Table 1

Measurements of MRI parameters and correlation with distance run

Time point parameterSide12345Correlation with distance run (p value)
Mean days run0.115.529.142.852.5
Mean distance run, in km (in mi)5 (3.2)1068 (664)2062 (1282)2964 (1842)3669 (2280)
AT diameter (SE)Right6.8 (0.37)7.2 (0.44)7.6 (0.54)7.8 (0.53)7.8 (0.55)<0.001
Left6.8 (0.39)7.3 (0.49)7.6 (0.53)7.7 (0.60)7.8 (0.66)<0.001
SI at insertion of ATRight32.4 (3.96)38.5 (5.39)40.0 (6.49)42.1 (7.08)39.2 (7.43)0.6
Left30.4 (1.80)31.8 (2.72)28.5 (1.50)32.2 (2.37)29.5 (1.77)0.5
SI in the middle of the ATRight35.9 (2.72)42.9 (6.03)45.5 (4.94)42.2 (6.52)47.9 (8.97)0.05
Left38.3 (3.92)41.1 (5.28)36.4 (3.06)36.7 (3.80)34.1 (5.42)0.7
New lesions in the ATRightNA0.060.15000.33
LeftNA0.0300.0900.7
Distance of the lesion to the insertion of the ATRight12.7 (4.02)15.6 (5.19)16.5 (3.52)15.8 (4.23)11.9 (6.03)
Left21.8 (4.57)21.5 (2.50)26.2 (6.19)24 (6.03)19
SI in the calcaneus at the AT insertionRight112.8 (7.30)153.3 (13.80)170.6 (15.66)176.8 (19.66)180.1 (18.97)<0.001
Left107.2 (5.38)144.7 (9.90)160.2 (11.70)160.5 (11.54)167.0 (12.65)<0.001
SI in an innocuous area of the calcaneusRight158.2 (6.78)210.8 (18.25)243.9 (22.59)246.1 (27.49)250.2 (26.43)<0.001
Left164.0 (7.20)216.4 (14.38)248.8 (21.45)251.5 (25.1)268.6 (25.33)<0.001
Maximal SI in any boneRight312.5 (26.58)411.7 (30.17)423.3 (32.14)386.2 (22.29)399.9 (26.10)0.003
Left283.4 (24.29)357.7 (24.59)385.8 (35.06)410.7 (35.43)417.3 (39.79)<0.001
Number of bone lesionsRight2.1 (0.6)3.2 (0.62)3.5 (0.58)3.2 (0.59)3.6 (0.61)0.016
Left2.3 (0.44)2.4 (0.43)2.3 (0.45)3.1 (0.54)3.2 (0.55)0.002
SI in the plantar aponeurosisRight25.4 (4.95)28 (5.79)27.9 (6.59)33.7 (8.86)34.8 (9.54)0.4
Left21.4 (1.31)22.4 (1.29)22.3 (1.31)22.1 (2.14)20.9 (1.37)0.2
Oedema in the plantar aponeurosis (yes/no)Right0.070.060.090.110.120.9
Left0000.040NA
Retrocalcanear bursa (yes/no)Right0.070.190.180.140.150.8
Left0.030.210.240.180.120.3
Subcutaneous oedema (yes/no)Right0.050.640.650.790.81<0.001
Left0.070.680.610.640.65<0.001
  • For quantitative data, the mean (with SE) is given; for qualitative data, the percentage of positive measurements (mean over both readers) are given. Correlation with distance run: p is calculated by a univariate regression model with the parameter in question as the dependent variable and total distance as the independent variable. Statistically significant correlations are given in bold.