레슬링 선수들의 단기간 체중감량이 슬관절의 등속성 운동능력에 미치는 영향

염종우 한국생명과학회 2002 생명과학회지 Vol.12 No.6

The purpose of this study is to investigate isokinetic strength changes of knee joint in accordance with short-term weight loss of wrestlers. For this purpose, 14 male wrestlers of a K technical high school in B city participated in our research. The wrestlers were divided into two groups; one group of the wrestlers didn't lose any weight, and the other lost over 5% of their weights. The isokinetic strength was also observed before and after weight loss. The isokinetic strenght test were processed at test speed of the$60^{\circ}C$/sec, $90^{\circ}C$/sec, and $250^{\circ}C$/sec with the CYBEX NORM system(Cybex 770+TMS, USA). Peak torque, peak torque %BW, total work, total work %BW, and endurance ratio were measured. Results showed that the isokinetic strength after the short-term weight loss of wrestlers decreased meaningfully Although endurance ratio didn't show any meaningful difference in our research, but more accurate research may find out the relationship between short-term weight loss and the endurance ratio of isokinetic strength. 본 연구는 고교 레슬링선수들의 단기간 체중감량에 따른 등속성 운동능력 중 다리의 peak torque, peak torque %BW, total work, total work %BW, endurance ratio에 대한 변화를 알아보기 위하여 자기 체중에서 체중감량이 없는 집단 7명, 5%이상 감량집단 7명을 대상으로 체중감량 전ㆍ후를 측정하여 얻은 결론은 다음과 같다. 1. Peak Torque의 변화. 굴근의 경우 5%이상 감량 집단의 $60^{\circ}C$sec, $90^{\circ}C$/sec에서 유의하게 감소하였다. 그리고 신근의 경우 5%이상 감량 집단의 $60^{\circ}C$/sec, $90^{\circ}C$/sec, $250^{\circ}C$/sec에서 모두 유의하게 감소하였다. 2. Peak Torque %BW의 변화. 굴근의 경우 5%이상 감량 집단의 60$^{\circ}$/sec, 90$^{\circ}$/sec, $150^{\circ}C$/sec에서 모두 유의하게 감소하였다. 그리고 신근의 경우 5%이상 감량 집단의 $90^{\circ}C$/sec와 $250^{\circ}C$/sec에서 유의하게 감소하였다. 3. Total Work의 변화. 굴근의 경우 5%이상 감량 집단의 $60^{\circ}C$/sec,$90^{\circ}C$/sec에서 유의하게 감소하였다. 그리고 신근의 경우 5%이상 감량집단의 $50^{\circ}C$/sec, $90^{\circ}C$/sec. $250^{\circ}C$/sec에서 모두 유의하게 감소하였다. 4. Total work %BW의 변화. 굴근의 경우 5%이상 감량 집단의 $60^{\circ}C$/sec, $90^{\circ}C$/sec, $250^{\circ}C$/sec에서 유의하게 감소하였다. 그리고 신근의 경우 5%이상 감량 집단의 $50^{\circ}C$/sec, $90^{\circ}C$/sec, $250^{\circ}C$/sec에서 모두 유의하게 감소하였다. 5. Endurance Ratio의 변화. 굴근과 신근의 경우 두 집단 모두 유의한 차이가 없었다. 단기간의 무리한 체중감량은 근력, 근지구력의 저하로 경기력을 저하시킬 뿐만 아니라 건강을 해칠 우려가 있기 때문에 단기간의 무리한 감량이 되지 않도록 과학적이고 체계적인 체중관리가 이루어져야 할 것으로 사료된다.

레슬링선수의 단기간 체중감량에 따른 등속성 운동능력의 변화

염종우 ( Jong Woo Yeom ) 한국운동생리학회(구-한국운동과학회) 2003 운동과학 Vol.12 No.1

식이처방이 축구선수의 경기 전·후 신체구성, 글루코스 및 피로관련 변인에 미치는 영향

염종우(Jong Woo Yeom) 한국체육교육학회 2002 한국체육교육학회지 Vol.7 No.2

The purpose of this study was to evaluate the effect of diet prescription on body composition, glucose and fatigue substance of soccer player of before and after game. The subjects for this study were twenty-one K technical high school soccer players which were divided into three groups. After measured before and after the game, body composition, glucose and fatigue substance were analysed. In conclusion, this study showed that the change of body water, muscle mass, lean body mass, glucose and lactic acid before and after game was influenced by diet prescription. but the change of body weight, fat mass, LDH and ammonia was not influenced by diet prescription. Diet prescription for soccer players is effective in HCD which produces less lactic acid and it is considered that supply of water is also important.

