Earticle

The purpose of this study was to investigate the effects of different weight reduction methods on the body composition characteristics, cardiopulmonary functions, and health promotion of elite bodybuilding athletes in a comprehensive manner. For this purpose, the study ana-lyzed the effects of two different weight reduction methods on 25 elite bodybuilding athletes registered at the Bodybuilding Association over a period of 6 weeks. There were interactive effects on macronutrients, macrominerals, and antioxidants according to weight reduction meth-ods as the experiment group (6%±2%) maintained a certain amount of food intakes across various nutrients including energy intakes or made a slow decrease it, whereas the traditional group (16%±4%) made a sharp decrease in it due to relatively greater weight reduction than the experiment group and thus showed pattern differences from it. As for immunity variables, there was an increase to certain cytokines despite the traditional high weight reduction method, but it caused no exces-sive reduction of immunity or rapid decrease to certain factors of body composition. In addition, there were no significant differences in main and interactive effects on the one-repetition maximum of bench press and squat, which are two functional indicators of health promotion. These findings imply that the low weight reduction method within the range of 6%±2% minimized or maintained changes to muscle circum-ference or mass while causing no improvement to muscular strength.

본 연구는 보디빌더를 대상으로 고강도 저항훈련을 실시하여 근 성장관련호르몬, 염증성사이토카인 및 등속성 근력에 어떠한 영향을 미치는지 알아보는데 목적이 있다. 연구대상자는 남성보디빌더 25명을 대상으로 휴식-정지집 단 8명, 자이언트집단 9명, 어센딩집단 8명으로 구분하여, 주 6회, 총 12주간 훈련을 실시하였다. 자료처리는 SPSS 19.0 프로그램을 이용하여 공변량 분석을 실시하였다. 연구결과 어센딩 세트가 휴식-정지 및 자이언트세트 훈련법에 비해 근 성장 관련호르몬 분비에 효과적으로 나타났다. 염증성 사이토카인은 자이언트훈련법이 효과적인 방법으로 나 타났으며, 특히 IL-6의 변화에 효과적인 것으로 나타났다. 슬관절 등속성 근력은 세 집단 모두 유의하게 증가되었지만, 집단 간 유의차는 없었다. 신체구성 중 체지방률은 세 집단 모두 유의한 감소되었고, 어센딩 집단이 휴식-정지 집단과 자이언트 집단보다 유의한 감소를 나타내었다. 고강도 저항훈련이라 할지라도 훈련의 구성방법에 따라 다양한 변화가 나타날 가능성이 있는 것으로 나타났다. 하지만, 본 연구결과를 일반화시키기 위해서는 다양한 변인이 추가된 지속적 연구가 이루어져야 할 것으로 생각된다.

The purpose of this study is to find the effects of High-Intensity Resistance Training on Muscle Growth Related Hormones, Inflammatory cytokines and Isokinetic Strength in body builders. The 25 participants were divided into rest pause set group(RPG) of 8, giant set group(GIG) of 9, and ascending set group(ASG) of 8 and they conducted assigned training 6 times a week for 12 weeks. Analysis of ANCOVA was done using SPSS 19.0 for data processing. The result of this study shows conducting ascending set is more effective than rest pause and giant on Muscle Growth Related Hormone secretion. Giant set training is effective on Isokinetic Strength, especially IL-6. Knee joint isokinectic muscle strength showed significant increase in all groups, but no significant difference among groups. Percentage body fat of body composition significantly decreased in all of 3 groups, and ASG showed more significant decrease than RPG and GIG. It is shown that even High-Intensity Resistance Training could have various change depending on training composition. However, further study will be needed adding various variables to generalize the result of this study.

Exertional compartment syndrome is an activity-related condition, often affecting young active persons. Clinical signs include the musculature pain that worsens with activity. The pathophysiology is somewhat unclear, but a temporary relative limb ischemia appears to be involved. The limb ischemia induces swelling and results in increased intracompartmental pressure. In general, chronic exertional compartment syndrome cases are diagnosed mostly in lower legs, and rarely in upper arms. So it is reported that the authors experienced a case of the superficial radial nerve injury following chronic exertional compartment syndrome of the forearm in a professional bodybuilder.