레지스탕스 트레이닝에서 고속도 운동이 근횡단 면적 및 운동속도에 미치는 영향

이신언,조규상,한권상 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

A conducted to determine 1) the effect of high-velocity mowement in resistance training with a constant load on the velocity of movement after training and 2) the differences in the effect on muscle hypertrophy according to training velocity. Fourteen of the total subjects (male ; n=10, female ; n=7) were placed in the experimental group and agreed to participate in 8 weeks of training sessions(4 times a week). Five of the 17 subjects were in control a group before the training session. Subjects perfrmed elbow extension and flexion exercise using 50% of one repetitions and 30s of rest was taken between the sets. The subjects in the experimental group trained their arms using two different protocols ; one was high-velocity movement performed as rapidly as possibl(Type R), the other was low-velocity movement performed at a constant and slow velocity(Type R), the other was low-velocity movement performed at a constant and slow velocity(Type R), the other was low-velocity movement performed at a constant and slow velocity(Type S). Isokinetic torque in elbow flexion was measured at angular velocities of 60, 180, 300 deg/s, respectively, during elbow flexion performed under different constant loads of 0, 30, 50% 1 RM, and the muscle cross-sectional area(CSA) of the elbow flexor was determined before and after training. It was found that Type R did not increased isokinetic torque at 300 deg/s significantly after training. However, the increase in angular velocity of elbow flexion in Type R exercise tended to be higher than in Type S exercise. The increased in CSA [Type S ; 11.2%, Type R ; 14.2%] was significantly higher in Type R exercise(p<.05). These results suggest that high-velocity movement with a constant load in resistance training might increase the angular velocity of movement in the same mode, but might not produce a change in isokinetic strength, which involves a different mode of muscle contraction. Muscle hypertrophy would be induced to a greater extent by. high-velocity movement than by low-velocity movement in resistance training with a constant load.

여자 단거리선수의 경기수준에 따른 생리학적 특성 분석

이신언,김한수,유덕수 한국스포츠리서치 2006 한국 스포츠 리서치 Vol.17 No.3

지구성 트레이닝이 하대정맥 횡단면적에 미치는 영향

이신언,주희철,윤찬호 한국스포츠리서치 2001 한국 스포츠 리서치 Vol.12 No.4

6주간 지구적 트레이닝에 의한 대정맥에 있어서 횡단면적의 증가와 같은 형태적 적응이 유발된다는 사실이 명백히 밝혀졌다. 그리고 이러한 지구적 트레이닝에 따른 대정맥 횡단면적의 증가율은 대동맥의 증가율보다 컸다. 이러한 지구적 트레이닝에 대한 대정맥형태의 적응은 운동중의 활동근과 심장사이에서의 혈액환류를 효율화하고 전신지구력의 향상에도 부분적으로 기여하는 것으로 생각된다. A study was conducted to determine non-invasively the effects of endurance training on the size of the inferior vena cava in humans. Twelve healthy male subjects were assigned to either and exercise-trained group(ET, n=14) or a sedentary control group(S, n=10). The ET group underwent cycle-endurance training for 8 weeks(80% Vo2max, 40min/day, 4days/week). The S group led normal lives during the 8-week period. Before and after the training period, cross-sectional areas(CSA) of the inferior vena cava and the ascending and abdominal aorta were measured by echography. The CSA of the inferior vena cava after training was no significant difference in the S group. hese results indicate that the inferior vena cava can be morphologically altered as an adaptive response to endurance training. We consider that this adaptation partly contributes to the improvement in the efficiency of venous the aorta, the degree of change was smaller than that seen in the inferior vena cava, implying that the factors of adaptation and adaptability to endurance training in the inferior vena differ from those in the aorta.

지구운동 후의 식사조성이 근중성지방과 지구운동의 성과에 미치는 효과

이신언,오이표,김한수 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5

This study was carried out for the purpose of examining the effect of eating on muscular neutral fat and outcome of persistent exercise. Seven men who were taking persistent training had 2 hours of cyclying exercise at an intensity of 65%VO₂max, Thereafter the examinees took meals containing high level of sugars and fats and then carried out 1600kJ by self pace after fasting 12 hours. In the Performance taken 2 hours before starting cycling training (33.0+/- 2.3 vs. 37.0 +/- 2.1mmol/㎏ dry weight ) and in the Performance taken thereafter (30.9+/- 2.4 vs. 32.8+/- 1.6 mmol/㎏ weight) there was no difference in muscular neutral fat. However eating more fatty food showed higher value of muscular neutral fat prior to 2nd self paced exercise in comparison with taking more sugary food. (44.7+/- 2.4 vs. 27.5+/- 2.1 mmol/㎏ dry weight). In terms of outcome of self-paced cycling training Performance where highly fatty food was taken showed significant decline, This outcome did not show any significant change in muscular neutral fat before and after cycling training of medium level intensity but it was observed that absorption of highly fatty food heightened accumulation of muscular neutral fat rather than taking highly sugary food.

