- 期刊
Temporal and Kinetic Characteristics of Different Sit-to-Stand Movement Strategies in Females with Osteoporotic Vertebral Compression Fractures
女性骨鬆脊柱壓迫性骨折病患由坐到站不同動作策略在時間與動力學的特性
摘要
本研究的目的在定義骨鬆脊柱壓迫性骨折病患由坐到站(sit-to-stand, STS)的三種不同動作策略的動 力學特性的探討，以提供病人動作策略的參考依據。本研究共收集十四位女性骨鬆脊柱壓迫性骨折病患，平均年齡為68.2±7.8歲。受測病患坐在可調整、無把手、無靠背之椅子，雙腳放在壓力板上。分別測試三種坐站動作策略，包括簡單型、前屈型、伸展型三種方式。記錄其STS動作參數，包括STS的時間、水平與垂直動量、左右腳最大垂直作用力差距。前屈型STS動作模式提供最長之動作時間，而病患在離開座位前有較長的水平重心移動準備時間。此動作策略和簡單型相比較，其水平和垂直動量分別減少44%及24%。而和簡單型相比較，伸展型動作策略具有較小之左右腳最大垂直作用力差距。從結果發現，前屈型STS動作策略對骨鬆脊柱壓迫性骨折病患提供的STS 動作模式，減少起立時身軀之擺動，或許對此類病患在STS 動作中可提供較佳的穩定性。而伸展型動作策略具有較小之左右腳最大垂直作用力差距，其臨床意義仍需進一步探討。
並列摘要
The purpose of this investigation was to objectively identify the temporal and kinetic features of the three different sit-to-stand (STS) strategies in patients with osteoporotic vertebral compression fractures for possible future reference. Fourteen female patients, aged 68.2±7.8 years, with osteoporotic vertebral compression fractures were included. Subjects sat on a height adjustable, armless, backless chair with their feet on force plates to perform STS using simple, flexion, and extension strategies. Temporal and kinetic features, including STS duration, horizontal and vertical momentums, and maximal left-right vertical force differences (Max-LR-VF-Diff) were measured. The flexion strategy allowed for the longest overall STS duration. The flexion strategy's peak horizontal and vertical momentums during STS were 44% and 24% smaller in magnitude, respectively, than in the simple strategy. The extension strategy had a smaller Max-LR-VF-Diff between both feet than the simple strategy. We found that the flexion strategy gave a slower STS movement, which may have a role in simplifying the neuromuscular demand for motor control and trunk stability. The extension strategy seemed to offer a more symmetric STS pattern by reducing left-right weight distribution difference, and its clinical relevance warranted further investigation.