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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Eur J Appl Physiol. 2010 Oct 23;111(4):715–723. doi: 10.1007/s00421-010-1694-1

Table 2.

Correlations between variables of interest and age, race, treadmill endurance, and muscle fatigue

Age Race Treadmill
endurance		 Muscle
fatigue
Age −0.28 (<0.01) −0.26 (<0.03)
Race 0.05 (0.30) −0.30 (<0.01) 0.01 (0.99)
VO2max −0.31 (<0.01) −0.31 (<0.01) 0.84 (<0.01) 0.18 (0.18)
VO2 for 3 mph Walk −0.19 (0.03) −0.19 (0.03) 0.15 (0.07) 0.37 (<0.01)
Knee extension strength −0.32 (<0.01) −0.32 (<0.01) 0.30 (<0.01) 0.13 (0.35)
Plantar flexion strength −0.25 (0.05) −0.07 (0.60) 0.11 (0.43) 0.27 (<0.05)
OxPhos rate −0.31 (0.01) −0.25 (<0.07) 0.39 (<0.01) 0.12 (0.40)
AnGly rate −0.29 (<0.02) −0.27 (<0.05) 0.19 (0.17) 0.02 (0.89)
CK rate −0.17 (<0.11) −0.06 (0.67) 0.15 (0.28) −0.05 (0.70)
ME 0.34 (<0.01) 0.15 (0.29) −0.38 (0.01) −0.43 (<0.01)

P values are given in parenthesis ME metabolic economy