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Table 1 The muscle parameter values used in this study. The values for each muscle are shown. Fmax: maximal isometric force of the contractile element. LCEopt: optimal length of the contractile element. αpen: pennation angle. Lslack: slack (unloaded) length of the series elastic element. ILIOP: m. iliopsoas. GMAXI: m. gluteus maximus. GMEDI: m. gluteus medius. GMIN: m. gluteus minimus. ADDLO: m. adductor longus. ADDMA: m. adductor magnus. ADDBR: m. adductor brevis. HEXRO: merged hip external rotator muscles. RECTF: m. rectus femoris. HAMST: merged hamstrings. VASTI: mm. vasti. BFESH: m. biceps femoris short head. GASTR: m. gastrocnemius. TIBAN: m. tibialis anterior. SOLEU: m. soleus. OPFLE: merged monoarticular planter flexor muscles other than m. soleus. All of these muscles were implemented in the "All Muscles" model. Muscles whose primary function is leg extension are noted as "Extensor". Only these muscles were implemented in the "Extensors Only" model.

From: Contribution of non-extensor muscles of the leg to maximal-effort countermovement jumping

  Fmax (N) LCEopt (m) αpen (deg) Lslack (m)  
ILIOP 1544 0.104 8 0.130  
GMAXI 1883 0.142 5 0.125 Extensor
GMEDI 1966 0.054 8 0.078  
GMINI 849 0.038 1 0.051  
ADDLO 716 0.138 6 0.110  
ADDMA 1916 0.087 5 0.060  
ADDBR 531 0.133 0 0.020  
HEXRO 1512 0.054 0 0.024  
RECTF 1353 0.084 5 0.432 Extensor
HAMST 3054 0.080 15 0.359 Extensor
VASTI 6718 0.087 3 0.315 Extensor
BFESH 256 0.173 23 0.100  
GASTR 2044 0.045 17 0.408 Extensor
TIBAN 532 0.098 5 0.223  
SOLEU 5881 0.030 25 0.268 Extensor
OPFLE 3137 0.031 12 0.310 Extensor