밝힘으로써 문학이 시대상을 반영한다는 점을 밝히고자 한다. 인간의 모든 활동이 그 시대의 산물이듯 문학작품도 시대적 산물이라고 할 수 있다. 문학이 시대의 한계 내에 있다는 점은 구체적으로 문학작품이 사회와 문화 그리고 역사의 한계를 넘을 수 없음을 의미한다. 문학이 역사와 상호적 관계를 형성하고 있음은 헤겔철학적으로 볼 때 절대정신인 예술이 객관정신에 속하는 역사와 상호적 관계를 이루며 발전함을 의미한다. 헤겔철학에 따르면 문학이 시대를 반영하면서 발전하는 것은 객관정신과 절대정신의 부정적 자기관계 속에서 가능하다. 이는 절대자가 유한한 시대를 초월하여 자신을 전개하는 것이 아니라, 오히려 절대자는 자신을 전개하기 위해 자기가 아닌 유한자를 매개로서 필요로 한다는 것을 함축한다. 그리고 무시간적인 절대자는 시공간의 한계 속에서 자신을 전개한다. 이러한 점은 절대자의 부정적 자기관계성을 보여준다. 예술의 한 장르인 문학이 시대상을 반영한다는 것은 예술의 자율성도 시대적 한계 내에 있음을 보여준다. 하지만 문학과 현실은 일치의 관계가 아니라는 점에서 예술로서의 문학은 자신의 독자적인 발전원리를 가지고 자율적으로 발전한다. 다만 문학이 현실을 반영한다는 점에서 문학은 사회로부터 영향을 받기도 하며 사회에 영향을 줄 수도 있다. 이런 점에서 문학은 세계와 시대의 모습을 담은 하나의 디오라마라 할 수 있을 것이다. 하지만 문학 자체가 현실이 아니라는 점은 마치 디오라마가 세계 자체가 될 수 없는 것에 비유할 수 있을 것이다. The purpose of this paper is to show that literature reflects time. To achieve this, this article considers that ancient Greek tragedies can reflect features of that time and that Shakespeare’s works can reflect the view of the world at that time. As all human activities are products of time, literary works are also symbolic of the time when they are published. That literature is limited by the time implies, in concreto, that literary works cannot transcend social, cultural, or historical boundaries. Literature as a genre of art develops in its relation to history. According to Hegel, the relationship is based on the development of an absolute spirit which is art because absolute spirit develops within history that belongs to the object spirit. Hegel asserts that the interactive development between art and history is possible in a negative self-relation between absolute and objective spirit. It means that the absolute spirit does not develop beyond the finite time. The absolute spirit rather needs the finite time for its development. The absolute spirit that is a-spatiotemporal develops spatiotemporally. This shows the negative self-relation of absolute spirit. According to Hegel, art belongs to the absolute spirit while the literature reflects the reality. It signifies that the autonomy of art is limited by time. Literature does not correspond to reality. It develops autonomously with intrinsic principles for its development. It reflects reality and the times. Thus, it is influenced by reality and vice versa. In this context, literature can be regarded as a diorama that imitates our real world and time. However, the diorama can never be our real world because literature is fictive.

지적장애인과 일반인의 일일주기에 따른 체력과 체온의 변화

권영우(Kwon, Yeung-Woo) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.4

The purpose of this study was to investigate the difference of circadian rhythm on muscle strength and endurance(back strength, grip strength, sit-up) and body temperature between mentally retarded males and non-handicapped males and to verify the possible corelation between muscle strength and body temperature. Twenty four males participated in this study and composed of mentally retarded males group(n=12) who were classified as a light mental retardation and non-handicapped group(n=12). Subjects measured back strength, grip strength, and sit-up at 08:00hour and 18:00hour respectively. Body temperature was measured at rest, immediately after 30 minute exercise(75%HRmax) at 08:00hour and 18:00hour respectively. Back strength and sit-up were significantly higher in normal group rather than handicapped males. Back strength and sit-up of non-handicapped groups were higher at evening time than morning time. but handicapped person did not show any significant circadian rhythm in all physical fitness parameters. Resting body temperature was higher at evening time than morning time both handicapped and non-handicapped men. After exercise non-handicapped group showd higher body temperature at evening day than morning day but mentally retarded person did not show any change with circadian rhythm. Although non-handicapped person showed significant correlation with body temperature and physical fitness both rest and immediately after exercise, handicapped person did not show circadian rhythm. We conclude that before exercise non-handicapped males showed normal circadian rhythm and correlation of physical fitness but after exercise circadian rhythm and correlation is disappeared. Also handicapped person showed abnormal circadian rhythm.

