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Whole-body movements during rising to standing from sitting.
M Schenkman1, R A Berger, P O Riley
1Program in Physical Therapy, MGM Institute of Health Professions, Boston, MA 02108-3402.
Physical Therapy
|October 1, 1990
Summary
This study analyzes the four phases of rising from a chair, detailing the body
Area of Science:
- Biomechanics
- Human Movement Analysis
- Kinesiology
Background:
- Rising from a chair is a fundamental daily activity.
- Understanding the mechanics of this movement is crucial for assessing functional mobility.
Purpose of the Study:
- To conduct a comprehensive total-body analysis of the rising motion from a seated position.
- To identify and describe distinct phases within the chair rising activity.
Main Methods:
- Analysis of nine healthy individuals performing a controlled chair rising task.
- Detailed kinetic and kinematic analysis of the movement.
- Identification of four distinct phases: flexion-momentum, leaving the seat, extension, and stabilization.
Main Results:
- The chair rising process was segmented into four phases.
- Each phase exhibits unique momentum and stability characteristics.
- Phase II involves transferring upper body momentum to whole-body upward and forward momentum.
Conclusions:
- The study provides a detailed biomechanical breakdown of chair rising.
- Understanding these phases offers insights into functional mobility and potential clinical applications.
- The analysis highlights the importance of momentum transfer and stability throughout the movement.