Variable | ≥1 GI symptoms during their last run | Test statistic | p Value | |
---|---|---|---|---|
Yes n=210* | No n=223* | |||
Age (year) | 36.8±11.5 | 40.4±11.2 | 3.32† | 0.00 |
BMI | 23.6±3.0 | 22.7±2.7 | −3.13† | 0.00 |
Timing of prerunning meal (min)‡ | 104.6±69.8 | 102.4±70.3 | −1.32† | 0.19 |
Timing of prerunning snack (min)§ | 89.2±65.2 | 81.6±60.6 | −0.48† | 0.63 |
Amount drink (mL) | ||||
1–4 h before running | 304.0±263.7 | 255.0±200.1 | −2.19† | 0.03 |
Within 1 h before running | 156.5±118.8 | 146.6±110.5 | −0.90† | 0.37 |
During running | 27.5±83.0 | 28.7±91.6 | 0.15† | 0.89 |
Running on an empty stomach (n) | 15 (7%) | 31 (14%) | 5.20¶ | 0.02 |
Sport drink (n) | ||||
1–4 h before running | ||||
No drink | 63 (30%) | 66 (30%) | 0.03¶ | 0.98 |
Hypotonic | 132 (63%) | 140 (63%) | ||
Isotonic and hypertonic | 15 (7%) | 17 (8%) | ||
Sport drink (n) | ||||
Within 1 h before running | ||||
No drink | 75 (36%) | 85 (38%) | 2.63¶ | 0.27 |
Hypotonic | 123 (59%) | 132 (59%) | ||
Isotonic and hypertonic | 12 (6%) | 6 (3%) | ||
Sport drink (n) | ||||
During running | ||||
No drink | 188 (90%) | 201 (90%) | 2.50** | 0.29 |
Hypotonic | 16 (8%) | 20 (9%) | ||
Isotonic and hypertonic | 6 (3%) | 2 (1%) | ||
Prevalence of total GI symptoms in general (n) | 123 (59%) | 48 (22%) | 62.12¶ | 0.00 |
Prevalence of upper GI symptoms in general (n) | 52 (25%) | 15 (7%) | 26.90¶ | 0.00 |
Prevalence of lower GI symptoms in general (n) | 109 (52%) | 46 (21%) | 46.04¶ | 0.00 |
Running experience (n) | ||||
<3 months | 26 (12%) | 20 (9%) | 21.43¶ | 0.00 |
3–12 months | 57 (27%) | 25 (11%) | ||
>12 months | 127 (61%) | 178 (80%) | ||
Kilometres ran in an average week (n) | ||||
<10 km a week | 103 (49%) | 94 (42%) | 2.77¶ | 0.43 |
10–20 km a week | 72 (34%) | 82 (37%) | ||
20–30 km a week | 28 (13%) | 35 (16%) | ||
>30 km a week | 7 (3%) | 12 (5%) | ||
Aim for ‘2013 Marikenloop’ (n) | ||||
5 km | 91 (43%) | 98 (44%) | 0.02¶ | 0.90 |
10 km | 119 (57%) | 125 (56%) |
*Data represent mean±SD or n (%).
†Test statistic for independent samples t-test.
‡n=387.
§n=250.
¶Test statistic for χ2 test.
**Test statistic for Fisher's exact test.
BMI, body mass index; GI, gastrointestinal.