Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2015 Dec;27(12):3817-23.
doi: 10.1589/jpts.27.3817. Epub 2015 Dec 28.

Effect of high-intensity pulse irradiation with linear polarized near-infrared rays on muscle tone in patients with cerebrovascular disease: a randomized controlled trial

Nobuyuki Takeuchi  1 , Nobuhiro Takezako  2 , Yuko Shimonishi  3 , Shigeru Usuda  4
Affiliations

Effect of high-intensity pulse irradiation with linear polarized near-infrared rays on muscle tone in patients with cerebrovascular disease: a randomized controlled trial

Nobuyuki Takeuchi et al. J Phys Ther Sci. 2015 Dec.

Abstract

[Purpose] This study evaluated effects of a high-intensity linear polarized near-infrared ray irradiation for mitigation of muscle hypertonia. [Subjects] The subjects were 20 patients with cerebrovascular disease. [Methods] Subjects were randomly allocated to an intervention or control group. The intervention group received irradiation of the triceps surae. Passive range of motion and passive resistive joint torque of ankle dorsiflexion were measured before and after the intervention in knee extended and flexed positions. [Results] In the knee extended position, the mean changes in passive range of motion were 2.70° and -0.50° in the intervention and control groups, respectively, and the mean changes in passive resistive joint torque were -1.42 and -0.26 N·m in the intervention and control groups, respectively. In the knee flexed position, the mean changes in passive range of motion were 3.70° and 0.70° in the intervention and control groups, respectively, and the mean changes in passive resistive joint torque were -2.38 and -0.31 N·m in the intervention and control groups, respectively. In both knee positions, the mean changes in the two indices were greater in the intervention group than in the control group. [Conclusion] High-intensity linear polarized near-infrared ray irradiation increases passive range of motion and decreases passive resistive joint torque.

Keywords: Cerebrovascular disease; Infrared ray; Muscle tone.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
Flow diagram of the intervention and control groups Hi-LPNR: high-intensity polarized near-infrared ray
See this image and copyright information in PMC

References

    1. Asagai Y: Application of low reactive-level laser therapy (LLLT) in the functional training of cerebral palsy patients. Laser Ther, 1994, 6: 195–202.
    1. Demura S, Yamaji S, Ikemoto Y: Effect of linear polarized near-infrared light irradiation on flexibility of shoulder and ankle joints. J Sports Med Phys Fitness, 2002, 42: 438–445. - PubMed
    1. Demura T, Demura S, Aoki H, et al. : Effect of linear polarized near-infrared light irradiation and light exercise on muscle performance. J Physiol Anthropol, 2011, 30: 91–96. - PubMed
    1. Yokoyama K, Oku T: Rheumatoid arthritis-affected temporomandibular joint pain analgesia by linear polarized near infrared irradiation. Can J Anaesth, 1999, 46: 683–687. - PubMed
    1. Yokoyama K, Sugiyama K: Temporomandibular joint pain analgesia by linearly polarized near-infrared irradiation. Clin J Pain, 2001, 17: 47–51. - PubMed

LinkOut - more resources