Evidence map›Paper›PMID 26316808›Full record

ArticleJournal of pain research2015

Skin impedance is not a factor in transcutaneous electrical nerve stimulation effectiveness.

Carol Gt Vance, Barbara A Rakel, Dana L Dailey, Kathleen A Sluka

Open access · goldAbstract read
In one paragraph

Article in Journal of pain research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.5field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Carol Gt VanceDepartment of Physical Therapy and Rehabilitation Science, University of Iowa Carver College of Medicine, IA, USA.
Barbara A RakelDepartment of Physical Therapy and Rehabilitation Science, University of Iowa Carver College of Medicine, IA, USA ; University of Iowa, College Nursing Iowa City, IA, USA.
Dana L DaileyDepartment of Physical Therapy and Rehabilitation Science, University of Iowa Carver College of Medicine, IA, USA.
Kathleen A SlukaDepartment of Physical Therapy and Rehabilitation Science, University of Iowa Carver College of Medicine, IA, USA ; University of Iowa, College Nursing Iowa City, IA, USA.
University of Iowa · US

Funding

Fibromyalgia Activity Study with TENS "FAST"UM1AR063381 · NIAMS · UNIVERSITY OF IOWA · PI CROFFORD, LESLIE J, SLUKA, KATHLEEN A · 2013 to 2017
$3.4M
NIAMS NIH HHS UM1 AR063381
6 · The paper itself

Abstract

objectiveTranscutaneous electrical nerve stimulation (TENS) is a nonpharmacological intervention used to manage pain using skin surface electrodes. Optimal electrode placement is unclear. We hypothesized that better analgesia would occur if electrodes were placed over sites with lower skin impedance. Optimal site selection (OSS) and sham site selection (SSS) electrode sites on the forearm were identified using a standard clinical technique.

methodsExperiment 1 measured skin impedance in the forearm at OSS and SSS. Experiment 2 was a crossover design double-blind randomized controlled trial comparing OSS-TENS, SSS-TENS, and placebo TENS (P-TENS) to confirm differences in skin impedance between OSS and SSS, and measure change in pressure pain threshold (PPT) following a 30-minute TENS treatment. Healthy volunteers were recruited (ten for Experiment 1 [five male, five female] and 24 for Experiment 2 [12 male, 12 female]). TENS was applied for 30 minutes at 100 Hz frequency, 100 µs pulse duration, and "strong but nonpainful" amplitude.

resultsExperiment 1 results demonstrate significantly higher impedance at SSS (17.69±1.24 Ω) compared to OSS (13.53±0.57 Ω) (P=0.007). For Experiment 2, electrode site impedance was significantly higher over SSS, with both the impedance meter (P=0.001) and the TENS unit (P=0.012) compared to OSS. PPT change was significantly greater for both OSS-TENS (P=0.024) and SSS-TENS (P=0.025) when compared to P-TENS. PPT did not differ between the two active TENS treatments (P=0.81).

conclusionSkin impedance is lower at sites characterized as optimal using the described technique of electrode site selection. When TENS is applied at adequate intensities, skin impedance is not a factor in attainment of hypoalgesia of the forearm in healthy subjects. Further investigation should include testing in patients presenting with painful conditions.

Indexed as

electrode site selectionimpedancepaintranscutaneous electrical nerve stimulation

Identifiers

PMID26316808
PMCPMC4547643
OpenAlexW1834559288

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.