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하지 중량부하 걷기 운동이 비만 청소년의 신체조성에 미치는 영향
김효찬 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4
The purpose of this study is to know about the influence of the lower limbs-weight walking exercise on body composition in obese youth For this study, 35 obese students were selected who volunteered in an attempt this case study from D high school in Incheon city and they are all have more than 25% of BMI(㎏/㎡). These students are randomly classified to 3 groups as like; 1) Group with 12 members who they dont exercise at all, 2) Group with 11 members who they do walking exercise, 3) Group with 12 members who they do lower limbs-weight walking exercise. For examine closely into the lower limbs-weight walking exercise, took an accurate measurement of body composition after taking 12 weeks treadmill exercise. To verify of the average values difference before and after walking exercise, I did Paired t-test. And, used One-way ANOVA for whether or not these 3 groups difference. Here are the results from this case study. (1) There is a difference between all groups with the weight from 12 weeks exercise, but no difference with the weight of 2 walking exercise groups. (2) There is no difference after 12 weeks exercise with the body at between the groups, there is more decline of the lower limbs-weight walking exercise group than others. (3) There is no difference between 3 groups with the body at before exercising, however, slight difference can be shown after 12 weeks exercise. Arid, there is more decline founded of the lower limbs-weight walking exercise group than other groups. (4) There is no difference between 3 groups with the breast at before exercise, but after 12 weeks exercise, slight difference can be founded. And, there is more decline founded of the lower limbs-weight walking exercise group than others. (5) There is no difference between groups with the abdomen at before exercising, however, there is a slight difference after 12 weeks exercise. There is more decline founded of the lower limbs-weight walking exercise group. (6) There is a difference between all groups with the thigh fat. However, it can be more declined of the lower limbs-weight walking exercise group than other groups.
하지 중량부하 걷기 운동이 비만 청소년의 혈액성분에 미치는 영향
김효찬 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5
The purpose of this study is to know about the influence of the lower limbs-weight walking exercise on body composition in obese youth For this study, 35 obese students were selected who volunteered in an attempt this case study from D high school in Incheon city and they are all have more than 25% of BMl(kg/m²). These students are randomly classified to 3 groups as like; 1) Group with 12 members who they dont exercise at all, 2) Group with 11 members who they do walking exercise, 3) Group with 12 members who they do lower limbs-weight walking exercise. For examine closely into the lower limbs-weight walking exercise, took an accurate. measurement of Blood Components Level after taking 12. weeks treadmill exercise. To verify of the average values difference before and after walking exercise, I did Paired t-test. And, used One-way ANOVA for whether or not these 3 groups difference. Here are the results from this case study. (1) Before and after 12 weeks exercising, there is no difference between all groups with TG, but there is more decline founded of the lower limbs-weight walking exercise group than others. (2) No difference between all groups with TC before exercising, however, there is a difference after 12. weeks exercise. And, there is more decline founded of the lower limbs-weight walking exercise than other groups. (3) There is no difference between 3 groups with LDL-C, but there is a difference after 12 weeks exercise. There is more decline founded of the lower limbs-weight walking exercise than other groups. (4) No difference with HDL-C between groups, but there is a difference after 12 weeks exercise. There is more decline founded of the lower limbs-weight walking exercise than others.
Implementation of Effective-Stress-Function Algorithm for Nuclear Fuel Performance Code
김효찬,양용식,구양현 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
To simulate thermo-mechanical behavior of nuclear fuel during off-normal operation, efficient finite element (FE) algorithm should be required due to multiphysics and nonlinear calculations. In this paper, an efficient FE module for nonlinear calculation has been developed using effective-stress-function (ESF) algorithm. The ESF algorithm can acquire stable and accurate computations for thermo-elasto-plasticity and creep as it deals with only one variable, effective stress. To verify the developed ESF module, test cases similar to fuel behavior were established. Verifications of the module for thermal, mechanical, and coupled cases were performed in comparison with the results of ANSYS 13.0. To demonstrate the stability and convergence of the implemented algorithm, the number of iterations in the ESF algorithm was compared with that in a sequential algorithm in the case of an inelastic problem. Consequently, this demonstrates that the implemented ESF algorithm improves the efficiency of the computation without a loss of accuracy for an inelastic analysis.
시각적 심상훈련이 볼링선수의 시합전 상태불안과 경기력에 미치는 영향
김효찬 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5
This research aimed to examine the influence of implement and psychological instability prior to the match as well as the change in toss as caused by the visual image training program for the technical improvement of the toss among college bowlers. Specifically, the standard deviation and average of toss, status instability, and conditions have been calculated, Likewise, a t-test has been carried out on each measurement factor to analyze the difference between pre and post game. Results yielded several conclusions, For one, there was a noticeable difference in effects between the groups that received synchronous visual image training and the group that received only physical training. In addition, there was a noticeable difference in the cognitive instability prior to the game between the groups that received synchronous visual image training and the group that received only physical training. Likewise, there was a noticeable difference in the effect of bowling practice between the groups that received synchronous visual image training and the group that received only physical training. However, no changes were noted in the control group, There was also no difference in groups as well in terms of (bowling) performance.