. Author manuscript; available in PMC: 2016 Jul 1.

Published in final edited form as: Physiother Theory Pract. 2015 Jan 14;31(5):354–361. doi: 10.3109/09593985.2014.1003118

Table 2.

Parameters of light-emitting diode (LED) therapy (LEDT) and regions of LEDT irradiation on body before constant workload exercise tests (CWETs).

Number of LEDs: 50

Wavelength: 850±20 nm (infrared)

Frequency: continuous output

Optical output: 50mW

LED spot size: 0.2 cm²

Power density: 250mW cm⁻²

Treatment time over each muscle group: 15 s

Energy per diode at 15 s: 0.75 J

Energy density per diode at 15 s: 3.75 J cm⁻²

Number of irradiation points per muscle group: 50

Total energy delivered per muscle group: 37.5 J

Muscle groups irradiated before CWETs: (A) biceps brachii and triceps brachii; (B) external oblique and latissimus dorsi; (C) femoral quadriceps; (D) hamstrings; (E) tibialis anterior and peroneus longus; (F) gastrocnemius and soleus

Total energy delivered on body: 450 J

Total power output: 2500mW

Application mode: device held coupled in skin contact