Table 1 Median DTC (25th-75th percentiles) for each outcome and each dual-task combination

Locomotor tasks

Forward walking

 Walking speed

− 2.60%

(− 4.56; 1.42)

.394

− 1.04%

(− 4.49; 2.98)

.570

 Walking fluidity

1.72%

(− 2.55; 4.75)

.345

1.27%

(− 3.72; 2.96)

.842

 Cognitive accuracy

0.0%

(0.0; 0.0)

.157

0.0%

(0.0; 0.0)

.916

Forward walking with virtual agents

 Walking speed

2.79%

(− 1.27; 5.28)

.078

3.39%

(− 2.47; 4.88)

.211

 Walking fluidity

− 2.03%

(− 4.29; 1.20)

.100

0.0%

(− 7.98; 3.56)

.433

 Minimal distance

0.54%

(− 5.81; 5.64)

.650

− 1.31%

(− 9.18; 2.75)

.211

 Cognitive accuracy

0.0%

(0.0; 0.0)

.083

6.67%

(0.0; 7.69)

.017