Table 1.

Demographics and race variables of 23 runners in the 2017 Hartford Marathon by AKI status

VariableTotal, n=23No AKI, n=10AKI, n=12
Demographics
 Age, yr37 (35–44)37 (32–42)42 (35–46)
 Men10 (43%)6 (60%)4 (33%)
 BMI, kg/m224 (22–25)25 (22–25)22 (21–25)
 Weight, kg68 (61–77)73 (61–80)64 (59–68)
 Height, cm173 (163–178)175 (165–178)168 (163–178)
 NSAIDs>48 h before race10 (43%)5 (50%)5 (42%)
 NSAIDs>24 h postrace7 (30%)5 (50%)2 (17%)
 Herbal supplementation12 (52%)5 (50%)7 (58%)
Training and race variables
 Finishing pace, min/km6.26 (5.81–7.30)6.71 (6.11–7.30)5.81 (5.21–7.15)
 Midrace pace, min/km6.11 (5.51–6.86)6.26 (5.66–7.00)5.51 (5.22–6.56)
 Fastest marathon time, h4.07 (3.75–4.75)4.58 (4.07–4.65)3.82 (3.45–4.77)
 No. of lifetime marathons3 (1–9)1 (0–6)6 (2–21)
 Running experience, yr9 (5,12)6 (5–9)10 (6–20)
 Average weekly miles29 (17–36)29 (17–32)28 (17–39)
 Marathon finishing time, h4.24 (3.59–5.05)4.39 (4.15–5.05)3.83 (3.40–5.00)
 19+ km runs per mo3.5 (2.5–5.0)3 (2.5–4)4 (3–7)
  • Data are shown as median (interquartile range), and frequencies are presented as n (%). The median age of runners was 37 years old, and 43% were men. There were no significant differences in baseline characteristics, such as weight and body mass index (BMI), between runners who developed AKI and those who did not. In contrast, some training parameters were significantly different between the two groups. Runners with more years of running experience developed AKI compared with those with less experience. There was a trend of higher participation in marathons as well as higher long-mile runs (>12 miles) in runners who developed AKI. This suggests that runners with AKI tend to be more experienced and have more extensive training. NSAID, nonsteroidal anti-inflammatory drug.