Comparison of 2 methods of non-invasive treatment between transcutaneous electrical stimulation and pulsed electromagnetic field stimulation as replacement of invasive manual acupuncture.

Acupuncture & electro-therapeutics research · 2012 · Benefit · Low evidence

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BenefitLow evidencePaper 3166

Study snapshot

PublicationAcupuncture & electro-therapeutics research · 2012

Study typerandomized_trial

Reported directionBenefit

Evidence ratingLow

Abstract

The aim of this study was to find the non-invasive optimal alternative method for Manual Acupuncture. Existing researches had reported that Transcutaneous Electrical Acupoint Stimulation (TEAS) was an effective treatment method instead of manual acupuncture. In place of the TEAS, we suggested the Pulsed Electromagnetic Fields (PEMFs). Thus, we designed the PEMFs system which can stimulate only an acupoint. There have been no researches which reported therapeutic effect when stimulating at an identical acupoint by TEAS and PEMFs. Hence, this study investigated the therapeutic effect on the muscle fatigue after the strenuous knee extension/flexion exercise by two stimulations. We selected the stimulation method of both TEAS and PEMFs by using 2Hz biphasic rectangular wave pulse and pulse width 0.2ms. The magnetic flux was the 30.92mT (309.2gauss) at 2 Hz. The electromyogram (EMG) and the maximal voluntary contraction (MVC) at rectus femoris were measured. The Median Frequency (MF) at TEAS group was significantly effective at 6 minutes (p=0.499). The PEMFs group was recovered to the MF rapidly after 4 minutes (p=0.166). The results of the peak torque indicated that both non-stimulation group and TEAS group did not recover to the peak torque at pre-exercise during the recovery period (p<0.05). In contrast, the significant treatment effect of PEMFs group was found after 14 minutes (p=0.135). The results of this study demonstrated that PEMFs were better than TEAS as a non-invasive method to replace the manual acupuncture.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typerandomized_trial

Effect directionbenefit

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthLowConfidence: 66% · Peer reviewed: yes

Main findings

This clinical trial compared transcutaneous electrical acupoint stimulation (TEAS) versus pulsed electromagnetic field stimulation (PEMFs) at an identical acupoint after strenuous knee extension/flexion exercise. The abstract reports faster recovery of median frequency (MF) in the PEMF group (recovered after 4 minutes) than in the TEAS group (reported as effective at 6 minutes), and peak torque recovery to pre-exercise levels was reported only in the PEMF group (significant effect after 14 minutes), leading the authors to conclude PEMFs were better than TEAS as a non-invasive replacement for manual acupuncture.

Outcomes measured

muscle fatigue recovery after strenuous knee extension/flexion exercise
electromyogram (EMG) measures at rectus femoris
maximal voluntary contraction (MVC) at rectus femoris
median frequency (MF)
peak torque

Limitations

Randomization is not explicitly stated in the abstract.
Sample size is not reported.
Population characteristics are not described.
Exposure duration and treatment protocol details beyond pulse parameters are not provided.
Some p-values reported as 'significant' appear inconsistent with conventional thresholds (e.g., p=0.499, p=0.166, p=0.135), creating uncertainty about statistical interpretation.

View raw extracted JSON

{
  "study_type": "randomized_trial",
  "exposure": {
    "band": null,
    "source": "pulsed electromagnetic field stimulation (PEMFs) at acupoint",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "muscle fatigue recovery after strenuous knee extension/flexion exercise",
    "electromyogram (EMG) measures at rectus femoris",
    "maximal voluntary contraction (MVC) at rectus femoris",
    "median frequency (MF)",
    "peak torque"
  ],
  "main_findings": "This clinical trial compared transcutaneous electrical acupoint stimulation (TEAS) versus pulsed electromagnetic field stimulation (PEMFs) at an identical acupoint after strenuous knee extension/flexion exercise. The abstract reports faster recovery of median frequency (MF) in the PEMF group (recovered after 4 minutes) than in the TEAS group (reported as effective at 6 minutes), and peak torque recovery to pre-exercise levels was reported only in the PEMF group (significant effect after 14 minutes), leading the authors to conclude PEMFs were better than TEAS as a non-invasive replacement for manual acupuncture.",
  "effect_direction": "benefit",
  "limitations": [
    "Randomization is not explicitly stated in the abstract.",
    "Sample size is not reported.",
    "Population characteristics are not described.",
    "Exposure duration and treatment protocol details beyond pulse parameters are not provided.",
    "Some p-values reported as 'significant' appear inconsistent with conventional thresholds (e.g., p=0.499, p=0.166, p=0.135), creating uncertainty about statistical interpretation."
  ],
  "evidence_strength": "low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "pulsed electromagnetic fields",
    "PEMF",
    "transcutaneous electrical acupoint stimulation",
    "TEAS",
    "manual acupuncture replacement",
    "muscle fatigue",
    "electromyogram",
    "maximal voluntary contraction",
    "median frequency",
    "peak torque",
    "2 Hz",
    "30.92 mT"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3727/036012912x13831831256294
PubMed: 23409610

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