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Table 3 Intergroup secondary outcomes

From: Selective nociceptive modulation using a novel prototype of transcutaneous kilohertz high-frequency alternating current stimulation: a crossover double-blind randomized sham-controlled trial

Outcomes

(units)

Mean (CI 95%)

Change 30 kHz minus Change Sham

Change 40 kHz minus Change Sham

Change 50 kHz minus Change Sham

During

intervention (T1)

Post intervention

(T2)

15 min after intervention

(T3)

During

intervención (T1)

Post intervention

(T2)

15 min after intervention

(T3)

During

intervención (T1)

Post intervention

(T2)

15 min after intervention

(T3)

 

Two-point discrimination (mm)

0.0

(-0.3 to 0.3)

-0.1

(-0.4 to 0.2)

-0.2

(-0.7 to 0.2)

0.0

(-0.3 to 0.4)

0.1

(-0.3 to 0.5)

-0.1

(-0.5 to 0.2)

0.1

(-0.2 to 0.4)

0.1

(-0.2 to 0.3)

-0.1

(-0.5 to 0.3)

 

Pinch Strength

(Kg/f)

-0.2

(-0.7 to 0.4)

-0.1

(-0.7 to 0.6)

0.0

(-0.7 to 0.7)

-0.1

(-0.7 to 0.4)

-0.1

(-0.8 to 0.6)

-0.1

(-0.8 to 0.6)

0.1

(-0.5 to 0.6)

-0.2

(-0.8 to 0.5)

0.0

(-0.6 to 0.7)

 

SNAP amplitude (µV)

1.1

(-4.6 to 6.8)

0.4

(-4.2 to 4.9)

3.7

(-4.7 to 12.2)

1.9

(-4.0 to 7.8)

1.6

(-6.0 to 9.1)

1.8

(-6.7 to 10.3)

1.1

(-3.9 to 6.1)

0.5

(-3.8 to 4.8)

0.9

(-3.1 to 4.9)

 

SNAP velocity (m/s)

0.4

(-0.4 to 1.1)

0.4

(-0.4 to 1.2)

0.6

(-0.1 to 1.4)

0.0

(-0.8 to 0.7)

0.3

(-0.4 to 1.1)

0.1

(-0.8 to 1.1)

0.4

(-0.4 to 1.1)

0.8*

(0.2 to 1.3)

0.9*

(0.2 to 1.6)

 

Skin temperature (ºC)

0.4

(-0.4 to 1.3)

0.3

(-0.7 to 1.3)

0.6

(-0.5 to 1.6)

-0.1

(-0.8 to 0.6)

-0.2

(-1.0 to 0.7)

-0.2

(-1.1 to 0.7)

0.1

(-0.5 to 0.8)

0.1

(-0.6 to 0.8)

0.2

(-0.6 to 1.0)

 
  1. Data are expressed as mean and 95& Confidence Interval. Bold values denote statistically significant difference * p < 0.05. SNAP: sensory nerve action potentials