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Auricular Acupressure Can Modulate Pain Threshold.

Santoro A, Nori SL, Lorusso L, Secondulfo C, Monda M, Viggiano A - Evid Based Complement Alternat Med (2015)

Bottom Line: Participants of the first group received a 2-minute long session of AT, while participants of the second group received a 2-minute long session of sham treatment, consisting of a puncture/massage above the skin of the neck.Our results showed a significant higher pain threshold in the maximal test at 24 hours after AT compared to sham treatment.This result indicates for the first time that AT can increase pain tolerability, rather than affecting the minimal pain threshold.

View Article: PubMed Central - PubMed

Affiliation: Department of Medicine and Surgery, University of Salerno, 84084 Fisciano, Salerno, Italy.

ABSTRACT
The objective of our study was to investigate if auriculotherapy (AT) can modulate pain threshold. In our experiments, AT consisted of placing Vaccaria seeds over the "fingers point" of one ear. Two groups of healthy volunteers were enrolled for the study. Each subject was asked to perform an autoalgometric test developed by our group on three occasions: before, 1 hour after, AT and 24 hours after AT. Participants of the first group received a 2-minute long session of AT, while participants of the second group received a 2-minute long session of sham treatment, consisting of a puncture/massage above the skin of the neck. The autoalgometric test consisted of applying an increasing pressure with the finger-tips and finger-backs of four fingers by the subjects themselves (i.e., eight sites were evaluated) against a round-shaped needle for two times: until a minimum pain sensation (first time, minimal test) or a maximally tolerable pain sensation (second time, maximal test). Our results showed a significant higher pain threshold in the maximal test at 24 hours after AT compared to sham treatment. This result indicates for the first time that AT can increase pain tolerability, rather than affecting the minimal pain threshold.

No MeSH data available.


Mean ± S.E. values for the autoalgometric tests obtained before (basal) and 1 hour and 24 hours after the auricular acupressure (treated) or the placebo treatment (control). The values are expressed in percentage compared to the basal values. The asterisk indicates a significant difference compared with the control group at the same time point (P < 0.05).
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fig3: Mean ± S.E. values for the autoalgometric tests obtained before (basal) and 1 hour and 24 hours after the auricular acupressure (treated) or the placebo treatment (control). The values are expressed in percentage compared to the basal values. The asterisk indicates a significant difference compared with the control group at the same time point (P < 0.05).

Mentions: The mean pain threshold values obtained with the autoalgometer for both treated and control groups are reported in Table 2. One hour after the treatment with Vaccaria seed there was no significant difference in the pain threshold between the two experimental groups, either in the minimal test or in the maximal test. 24 hours after the treatment, there was an increase in pain threshold in the treated group compared to the control group for the maximal test, but not for the minimal test (Figure 3). A two-way ANOVA, considering the variables treatment (with two levels: treated and controls) and time (with three levels: time 0, 1 hour, and 24 hours), demonstrated a significant effect for the treatment × time interaction (the F-value with 1 and 27 degrees of freedom was 11.7; the P value was <0.01); the post hoc test demonstrated a significant difference between the treated and the control groups at 24 hours from the treatment (P < 0.05).


Auricular Acupressure Can Modulate Pain Threshold.

Santoro A, Nori SL, Lorusso L, Secondulfo C, Monda M, Viggiano A - Evid Based Complement Alternat Med (2015)

Mean ± S.E. values for the autoalgometric tests obtained before (basal) and 1 hour and 24 hours after the auricular acupressure (treated) or the placebo treatment (control). The values are expressed in percentage compared to the basal values. The asterisk indicates a significant difference compared with the control group at the same time point (P < 0.05).
© Copyright Policy - open-access
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4508478&req=5

fig3: Mean ± S.E. values for the autoalgometric tests obtained before (basal) and 1 hour and 24 hours after the auricular acupressure (treated) or the placebo treatment (control). The values are expressed in percentage compared to the basal values. The asterisk indicates a significant difference compared with the control group at the same time point (P < 0.05).
Mentions: The mean pain threshold values obtained with the autoalgometer for both treated and control groups are reported in Table 2. One hour after the treatment with Vaccaria seed there was no significant difference in the pain threshold between the two experimental groups, either in the minimal test or in the maximal test. 24 hours after the treatment, there was an increase in pain threshold in the treated group compared to the control group for the maximal test, but not for the minimal test (Figure 3). A two-way ANOVA, considering the variables treatment (with two levels: treated and controls) and time (with three levels: time 0, 1 hour, and 24 hours), demonstrated a significant effect for the treatment × time interaction (the F-value with 1 and 27 degrees of freedom was 11.7; the P value was <0.01); the post hoc test demonstrated a significant difference between the treated and the control groups at 24 hours from the treatment (P < 0.05).

Bottom Line: Participants of the first group received a 2-minute long session of AT, while participants of the second group received a 2-minute long session of sham treatment, consisting of a puncture/massage above the skin of the neck.Our results showed a significant higher pain threshold in the maximal test at 24 hours after AT compared to sham treatment.This result indicates for the first time that AT can increase pain tolerability, rather than affecting the minimal pain threshold.

View Article: PubMed Central - PubMed

Affiliation: Department of Medicine and Surgery, University of Salerno, 84084 Fisciano, Salerno, Italy.

ABSTRACT
The objective of our study was to investigate if auriculotherapy (AT) can modulate pain threshold. In our experiments, AT consisted of placing Vaccaria seeds over the "fingers point" of one ear. Two groups of healthy volunteers were enrolled for the study. Each subject was asked to perform an autoalgometric test developed by our group on three occasions: before, 1 hour after, AT and 24 hours after AT. Participants of the first group received a 2-minute long session of AT, while participants of the second group received a 2-minute long session of sham treatment, consisting of a puncture/massage above the skin of the neck. The autoalgometric test consisted of applying an increasing pressure with the finger-tips and finger-backs of four fingers by the subjects themselves (i.e., eight sites were evaluated) against a round-shaped needle for two times: until a minimum pain sensation (first time, minimal test) or a maximally tolerable pain sensation (second time, maximal test). Our results showed a significant higher pain threshold in the maximal test at 24 hours after AT compared to sham treatment. This result indicates for the first time that AT can increase pain tolerability, rather than affecting the minimal pain threshold.

No MeSH data available.