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Table 3 Multivariable analysis of race time

From: An empirical study of race times in recreational endurance runners

Covariate Marathon % change Half Marathon % change 10 km % change 5 km % change Interaction p-value
Without adjustment for BMI
 Male 03:47:46   01:39:48   00:44:42   00:20:46   
 Female 04:11:56 10.6 % 01:54:42 14.9 % 00:52:58 18.5 % 00:25:06 20.9 % <0.0001
 No tempo runs 04:02:55   01:48:17   00:49:59   00:23:15   
 Tempo runs 03:52:50 −4.2 % 01:43:34 −4.4 % 00:46:22 −7.2 % 00:21:51 −6.0 % 0.002
 No intervals 04:01:28   01:47:35   00:48:32   00:22:53   
 Intervals 03:52:57 −3.5 % 01:43:39 −3.7 % 00:47:18 −2.5 % 00:22:01 −3.8 % 0.5
Adjusting for BMI
 Male 03:43:06   01:37:40   00:43:32   00:20:18   
 Female 04:13:23 13.6 % 01:55:43 18.5 % 00:53:12 22.2 % 00:25:12 24.2 % <0.0001
 No tempo runs 03:59:38   01:46:52   00:49:05   00:22:49   
 Tempo runs 03:51:15 −3.5 % 01:43:01 −3.6 % 00:45:56 −6.4 % 00:21:44 −4.7 % 0.005
 No intervals 03:58:21   01:46:18   00:47:32   00:22:29   
 Intervals 03:51:26 −2.9 % 01:43:04 −3.0 % 00:47:01 −1.1 % 00:21:55 −2.5 % 0.6
  1. The model used here was adjusted for sex, intervals, tempo runs, age, and typical mileage, and separately with and without adjustment for BMI. After creating the model, all covariates except the covariate of interest were set to the mean, velocity was predicted and velocity converted to time in minutes