Table 2.

First-order grey-scale statistics of m. vastus lateralis. M. vastus lateralis for n = 9 healthy participants. Average values, (range), and [quartiles] are used for the average value of the 9 participants, whereas the mean, the variance, the skewness, the kurtosis, and the median are used to describe the distribution of the pixels in the individual ROI-images.

Grey-scale variables	Longitudinal scans					Transversal scans
	Middle	Proximal	Distal	Medial	Lateral	Middle	Proximal	Distal	Medial	Lateral
Mean	52.1	53.0	51.1	52.3	53.6	50.6	52.4	52.9	53.1	52.3
	(39.1–68.2)	(42.0–61.9)	(39.0–61.4)	(37.9–61.1)	(41.1–65.5)	(42.7–57.2)	(42.4–58.5)	(38.5–66.2)	(38.9–69.7)	(39.4-64.2)
	[42.7–60.5]	[44.6–59.9]	[42.9–57.6]	[45.2–58.7]	[44.1–60.5]	[45.5–54.7]	[48.6–57.5]	[46.7–57.5]	[46.2–60.1]	[46.6–60.3]
Variance	381.6	410.4	403.7	414.4	399.1	403.4	418.0	396.8	394.8	397.7
	(299.3–513.5)	(331.7–503.2)	(3227–487.0)	(314.6–543.2)	(294.7–566.9)	(361.0–473.3)	(327.3–480.5)	(320.6–501.1)	(330.7–486.2)	(301.7–521.0)
	[326.3–400.8]	[363.5–453.4]	[358.2–447.3]	[366.9–456.8]	[350.8–438.5]	[366.4–435.5]	[393.6–456.4]	[368.8–425.1]	[360.7–424.5]	[326.8–460.2]
Skewness	0.7	0.7	0.8	0.8	0.6	0.9	0.8	0.7	0.7	0.8
	(0.2–1.3)	(0.3–1.1)	(0.4–1.0)	(0.5–1.1)	(0.4–1.0)	(0.5–1.1)	(0.6–1.3)	(0.4–1.1)	(0.3–1.1)	(0.5–1.2)
	[0.5–1.0]	[0.4–1.1]	[0.6–0.9]	[0.6–1.0]	[0.4–0.8]	[0.7–1.0]	[0.6–1.1]	[0.5–1.0]	[0.6–0.9]	[0.6–1.0]
Kurtosis	0.3	0.3	0.4	0.4	0.2	0.5	0.4	0.3	0.3	0.5
	(-0.6–1.8)	(-0.7–1.3)	(-0.3–1.0)	(-0.2–1.6)	(-0.4–1.2)	(-0.2–1.1)	(-0.2–1.6)	(-0.3–1.2)	(-0.6–1.2)	(-0.2–1.7)
	[-0.3–1.1]	[-0.4–1.1]	[-0.2–0.9]	[-0.1–1.0]	[-0.4–0.6]	[0.1–0.8]	[-0.1–1.0]	[-0.1–0.9]	[0.0–0.7]	[-0.1–1.0]
Median	49.4	49.9	47.8	49.0	50.8	46.6	48.3	49.7	49.9	49.1
	(36.0–68.0)	(37.0–61.0)	(36.0–59.0)	(35.0–57.0)	(38.0–64.0)	(37.0–54.0)	(37.0–54.0)	(34.0–65.0)	(35.0–68.0)	(35.0–62.0)
	[39.25–58.5]	[41.0–57.8]	[38.8–53.8]	[41.3–56.0]	[40.3–57.8]	[41.0–51.0]	[44.0–54.0]	[42.5–54.5]	[43.0–57.0]	[42.5–57.5]