Table 2.
Regression coefficients and optimum treadmill slope for each running speed.
| Speed (km·h−1) | a | b | c | d | r2 | Optimum slope (%) |
|---|---|---|---|---|---|---|
| 8 | 199.44 | 8.9189 | 0.2657 | −0.0024 | 0.998 | −14.09¤ |
| 10 | 190.56 | 8.913 | 0.2686 | 0.0007 | 0.998 | −17.84 |
| 12 | 187.8 | 8.9383 | 0.2639 | 0.0005 | 0.996 | −17.84 |
| 14 | 192.24 | 8.9895 | 0.2283 | −0.00009 | 0.998 | −19.46¤ |
The regression coefficients are for the equation C = a + bi + ci2 + di3 for each running speed, where C is the oxygen cost of running in ml·kg−1·km−1 and i is the slope in %.
¤
indicate a statistically significant difference vs. 10 and 12 km·h-1 (p < 0.05).