Local and systemic cardiovascular effects from monochromatic infrared therapy in patients with knee osteoarthritis: A double-blind, randomized, placebo-controlled study

Ru Lan Hsieh, Wei Cheng Liao, Wen Chung Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Infrared (IR) therapy is used for pain relief in patients with knee osteoarthritis (OA). However, IRs effects on the cardiovascular system remain uncertain. Therefore, we investigated the local and systemic cardiovascular effects of monochromatic IR therapy on patients with knee OA in a double-blind, randomized, placebo-controlled study. Seventy-one subjects with knee OA received one session of 40min of active or placebo monochromatic IR treatment (with power output of 6.24W, wavelength of 890nm, power density of 34.7mW/cm 2 for 40min, total energy of 41.6J/cm 2 per knee per session) over the knee joints. Heart rate, blood pressure, and knee arterial blood flow velocity were periodically assessed at the baseline, during, and after treatment. Data were analyzed by repeated-measure analysis of covariance. Compared to baseline, there were no statistically significant group x time interaction effects between the 2 groups for heart rate (P = 0.160), blood pressure (systolic blood pressure: P = 0.861; diastolic blood pressure: P = 0.757), or mean arterial blood flow velocity (P = 0.769) in follow-up assessments. The present study revealed that although there was no increase of knee arterial blood flow velocity, monochromatic IR therapy produced no detrimental systemic cardiovascular effects.

Original languageEnglish
Article number583016
JournalEvidence-based Complementary and Alternative Medicine
Volume2012
DOIs
Publication statusPublished - 2012

Fingerprint

Knee Osteoarthritis
Placebos
Blood Flow Velocity
Blood Pressure
Knee
Heart Rate
Therapeutics
Knee Joint
Cardiovascular System
Arterial Pressure
Pain

ASJC Scopus subject areas

  • Complementary and alternative medicine

Cite this

@article{6c16a20e328f4ccf8fab5015da5efb89,
title = "Local and systemic cardiovascular effects from monochromatic infrared therapy in patients with knee osteoarthritis: A double-blind, randomized, placebo-controlled study",
abstract = "Infrared (IR) therapy is used for pain relief in patients with knee osteoarthritis (OA). However, IRs effects on the cardiovascular system remain uncertain. Therefore, we investigated the local and systemic cardiovascular effects of monochromatic IR therapy on patients with knee OA in a double-blind, randomized, placebo-controlled study. Seventy-one subjects with knee OA received one session of 40min of active or placebo monochromatic IR treatment (with power output of 6.24W, wavelength of 890nm, power density of 34.7mW/cm 2 for 40min, total energy of 41.6J/cm 2 per knee per session) over the knee joints. Heart rate, blood pressure, and knee arterial blood flow velocity were periodically assessed at the baseline, during, and after treatment. Data were analyzed by repeated-measure analysis of covariance. Compared to baseline, there were no statistically significant group x time interaction effects between the 2 groups for heart rate (P = 0.160), blood pressure (systolic blood pressure: P = 0.861; diastolic blood pressure: P = 0.757), or mean arterial blood flow velocity (P = 0.769) in follow-up assessments. The present study revealed that although there was no increase of knee arterial blood flow velocity, monochromatic IR therapy produced no detrimental systemic cardiovascular effects.",
author = "Hsieh, {Ru Lan} and Liao, {Wei Cheng} and Lee, {Wen Chung}",
year = "2012",
doi = "10.1155/2012/583016",
language = "English",
volume = "2012",
journal = "Evidence-based Complementary and Alternative Medicine",
issn = "1741-427X",
publisher = "Hindawi Publishing Corporation",

}

TY - JOUR

T1 - Local and systemic cardiovascular effects from monochromatic infrared therapy in patients with knee osteoarthritis

T2 - A double-blind, randomized, placebo-controlled study

AU - Hsieh, Ru Lan

AU - Liao, Wei Cheng

AU - Lee, Wen Chung

PY - 2012

Y1 - 2012

N2 - Infrared (IR) therapy is used for pain relief in patients with knee osteoarthritis (OA). However, IRs effects on the cardiovascular system remain uncertain. Therefore, we investigated the local and systemic cardiovascular effects of monochromatic IR therapy on patients with knee OA in a double-blind, randomized, placebo-controlled study. Seventy-one subjects with knee OA received one session of 40min of active or placebo monochromatic IR treatment (with power output of 6.24W, wavelength of 890nm, power density of 34.7mW/cm 2 for 40min, total energy of 41.6J/cm 2 per knee per session) over the knee joints. Heart rate, blood pressure, and knee arterial blood flow velocity were periodically assessed at the baseline, during, and after treatment. Data were analyzed by repeated-measure analysis of covariance. Compared to baseline, there were no statistically significant group x time interaction effects between the 2 groups for heart rate (P = 0.160), blood pressure (systolic blood pressure: P = 0.861; diastolic blood pressure: P = 0.757), or mean arterial blood flow velocity (P = 0.769) in follow-up assessments. The present study revealed that although there was no increase of knee arterial blood flow velocity, monochromatic IR therapy produced no detrimental systemic cardiovascular effects.

AB - Infrared (IR) therapy is used for pain relief in patients with knee osteoarthritis (OA). However, IRs effects on the cardiovascular system remain uncertain. Therefore, we investigated the local and systemic cardiovascular effects of monochromatic IR therapy on patients with knee OA in a double-blind, randomized, placebo-controlled study. Seventy-one subjects with knee OA received one session of 40min of active or placebo monochromatic IR treatment (with power output of 6.24W, wavelength of 890nm, power density of 34.7mW/cm 2 for 40min, total energy of 41.6J/cm 2 per knee per session) over the knee joints. Heart rate, blood pressure, and knee arterial blood flow velocity were periodically assessed at the baseline, during, and after treatment. Data were analyzed by repeated-measure analysis of covariance. Compared to baseline, there were no statistically significant group x time interaction effects between the 2 groups for heart rate (P = 0.160), blood pressure (systolic blood pressure: P = 0.861; diastolic blood pressure: P = 0.757), or mean arterial blood flow velocity (P = 0.769) in follow-up assessments. The present study revealed that although there was no increase of knee arterial blood flow velocity, monochromatic IR therapy produced no detrimental systemic cardiovascular effects.

UR - http://www.scopus.com/inward/record.url?scp=84864941453&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84864941453&partnerID=8YFLogxK

U2 - 10.1155/2012/583016

DO - 10.1155/2012/583016

M3 - Article

C2 - 22792125

AN - SCOPUS:84864941453

VL - 2012

JO - Evidence-based Complementary and Alternative Medicine

JF - Evidence-based Complementary and Alternative Medicine

SN - 1741-427X

M1 - 583016

ER -