Table 1.
Related indicators of VO2max in various test procedures for untrained male Wistar rats.
| Parameters | P1 | P2 | P3 |
|---|---|---|---|
| 4 weeks old | |||
| VO2max (mL kg−1 min−1) | 104.4 ± 6.9 | 103.8 ± 8.9 | 95.3 ± 6.9*# |
| RER | 1.07 ± 0.24 | 0.98 ± 0.29* | 1.04 ± 0.45# |
| Completion time (min) | 24.14 ± 2.63 | 28.50 ± 2.81* | 21.31 ± 2.5# |
| Induction rate | 75% | 63% | 63% |
| Injured rats (n) | 2 | 2 | 0 |
| 8 weeks old | |||
| VO2max (mL kg−1 min−1) | 79.8 ± 4.4 | 84.7 ± 3.7* | 80.3 ± 3.5 |
| RER | 1.04 ± 0.03 | 1.02 ± 0.03* | 1.05 ± 0.02# |
| Completion time (min) | 20.25 ± 3.83 | 24.00 ± 4.93 | 19.00 ± 2.59# |
| Induction rate | 70% | 75% | 70% |
| Injured rats (n) | 2 | 1 | 0 |
| 10 months old | |||
| VO2max (mL kg−1 min−1) | 58.3 ± 2.2 | 62.2 ± 1.9 | 63.3 ± 1.7 |
| RER | 1.02 ± 0.02 | 1.03 ± 0.02 | 1.07 ± 0.01 |
| Completion time (min) | 14.50 ± 0.85 | 20.72 ± 1.43* | 18.83 ± 1.38* |
| Induction rate | 58% | 75% | 75% |
| Injured rats (n) | 4 | 2 | 0 |
All values are presented as mean ± SD, n = 9 for each group.
*p < .0.05 versus P1; #p < .0.05 versus P2. P1: Procedure 1, P2: Procedure 2 and P3: Procedure 3. Induction rate: a ratio of VO2max induced cases to total tested rats’ cases.