다목적 선굴(禪窟): 돈황(敦煌) 막고굴(莫高窟) 제285굴(第285窟)의 기능에 대한 재고

권영우 ( Young Woo Kwon ) 중앙아시아학회 2015 中央아시아硏究 Vol.20 No.1

Dunhuang Mogao cave 285 has been considered as the cave that is highly likely to be sponsored by Yuan Rong (r. 525-542), who was the provincial governor of Guazhou at that time, because of well-preserved inscriptions including the absolute date(538, 539 C.E.) on the north wall. Regarding the function of cave 285, however, most scholars have not been able to come up with specific and critical solution more than this cave closely related with meditation practices for Buddhist monks. This speculation was certainly derived from the visual elements of cave 285. First and foremost, the cave is assumed to be modeled after Indian vihara caves. In addition to this, there are two statues depicting monks in meditation enshrined in niches on the west wall, and thirty-five painted monks in meditation in the lower limit of the ceiling. This paper re-examines the original function of cave 285 at the time of its foundation, which begins with the fundamental question what was the initial intention for the occupants at that time to construct this facility. To this end, I will rebuild the intrinsic uniqueness inherent in this cave by comparing with vihara caves and meditation caves in China, Central Asia, and India which exhibit structural resemblance to that of cave 285 firstly. The uniqueness of the cave is found in two aspects. First, its structure seems to be intended more as a ritual space than just ‘dwelling’ and ‘meditative practice’ space. Second, the motifs of meditative monks, expressed in an exaggerated way, emphasized the sanctity of the monks. Finally, I would like to maintain that it was highly possible for cave 285 to be considered as ‘the multipurpose meditation cave’ to practice the ritual ceremonies, such as ordination and repentance ceremony, including meditative practices as well. The two facts that these ritual ceremonies had indivisible relation with meditative practices and the sanctity of the monks, which is emphasized on cave 285 as I pointed out above, also had close link with these two ceremonies in medieval Chinese Buddhism support this assumption. To be more specific, the implicative meaning of hunting motifs on the ceiling and the south wall as well as Buddhist narrative paintings on the south wall also represent the ordination and repentance ceremony. Furthermore, these motifs and paintings might also be understood in the historical context of the period. From late Beiwei period, it was chaotic period for Buddhist community throughout the country that most, if not all, monks and nuns were violating precepts and regulations. Thus, it seems reasonable to assume that the facility to hold the ritual purifying monks, such as cave 285, was needed in the monastic community of Mogao at that time: the community’s will to renovate the precepts is actually shown by texts such as Dunhuang manuscript titled Regulations for the Local Religious Body (Dunhuang ben jiao tuan zhi gui).

조갑 주변의 후천성 수지 섬유각화종

권영우(Young Woo Kwon),최인철(In Cheul Choi),박종웅(Jong Woong Park) 대한정형외과학회 2021 대한정형외과학회지 Vol.56 No.2

