Table 1 Baseline characteristics

Age (years)

45.94 (SD 10.3)

47.1 (SD 9.7)

44.8 (SD 10.8)

Number of days running per week

3.0 (SD 1.3)

3.1 (SD 1.5)

2.9 (SD 1.0)

Distance per week (km)

22.6 (SD 19.7)

25.6 (SD 23.4)

19.4 (SD 13.9)

RRI past 12 months

yes/no (%)

71/175 (40.6%)

39/92 (42.4%)

31/82 (37.8%)

5 km PB mean^††

(min:sec)

22:50

(Range 17:30–36:22; Median 21:59; n = 92)

27:06

(Range 18:22–56:00; Median 27:00; n = 82)

10 km PB mean^††

(hr:min:sec)

0:48:04

(Range 0:36:10– 01:15:00; Median 46:30; n = 65)

0:55:05

(Range 0:38:43–1:16:00; Median 55:00; n = 56)

Half marathon PB mean††

(hr:min:sec)

1:41:45

(Range 1:20:00–2:20:00; Median 01:40:00; n = 33)

2:03:31

(Range 1:26:00–3:05:51; Median 02:00:00; n = 31)

Marathon PB mean^††

(hr:min:sec)

3:53:22

(Range 2:50:00–5:40:00; Median 03:52:00; n = 22)

04:22:16

Range 3:07:00–6:49:22; Median 03:53:00; n = 19)