Introduction The overall objective of the study was to determine the relationship of ankle inversion sprain injury in the dominant and non-dominant leg among runners.
Methods This was a retrospective cohort study to test the relationship of ankle inversion sprain injury and leg dominance among runners. Thirty-three runners with ankle inversion sprain in the dominant leg and 27 runners who had ankle inversion sprain in the non-dominant leg were recruited from various universities and runner's clubs/associations. Patients who had medical records or charts in a clinic within Metro Manila were also included. The relative risk was computed to determine the strength of association between ankle inversion sprain injury and the risk factors. Linear regression was used to determine the strongest indicator of ankle inversion sprain injury in
the dominant and non-dominant leg, in relation to age, weight and height. An independent t-test was done to test the significance of means of two groups.
Results Runners aged 15-32 years (low age; RR = 1.14), who weighed 61-90 kg (high weight; RR = 1.11) and had a height of less than 170 cm (low height; RR = 1.08) were more likely to sustain ankle inversion sprain. The strongest indicator of ankle inversion sprain in both the dominant and non-dominant leg was low age (15-32 years). A height less than 170 cm (low height) was a significant factor in the dominant leg.
Conclusion There was a relationship between ankle inversion sprain injuries and low height (≤170 cm) in the dominant leg but not in the non-dominant leg. Low age (15-32 years) was the strongest indicator of ankle inversion sprain in both the dominant and non-dominant leg, however; it had a low association with a significance value of 0.18. There was an additional 25.9% increase in the risk of having ankle inversion sprain in the dominant and non-dominant leg if a runner had low age.