Lee Jun-Soo, Yoon Eun-Sun, Jung Sun-Young, Yim Ki-Tae, Kim Dae-Young
Institute of Digital Anti-Aging Healthcare, Inje University, Gimhae, Korea.
Department of Sports for All, Korea National Open University, Seoul, Korea.
J Exerc Rehabil. 2021 Jun 30;17(3):207-213. doi: 10.12965/jer.2142260.130. eCollection 2021 Jun.
The recently discovered myokines, irisin and fibroblast growth factor-21, have emerged beneficial for metabolic health due to their role in regulating browning. This study examined the effects of high-intensity circuit training on obesity indices, physical fitness, and irisin and fibroblast growth factor-21 levels in inactive female college students. Ten female college students performed high-intensity circuit training (jogging, stretching, squat jumps, arm walking and push-ups, lunge jumps, burpee test, mountain climbers, side steps, and crunches and side crunches exercises). The exercise program consisted of 40 min of circuit training at 60%-80% hear rate reserve and was conducted 3 times per week for 4 weeks. The body composition, physical fitness, and concentration of plasma irisin and fibroblast growth factor-21 were analyzed before and after the exercise. The body weight (=0.001), waist circumference (=0.003), and body fat percentage (=0.003) decreased, while the muscular strength (handgrip strength test, =0.030; sit-ups test, =0.024) and cardiorespiratory fitness (=0.001) increased after the exercise program. However, there were no significant changes in the irisin and fibroblast growth factor-21 levels. These results suggest that high-intensity circuit training could be the ideal type of exercise in inactive female college students to induce a positive change in the obesity indices and physical fitness. Further studies are needed to determine the effects of exercise on the browning factors.
最近发现的肌动蛋白、鸢尾素和成纤维细胞生长因子-21，因其在调节褐色脂肪形成中的作用，已被证明对代谢健康有益。本研究调查了高强度循环训练对缺乏运动的女大学生肥胖指数、身体素质以及鸢尾素和成纤维细胞生长因子-21水平的影响。十名女大学生进行了高强度循环训练（慢跑、伸展、深蹲跳、手臂行走、俯卧撑、弓步跳、波比测试、登山跑、侧步走、仰卧起坐和侧卷腹练习）。该训练计划包括以心率储备的60%-80%进行40分钟的循环训练，每周进行3次，共4周。在训练前后分析身体成分、身体素质以及血浆鸢尾素和成纤维细胞生长因子-21的浓度。训练后，体重（=0.001）、腰围（=0.003）和体脂百分比（=0.003）下降，而肌肉力量（握力测试，=0.030；仰卧起坐测试，=0.024）和心肺功能（=0.001）增加。然而，鸢尾素和成纤维细胞生长因子-21水平没有显著变化。这些结果表明，高强度循环训练可能是缺乏运动的女大学生理想的运动类型，可促使肥胖指数和身体素质产生积极变化。需要进一步研究来确定运动对褐色脂肪形成因子的影响。
