Fig. 1

Ultrasonography was used to measure thigh muscle thickness. The locations of measurement were the depth of the right quadriceps muscle at one-third and one-half of the total distance from the top of the patella to the iliac crest (A). The depth of the right quadricps muscle composed of the rectus femoris and vastus intermedius (B). Two readings were obtained for each point: a compression reading and a feather weight reading. Abbreviation: RF, rectus femoris; VI, vastus intermedius