Comparison of Trunk Strategy to Maintain Balance during the One-Leg Stance on a Medio-Lateral Ramp and an Anterior-Posterior Ramp.
10.18857/jkpt.2017.29.4.223
- Author:
Sang Yeol LEE
1
;
Myoung Hee LEE
Author Information
1. Department of Physical Therapy, College of Science, Kyungsung University, Busan, Korea.
- Publication Type:Original Article
- Keywords:
Trunk strategy;
One-leg stance;
Ramp
- MeSH:
Architectural Accessibility*;
Foot;
Humans;
Leg;
Male;
Pelvis;
Posture
- From:
Journal of Korean Physical Therapy
2017;29(4):223-226
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: This study examined two trunk strategies - medio-lateral ramp and anterior-posterior ram - and their effects on pelvis and trunk movements, providing basic material for safe ramp utilization. METHODS: The present study included 20 asymptomatic males recruited from a local university. Participants were asked to stand with their feet shoulder-width apart. Their dorsal side faced the camera, and measurements were performed while standing in a neutral double stance, one leg stance, 15° of medial and lateral ramp, and 15° of anterior and posterior ramp. Participants were allowed to practice for 3 minutes, and each participant had a 30 seconds rest between the two ramp conditions. One-way repeated measures analysis of variance was used to determine the effects the ramp conditions on spinal alignment. In all analyses, p<0.05 was used to indicate statistical significance. RESULTS: The trunk-inclination angle on the posterior ramp was significantly lower than that of the double stance position (p<0.05). The trunk imbalance angle was significantly higher on the medial ramp, than that on the double stance position (p<0.05). The pelvic position and pelvic torsion angles were significantly higher in the medial, lateral, and anterior ramp positions than that of the double stance position (p<0.05). The pelvic rotation angles on the medial, lateral, and anterior ramps were significantly lower than that of the double stance position (p<0.05). CONCLUSION: These findings suggest that when people are exposed to the same form of ramp for an extended period, posture modifications may be triggered.