태권도선수의 단기간 체중감량이 체력과 혈중 전해질 농도에 미치는 영향

염종우(Jong Woo Yeom),백영호(Yeong Ho Baek),예정복(Jong Buk Ye) 한국체육교육학회 2003 한국체육교육학회지 Vol.7 No.4

This study was conducted to investigate whether the short-term weight loss had an effect on physical fitness and blood electrolytes in high school Taekwondo players. Sixteen subjects were selected by intentional sampling method, and divided into two groups of eight, test group and control group. All the subjects physical fitness and blood electrolytes before and after weight loss. Test group had to lose their weight by 5% for 6 days. Control group didn`t have to lose their weight. After 6 day, both group members` physical fitness and blood electrolytes density were measured. The results of the test are as following; 1. In the change of physical fitness before and after weight loss, there was significant decreased in muscle endurance of test group. 2. In the change of blood electrolytes density before and after weight loss, there was significant increased on Na^+, K^+, Cl^-, Mg^++ and so on. The results of this study suggest that the Taekwondo players short term weight loss more than 5% in their weight is possibility that decreaing of muscle endurance, unbalance of water and acid-base has a negative influence on their health and game. But because of contrary conclusion It is necessary that we must achieve continuative study.

운동시 성장호르몬 대사에 관한 고찰

백영호,염종우,서혜림 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-

Through the literature study of the effects on the growth hormone metabolic of exercises, we had a conclusion as follows: 1.During exercises, growth hormone secretion has a variable of exercise Intensity and time, secretion threshold of growth hormone by exercises has a constant latency period of 15∼20 minutes after beginning exercise, and growth hormone secretion reacher to maximum after 30 minutes of the maximum exercises. 2.There are more or less differences of time, but amount of secretion of the growth hormone is shown to be similar according to the gender. 3.Injection of the growth hormone to the elders is shown to be most effective in the case of accompanied with exercises. 4.Because exercises causes the natural secretion of the growth hormone and the metabolic, the constant exercises are needed regardless of ages.

레슬링선수들의 체중감량에 따른 섭취열량과 신체조성의 변화

백영호,염종우,염원상,김세종,서혜림 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-

This study was to find out calorie intake and body composition changes in accordance with weight loss of wrestlers. The wrestlers were divided three groups : no weight loss groups, 5∼7% weight loss group and over 7% weight loss group. And they were observed three : before weight loss, at measuring weight and before games. The following are the conclusion of this study: 1.The changes of calorie intake 1) Before weight loss, the percentage of the daily intake to the daily energy expenditure was 57.7% for the no weight loss group, 47.2% for the 5%∼7% weight loss group and 53.7% for the over 7% weight loss group. 2) The calorie intake of each group per meal: the no weight loss group intake 1,118kcal before weight loss, 760.9kcal before weight measurement and 1026.8kcal from after weight measurement to before games, and the 5∼7% weight loss group intake 955.4kcal before weight loss, 483.1kcal before weigh measurement and 880.4kcal from after weight measurement to before games, and the over 7% weight intake 959.3kcal before weight loss, 339.4kcal before weight measurement and 872.7kcal from after weight measurement to before games. 3) The ratios of calorie intake(protein : fat : glucose) : the no weight loss group showed 16.7∼35.1% : 20.8∼23.8% : 44.1∼60%, the 5∼7% weight loss group showed 15.5∼26.6% : 22.2∼23.7% : 50.6∼62.3% and the over 7% weight loss group showed 15.0∼30.2% : 19.6∼27,6% : 50.7∼59 4%. 2.The changes in body composition 1) After weight loss, weight and BMI changes in accordance with weight loss among groups showed meaningful differences in all circumstances : weight, before games versus at measuring weight and before weight loss versus before games.(p≤.001) 2) In the changes of total body water, protein, mineral, fat mass and %fat in accordance with weight loss among groups, when we compared those of before games with those of at measuring weight, we found that the over 7% weight loss group showed a meaningful increase over the no weight loss group.(p≤0.5) 3) In the changes within groups, though we found no meaningful difference, total body water, protein and mineral of before games were less than those of before weight loss, and fat mass and %fat of before games were higher than those of before weight loss. According to the results of this study, the wrestlers lost their weights intensively in three days before games by eating less and when lean body mass was restored, the level was lower than before weight loss. Therefore, these results intake the weakness of exercise capacity, long-term weight loss plan is more helpful than short-term weight loss, and for the enhancement of exercise capacity systematic plan and training of the weigh loss should be done.

