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Table 5 Kinematic and spectral gait parameters (Mean ± SD)

From: Quantification and recognition of parkinsonian gait from monocular video imaging using kernel-based principal component analysis

  Non-PD (n = 12) Drug-Off (n = 12) Drug-On (n = 12) BMI AGE
Gait cycle time (s) 1.21 ± 0.08 1.16 ± 0.15 1.15 ± 0.12 N.S N.S
Stride length (cm) 105.48 ± 6.95 85.54 ± 17.21 ξ105.94 ± 22.90 N.S N.S
Walking velocity (cm/s) 87.35 ± 8.45 76.35 ± 22.84 93.68 ± 23.35 N.S N.S
Cadence (steps/min) 99.33 ± 6.04 106.45 ± 15.09 105.88 ± 12.33 N.S N.S
Step frequency (Hz) 1.66 ± 0.11 1.48 ± 0.34 ξ1.74 ± 0.18 N.S N.S
EL (%) 9.55 ± 7.84 16.21 ± 9.60 ξ9.40 ± 4.56 N.S N.S
EM (%) *75.07 ± 9.36 63.89 ± 11.63 72.58 ± 8.63 N.S N.S
EH (%) 15.37 ± 3.10 19.88 ± 8.25 18.00 ± 6.31 N.S N.S
  1. *, ξ are significant (p < 0.05) regarding the non-PD control and PD patients in the "Drug-Off" state and PD patients in the "Drug-Off" and "Drug-On" states. EL, EM, and EH are the percent of energy distributed in the low-frequency band, main-frequency band, and high-frequency band, respectively. Interactions between factors (BMI and AGE) and Groups (Non-PD and Drug-Off) were assessed by ANCOVA. N.S is non-significant (p > 0.05).