Table 4. Correlation coefficient (P value) between isokinetic and anthropometric variables and energy running cost (E_c) for female runners.

	Ec at 10kmh−1 with a 3% gradient (n = 15)	Ec at 11kmh−1 with a 1% gradient (n = 15)
Isokinetic variables
Conventional strength balance ratio	0.01 (0.98)	0.35 (0.25)
Functional strength balance ratio	−0.02 (0.94)	−0.16 (0.60)
Absolute peak torque of extensor muscles at 60°  s−1 in concentric action (Nm)	−0.17 (0.59)	0.10 (0.75)
Peak torque relative to body mass of extensor muscle at 60°  s−1 in concentric action (%)	−0.07 (0.80)	0.04 (0.89)
Absolute peak torque of flexor muscles at 60°  s−1 in concentric action (Nm)	−0.15 (0.62)	0.36 (0.24)
Peak torque relative to body mass of flexor muscle at 60°  s−1 in concentric action (%)	−0.04 (0.88)	0.36 (0.24)
Absolute peak torque of extensor muscles at 180°  s−1 in concentric action (Nm)	0.39 (0.19)	0.53 (0.07)
Peak torque relative to body mass of extensor muscle at 180°  s−1 in concentric action (%)	0.59 (0.03)	0.50 (0.09)
Absolute peak torque of flexor muscles at 180°  s−1 in concentric action (Nm)	−0.28 (0.37)	0.10 (0.74)
Peak torque relative to body mass of flexor muscle at 180°  s−1 in concentric action (%)	−0.27 (0.39)	0.06 (0.84)
Absolute peak torque of extensor muscles at 180°  s−1 in eccentric action (Nm)	−0.16 (0.61)	0.22 (0.48)
Peak torque relative to body mass of extensor muscles at 180°  s−1 in eccentric action (%)	−0.19 (0.53)	0.21 (0.47)
Absolute peak torque of flexor muscles at 180°  s−1 in eccentric action (Nm)	−0.14 (0.64)	−0.12 (0.69)
Peak torque relative to body mass of flexor muscles at 180°  s−1 in eccentric action (%)	−0.15 (0.60)	−0.11 (0.70)
Total body mass (kg)	−0.24 (0.51)	0.09 (0.71)
Fat-free mass (g)	0.01 (0.98)	0.13 (0.66)
Fat-free mass (%)	0.38 (0.22)	0.21 (0.50)