유산소 운동과 서킷트 웨이트 트레이닝이 비만 여고생의 신체조성 및 혈청지질에 미치는 영향

한재웅,차성웅,염종우,남태호,김태운,백영호 한국운동영양학회 2000 Physical Activity and Nutrition (Phys Act Nutr) Vol.4 No.2

In this study, to find out the effects of aerobics exercise training and CWT on body compositin and serum lipid in obese highschool girls, for 12 weeks, aerobics exercise training group exercised by 60∼85% HRmax of intensity, 4times/week, 60min/days, while CWT group exercised by 40∼55% HRmax of intensity, 3times/week, 50min/days. Finally we have got the following results : 1. For the variations of weight among groups, aerobics exercise training group and obese CWT group showed more decrease than nonobese CWT group by statistically significant difference(p≤.01). For intra-group paired t-test, before and after experiment, all groups showed decrease. In addition, there were significant differences for nonobese aerobics exercise training group(p≤.001), obese aerobics exercise training group(p≤.01) and obese CWT group(p≤.01). 2. For the variations of BMI among groups, obese CWT group showed more decrease than nonobese CWT group by statistically significant difference(p≤.05). For intra-group paired t-test, before and after experiment, all groups showed decrease. In addition, there were significant differences for nonobese aerobics exercise training group(p≤.001), obese aerobics exercise training group(p≤.01) and obese CWT group(p≤.01). 3. For the variations of % fat among groups, obese aerobics exercise training group showed more decrease than nonobese CWT group by significant difference(p≤.05). For intra-group paired t-test, before and after experiment, all groups showed decrease with significant differences(p≤.01). 4. For the variations of LBM among groups, there were no significant differences. while for intra-group paired t-test, before and after experiment, all groups showed increasement. Only obese aerobics exercise training group showed significant differences(p≤.05). 5. For the variations of TC among groups, aerobics exercise training group show more decrease than that of CWT group by significant difference(p≤.001). For intra-group paired t-test, before and after experiment, aerobics exercise training group showed decrease while CWT group showed increment. In addition, there were significant differences for nonobese aerobics exercise training group(p≤.001), obese aerobics exercise training group(p≤01) and nonobese/obese CWT group(p≤.01). 6. For the variations of TG for intra-group paired t-test, before and after experiment, significant difference exist for aerobics exercise training group and nonobese CWT group(p≤.01). 7. For the variations of HDL-C for intra-group paired t-test, obese aerobics exercise training group(p≤.01), nonobese CWT group(p≤.01) and obese CWT group(p≤.001) showed significant differences. 8. For the variations of LDL-C among groups, CWT group showed more increased than aerobics exercise training group by significant difference(p≤.001). For intra-group paired t-test, before and after experiment, aerobics exercise training group showed decrease while CWT group increased. In addition, there were significant differences for nonobese aerobics exercise training group(p≤.001) and nonobese/obese CWT group(p≤.05). 9. For the variations of PLT among groups, obese aerobics exercise training group showed more increment than obese CWT group by significant difference(p≤.01). For intra-group paired t-test, before and after experiment, aerobics exercise training group and nonobese CWT group showed increment while obese CWT group showed decrease. In addition, there were significant differences for nonobese aerobics exercise training group(p≤.01) and obese aerobics exercise training group(p≤05). 10. For the variations of AI among groups, obese aerobics exercise training group showed more decrease than obese CWT group by significant difference(p≤.05). For intra-group paired t-test, before and after experiment, all groups showed decrease. In addition, there were significant differences for nonobese aerobics exercise training group(p≤.001), obese aerobics exercise training group(p≤.05) and obese CWT group(p≤.01). According to the results of this study, for all groups, the decrease of weight, BMI, %fat, TG and AI, the increment of LBM, HDL-C, PLT means that both aerobics exercise training and CWT can be helpful for improving health. Still much to be desired to clarify the contrary result on TC and LDL-C of aerobics exercise training group and CWT group.

