Table 3. Exercise metabolic data before and after 3 days of T4 treatment (mean ± SD).
| Workload | P value | ||||||
| 0 Watts | 35 Watts | 70 Watts | 105 Watts | 140 Watts | Visit | Interaction | |
| Heart Rate (bts/min) | |||||||
| Day 1 | 87.0±18.2 | 95.1±18.6 | 113.4±22.8 | 136.1±26.7 | 158.8±27.0 | ||
| Day 4 | 83.8±13.5 | 93.6±14.3 | 110.3±18.4 | 134.4±24.7 | 158.0±26.3 | 0.27 | 0.33 |
| VO2 (L/min) | |||||||
| Day 1 | 0.58±0.11 | 0.81±0.07 | 1.13±0.09 | 1.48±0.07 | 1.91±0.08 | ||
| Day 4 | 0.60±0.09 | 0.80±0.07 | 1.12±0.07 | 1.50±0.10 | 1.93±0.09 | 0.66 | 0.42 |
| RER | |||||||
| Day 1 | 0.84±0.03 | 0.85±0.05 | 0.93±0.06 | 1.00±0.08 | 1.06±0.12 | ||
| Day 4 | 0.85±0.07 | 0.88±0.07 | 0.93±0.08 | 1.01±0.10 | 1.08±0.10 | 0.26 | 0.72 |
| Energy Expenditure (kcal/min) | |||||||
| Day 1 | 2.79±0.54 | 3.93±0.33 | 5.54±0.42 | 7.37±0.35 | 9.50±0.40 | ||
| Day 4 | 2.89±0.42 | 3.88±0.32 | 5.52±0.34 | 7.46±0.45 | 9.65±0.43 | 0.61 | 0.49 |
| Gross Efficiency (%) | |||||||
| Day 1 | 12.8±1.1 | 18.2±1.4 | 20.5±1.0 | 21.1±0.9 | |||
| Day 4 | 13.0±1.0 | 18.2±1.1 | 20.2±1.2 | 20.8±0.9 | 0.79 | 0.51 | |
| Work Efficiency (%) | |||||||
| Day 1 | 25.4±1.7 | 28.0±1.6 | 27.9±2.0 | 26.6±1.4 | |||
| Day 4 | 24.4±1.3 | 27.2±1.9 | 26.8±2.2 | 25.7±1.3 | 0.14 | 0.99 | |
| Delta Efficiency (%) | |||||||
| Day 1 | 31.5±3.5 | 28.0±4.4 | 23.6±2.1 | ||||
| Day 4 | 31.0±4.7 | 26.9±5.6 | 23.2±2.5 | 0.30 | 0.98 | ||
P values for the main effect of visit and the visit x exercise workload interaction are from two-way repeated measures ANOVA. VO2, volume of oxygen consumed in liters of O2 per minute; RER, respiratory exchange ratio.