Impact of Acute Eccentric versus Concentric Running on Exercise-Induced Fat Oxidation and Postexercise Physical Activity in Untrained Men

Table 1

Comparison between physiological responses during incremental flat running (FR) and downhill running (DHR) tests.

Speed	FR	DHR	Mean change (95% CI)	Percentage change (%)	value
VO2 (ml/min/kg)
4 km/h			2.01 (1.6-2.4)	21.45	<0.001
5 km/h			2.97 (2.3-3.7)	26.52	<0.001
6 km/h			4.98 (3.5-6.5)	33.56	<0.001
7 km/h			4.92 (3.7-6.2)	23.65	<0.001
8 km/h			5.51 (3.5-7.5)	21.74	<0.001
Time effect	<0.001
Timegroup	<0.001
Fat oxidation (g/min)
4 km/h			0.10 (0.04-0.17)	50	0.033
5 km/h			0.09 (0.009-0.18)	36	0.051
6 km/h			0.07 (-0.02-0.16)	25.9	0.231
7 km/h			-0.12 (-0.06-0.25)	54.4	0.186
8 km/h			-0.17 (-0.38-0.03)	106.3	0.071
Time effect	0.535
Timegroup	0.060
CHO oxidation (g/min)
4 km/h			0.003 (-0.21-0.21)	0.65	0.978
5 km/h			0.14 (-0.10-0.38)	26.92	0.180
6 km/h			0.47 (0.20-0.75)	52.81	0.001
7 km/h			1.06 (0.43-1.69)	61.99	0.034
8 km/h			1.06 (0.32-1.79)	51.71	0.012
Time effect	<0.001
Timegroup	0.020
RER
4 km/h			-0.05 (-0.12-0.03)	5.95	0.294
5 km/h			-0.01 (-0.07-0.06)	1.19	0.820
6 km/h			0.04 (-0.01-0.10)	4.59	0.192
7 km/h			0.09 (0.03-0.15)	9.78	0.007
8 km/h			0.08 (0.01-0.15)	8.51	0.034
Time effect	<0.001
Timegroup	0.004

Data are presented as . FR: flat running; DHR: downhill running; CI: confidence interval; CHO: carbohydrate; RER: respiratory exchange ratio. value significant at , 0.01 level.