저강도 treadmill 운동이 streptozotocin 유도 당뇨쥐의 혈당, 인슐린 및 지질 농도에 미치는 영향

김세종,서혜림,고정림,염종우,예정복,이선주,김경환,손원협,장은숙 한국생명과학회 2004 생명과학회지 Vol.14 No.2

본 연구는 streptozotocin으로 당뇨병을 유도하는 조건들을 농도에 따른 변화를 관찰하고, 적절한 조건에서 당뇨쥐에서의 저강도의 treadmill 운동이 체중과 혈중의 당, 인슐린 및 지질의 변화에 미치는 영향을 알아보고자 실시하였으며, 연구결과를 요약하면 다음과 같다. 실험 I에서 STZ 주사량이 40 mg/mg으로 높아질수록 정상군에 비해 혈당이 유의하게 증가하고, 반대로 체중과 인슐린 농도는 상대적으로 감소하였다. 실험II에서 STZ 주사를 한 모든 군에서 혈당이 유의하게 증가하지만 BE군은 C군에 비해 그 증가율이 유의하게 억제되었으며, 운동이 인슐린 농도와 혈중지질 농도를 정상적으로 유도하는 것으로 나타났다. 특히, 당뇨 유발 전부터 운동을 실시한 경우 그 효과가 더욱 유의하게 나타났으며, 앞으로 당뇨 유발의 정도와 운동 빈도 및 강도와 관련된 더욱 많은 연구가 이루어져야 할 것으로 사료된다. Exercise is beneficial to the diabetic patients and streptozotocin-induced diabetic rat has been used for the study of exercise effect. The purpose of this study was to establish the optimal condition of induction of hyperglycemic diabetic rat using streptozotocin and to examine the preventive effect of treadmill exercise on the diabetic rat before and after streptozotocin injection. Intraperitoneal injection of increasing amount of streptozotocin up to 40 mg/kg dose-responsively induce hyperglycemic diabetic rat and inversely reduced the blood insulin level. Body weight was also gradually reduced with the increasing amount of streptozotocin. Control and diabetic rats exercised for 4 weeks before streptozotocin injection. The exercise was performed in the treadmill for 25 minutes a day and 5 times a week with low intensity (0 degree tilt, 15 m/min velocity). Following streptozotocin injection, the blood glucose level was measured every week and the rat was sacrificed after 4 weeks to measure the concentration of insulin and blood lipids. The blood levels of glucose and insulin was significantly reduced with exercise before streptozotocin injection, while those were not changed after streptozotocin injection. The levels of blood lipids such as total cholesterol, HDL-cholesterol, LDL-cholesterol and triglyceride were close to normal control rats. From this study, researchers found the optimal condition of preparation of streptozotocin-induced hyperglycemic diabetic rat, and the mild treadmill exercise has beneficial effect on preventing hyperglycemia and hyperlipidemia. Thus, even low intensive running prevent not only diabetes but also diabetic vascular complications.

고등학교 태권도선수의 단기간 체중감량이 신체조성과 혈증지질에 미치는 영향

백영호(Yeong Ho Baek),염종우(Jong Woo Yeom),예정복(Jung Bok Ye) 한국체육교육학회 2002 한국체육교육학회지 Vol.7 No.2

This study was conducted to investigate how the short-term weight loss had an effect on body composition and blood lipid in high school Taekwondo players. Sixteen subjects were divided into 2 groups selected by the intended sampling method : (a) 8 not lost and (b) the other 8 lost more than 5% in their weight. They had reduced above 5% in their weight for 6 days and compared with body composition assessment, blood test and change of body strength before and after weight loss. The conclusion of this study follows as below : 1. In the change of body composition before and after weight loss, there was more noticeable reduction in body weight, body water volume, muscle mass, LBM(lean body mass) and BMI(body mass index) of the group lost above 5% than the group not lost in their weight 2. There was no significant difference in both groups before and after weight loss in the change of blood lipid. But the group lost more than 5% in its weight presented the increase for T-C and TG levels and the decrease for HDL-C and LDL-C ratio. The results of this study indicate that the Taekwondo players short term weight loss more than 5% in their weight not only decrease lean body mass and physical performance by weak body strength but also has a bad influence on their health in the long term. Therefore both athletes and coaches should endeaver to conduct more scientific weight loss plan on the basis long term period.

고탄수화물식이와 고지방식이가 축구선수의 경기 전, 후 혈중지질 및 호르몬에 미치는 영향

백영호 ( Yeong Ho Baek ),염종우 ( Jong Woo Yeom ) 한국운동영양학회 2002 Physical Activity and Nutrition (Phys Act Nutr) Vol.6 No.2

The purpose of this study was to evaluate the effect of high carbohydrate diet and high fat diet on serum lipids and hormone of soccer player of before and after game. The subjects for this study were twenty-one K high school soccer players who were divided into three groups : a normal diet group (n = 7, NOD), high carbohydrate diet group (n = 7, HCD) and a high fat diet group (n = 7, HFD). They accomplished NOD(20% : 20% : 60%, 3,756 ㎉/day), HCD (15%: 10%: 75%, 3,765 ㎉/day) and HFD (20%: 40%: 40%, 3,776 ㎉/day) for three days before the game. The diet of experiment day in all groups was accomplished 2 h 30 min before the game, and warming-up was 30 min, match time first half 40 min, rest time 10 min and second half 40 min, After measured before and after the game, serum lipids and hormone were analysed. In conclusion, this study showed that the change of HDL-C, glucose, insulin and glucagon before and after game was influenced by diet composition, but the change of LDL-C was not influenced by diet composition. Though the increase and decrease of lipid in HCD tend to show pattern like the other diets, it is assumed that no meaningful difference among groups is related to the increase of glucose and the decrease of insuline.