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Table 3 Effect sizes (Cohen’s dz) between the walking tasks for both concentrations of O2Hb and HHb and gait performance

From: Measuring prefrontal cortical activity during dual task walking in patients with Parkinson’s disease: feasibility of using a new portable fNIRS device

  Walking while serially subtracting > counting Walking while reciting digit spans > counting Walking while serially subtracting > reciting digit spans
fNIRS
 O2Hb left .29 .08 .36
 O2Hb right .31 .20 .27
 HHb left −.13 −.36 .43
 HHb right −.07 −.18 .42
Gait performance
 Gait speed (m/s) −.22 −.72 .40
 Cadence (steps/min) −.33 −.15 −.23
 Stride length (m) −.09 −.93 .73
 Stride length variability (%) .11 1.04 −.32
 Stride time (s) .30 .16 .18
 Stride time variability (%) −.05 −.20 .24
  1. Effect sizes larger than 0.5 (medium effect) printed in bold