... ° denotes muscle at L 0 and lengthening, and a complete strain cycle is 360 °), and the number of stimuli used was systematically altered at each cycle frequency until the conditions required for maximal power output were established. The muscle was subjected to four oscillatory work cycles per run...

... effects on muscle function: power output of isolated fish muscle fibres performing oscillatory work . J. exp. Biol . 151 , 453 – 467 . 10.1242/jeb.151.1.453 Archer , S. D. and Johnston , I. A. ( 1989 ). Kinematics of labriform and subcarangiform swimming in the antarctic fish...

... ). Modelling muscle power output in a swimming fish . J. exp. Biol . 148 , 395 – 402 . 10.1242/jeb.148.1.395 Altringham , J. D. and Johnston , I. A. ( 1990b ). Scaling effects on muscle function: power output of isolated fish muscle fibres performing oscillatory work . J. exp. Biol...

..., quadrupedal mammals [ Heglund et al . (1974) , Science 186 , 1112-1113), and the significance of this similarity is discussed. 3 1 1991 © 1991 by Company of Biologists 1991 diaphragm locomotion mechanics muscle oscillatory work power output scaling effects The size of any...

... frequency, although the peaks were rather broad. As the size of the fish increased the cycle frequency for maximum power output ( f opt ) decreased, from 12.5 Hz (13 cm fish) to 5 Hz (67 cm fish) ( f opt =1.67 L −0.52 , where L is body length). The power output of myotomal muscles during oscillatory work...

... is comparable to that of 34·5 Wkg −1 reported by Stevens (1988) , for frog sartorius muscle, performing oscillatory work at 2 Hz and 20°C. The forces measured under optimum conditions, when the active fibres are given a small stretch before the onset of shortening, are considerably higher than under...