Effects of wearing halo vest on gait: three-dimensional analysis in healthy subjects.

Study Design: The effects of a halo vest on the gait were studied. The motions of the head, shoulder girdle, trunk, and hip were analyzed with the vest and tong either connected by bars or unconnected.

Objective: To analyze effects of wearing a halo vest using three-dimensional motion analysis.

Postural reaction during maximum grasping maneuvers using a hand dynamometer in healthy subjects.

The purpose of this study was to quantitatively evaluate spontaneous body sway during maximum grasping maneuver with a hand dynamometer, which we sometimes encounter in clinical practice. The postural reaction of the whole body during maximum grasping maneuver was analyzed in 26 right-handed healthy male volunteers using a three-dimensional motion analysis system (VICON system, Oxford Metrics, UK) and force plates. We found that the gravity center of the body moved toward the grasping side.