Table 2.
Mid-thigh muscle cross-sectional areas as measured by pQCT at baseline (pre), week 3 (mid), and post-training (post).
| Variable | Group | |||
|---|---|---|---|---|
| TR70 (n = 12) | TR45 (n = 9) | BFR20 (n = 12) | CON (n = 8) | |
| MCSA (mm2)b | ||||
| Pre | 17167.4 ± 2702.8 | 15505.4 ± 1746.5 | 16162.0 ± 2564.4 | 17250.8 ± 2673.7 |
| Mid* | 17379.3 ± 2670.2 | 15771.3 ± 1736.5 | 16372.7 ± 2443.9 | 17395.9 ± 2555.3 |
| Post** † | 17526.6 ± 2714.9 | 16129.5 ± 1818.6 | 16603.9 ± 2703.8 | 17334.9 ± 2474.7 |
| Abs ∆ (mm2) | ||||
| Mid | 211.9 ± 404.5 | 265.8 ± 458.0 | 210.7 ± 586.5 | 145.2 ± 412.8 |
| Post | 359.2 ± 341.5 | 624.1 ± 492.7 | 441.8 ± 318.6 | 84.1 ± 513.7 |
| % ∆b | ||||
| Mid | 1.32 ± 2.55 | 1.78 ± 2.92 | 1.47 ± 3.51 | 0.96 ± 2.43 |
| Post†† | 2.15 ± 1.99 | 4.09 ± 3.12 | 2.68 ± 2.01 | 0.68 ± 3.06 |
Values are mean ± SD. TR70, high intensity 70% 1RM; TR45, moderate intensity 45% 1RM; BFR20, blood flow restriction 20%1RM; CON, control; MCSA, mid-thigh muscle cross-sectional area; Abs Δ-absolute change vs. Pre; % Δ-percent change vs. Pre.
b
Significant training effect.
*
p ≤ 0.05 vs. pre.
**
p ≤ 0.01 vs. pre.
†
p ≤ 0.05 vs. mid.
††
p ≤ 0.01 vs. mid.