후천성 수지 섬유각화종(acquired digital fibrokeratoma)은 비교적 드문 피부 양성 종양으로 손가락과 발가락 말단부에 주로 발생한다. 일반적으로 성인에서 단독으로 발생하는 과각화성의 돔 형태(dome-shaped) 종괴로 관찰되며 때로는 잔류 과다지(rudimentary supernumerary digit) 양상이거나 손톱(accessory nail)이 여러 개인 양상, 혹은 사마귀와 같은 보다 일반적인 상태로 오진되는 경우가 있다. 발생기전은 아직 확실하지 않으나 물리적인 외상이 가장 흔한 원인으로 알려져 있다. 저자들은 36세 남자 환자에서 좌측 제2수지의 외상 후 발생한 잔류 과다지 형태의 후천성 수지 섬유각화종을 진단하고 절제 생검술을 시행한 후 조직학적 검사를 통해 확진한 1예를 문헌 고찰과 함께 보고하고자 한다 Acquired digital fibrokeratoma is very a rare, benign, fibrous, and hyperkeratotic skin tumor that develops most frequently on the finger or toe. The tumor usually occurs in adults as a solitary, dome-shaped lesion. Sometimes, it appears as a rudimentary supernumerary digit and may be misdiagnosed as an accessory nail (double nail) or verruca vulgaris. The pathophysiology of an acquired digital fibrokeratoma is unknown. On the other hand, trauma has often been proposed as a predisposing factor for an acquired type of digital fibrokeratoma. This paper reports a case of trauma-related acquired digital fibrokeratoma presenting as a supernumerary digit and nail in a 36-year-old male. This case is presented with a 0.5 cm×0.4 cm×1.3 cm sized, firm, hyperkeratotic, protruding mass over the left second finger nail.

일회성 내리막(downhill)과 오르막(uphill)운동이 당과 젖산, CK에 미치는 영향

권영우(Kwon, Yeung-Woo) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.6

The aim of the study was to investigate the effects of a single bout of concentric exercise and a single bout of eccentric exercise inducing no or just mild muscle damage, matched for energy expenditure, on glucose, lactate, CK concentration. 8 healthy and active male participants took part in a randomized cross over trial consisting of 30minutes concentric(uphill, 16%) respectively eccentric(downhill, -16%) exercise on a treadmill. Exercise intensity was matched at 60% of HRmax. Two weeks later, the subjects completed the same protocol with the opposite exercise type. Exercise protocols had same heart rates indicating matched intensity and metabolic demands. Venous blood samples were drawn before, directly after and 3 hours after exercise. CK concentration increased significantly immediately and 30minutes after eccentric exercise compared to baseline, but concentric exercise did not induce any significant change with exercise and recovery period. Glucose concentration decreased significantly immediately after concentric exercise but not after eccentric exercise compared to baseline. Lactate concentration increased immediately after exercise then decreased 3hours after exercise, but no difference in the pattern of change was measured between concentric and eccentric exercise treatment. These results suggest that glucose metabolism immediately after exercise was lower in concentric exercise than eccentric exercise, and eccentric exercise do not necessarily relate to the changes in lactate metabolism.

지역의 일자리가 중산층 인구의 증감에 미치는 영향 분석 - 부산광역시를 중심으로 -

권영우(Kwon, Young Woo),최열(Choi, Yeol) 한국지역개발학회 2024 한국지역개발학회 학술대회 Vol.2024 No.2

This study analyzes the causes and impacts of middle-class migration in Busan, focusing on the interaction between the decline of the middle-class population and economic activity in the region. Since 2010, Busan has experienced a decline in its total and working-age population, which has accelerated since 2016. Consequently, the region is facing a crisis of regional extinction. The primary cause of population outflow in Busan is the scarcity of employment opportunities, particularly among young individuals. Approximately 28.8% of Busans youth plan to leave the city, with 50.8% of them aspiring to relocate to Seoul. This trend is projected to persist in the future. Despite the implementation of various policies by the Busan city and central government to promote regional balance, the gap with the Seoul metropolitan area is widening. It is important to note that the declining population of the middle class may have a negative impact on the regions growth. The study suggests that changes in the number of R&D businesses have the greatest impact on middle-class population growth, while secondary industries have no significant impact. Therefore, Busan needs a location strategy tailored to the type of industry. Specifically, attracting jobs in social services and R&D is expected to have a positive impact on middle-class recovery.

인터넷 환경에서 패킷기반 시간규모변환을 적용한 적응형 오디오 재생 기법의 구현

권영우(Yong-Woo Kwon),김종원(JongWon Kim) 한국통신학회 2003 한국통신학회 학술대회논문집 Vol.2003 No.11