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Fig. 1 | BMC Geriatrics

Fig. 1

From: Evaluation of rehabilitation exercise effects by using gradation-based skeletal muscle echo intensity in older individuals: a one-group before-and-after trial study

Fig. 1

Representative ultrasound images in anterior, lateral, and posterior regions. A and D are the anterior, B and E are the lateral, and C and F are the posterior regions. Surface muscles (rectus femoris from A, vastus lateralis from B and biceps femoris from C) are traced using dotted lines in D, E, and F. Muscle echo intensities, and cross-sectional areas (CSAs) are measured from the dotted-line tracked region. Arrows show the thickness of the subcutaneous fat and muscle. G, H, and I is histograms of the ROI’s pixel intensity from rectus femoris (G), vastus lateralis (H) and biceps femoris (I). SF-A, subcutaneous fat thickness of the anterior region; RF, rectus femoris; VI-A, vastus intermedius of the anterior region; SF-L, subcutaneous fat thickness of the lateral region; VL, vastus lateralis; VI-L, vastus intermedius of the lateral region; SF-P, subcutaneous fat thickness of the posterior region; BF, biceps femoris. White bars are 1 cm in scale

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