Time-dependent changes in the stiffness of the neck extensor muscles with prolonged sitting and the effect of exercise.

BackgroundNeck and shoulder exercises are recommended to improve Neck and Shoulder Pain (NSP). However, it is unclear why exercises for the neck and shoulder improve NSP, and methods for evaluating the effects of these exercises have not been clear.ObjectiveThe purpose of this study was to investigate time-dependent changes in stiffness of the neck extensor muscles due to prolonged sitting and the effect of exercise.

Prolonged Sitting Causes Leg Discomfort in Middle Aged Adults: Evaluation of Shear Wave Velocity, Calf Circumference, and Discomfort Questionaries.

Introduction: Prolonged sitting causes leg discomfort. We evaluated shear wave velocity (SWV) of leg muscles, leg circumference, and leg discomfort associated with 2 h sitting.

Methods: Twenty-one middle-aged men and 19 middle-aged women participated in the study.