Related Experiment Video
Updated: Mar 14, 2026
Controlled Rotation of Human Observers in a Virtual Reality Environment
Published on: April 21, 2022
Influence of the Perspectives on the Movement of One-Leg Lifting in an Interactive-Visual Virtual Environment: A
Chien-Hua Huang1,2, Chun Pei3, Tien-Lung Sun1
1Department of Industrial Engineering & Management, Yuan Ze University, Chung-Li, Taiwan.
Background:
Numerous studies have confirmed the feasibility of active video games for clinical rehabilitation. To maximize training effectiveness, a personal program is necessary; however, little evidence is available to guide individualized game design for rehabilitation. This study assessed the perspectives and kinematic and temporal parameters of a participant's postural control in an interactive-visual virtual environment.
Methods:
Twenty-four healthy participants performed one-leg standing by leg lifting when a posture frame appeared either in a first- or third-person perspective of a virtual environment. A foot force plate was used to detect the displacement of the center of pressure. A three-way mixed factor design was applied, where the perspective was the between-participant factor, and the leg-lifting times (0.7 and 2.7 seconds) and leg-lifting angles (30°and 90°) were the within-participant factors. The reaction time, accuracy of the movement, and ability to shift weight were the dependent variables.
Results:
Regarding the reaction time and accuracy of the movement, there were no significant main effects of the perspective, leg-lifting time, or angle. For the ability to shift weight, however, both the perspective and time exerted significant main effects, F(1,22) = 6.429 and F(1,22) = 13.978, respectively.
Conclusions:
Participants could shift their weight more effectively in the third-person perspective of the virtual environment. The results can serve as a reference for future designs of interactive-visual virtual environment as applied to rehabilitation.
