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Table 2 3-parameter vs. 4-parameter model to describe the BLC-response to MSE30

From: Modelling the lactate response to short-term all out exercise

No Model R2 SS ((mmol l-1)2) A & A1 (mmol l-1) k1 & y1(min-1) A2 (mmol l-1) k2 & y2(min-1) F-test
1 3-Par. 0.9813 3.3496 14.9744 0.3805   0.0304  
  4-Par. 0.9613 3.2491 11.5457 0.4533 -1644.1026 0.0002  
2 3-Par. 0.9944 1.2735 16.2805 0.4054   0.0213 #
  4-Par. 0.9946 0.5160 12.5178 0.3504 -733.8497 0.0004  
3 3-Par. 0.9929 1.7610 15.8388 0.5378   0.0098 #
  4-Par. 0.9934 0.5882 11.1687 0.4186 -15.7730 0.0142  
4 3-Par. 0.9754 2.0272 10.0625 0.6528   0.0234  
  4-Par. 0.9369 1.7294 6.4807 0.5995 -1935.3727 0.0001  
5 3-Par. 0.9939 1.5333 18.7569 0.3780   0.0408  
  4-Par. 0.9899 1.2244 14.0299 0.4763 -717.1412 0.0006  
6 3-Par. 0.9711 4.6991 15.1327 0.5009   0.0432  
  4-Par. 0.9560 3.2632 10.3104 0.5295 -3260.3276 0.0001  
7 3-Par. 0.9904 1.7884 15.0838 0.6263   0.0193 #
  4-Par. 0.9831 0.9845 9.8006 0.5342 -1784.7679 0.0001  
8 3-Par. 0.9967 0.6126 14.7640 0.4912   0.0219  
  4-Par. 0.9931 0.5131 10.4533 0.5033 -977.3814 0.0003  
9 3-Par. 0.9937 1.2066 15.2064 0.6656   0.0204  
  4-Par. 0.9880 0.7076 9.4287 0.6027 -1188.8360 0.0002  
10 3-Par. 0.9932 1.6160 15.4396 0.5053   0.0126  
  4-Par. 0.9842 1.4673 10.9240 0.4777 -1177.0599 0.0002  
11 3-Par. 0.9936 1.5344 17.1709 0.4081   0.0270  
  4-Par. 0.9878 1.2859 13.0576 0.4348 -2103.6627 0.0002  
  1. R2: coefficient of determination; SS: sum of squared residuals; A: extra-vascular increase of lactate (3-parameter model); A1: amplitude of the invasion of lactate into the blood compartment (4-parameter model); k1 or y1: rate constant of lactate invasion into the blood compartment; A2: amplitude of the evasion of lactate out of the blood compartment (4-parameter model); k2 or y2: rate constant of lactate evasion out of the blood compartment; #: significantly improved goodness of the fit using the 4-parameter model