Fig. 2

Mean pennation angle, fascicle length and physiological cross-sectional area (PCSA) of biceps femoris long (BFlh) and short head (BFsh), semimembranosus (SM) and semitendinosus (ST). Data were obtained from Kellis et al. [42], Wickiewicz et al. [44], Friedrich and Brand ^[45] and Ward et al., [43] from a total of 34 specimens (13 females, 12 males and 3 of unspecified Sex, age 62.7 years, body mass 77.56 kg and height 171.67). Error bars indicate standard deviation and black color circles represent mean values reported by each study