Rome L C, Swank D, Corda D
Department of Biology, University of Pennsylvania, Philadelphia 19104.
Science. 1993 Jul 16;261(5119):340-3. doi: 10.1126/science.8332898.
It is thought that fish generate the power needed for steady swimming with their anterior musculature, whereas the posterior musculature only transmits forces to the tail and does negative work. Isolated red muscle bundles driven through the length changes and stimulation pattern that muscles normally undergo during steady swimming showed the opposite pattern. Most of the power for swimming came from muscle in the posterior region of the fish, and relatively little came from the anterior musculature. In addition, the contractile properties of the muscle along the length of the fish are significantly adapted to enhance power generation.
据认为，鱼类利用其前部肌肉产生稳定游泳所需的动力，而后部肌肉仅将力量传递到尾部并做负功。通过使分离的红色肌束经历肌肉在稳定游泳时通常会经历的长度变化和刺激模式来驱动，结果显示出相反的模式。鱼类游泳的大部分动力来自鱼体后部的肌肉，而来自前部肌肉的动力相对较少。此外，鱼体全长肌肉的收缩特性显著适应于增强动力产生。
