Table:
Quadriceps	Hamstrings	Adductor	Whole thigh
Young	Old	Young	Old	Young	Old	Young	Old
IMF	64.4 (32.1)	66.5 (15.0)	41.1 (24.4)	51.7 (13.4)	55.8 (39.2)	46.7 (16.3)	161.3 (93.1)	164.9 (39.4)
Skeletal muscle	1304.2 (373.2)	824.3 (247.2)*	438.5 (132.3)	316.7 (80.5)*	655.2 (226.4)	475.8 (161.1)*	2397.9 (712.1)	1616.8 (469.0)*
Normalized IMF	1.0 (0.4)	1.2 (0.2)	0.6 (0.3)	0.9 (0.2)*	0.9 (0.5)	0.8 (0.3)	2.5 (1.1)	2.9 (0.6)
Normalized skeletal muscle	20.7 (3.8)	14.4 (2.8)*	7.0 (1.5)	5.6 (1.1)*	10.4 (2.7)	8.2 (1.9)*	38.1 (7.6)	28.2 (5.2)*
Volume-based IMF content	4.8 (2.2)	7.8 (2.4)*	8.6 (4.7)	14.4 (3.7)*	8.3 (5.4)	9.5 (3.7)	6.5 (3.3)	9.7 (2.9)*

Express the illustration as Markdown code.

| <ROWSPAN=2>  | <COLSPAN=2> Quadriceps | <COLSPAN=2> Hamstrings | <COLSPAN=2> Adductor | <COLSPAN=2> Whole thigh | 
 | Young | Old | Young | Old | Young | Old | Young | Old | 
 | --- | --- | --- | --- | --- | --- | --- | --- | --- | 
 | IMF | 64.4 (32.1) | 66.5 (15.0) | 41.1 (24.4) | 51.7 (13.4) | 55.8 (39.2) | 46.7 (16.3) | 161.3 (93.1) | 164.9 (39.4) | 
 | Skeletal muscle | 1304.2 (373.2) | 824.3 (247.2)* | 438.5 (132.3) | 316.7 (80.5)* | 655.2 (226.4) | 475.8 (161.1)* | 2397.9 (712.1) | 1616.8 (469.0)* | 
 | Normalized IMF | 1.0 (0.4) | 1.2 (0.2) | 0.6 (0.3) | 0.9 (0.2)* | 0.9 (0.5) | 0.8 (0.3) | 2.5 (1.1) | 2.9 (0.6) | 
 | Normalized skeletal muscle | 20.7 (3.8) | 14.4 (2.8)* | 7.0 (1.5) | 5.6 (1.1)* | 10.4 (2.7) | 8.2 (1.9)* | 38.1 (7.6) | 28.2 (5.2)* | 
 | Volume-based IMF content | 4.8 (2.2) | 7.8 (2.4)* | 8.6 (4.7) | 14.4 (3.7)* | 8.3 (5.4) | 9.5 (3.7) | 6.5 (3.3) | 9.7 (2.9)* |