A method of an electrical measurement, the method comprising:
- providing a measurement system comprising a first clamp electrode apparatus, the first clamp electrode apparatus comprising:
- a first clamp comprising a first upper clamp body and a first lower clamp body operably connected to each other such that the first upper and lower clamp bodies are movable relative to each other for clamping a first portion of a first limb of a subject between the first upper and lower clamp bodies,
- a second clamp comprising a second upper clamp body and a second lower clamp body operably connected to each other such that the second upper and lower clamp bodies are movable relative to each other for clamping a second portion of the first limb adjacent the first portion between the second upper and lower clamp bodies,
- the first and second clamps mechanically connected to form a single integrated device and arranged side by side such that a first edge of the first upper clamp body faces a second edge of the second upper clamp body and an opening or channel is defined between the first edge and the second edge,
- a first electrode disposed on an inner surface of the first upper clamp body and configured to contact a first area of the first limb when the first limb is clamped with both the first and second clamps, and
- a second electrode electrically independent of the first electrode and disposed on an inner surface of the second upper clamp body and configured to contact a second area of the first limb other than the first area when the first limb is clamped with both the first and second clamps;
- clamping the first limb of the subject with the first clamp electrode apparatus:
- such that an ulnar head or malleolus of the first limb is positioned within the opening or channel of the first clamp electrode apparatus while contacting both the first edge and the second edge of the first clamp electrode apparatus for the first edge and the second edge to restrict a movement of the first clamp electrode apparatus along a longitudinal direction of the first limb,
- such that the first electrode disposed on the inner surface of the first upper clamp body contacts the first area of the first limb and is spaced apart in the longitudinal direction of the first limb from an imaginary line that is perpendicular to the longitudinal direction of the first limb and passes the ulnar head or malleolus of the first limb,
- such that the second electrode disposed on the inner surface of the second upper clamp body contacts the second area of the first limb and is spaced apart in the longitudinal direction of the first limb from the imaginary line that is perpendicular to the longitudinal direction of the first limb and passes the ulnar head or malleolus of the first limb, and
- further such that the first and second electrodes contact first and second areas of the first limb;
- and
- conducting a first impedance measurement of the subject using the first electrode and the second electrode and one or more additional electrodes that contact the subject.