Table 2.
Effects of BR supplementation on exercising hindlimb skeletal muscle BF and VC in CHF and CHF + BR rats
| BF, ml·min−1·100 g−1 |
VC, ml·min−1·100 g−1·mmHg−1 |
|||
|---|---|---|---|---|
| CHF | CHF + BR | CHF | CHF + BR | |
| Ankle extensors | ||||
| Soleus (9%) | 262 ± 36 | 337 ± 28* | 2.05 ± 0.32 | 2.62 ± 0.16 |
| Plantaris (80%) | 155 ± 11 | 204 ± 20* | 1.18 ± 0.08 | 1.58 ± 0.14* |
| Gastrocnemius | ||||
| Red (14%) | 442 ± 49 | 407 ± 60 | 3.45 ± 0.49 | 3.14 ± 0.40 |
| White (100%) | 28 ± 3 | 40 ± 6* | 0.21 ± 0.02 | 0.31 ± 0.05* |
| Mixed (91%) | 131 ± 9 | 156 ± 10* | 1.00 ± 0.07 | 1.21 ± 0.05* |
| Tibialis posterior (73%) | 97 ± 13 | 114 ± 17 | 0.75 ± 0.10 | 0.90 ± 0.13 |
| Flexor digitorum longus (68%) | 52 ± 9 | 61 ± 13 | 0.39 ± 0.06 | 1.24 ± 0.77 |
| Flexor halicus longus (71%) | 47 ± 4 | 80 ± 16* | 0.36 ± 0.03 | 0.62 ± 0.12* |
| Ankle flexors | ||||
| Tibialis anterior | ||||
| Red (63%) | 299 ± 22 | 319 ± 33 | 2.29 ± 0.18 | 2.50 ± 0.26 |
| White (80%) | 93 ± 11 | 102 ± 14 | 0.71 ± 0.07 | 0.79 ± 0.10 |
| Extensor digitorum longus (76%) | 61 ± 26 | 98 ± 44 | 0.45 ± 0.18 | 0.78 ± 0.35 |
| Peroneals (67%) | 120 ± 8 | 138 ± 24 | 0.92 ± 0.07 | 1.07 ± 0.18 |
| Knee extensors | ||||
| Vastus intermedius (4%) | 360 ± 52 | 415 ± 40 | 2.79 ± 0.42 | 3.22 ± 0.24 |
| Vastus medialis (82%) | 153 ± 13 | 170 ± 15 | 1.18 ± 0.12 | 1.30 ± 0.10 |
| Vastus lateralis | ||||
| Red (35%) | 340 ± 20 | 411 ± 45 | 2.62 ± 0.19 | 3.18 ± 0.27* |
| White (100%) | 18 ± 3 | 24 ± 5 | 0.14 ± 0.02 | 0.19 ± 0.04 |
| Mixed (89%) | 136 ± 9 | 160 ± 11* | 1.05 ± 0.10 | 1.24 ± 0.07* |
| Rectus femoris | ||||
| Red (66%) | 232 ± 18 | 279 ± 33 | 1.80 ± 0.17 | 2.16 ± 0.23 |
| White (100%) | 91 ± 5 | 108 ± 9* | 0.70 ± 0.04 | 0.85 ± 0.06* |
| Knee flexors | ||||
| Biceps femoris | ||||
| Anterior (100%) | 31 ± 5 | 50 ± 9* | 0.23 ± 0.04 | 0.39 ± 0.06* |
| Posterior (92%) | 77 ± 5 | 95 ± 8* | 0.59 ± 0.04 | 0.74 ± 0.06* |
| Semitendinosus (83%) | 43 ± 4 | 43 ± 7 | 0.33 ± 0.03 | 0.34 ± 0.05 |
| Semimembranosus | ||||
| Red (72%) | 107 ± 10 | 124 ± 9 | 0.82 ± 0.08 | 0.98 ± 0.07 |
| White (100%) | 24 ± 3 | 33 ± 5 | 0.18 ± 0.02 | 0.26 ± 0.04* |
| Thigh adductors | ||||
| Adductor longus (5%) | 264 ± 23 | 298 ± 48 | 2.03 ± 0.19 | 2.29 ± 0.33 |
| Adductor magnus & brevis (89%) | 61 ± 5 | 73 ± 11 | 0.46 ± 0.03 | 0.57 ± 0.09 |
| Gracilis (77%) | 33 ± 5 | 36 ± 8 | 0.25 ± 0.03 | 0.28 ± 0.06 |
| Pectineus (69%) | 42 ± 10 | 53 ± 10 | 0.31 ± 0.08 | 0.42 ± 0.08 |
Values are means ± SE; n = 10 in each group. Values in parentheses indicate %type IIb + IId/IIx according to Delp and Duan (15).
*
P < 0.05 vs. control (CHF).