Table 2 Sensations felt by athletes during high-definition (HD), conventional, and active sham transcranial direct current stimulation (n = 12).

From: Acute effect of high-definition and conventional tDCS on exercise performance and psychophysiological responses in endurance athletes: a randomized controlled trial

Sensation

High definition

Conventional

Sham

χ2

P

Itching

1.0 (0.0–2.0)

1.0 (0.0–1.5)

1.5 (0.0–2.0)

0.261

0.878

Pain

0.0

0.0

0.0

N/A

N/A

Burning

0.0 (0.0–0.0)

0.0 (0.0–0.75)

0.0 (0.0–0.75)

1.0

0.607

Warmth/Heat

0.0 (0.0–1.0)

0.0 (0.0–0.75)

0.0 (0.0–1.0)

1.08

0.584

Pinching

1.0 (1.0–1.0)

1.5 (1.0–2.0)

1.0 (1.0–2.0)

0.75

0.687

Metallic/Iron taste

0.0 (0.0–0.0)

0.0 (0.0–0.0)

0.0 (0.0–0.0)

2.0

0.368

Fatigue

0.0

0.0

0.0

N/A

N/A

Beginning

1.0 (1.0–1.75)

1.0 (1.0–1.0)

1.0 (1.0–1.75)

0.5

0.779

Duration

2.0 (1.0–3.0)

3.0 (2.0–3.0)

2.0 (1.25–3.0)

3.56

0.169

Affect performance

0.0

0.0

0.0

N/A

N/A

  1. Data described as median (interquartile range); N/A = not applicable.