Table 2.
Baseline and eight-month measures with percent change in volumetric outcomes at the femoral neck and total hip from main effect analyses (ITT analysis, n = 102)
| LiPBE (n = 54) | HiRIT (n = 48) | ||||||
|---|---|---|---|---|---|---|---|
| Outcome measure | Baseline | Follow up | % change (95% CI) | Baseline | Follow up | % change (95% CI) | p value |
| Trabecular | |||||||
| FN vBMC, g | 1.614 ± 0.048 | 1.609 ± 0.047 | − 0.0 ± 1.1 (− 2.2, 2.1) | 1.598 ± 0.050 | 1.634 ± 0.050 | 3.3 ± 1.6 (0.0, 6.6) | 0.083 |
| FN volume, cm3 | 10.110 ± 0.261 | 10.227 ± 0.260 | 1.3 ± 0.7 (− 0.1, 2.6) | 10.351 ± 0.282 | 10.513 ± 0.280 | 1.4 ± 0.7 (0.1, 2.8) | 0.882 |
| FN vBMD, g/cm3 | 161.0 ± 4.6 | 159.0 ± 4.5 | − 1.2 ± 1.1 (− 3.4, 1.1) | 160.2 ± 4.9 | 161.3 ± 4.7 | 2.0 ± 1.6 (− 1.2, 5.2) | 0.104 |
| TH vBMC, g | 7.337 ± 0.199 | 7.239 ± 0.213 | − 1.2 ± 1.2 (− 3.6, 1.1) | 7.189 ± 0.211 | 7.404 ± 0.226 * | 3.1 ± 1.1 (0.9, 5.2) | 0.008 |
| TH volume, cm3 | 58.882 ± 1.438 | 59.058 ± 1.441 | 0.7 ± 0.5 (− 0.4, 1.8) | 61.003 ± 1.550 | 61.862 ± 1.554 | 1.4 ± 0.6 (0.1, 2.7) | 0.411 |
| TH vBMD, g/cm3 | 129.0 ± 3.1 | 126.8 ± 3.2 | − 1.6 ± 1.2 (− 3.9, 0.7) | 125.0 ± 3.3 | 126.6 ± 3.9 | 1.5 ± 1.0 (− 0.4, 3.5) | 0.042 |
| Cortical | |||||||
| FN vBMC, g | 1.738 ± 0.035 | 1.731 ± 0.035 | − 0.2 ± 0.7 (− 1.6, 1.2) | 1.738 ± 0.037 | 1.762 ± 0.038 | 1.4 ± 0.7 (− 0.1, 2.9) | 0.122 |
| FN volume, cm3 | 2.543 ± 0.052 | 2.555 ± 0.054 | 1.3 ± 0.7 (− 0.2, 2.8) | 2.589 ± 0.056 | 2.643 ± 0.058 * | 2.8 ± 0.9 (0.9, 4.6) | 0.210 |
| FN vBMD, g/cm3 | 686.3 ± 7.8 | 676.0 ± 7.5 * | − 1.4 ± 0.4 (− 2.2, 0.6) | 687.3 ± 8.3 | 678.5 ± 7.9 * | − 1.2 ± 0.5 (− 2.2, − 0.2) | 0.780 |
| TH vBMC, g | 11.094 ± 0.222 | 11.030 ± 0.214 | − 0.4 ± 0.5 (− 1.4, 0.6) | 11.036 ± 0.235 | 10.946 ± 0.227 | − 0.8 ± 0.5 (− 1.7, 0.2) | 0.602 |
| TH volume, cm3 | 16.133 ± 0.304 | 16.301 ± 0.300 | 1.2 ± 0.5 (0.2, 2.2) | 16.243 ± 0.328 | 16.395 ± 0.323 | 1.2 ± 0.6 (0.0, 2.4) | 0.941 |
| TH vBMD, g/cm3 | 739.2 ± 7.7 | 729.2 ± 7.4 * | − 1.3 ± 0.4 (− 2.0, − 0.5) | 738.9 ± 8.2 | 726.8 ± 7.9 * | − 1.6 ± 0.5 (− 2.5, − 0.6) | 0.614 |
| Total | |||||||
| FN vBMC, g | 3.352 ± 0.073 | 3.340 ± 0.073 | − 0.2 ± 0.7 (0.7, − 1.6) | 3.336 ± 0.077 | 3.395 ± 0.077 * | 2.0 ± 0.8 (0.4, 3.5) | 0.032 |
| FN volume, cm3 | 12.653 ± 0.300 | 12.782 ± 0.298 * | 1.2 ± 0.6 (0.1, 2.3) | 12.940 ± 0.323 | 13.156 ± 0.322 * | 1.7 ± 0.6 (0.4, 3.0) | 0.547 |
| FN vBMD, g/cm3 | 267.3 ± 5.6 | 263.5 ± 5.5 * | − 1.3 ± 0.7 (− 2.7, 1.1) | 266.2 ± 6.0 | 266.3 ± 5.8 | 0.4 ± 0.5 (− 1.6, 0.5) | 0.100 |
| TH vBMC, g | 18.431 ± 0.391 | 18.268 ± 0.394 | − 0.8 ± 0.6 (− 2.0, 0.3) | 18.225 ± 0.415 | 18.350 ± 0.417 | 0.7 ± 0.4 (− 0.1, 1.6) | 0.032 |
| TH volume, cm3 | 75.015 ± 1.697 | 75.356 ± 1.686 | 0.8 ± 0.4 (− 0.1, 1.6) | 77.246 ± 1.829 | 78.257 ± 1.818 * | 1.4 ± 0.6 (0.2, 2.5) | 0.399 |
| TH vBMD, g/cm3 | 261.0 ± 4.6 | 257.4 ± 4.4 * | − 1.3 ± 0.6 (− 2.5, − 0.1) | 255.7 ± 4.8 | 254.3 ± 4.7 | 0.4 ± 0.5 (− 1.4, 0.5) | 0.265 |
Data are mean ± SE
P values represent between-group comparison of % change from one-way ANOVA
CI confidence interval, FN femoral neck, HiRIT high-intensity resistance and impact training, ITT intention-to-treat, LiPBE low-intensity Pilates-based exercise, TH total hip, vBMC volumetric bone mineral content, vBMD volumetric bone mineral density
*within-group change from baseline p ≤ 0.05 from RMANOVA