Table 2.

K^trans (min⁻¹) and calculated perfusion (ml/100g/min) values for resting and exercised muscles.

	Rest				Exercise
Muscle	Ktrans (min−1)	variation across subjects (std, min−1)	Perfusion (ml/100g/min)	variation across subjects (std, ml/100g/min)	Ktrans (min−1)	variation across subjects (std, min−1)	Perfusion (ml/100g/min)	variation across subjects (std, ml/100g/min)
Tibialis Anterior	0.14±0.01	0.13	22±1	21	0.29±0.02	0.24	46±3	38
Gastroc-nemius	0.15±0.01	0.14	23±2	19	0.27±0.02	0.16	43±3	25
Soleus	0.19±0.01	0.14	30±2	22	0.34±0.02	0.15	54±3	24

K^trans (min⁻¹) mean measurement error: from simulation evaluating noise propagation in the images. Variation across subjects: standard deviation in the measured parameter across the 10 subjects.