The Development of Sit to Stand Trainer for the Elderly

Sairag Sa-adprai, Bunyong Rungroungdouyboon

Abstract


Strengthening exercise for lower limbs is required in elderly. Additionally, repeated sit to stands could improve lower limbs strength, reduce functional limitations and fall. The researchers have developed a Sit to Stand Trainer, a device that assists user to stand which offers variable levels of weight support. The Sit to Stand Trainer was validated by comparing both kinematics and kinetics between two experimental conditions; the movement that was assisted by Sit to Stand Trainer experimental condition (STST) to the natural movement that was unassisted by Sit to Stand Trainer experimental condition (No STST). The results in kinematics show significantly similarity in trunk, hip, knee, ankle angles and angular velocities including speed and distance of head between No STST to STST. However, in kinetics, rising and peak of vertical Ground Reaction Forces show significant decrease in STST compared to No STST. The results represent this device produces natural movement patterns and speed. Moreover, it also supports and helps to reduce body weight that contacted to the ground during the start phase and rising phase, consequently, stand up easier. Thus, therapists could possibly consider this device for training in clinical practice. This research also studied in six weeks of training with Sit to Stand Trainer which shows significantly improve in physical outcomes measurement tests (Berg Balance Scale, 30-second Chair Stand and 4-meter Gait Speed) among the elderly.


Keywords


Exercise Machine, Sit to Stand Trainer, Biomechanics of Sit to Stand, Elderly

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