title: Influence of different frequencies of transcutaneous electrical nerve stimulation on the threshold and pain intensity in young subjects.
abstract: OBJECTIVE
  To investigate the effects of different transcutaneous electrical nerve stimulation frequencies in nociception front of a pressure pain threshold and cold in healthy individuals.
  
  
  METHODS
  Twenty healthy subjects were divided into four groups, all of which have gone through all forms of electrical stimulation at different weeks. Assessments were pre and post-therapy, 20 and 60 minutes after stimulation. To evaluate the pressure pain threshold, an algometer was used with one tapered tip, pressing the hypothenar region until voluntary report the word "pain". Cold pain intensity was assessed by immersion in water at 5°C for 30 seconds; at the end, the subject was asked to quantify the pain intensity on a Visual Analog Scale for Pain. For electrical stimulation, two electrodes were used near the elbow, for 20 minutes, with an intensity strong, but not painful. The frequency was in accordance with the group: 0Hz (placebo); 7Hz; 100Hz; and 255Hz.
  
  
  RESULTS
  Both for the assessment of pressure pain threshold as the cold pain intensity, there was no significant difference (p>0.05).
  
  
  CONCLUSIONS
  We conclude that the use of transcutaneous electrical nerve stimulation on dermatomes C6 to C8 produced no significant change in pressure pain threshold or cold discomfort.
authors.affiliation: Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
authors.forename: Adriana de Oliveira
authors.initials: Ade O
authors.lastname: Gomes
authors.affiliation: Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
authors.forename: Ana Caroline
authors.initials: AC
authors.lastname: Silvestre
authors.affiliation: Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
authors.forename: Cristina Ferreira da
authors.initials: CF
authors.lastname: Silva
authors.affiliation: Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
authors.forename: Mariany Ribeiro
authors.initials: MR
authors.lastname: Gomes
authors.affiliation: Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
authors.forename: Maria Lúcia
authors.initials: ML
authors.lastname: Bonfleur
authors.affiliation: Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
authors.forename: Gladson Ricardo Flor
authors.initials: GR
authors.lastname: Bertolini
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D003080:Cold Temperature / Q000009:adverse effects; D005260:Female; D006801:Humans; D008297:Male; D010147:Pain Measurement; D017288:Pain Threshold / Q000502:physiology*; D011312:Pressure / Q000009:adverse effects; D011897:Random Allocation; D012016:Reference Values; D015203:Reproducibility of Results; D013997:Time Factors; D004561:Transcutaneous Electric Nerve Stimulation / Q000379:methods*; D016896:Treatment Outcome; D055815:Young Adult