Reliability of Calf Bioelectrical Impedance Spectroscopy and Magnetic-Resonance-Imaging-Acquired Skeletal Muscle Hydration Measures in Healthy People

Table 6

Coefficient of variability of cBIS and MRI-acquired measures of hydration at time one and two.

	𝑇2-1	𝑇2-2	ADC-1	ADC-2
Tibialis anterior	4.2	4.5	6.5	6.1
Lateral gastrocnemius	9.0	8.4	7.2	7.6
Medial gastrocnemius	10.0	10.0	5.4	5.2
Soleus	8.1	8.2	6.5	7.2
	T1		T2
cBIS
ECF	14.6		15.3
ICF	24.9		26.0
TW	20.7		22.6
Ratio (ECF : ICF)	24.9		25.6

ADC: apparent diffusion coefficient; cBIS: calf bioelectrical impedance spectroscopy; ECF: extracellular fluid; ICF: intracellular fluid; T1: occasion 1; T2: occasion 2; 𝑇₂: transverse relaxation times; TW: total water.