During the curve sprinting the velocity decreases proportionally to the radius. It has been documented that athletes in inner lanes could be at a biomechanical disadvantage compared to outer lanes. Objective: Describe if there are any differences between legs distribution in spatiotemporal parameters when curve sprinting. Material and method: Following the basis of the PRISMA statement, was carried out using PubMed, SportDiscus and MEDLINE databases. Study selection: The selection of articles was carried out by two authors, and in case of discrepancy a third author would intervene. The selection of the articles was carried out by two authors, and in case of discrepancy a third author would intervene. The inclusion criteria were established in which studies focused on analyzing spatiotemporal parameters in the center of the curve such as step frequency, step length, flight time and ground contact time were included. Results: 982 studies were found but only 6 fulfilled the inclusion criteria. These studies analyzed race in external track curve in at least one radius/ track with elite athletes. Analysis was reported in 5 different radius and only one study reported significant differences in velocity, two studies in step frequency and step length, one in flight time, and 5 studies reported significant differences in ground contact time in lanes: one, two, four, five and eight (radius 36.5, 37.72, 41.41, 45.10 track approved by Word athletic). Ground contact time was greater for the inside leg in seven different study conditions. Only one study showed significant different between lane: 2, 4 and 8 (radius 37.72, 41.41 and 45.10) to ground contact time, showing greater times for the internal lanes in both legs. Conclusions: The ground contact time was longer for the inside leg, which suggests that the inside leg decreases its performance during sprint curve. No relevant results were shown in velocity, step frequency, step length and flight time
