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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Osteoarthritis Cartilage. 2008 Mar 24;16(9):1047–1053. doi: 10.1016/j.joca.2008.02.002

Table 3.

Biomarker levels measured at 6 months and 18 months, by intervention arms, adjusted for baseline values, age, gender and BMI, mean (SE)

Outcomes Diet+Exercise Diet Exercise Control P-value*
6-Month
N=46
18-Month
N=46
6-Month
N=48
18-Month
N=48
6-Month
N=45
18-Month
N=45
6-Month
N=52
18-Month
N=53
Grp Time
HA (ng/ml) 42.28 (3.79) 45.33 (3.63) 46.95 (3.64) 44.21 (3.44) 45.68 (3.67) 43.45 (3.54) 40.46 (3.58) 47.67 (3.35) .99 .50
AgKS (ng/ml) 310.22 (7.62) 310.93 (7.32) 312.61 (7.29) 306.38 (6.90) 322.79 (7.35) 314.11 (7.09) 308.67 (7.17) 286.66 (6.71) .07 .02
COMP (U/L) 10.80 (0.49) 11.81 (0.46) 11.58 (0.47) 12.21 (0.44) 12.77 (0.46) 12.84 (0.44) 11.75 (0.45) 11.72 (0.42) .04 .10
TGFβ1 (ng/ml) 38.89 (1.14) 39.06 (1.07) 36.40 (1.08) 36.65 (1.01) 37.63 (1.08) 38.46 (1.04) 40.93 (1.04) 39.41 (0.98) .02 .87

HA = hyaluronan, AgKS = antigenic keratan sulfate, COMP = cartilage oligomeric protein, TGF-β1 = transforming growth factor-B1.

*

Interactions for Group and time not statistically significant.