Descriptive statistics of the participants (n=836)
| Characteristics | Unit/qualifier | All participants |
| Participants’ characteristics | ||
| Age | Years | 40.3±9.9 |
| Sex | Male | 513 (61.4%) |
| Female | 323 (38.6%) | |
| Height | cm | 174±9 |
| Body mass | kg | 73.0±12.3 |
| Body mass index | kg/m2 | 24.0±2.9 |
| Proportion of fat mass | % | 22.4±7.2 |
| Previous Injury | No | 700 (83.7%) |
| Yes | 136 (16.3%) | |
| Running experience | Years | 6 (3–13) |
| Regularity (last 12 months) | Months | 12 (6–12) |
| Running participation (follow-up) | ||
| Running frequency | Sessions per week | 1.4 (1.0–2.0) |
| Mean session duration | min | 50 (40–61) |
| Mean session distance | km | 8.0 (6.0–10.0) |
| Mean session intensity | a.u. | 3.8 (3.1–4.4) |
| Mean speed | km/hour | 9.7 (8.8–10.6) |
| Symmetry Index | ||
| Steps analysed | n | 316±49 |
| Leg length | % | 0.2 (0–0.5) |
| Step length | % | 1.4 (0.7–2.6) |
| Contact time | % | 1.7 (0.7–2.9) |
| Flight time | % | 1.0 (0.5–1.8) |
| Duty factor | % | 1.6 (0.7–2.9) |
| Vertical displacement of CoM | % | 3.3 (1.5–5.5) |
| Vertical stiffness | % | 4.1 (1.9–7.2) |
| Peak vertical force | % | 2.0 (0.9–3.4) |
| Peak breaking force | % | 8.7 (4.1–14.6) |
| Peak propulsive force | % | 5.3 (2.5–9.4) |
| VIP | % | 11.5 (4.8–21.5) |
| Time to VIP | % | 4.5 (2.0–8.1) |
| Vertical instantaneous loading rate | % | 13.0 (5.3–23.8) |
| Vertical average loading rate | % | 15.0 (6.4–27.1) |
A non-normally distributed variable is presented as median (IQR).
a.u., arbitrary unit; CoM, the centre of mass; VIP, vertical impact peak.