Paraspinal back muscles in asymptomatic volunteers: quantitative and qualitative analysis using computed tomography (CT) and magnetic resonance imaging (MRI)

Table 2 Descriptive statics of demographics data for 29 healthy volunteers

	Mininum	Maximum	Mean	Standard deviation	Men (n = 14)	Women (n = 15)	p-value
Age (year)	23.00	50.00	34.31	8.59	33.14 ± 6.83	35.40 ± 10.09	0.81*
Height (cm)	155.00	186.00	169.91	10.18	178.58 ± 6.03	161.81 ± 5.31	< 0.001
Weight (kg)	49.00	94.00	66.97	13.52	77.41 ± 9.41	57.22 ± 8.51	< 0.001
BMI (kg/m²)	19.30	29.40	22.98	2.64	24.27 ± 2.66	21.77 ± 2.01	0.008
Fat fraction (%)	9.69	29.25	18.44	6.39	14.35 ± 3.68	22.53 ± 5.93	< 0.001
HU	25.93	53.45	41.52	7.92	47.43 ± 4.30	36.00 ± 6.38	< 0.001
MR CSA (mm²)	1440.38	2921.77	2013.29	403.08	2297.59 ± 282.26	1729.00 ± 289.29	< 0.001
CT CSA (mm²)	1529.25	3436.73	2172.38	479.15	2519.67 ± 404.06	1848.24 ± 272.74	< 0.001

Using t-test, *using Mann-Whitney U test; BMI Body mass index, HU Hounsfiled unit, CSA Cross sectional area

ISSN: 1471-2474