Shin Seunghwan, Jee Hyunseok
Aerosp Med Hum Perform. 2019 Dec 1;90(12):1055-1060. doi: 10.3357/AMHP.5261.2019.
This study aimed to investigate the relationships among , body composition, fitness, and +G tolerance for senior cadet training development and their safe task performance. The subjects were all senior cadets ( = 68) at the Korea Air Force Academy. All cadets are required to pass a physical fitness test (3-km running, sit-ups, push-ups) and body composition test on a semiannual basis. Isokinetic muscle function (strength and endurance), +G test (+6 G ⋅ 30 s), and target gene () were analyzed. The effects of body composition and physical fitness along with the relationship of the genotype to the +6 G test results were determined. Consequently, no significant difference was found concerning the effect of on the +6 G test result, body composition, and physical fitness; however, body fat (%) and isokinetic muscle strength (peak torque right leg extension and left leg flexion) showed significance between the pass and failure groups in the +G test. The cadets of the Korea Air Force Academy showed dominant fast genetic expression type based on their genotype [RR and RX ( = 51, 75%) > XX ( = 17, 25%)]. Body fat (%) and isokinetic muscle strength (PT R EX, L FL) can be more effective predictors in the +6 G test for cadet training. Another speculation is that more RR- and RX-type-oriented training can promote cadets' G tolerance from the isokinetic factors such as high peak torque and low fatigue index.
本研究旨在探讨在高级学员训练发展及其安全任务执行中，[具体内容缺失]、身体成分、体能与 +G 耐力之间的关系。受试者为韩国空军军官学校的所有高级学员（n = 68）。所有学员都必须每半年通过一次体能测试（3 公里跑步、仰卧起坐、俯卧撑）和身体成分测试。分析了等速肌肉功能（力量和耐力）、+G 测试（+6G·30 秒）和目标基因（[具体基因缺失]）。确定了身体成分和体能的影响以及该基因基因型与 +6G 测试结果的关系。因此，在[具体基因缺失]对 +6G 测试结果、身体成分和体能的影响方面未发现显著差异；然而，在 +G 测试中，通过组和未通过组之间的体脂率（%）和等速肌肉力量（右腿伸展和左腿弯曲的峰值扭矩）存在显著差异。韩国空军军官学校的学员根据其[具体基因缺失]基因型表现出显性快速基因表达类型[RR 和 RX（n = 51，75%）> XX（n = 17，25%）]。体脂率（%）和等速肌肉力量（PT R EX，L FL）在学员训练的 +6G 测试中可能是更有效的预测指标。另一种推测是，更多以 RR 型和 RX 型为导向的训练可以从等速因素（如高峰值扭矩和低疲劳指数）促进学员的 G 耐力。
