Deqi sensations without cutaneous sensory input: results of an RCT
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vor 14 Jahren
Background: Deqi is defined in relation to acupuncture needling as
a sensory perception of varying character. In a recently published
sham laser validation study, we found that subjects in the verum
and the sham laser group experienced deqi sensations. Therefore, we
aim to further analyze whether the perceptions reported in the two
study arms were distinguishable and whether expectancy effects
exhibited considerable impact on our results. Methods: A detailed
re-analysis focusing on deqi sensations was performed from data
collected in a previously published placebo-controlled,
double-blind, clinical cross-over trial for a sham laser
evaluation. Thirty-four healthy volunteers (28 +/- 10.7 years; 16
women, 18 men) received two laser acupuncture treatments at three
acupuncture points LI4 (hegu), LU7 (lieque), and LR3 (taichong);
once by verum laser and once using a sham device containing an
inactive laser in randomized order. Outcome measures were
frequency, intensity (evaluated by visual analogue scale; VAS), and
quality of the subjects' sensations perceived during treatments
(assessed with the "acupuncture sensation scale"). Results: Both,
verum and the sham laser acupuncture result in similar deqi
sensations with regard to frequency (p-value = 0.67), intensity
(p-value = 0.71) and quality (p-values between 0.15 - 0.98). In
both groups the most frequently used adjectives to describe these
perceptions were "spreading"
a sensory perception of varying character. In a recently published
sham laser validation study, we found that subjects in the verum
and the sham laser group experienced deqi sensations. Therefore, we
aim to further analyze whether the perceptions reported in the two
study arms were distinguishable and whether expectancy effects
exhibited considerable impact on our results. Methods: A detailed
re-analysis focusing on deqi sensations was performed from data
collected in a previously published placebo-controlled,
double-blind, clinical cross-over trial for a sham laser
evaluation. Thirty-four healthy volunteers (28 +/- 10.7 years; 16
women, 18 men) received two laser acupuncture treatments at three
acupuncture points LI4 (hegu), LU7 (lieque), and LR3 (taichong);
once by verum laser and once using a sham device containing an
inactive laser in randomized order. Outcome measures were
frequency, intensity (evaluated by visual analogue scale; VAS), and
quality of the subjects' sensations perceived during treatments
(assessed with the "acupuncture sensation scale"). Results: Both,
verum and the sham laser acupuncture result in similar deqi
sensations with regard to frequency (p-value = 0.67), intensity
(p-value = 0.71) and quality (p-values between 0.15 - 0.98). In
both groups the most frequently used adjectives to describe these
perceptions were "spreading"
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