Koller R, Girsch W, Huber L, Rab M, Stöhr H G, Schima H, Losert U M, Thoma H, Wolner E
Second Surgical Clinic, University of Vienna, Austria.
Artif Organs. 1994 Jul;18(7):523-8. doi: 10.1111/j.1525-1594.1994.tb03371.x.
This study was undertaken to survey the changes in force and fatigue of the latissimus dorsi muscle during transformation into a fatigue-resistant muscle by indirect or nervous multichannel stimulation. In sheep, a silicone chamber connected to a pressure-transducing system was implanted under the left latissimus dorsi muscle. Muscle conditioning was performed by multichannel (carousel) stimulation of the thoracodorsal nerve. The program was started with active periods of 10 min/h producing 10 tetanic contractions/min. It was increased until 70 contractions/min could be performed during 24 h. The changes of muscle force and fatigue were monitored by the silicone balloon system. After a mean period of 22 weeks, fatigue resistance was reached. The fatigue-resistant muscle was able to produce a pressure of about 100 mm Hg in the balloon. After finishing the conditioning procedure, muscle forces and the fatigue resistance of the conditioned muscle were evaluated. The conditioned muscle showed only a minimal decrease of force during 20 min. Under a preload of 20 N, it exhibited a maximum tetanic tension of 95 N.
本研究旨在通过间接或多通道神经刺激将背阔肌转化为抗疲劳肌肉的过程中，观察其力量和疲劳程度的变化。在绵羊身上，将一个与压力传感系统相连的硅胶腔植入左侧背阔肌下方。通过对胸背神经进行多通道（旋转木马式）刺激来进行肌肉训练。训练程序开始时，活动期为每小时10分钟，每分钟产生10次强直收缩。逐渐增加至在24小时内可进行每分钟70次收缩。通过硅胶球囊系统监测肌肉力量和疲劳程度的变化。平均22周后，达到了抗疲劳能力。抗疲劳肌肉能够在球囊中产生约100毫米汞柱的压力。完成训练程序后，评估训练后肌肉的力量和抗疲劳能力。训练后的肌肉在20分钟内力量仅出现极小程度的下降。在20牛的预负荷下，其最大强直张力为95牛。
