Ten individual balance sessions, supervised by a physical therapist, with 50-60 min duration per session, within a maximal five-week period

The Biodex Stability System, which is a dynamic tilting platform, was used for assessment. The medial-lateral stability index corresponded to the variance of foot platform displacement in the frontal plane, and it was measured in single-leg stance, for the sprained leg, without footwear. Three 20-sec trials were performed, with open eyes, and the mean score was used for analysis.

The Biodex Stability System, which is a dynamic tilting platform, was used for assessment. The overall stability index corresponded to the variance of foot platform overall displacement, and it was measured in single-leg stance, for the sprained leg, without footwear. Three 20-sec trials were performed, with open eyes, and the mean score was used for analysis.

Assessement was performed with a goniometer. Participants actively dorsiflexed the sprained ankle, while being in long sitting, on a physical therapy table. The mean score of three measurements was used for analysis.

The main component of the Greek version of the short form of McGill Pain Questionnaire (GR-SFMPQ) was used for the assessment of pain sensation of the sprained ankle. This consists of 15 descriptive adjectives for the pain sensation (11 sensory and 4 affective), which are self-rated according to their intensity level on a 4-point rating scale (0 = none, 1 = mild, 2 = moderate, 3 = severe). The total rating score (minimum = 0, maximum = 45) of the main component of the GR-SFMPQ was used for data analysis, with higher values representing a worse pain sensation.

The second component of the Greek version of the short form of McGill Pain Questionnaire, which is a visual analogue scale (VAS), was used for the assessment. The VAS is a horizontal 10-cm line with clearly defined boundaries: 0 cm = 'No pain' and 10.0 cm = 'worst possible pain'. partipants made a mark on the line at the point that better described the average pain intensity for their sprained ankle, during the week before testing. The distance marked from the 'no pain' point was measured in mm and was used for data analysis.

The third component of the Greek version of the short form of McGill Pain Questionnaire, which is a 6-point verbal rating scale, was used for the assessment. Participants noted what word at the time completing the questionnaire would best describe their pain sensation for the sprained ankle (scoring: no pain = 0, mild = 1, discomforting = 2, distressing = 3, horrible = 4, excruciating = 5). The score corresponding to the noted word was used for data analysis, with higher values representing a worse pain sensation.

The Biodex isokinetic dynamometer was used for assessment. During testing, participants were blindfolded, in the seated position, with footwear on.The internal goniometer of Biodex recorded the degrees of error for the active repositioning of 10° dorsiflexion (non-weight-bearing) for the sprained ankle, and the mean of three trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During testing, participants were blindfolded, in the seated position, with footwear on.The internal goniometer of Biodex recorded the degrees of error for the active repositioning of 15° plantar flexion (non-weight-bearing) for the sprained ankle, and the mean of three trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During testing, participants were blindfolded, in the seated position, with footwear on.The internal goniometer of Biodex recorded the degrees of error for the active repositioning of 30° plantar flexion (non-weight-bearing) for the sprained ankle, and the mean of three trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle dorsiflexor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle dorsiflexor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle plantar flexor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle plantar flexor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot evertor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot evertor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot invertor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot invertor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Total of all reporting groups

Participants hopped, using the sprained leg, as fast as possible, a six-meter distance. Three trials were performed, and the mean hopping time was used for analysis.

The rising on heel test was used, and participants rose on the heel of the sprained leg, as many times as possible.

Scoring:10 points for >40 rises, 5 points for 30-39 rises, 0 points for <30 rises.

The rising on toes test was used, and participants rose on the toes of the sprained leg, as many times as possible. Scoring:10 points for >40 rises, 5 points for 30-39 rises, 0 points for <30 rises.

The Biodex Stability System, which is a dynamic tilting platform, was used for assessment. The anterior-posterior stability index corresponded to the variance of foot platform displacement in the sagittal plane, and it was measured in single-leg stance, for the sprained leg, without footwear. Three 20-sec trials were performed, with open eyes, and the mean score was used for analysis.

The Biodex Stability System, which is a dynamic tilting platform, was used for assessment. The medial-lateral stability index corresponded to the variance of foot platform displacement in the frontal plane, and it was measured in single-leg stance, for the sprained leg, without footwear. Three 20-sec trials were performed, with open eyes, and the mean score was used for analysis.

The Biodex Stability System, which is a dynamic tilting platform, was used for assessment. The overall stability index corresponded to the variance of foot platform overall displacement, and it was measured in single-leg stance, for the sprained leg, without footwear. Three 20-sec trials were performed, with open eyes, and the mean score was used for analysis.

Assessement was performed with a goniometer. Participants actively dorsiflexed the sprained ankle, while being in long sitting, on a physical therapy table. The mean score of three measurements was used for analysis.

The main component of the Greek version of the short form of McGill Pain Questionnaire (GR-SFMPQ) was used for the assessment of pain sensation of the sprained ankle. This consists of 15 descriptive adjectives for the pain sensation (11 sensory and 4 affective), which are self-rated according to their intensity level on a 4-point rating scale (0 = none, 1 = mild, 2 = moderate, 3 = severe). The total rating score (minimum = 0, maximum = 45) of the main component of the GR-SFMPQ was used for data analysis, with higher values representing a worse pain sensation.

The second component of the Greek version of the short form of McGill Pain Questionnaire, which is a visual analogue scale (VAS), was used for the assessment. The VAS is a horizontal 10-cm line with clearly defined boundaries: 0 cm = 'No pain' and 10.0 cm = 'worst possible pain'. partipants made a mark on the line at the point that better described the average pain intensity for their sprained ankle, during the week before testing. The distance marked from the 'no pain' point was measured in mm and was used for data analysis.

The third component of the Greek version of the short form of McGill Pain Questionnaire, which is a 6-point verbal rating scale, was used for the assessment. Participants noted what word at the time completing the questionnaire would best describe their pain sensation for the sprained ankle (scoring: no pain = 0, mild = 1, discomforting = 2, distressing = 3, horrible = 4, excruciating = 5). The score corresponding to the noted word was used for data analysis, with higher values representing a worse pain sensation.

The Biodex isokinetic dynamometer was used for assessment. During testing, participants were blindfolded, in the seated position, with footwear on.The internal goniometer of Biodex recorded the degrees of error for the active repositioning of 10° dorsiflexion (non-weight-bearing) for the sprained ankle, and the mean of three trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During testing, participants were blindfolded, in the seated position, with footwear on.The internal goniometer of Biodex recorded the degrees of error for the active repositioning of 15° plantar flexion (non-weight-bearing) for the sprained ankle, and the mean of three trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During testing, participants were blindfolded, in the seated position, with footwear on.The internal goniometer of Biodex recorded the degrees of error for the active repositioning of 30° plantar flexion (non-weight-bearing) for the sprained ankle, and the mean of three trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the ankle joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

The Biodex isokinetic dynamometer was used for assessment. During isokinetic testing of the subtalar joint, participants were in the seated position, with footwear on. Measurements were taken for the sprained leg, and the mean of five maximal trials was used for analysis.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle dorsiflexor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle dorsiflexor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle plantar flexor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the ankle plantar flexor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot evertor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot evertor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the peroneus longus muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot invertor muscles, at 30°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Two surface electrodes and a ground electrode were used for assessment. Measurements were taken for the sprained leg, during isokinetic testing of the foot invertor muscles, at 120°/sec speed, with the Biodex dynamometer. Normalized values of the electromyographic (EMG) signals were used for analysis, and EMG activity during maximal voluntary isometric contraction of the anterior tibialis muscle was used as the reference value for normalization.

Supervised Balance Training