Feasibility of Assessing Muscle Displacement and Muscle Excursion on Muscle Fatigue, With and Without Preventive Strategies

The high-intensity laser used in this study is approved by the Ministry of Health and Welfare, Taiwan (No. 032670). It operates at a wavelength of 940 nm. For the active treatment (HILT), the laser delivers 900 joules to the quadriceps at a power output of 3 W for 5 minutes and is applied along the length of the quadriceps muscle

In the sham condition (SHAM), the output is set to 0 W for 5 minutes, resulting in no energy delivery.