Stabilisation times after transitions to standing from different working postures
| Autor: | Jacob J. Banks, Raymond W. McGorry, Angela DiDomenico |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Adult
Male Engineering medicine.medical_specialty Waist Centre of pressure Posture Physical Therapy Sports Therapy and Rehabilitation Human Factors and Ergonomics Squat 03 medical and health sciences Young Adult 0302 clinical medicine Physical medicine and rehabilitation Task Performance and Analysis medicine Humans Postural Balance Simulation Balance (ability) business.industry Kneeling 030229 sport sciences Middle Aged Biomechanical Phenomena Squatting position business Factor Analysis Statistical human activities 030217 neurology & neurosurgery Quiet standing |
| Zdroj: | Ergonomics. 59(10) |
| ISSN: | 1366-5847 |
| Popis: | Transitioning to standing after maintaining working postures may result in imbalance and could elicit a fall. The objective of this study was to quantify the magnitude of imbalance using a stabilisation time metric. Forty-five male participants completed three replications of conditions created by one of four working postures (bent at waist, squat, forward kneel, reclined kneel) and three durations within posture. Participants transitioned to quiet standing at a self-selected pace. Stabilisation time, based on changes in centre of pressure velocity, was used to indicate the initiation of steady state while standing. Stabilisation time was significantly affected by static postures but not duration within posture. The largest stabilisation times resulted from transitions initiated from a bent at waist posture. The smallest were associated with the kneeling postures, which were not significantly different from each other. Findings may lead to recommendations for redesign of tasks, particularly in high-risk environments such as construction. Statement of Relevance: Task performance on the jobsite often requires individuals to maintain non-erect postures. This study suggests that working posture affects stabilisation during transition to a standing position. Bending at the waist and squatting resulted in longer stabilisation times, whereas both kneeling postures evaluated resulted in greater imbalance but for a shorter duration. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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