This prospective, randomised, controlled, longitudinal and triple-blind masked clinical design was performed in patients derived to the rehabilitation service of Fremap Sevilla Hospital after an laboral accident with surgery and not surgery traumatic injuries.~After that, participants were questioned about their personal data and the inclusion and exclusion criteria. All agreed to participate and provided signed informed consent prior to data collection.~Participants were allocated according to the inclusion and exclusion criteria into an intervention and a control group. The intervention was performed in two weeks. Patients were randomised into the intervention (anti-gravity treadmill) or control (standard protocol) rehabilitation group.~Previous data is taken from the Postural Stability, Stability Limits and  m-CTSIB tests on the Biodex Balance System SD platform.~The control group will perform the hospital's standard protocol for these injuries while the experimental group will also be added the anti-gravity treadmill in Alter G once a day.~At 2 week post-treatment, subjects were tested again. All patients were able to complete all rehabilitation sessions and balance tests.~Sample size assessment: accepting an alpha risk of 0.05 and a beta risk of 0.1 in a bilateral contrast, 15 subjects in each group are needed to detect a minimum difference of 15% between two groups, assuming that there are 2 groups and a standard deviation of 12%. A 10% rate of loss of insurance has been estimated.~Statistical analysis plan: the statistical analysis will be carried out using IBM-SPSS Statistics 24 software. The Kolmogorov-Smirnov test will be applied to test the distribution of the data. Student's t-test will be applied for paired variables when the data have a parametric distribution. The Mann-Whitney U test will be used to analyse data with a non-parametric distribution. The Chi-Squared will be used to compared qualitative variables. The confidence level used will be 95% (0.05) and the power of the study will be 90% (0.1).
This prospective randomised study aimed to test the investigators's hypothesis that anti-gravity treadmill therapy has beneficial effects on postural stability tests over a standard rehabilitation protocol in patients who have suffered traumatic injuries of the lower limb, demonstrating an improvement in the Biodex platform's values.~The total of 30 patients participated in this study (n=30). There were 15 subjects in control group and 15 in experimental group.