Fig. 1

Measurement of muscle thickness, Legend: A, Muscle thickness was measured at the lateral dominant forearm at 30% proximal of the distance between the styloid process and the distal insertion of the biceps brachii muscle into the radial tuberosity. The black mark indicates where the images should be captured. B, A 5 cm width, 7.5 MHz linear transducer was placed perpendicular to the length of the arm. C, The patient must be seated with the dominant arm resting on a standard table with shoulders flexed to 30-45º, elbow to 135º, and forearm in neutral position