| 3D gait analysis | Maximal voluntary isometric contractions | |
|---|---|---|
| DATA COLLECTION | ||
| Kinematics and kinetics sEMG of rectus femoris, medial hamstrings, tibialis anterior, gastrocnemius (medial) and gluteus medius | Knee extension Knee flexion Dorsiflexion Plantar flexion |
|
| DATA ANALYSIS | ||
| Calculation of tVAF1 using NNMF on sEMG data from 10 concatenated steps Non-dimensional walking speed | Calculation of torque normalized to bodyweight, averaged over three trials | |
| Main research question | Sub question | |
| STATISTICAL ANALYSIS | ||
| Kruskal-Wallis H-test with post-hoc Mann-Whitney U-test to determine differences in tVAF1, walking speed and maximal voluntary contractions between the three groups | Spearman's rank correlation coefficient with classification of Altman | |
DOFs, degrees of freedom; N, number; NNMF, non-negative matrix factorization; sEMG, surface electromyography; tVAF1, total variance accounted for by one synergy.