Muscle Nerve. 2014 Jan;49(1):108-19. doi: 10.1002/mus.23884.
Modulation of muscle characteristics was attempted through altering muscle stretch during resistance training. We hypothesized that stretch would enhance muscle responses.
Participants trained for 8 weeks, loading the quadriceps in a shortened (SL, 0-50° knee flexion; n=10) or lengthened (LL, 40-90°; n=11) position, followed by 4 weeks of detraining. Controls (CON; n=10) were untrained. Quadriceps strength, vastus lateralis architecture, anatomical cross-sectional area (aCSA), and serum insulin-like growth factor-1 (IGF-1) were measured at weeks 0, 8, 10, and 12.
Increases in fascicle length (29±4% vs. 14±4%), distal aCSA (53±12% vs. 18±8%), strength (26±6% vs. 7±3%), and IGF-1 (31±6% vs. 7±6%) were greater in LL compared with SL muscles (P<0.05). No changes occurred in CON. Detraining decrements in strength and aCSA were greater in SL than LL muscles (P<0.05).
Enhanced muscle in vivo (and somewhat IGF-1) adaptations to resistance training are concurrent with muscle stretch, which warrants its inclusion within training.
通过改变抗阻训练中肌肉的拉伸来调节肌肉特性。我们假设拉伸会增强肌肉反应。
参与者接受 8 周的训练，在缩短（SL，0-50°膝关节屈曲；n=10）或延长（LL，40-90°；n=11）位置加载股四头肌，然后进行 4 周的脱训。对照组（CON；n=10）未接受训练。在第 0、8、10 和 12 周时测量股四头肌力量、股外侧肌结构、解剖横截面积（aCSA）和血清胰岛素样生长因子-1（IGF-1）。
与 SL 肌肉相比，LL 肌肉的肌纤维长度增加（29±4% vs. 14±4%）、远端 aCSA（53±12% vs. 18±8%）、力量（26±6% vs. 7±3%）和 IGF-1（31±6% vs. 7±6%）增加更大（P<0.05）。CON 中没有发生变化。SL 肌肉的力量和 aCSA 的脱训下降大于 LL 肌肉（P<0.05）。
与阻力训练相关的肌肉在体内（和某些 IGF-1）适应性增强与肌肉拉伸同时发生，这使其成为训练的一部分是合理的。
Zotero 插件