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Table 8.

Scaling relationship of fiber length to muscle length ratio(Lf/Lm ratio) and body mass for mouse,rat, cat, human and horse hindlimb muscles

MusclebaR2
AddL –0.06 0.004 0.95* 
RF –0.06 –0.33 0.51 
VL –0.05 –0.20 0.27 
VM –0.08 –0.14 0.53 
VI –0.05 –0.28 0.40 
GR –0.06 0.08 0.54 
BF –0.03 –0.14 0.12 
ST 0.00 –0.13 0.00 
SM –0.09 0.08 0.48 
GLH –0.08 –0.21 0.83* 
GMH –0.10 –0.19 0.86* 
SOL –0.17 0.17 0.73 
PLA 0.03 –0.57 0.07 
TP –0.12 –0.25 0.60 
FDL –0.11 –0.27 0.85* 
FHL –0.08 –0.31 0.35 
TA –0.16 –0.13 0.79* 
EDL –0.08 –0.16 0.84* 
All muscles –0.07±0.01   
Proximal muscles –0.05±0.01   
Distal muscles –0.10±0.02   
Plantarflexors –0.09±0.02   
Dorsiflexors –0.12±0.04   
Hamstrings –0.04±0.03   
Quadriceps –0.06±0.01   
MusclebaR2
AddL –0.06 0.004 0.95* 
RF –0.06 –0.33 0.51 
VL –0.05 –0.20 0.27 
VM –0.08 –0.14 0.53 
VI –0.05 –0.28 0.40 
GR –0.06 0.08 0.54 
BF –0.03 –0.14 0.12 
ST 0.00 –0.13 0.00 
SM –0.09 0.08 0.48 
GLH –0.08 –0.21 0.83* 
GMH –0.10 –0.19 0.86* 
SOL –0.17 0.17 0.73 
PLA 0.03 –0.57 0.07 
TP –0.12 –0.25 0.60 
FDL –0.11 –0.27 0.85* 
FHL –0.08 –0.31 0.35 
TA –0.16 –0.13 0.79* 
EDL –0.08 –0.16 0.84* 
All muscles –0.07±0.01   
Proximal muscles –0.05±0.01   
Distal muscles –0.10±0.02   
Plantarflexors –0.09±0.02   
Dorsiflexors –0.12±0.04   
Hamstrings –0.04±0.03   
Quadriceps –0.06±0.01   

Scaling equation is in the form y=aMb where Mis body mass. R2 is shown for the line describing the relationship between log-transformed variables. Scaling exponents for muscle groups are shown (mean ± s.e.m.)

For muscle names see text

*

P<0.05

0.05<P<0.13

Horse not included in muscle data set

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