Table 2.
Mean area and indices of muscle components in male and female participants.
| Muscle components in participants |
Age group, years | P value | ||||||
|
|
|
20-29 | 30-39 | 40-49 | 50-59 | 60-69 | 70-79 |
|
| Male participants, n | 29 | 17 | 22 | 15 | 25 | 27 |
|
|
|
|
TAMAa, mean (SD) | 177.0 (22.9) | 187.9 (29.6) | 175.3 (24.5) | 168.4 (18.0) | 160.0 (22.5) | 149.6 (21.0) | <.001 |
|
|
NAMAb, mean (SD) | 153.4 (20.0) | 150.4 (26.1) | 144.3 (19.5) | 133.5 (19.1) | 122.0 (16.7) | 105.9 (17.5) | <.001 |
|
|
LAMAc, mean (SD) | 20.2 (8.9) | 30.9 (11.7) | 27.0 (10.5) | 30.5 (6.7) | 32.9 (10.3) | 37.8 (14.4) | <.001 |
|
|
IMATd, mean (SD) | 3.3 (2.5) | 6.6 (5.1) | 3.9 (2.4) | 4.4 (1.7) | 5.1 (2.4) | 5.9 (3.6) | .004 |
|
|
Myosteatosis area (LAMA+IMAT), mean (SD) | 23.5 (11.0) | 37.5 (16.3) | 31.0 (12.3) | 34.9 (7.9) | 38.0 (11.6) | 43.7 (17.6) | <.001 |
| Female participants, n | 11 | 23 | 18 | 25 | 15 | 13 |
|
|
|
|
TAMA, mean (SD) | 109.6 (10.9) | 112.0 (15.3) | 111.3 (11.1) | 111.5 (15.4) | 108.8 (13.8) | 106.3 (17.2) | .88 |
|
|
NAMA, mean (SD) | 91.9 (9.5) | 92.6 (15.1) | 84.3 (11.2) | 81.0 (13.1) | 73.1 (14.2) | 63.9 (17.3) | <.001 |
|
|
LAMA, mean (SD) | 15.1 (5.7) | 16.5 (5.7) | 22.1 (8.4) | 24.9 (8.1) | 30.0 (8.8) | 33.5 (11.2) | <.001 |
|
|
IMAT, mean (SD) | 2.6 (1.4) | 2.8 (1.6) | 4.8 (3.1) | 5.7 (2.5) | 5.7 (3.3) | 8.9 (5.1) | <.001 |
|
|
Myosteatosis area (LAMA+IMAT), mean (SD) | 17.7 (6.9) | 19.3 (7.1) | 27.0 (11.1) | 30.5 (10.0) | 35.7 (11.4) | 42.4 (15.6) | <.001 |
aTAMA: total abdominal muscle area.
bNAMA: normal-attenuation muscle area.
cLAMA: low-attenuation muscle area.
dIMAT: inter/intramuscular adipose tissue area.