Motor alterations in the kinetic chain in individuals with chronic shoulder pain.

Background: Shoulder pain may be related to biomechanical dysfunctions in the kinetic chain.

Objective: To compare the mobility and muscular endurance of thoracolumbar spine and hip, and the neuromuscular control of the lower extremity of individuals with and without shoulder pain and to determine the discriminative capacity between groups of these variables.

Design: A cross-sectional study.

Use of low-level laser therapy (808 nm) to muscle fatigue resistance: a randomized double-blind crossover trial.

Objective: The purpose of this study was to investigate whether low-level laser (light) therapy (LLLT) can provide fatigue resistance via maximum repetitions (RM) with an isokinetic dynamometer, and decrease electromyography fatigue index (EFI).

Background Data: LLLT has been used to increase muscle performance when applied before or after intense exercises.

Materials And Methods: This study was a randomized, double-blind, crossover trial with placebo.