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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