고령자의 근력 및 전신이동능력과 일상생활의 주관적인 활동능력과의 관련성 분석

이신언,조병섭,한권상 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

The purpose of this study were (1) to determine the changes in functional fitness with aging, and (2) to assess the relationship of muscular strength and locomotion ability with subjective functional fitness. The subjects were 479 Korean women(65+ years) living in Seoul, Taegu, and Jinju cities. Korea. The average age was 72.0±4.8. Thirteen objective functional fitness items and 11 subjective functional fitness questionnaire items associated with their daily living were measured. Results of data analysis indicated that the muscular strength and locomotion ability decreased considerably with aging. The relationship between the objective functional fitness and the subjective functional fitness was significant in 10 items. It is suggested that maintenance and promotion of muscular strength and locomotion ability may be important in order to raise the level of independence in daily living of older Korean women.

강제운동과 수면방해의 편성이 쥐에 미치는 영향

이신언,임정일,육조영 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.1

「코칭관리」개념분석

이신언,윤호상,육조영 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The ward 'coaching' means actions of coaches. But the word 'coaching' is weasel, and the meaning of this word is differentiated. This view about the differentiation of the meaning is based on following reasons : 1. Many scholars in America referred to the coaching as teaching in their studies on physical education or coaching. This means that 'coaching' is identified with 'teaching' , or 'coaching' includes 'teaching' , That is to say, the meaning of 'coaching' is differentiated to athletic leadings and educational leadings; 2. The coach as the actor of coaching is demanded to play multiple roles. This word 'role' means expectant actions that ought to be done as the coaching position. However, by the word 'coaching' that means the actions of coaches, it can not mean every expectant action of coaches. The purpose of this study is to elucidate the concept of coaching For that purpose, this study tried to grasp the concept of coaching as a chain of actions that does not mean a passing phase in the action of coaches but a time series of the action toward some goals. So, this study brought in the concept of administration as a conceptual tool, and examined on the concept of coaching (administration). As the result of this study, the concept of coaching (administration) could be characterized as follows : 1. The concept of coaching (administration) means a certain process toward some goals, This process of coaching (administration) subsumes the administrative phase as policy making and the managerial phase as policy implementation The phase of policy making includes the stage of examination on goals themselves. 2. The concept of coaching (administration) means the manipulation of men by men about goals, and coaching (administration) must resolve the tension between the human concerns of individual team members and the overriding the winning as organizational purposes, so the process of coaching (administration) includes the stage of philosophy that quests human values.

근력 트레이닝에서의 주기구조에 관한 연구

이신언,임완기 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

The purpose of this study was to investigate the influence of length of training cycle("bulk-up type" and "power-up type") on the development of muscle cross-sectional area, muscle strength, anaerobic power and anaerobic endurance. Ten male college stedents were divided into a long term group(n=5) and a short term group(n=5). Both groups performed squat, lunge walk and leg curl exercise twice a week for 8 weeks, with the long term group performing 4 weeks of bulk-up type training followed by 4 weeks of power-up type training and the short term group performing alternating 2 week periods of bulk-up type and power-up type training. A comparison between the long term group and the short term group after eight weeks showed: (1) There was no difference between groups in CSA. (2) The long term group improvee in muscle strength at low speeds. (3) The short term group improved in muscle strength at high speed. (4) The long term group showed greater improvement in anaerobic endurance.

경부의 근력트레이닝과 탈 트레이닝이 경부근력에 미치는 영향

이신언,한권상 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

Effects of neck muscle training and their changes after discontinuation of training(detraining) were studied in 22 athletes (college American football playeres) and 19 non-athletes. The subjects underwent narrow grip shoulder shrug training using free weights(NGSS group). isometric training of the neck in pairs(PAIR group), or both types of training (COMB group) for 14 weeks, and were then detrained during the following 14 weeks. Extension and flexion muscle strength(maximum isometric muscle strength) of the neck were measured using a method in which subjects pulled a wire attached over the head in a sitting position at 2-week intervals after the start of training. The following results were obtained. 1. In the athletes. the flexion muscle strength increased by 16.9=5.6%(mean=standard deviation) in the COMB group and by 14.8=5.2% in the NGSS group. and the increases in these groups were significantly greater than the increase in the PAIR group(p<.01). The extension mus칟 strength also increased, most notably in the COMB group(12.2±4.7%). 2. In the non-athletes. the flexion muscle strength increased by 29.4±7.2% in the COMB group. and this increase was significantly greater than that in the PAIR group(p<.01). This increase was also significantly greater than that in the COMB group of the athletes(p<.01). The extension muscle strength increased by 1.1±5.2% in the COMB group. 3. In the athletes. the flexion muscle strength of the COMB group was increased by 8.3% after 14 weeks of training and 14 weeks of detraining as compared with that at the start of training. In the non-athletes. the flexion and extension muscle strength of the COMB group increased by 17.4% and 9.8%, respectively, after the start of training. These results suggest that narrow grip shoulder shrug training used for the development of muscle strength in the lower neck is effective for improving flexion as well as extension muscle strength. and that the decrease in muscle strength due to detraining can be reduced by combining this training with isometric training performed by the PAIR group.

바이애슬론 선수의 롤러스키와 인라인스케이트에 대한 생리적 응답 분석

이신언,최미진,이무연 한국스포츠리서치 2006 한국 스포츠 리서치 Vol.17 No.5