Table 1.
Descriptive and reproducibility data for ffat, T2, T2(FS), T1, T1(FS), PSR, and PSR(FS) in eight human thigh muscles. For each variable, the mean and SD are given in the top row; significant differences are indicated in the middle row; and the absolute and relative RC values are given in the bottom row. The units of T2 and T2(FS) are ms and the units of T1 and T1(FS) are s. A hyphen (-) indicates lack of significance. For ffat, n = 4.
| RF | VL | VI | VM | BF | ST | SM | AD | ||
|---|---|---|---|---|---|---|---|---|---|
| ffat | Mean (SD) | 0.028 (0.003) | 0.050 (0.014) | 0.032 (0.014) | 0.022 (0.006) | 0.043 (0.004) | 0.037 (0.009) | 0.033 (0.007) | 0.031 (0.006) |
| Significance: | <VL, BF | >RF, VI, VM, SM, AD | <VL, BF | <VL, BF, ST | >RF, VI, VM, SM, AD | >VM | <VL | <VL, BF | |
| RC (% of Mean) | 0.003 (10.7%) | 0.013 (26.0%) | 0.020 (62.5%) | 0.009 (40.9%) | 0.016 (37.2%) | 0.011 (29.7%) | 0.025 (75.8%) | 0.005 (16.1%) | |
| T2 | Mean (SD) | 30.1 (0.7) | 31.7 (1.0) | 31.4 (1.1) | 31.5 (1.1) | 32.3 (1.2) | 31.5 (1.4) | 31.9 (1.3) | 31.8 (1.0) |
| RC (% of Mean) | 1.2 (4.0%) | 1.1 (3.5%) | 1.6 (5.1%) | 1.2 (3.8%) | 1.2 (3.7%) | 1.2 (3.8%) | 1.4 (4.4%) | 1.0 (3.2%) | |
| Significance: | <VL, VM, BF, ST, SM, AD | >RF | - | >RF | >RF | >RF | >RF | >RF | |
| T2 (FS) | Mean (SD) | 29.8 (0.8) | 30.9 (1.0) | 30.8 (1.0) | 30.8 (1.1) | 30.6 (1.1) | 29.9 (1.2) | 30.9 (1.4) | 30.7 (1.3) |
| Significance: | <VL | >RF | - | - | - | - | - | - | |
| RC (% of Mean) | 0.7 (2.3%) | 1.1 (3.6%) | 1.1 (3.6%) | 1.4 (4.6%) | 1.2 (3.9%) | 1.1 (3.7%) | 1.6 (5.2%) | 1.2 (3.9%) | |
| T1 | Mean (SD) | 1.36 (0.03) | 1.33 (0.02) | 1.36 (0.02) | 1.36 (0.04) | 1.32 (0.03) | 1.33 (0.03) | 1.33 (0.05) | 1.34 (0.03) |
| Significance: | >BF | - | >BF | >BF | <RF, VI, VM | - | - | - | |
| RC (% of Mean) | 0.06 (4.4%) | 0.06 (4.5%) | 0.05 (3.7%) | 0.05 (3.7%) | 0.07 (5.3%) | 0.04 (3.0%) | 0.04 (3.0%) | 0.04 (3.0%) | |
| T1 (FS) | Mean (SD) | 1.37 (0.03) | 1.35 (0.02) | 1.38 (0.02) | 1.37 (0.04) | 1.34 (0.03) | 1.36 (0.03) | 1.35 (0.04) | 1.36 (0.03) |
| Significance: | - | - | - | - | - | - | - | - | |
| RC (% of Mean) | 0.07 (5.1%) | 0.06 (4.4%) | 0.04 (2.9%) | 0.06 (4.3%) | 0.04 (2.9%) | 0.03 (2.2%) | 0.09 (6.6%) | 0.03 (2.2%) | |
| PSR | Mean (SD) | 0.094 (0.01) | 0.094 (0.007) | 0.091 (0.008) | 0.101 (0.020) | 0.103 (0.010) | 0.116 (0.027) | 0.094 (0.007) | 0.109 (0.028) |
| Significance: | <ST, SM | <ST, SM | - | >VI, VM | >VI, VM | - | |||
| RC (% of Mean) | 0.024 (27.3%) | 0.012 (13.6%) | 0.008 (9.3%) | 0.024 (27.9%) | 0.027 (29.0%) | 0.026 (27.7%) | 0.038 (40.4%) | 0.017 (18.5%) | |
| PSR (FS) | Mean (SD) | 0.094 (0.005) | 0.092 (0.004) | 0.091 (0.006) | 0.092 (0.007) | 0.094 (0.004) | 0.101 (0.006) | 0.100 (0.008) | 0.109 (0.025) |
| Significance: | <SM | <SM | <SM | - | - | - | >RF, VL, VI | - | |
| RC (% of Mean) | 0.021 (23.1%) | 0.032 (34.4%) | 0.02 (22.7%) | 0.014 (15.9%) | 0.02 (22.2%) | 0.021 (22.3%) | 0.048 (48.0%) | 0.02 (21.3%) |