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Table 3 Results of correlation analysis between gait variables calculated from the motion capture and from the AlphaPose pose tracking

From: Concurrent validity of human pose tracking in video for measuring gait parameters in older adults: a preliminary analysis with multiple trackers, viewing angles, and walking directions

Gait variable Eye-level camera Top camera
R p R p R p R p
Front view walks Back view walks Front view walks Back view walks
Individual steps Individual steps
Cadence 0.99  < 0.001 1.00  < 0.001 0.97  < 0.001 0.97  < 0.001
Step time 0.71  < 0.001 0.71  < 0.001 0.48  < 0.001 0.31  < 0.001
Step width 0.54  < 0.001 0.31  < 0.001 0.62  < 0.001 0.25  < 0.001
Step time CV 0.17 0.40 − 0.05 0.85 0.03 0.87 0.30 0.20
Step width CV 0.45 0.02 0.36 0.12 0.36 0.07 0.30 0.20
eMOS 0.45  < 0.001 0.14 0.03 0.45  < 0.001 0 0.95
Gait variable Eye-level camera Top camera
R p R p R p R p
Front view walks Back view walks Front view walks Back view walks
Mean of all steps Mean of all steps
Cadence 1.00  < 0.001 1.00  < 0.001 0.99  < 0.001 0.98  < 0.001
Step time 1.00  < 0.001 1.00  < 0.001 0.99  < 0.001 0.99  < 0.001
Step width 0.57 0.07 0.42 0.20 0.66 0.03 0.58 0.06
Step time CV 0.52 0.10 0.22 0.51 0.13 0.71 0.50 0.12
Step width CV 0.38 0.25 0.41 0.21 0.33 0.33 0.23 0.50
eMOS 0.61 0.11 0.66 0.04 0.58 0.13 0.60 0.09