Transference of outdoor gait-training to treadmill running biomechanics and strength measures: A randomized controlled trial.

Runners with exercise-related lower leg pain often get gait-training outdoors using wearable sensors to shorten ground contact time, but it wasn't clear whether these changes would carry over to treadmill running, which is often used for clinical assessment. This randomized controlled trial compared a 4-week outdoor gait-training program plus home exercises (FBHE) against home exercises alone (HE) in 17 runners with this condition (FBHE: 9 participants; HE: 8 participants). Researchers measured treadmill running biomechanics and lower extremity strength at baseline and after 4 weeks. The FBHE group showed significantly shorter ground contact time on the treadmill at follow-up compared to both their own baseline and the HE group, along with significantly higher cadence and lower loading impulse (a measure of force over time) compared to HE.

Strength measures did not differ significantly between groups once multiple comparisons were accounted for. The small sample size limits how confidently these findings can be generalized.

If you've dealt with lower leg pain from running, you may know that gait-training programs using wearable sensors have helped some runners feel better and change how their foot contacts the ground outdoors. This study asked whether those outdoor changes actually show up when the same runners go on a treadmill, which is how many clinics assess running form.

Researchers split 17 runners with this type of leg pain into two groups: one did outdoor gait-training with sensors plus home exercises, the other did home exercises only, over 4 weeks. The group that did the outdoor gait-training showed notably shorter ground contact time, faster step rate, and lower loading forces during treadmill running afterward, compared to the home-exercise-only group. Strength measurements didn't show a significant difference between the two groups.

Because only 17 people participated, these results give an early signal rather than a definitive answer about how well outdoor training transfers to treadmill settings, and larger studies would help confirm the pattern.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This RCT examined whether a 4-week outdoor gait-retraining intervention using wearable sensors, aimed at reducing ground contact time in runners with exercise-related lower leg pain, produces measurable changes when those runners are subsequently assessed on a treadmill. Seventeen participants were randomized to FBHE (gait-training plus home exercises, n=9) or HE alone (n=8), with treadmill biomechanics and clinical strength testing conducted at baseline and 4 weeks using repeated measures MANOVA. The FBHE group demonstrated significantly reduced contact time (MD range -39 to -42 ms) relative to both baseline and the HE group, along with significantly increased cadence (+21 steps/min) and decreased loading impulse (-51) compared to HE at follow-up.

These findings suggest that gait adaptations trained outdoors can transfer to the treadmill environment, which is relevant given that treadmills are frequently used for clinical gait assessment. Strength outcomes did not differ significantly between groups after adjusting for multiple comparisons, indicating the intervention's effects were specific to biomechanical rather than strength measures in this sample.

The small sample size (n=17 total) constrains statistical power and generalizability, and replication in larger cohorts would strengthen confidence in these transfer effects.