生態觀點指出看似非平衡必要的身體動作，實質上卻有助於個體覺知關鍵訊息以達成平衡站立的功能。本研究目的聚焦在使用不同的支撐器時，其身體擺動量的改變是否為一種知覺因應的指標。48名健康成人為實驗參與者，被分派至三個不同的動態環境組別，分別為移動室移動、車臺移動、與移動室與車臺共動。參與者以單腳站於以下操弄情境：一、支撐器包含單點支撐手杖、四腳支撐手杖、固定直立扶桿、上方固定拉把、以及上方懸垂拉環共五種。二、靜態環境與三種動態環境。實驗中記錄參與者與移動室產生的動作資料，並計算頭部擺動的變異，以混合設計二因子變異數分析，檢驗操弄效果的差異性。研究結果顯示：當個體站立在靜態環境中，四腳支撐手杖對姿勢穩定具有較佳的效果。在動態環境中，移動室與車臺共動的前後與左右身體擺動變異，皆明顯大於移動室移動或車臺移動，然而，提供支撐器的效果未能在動態環境中被觀察到，只有在移動室移動的情境，參與者使用上方固定拉把，有明顯降低左右方向身體擺動變異的現象。本研究結論為支撐器種類會影響個體在不同環境中維持單足平衡的姿勢控制，當周邊環境在靜止狀態下，四腳手杖的輔助能明顯地降低左右方向的身體擺動，此外，在移動的周邊環境裡（如移動室中），固定拉把有助於個體維持身體左右方向的穩定性。

The ecological perspectives revealed that body movements seemingly irrelevant to balance movement are actually helpful to pick up the critical information for stance stability. This study aimed to investigate whether the body sways can influence perception when standing with the help of various supporting aids in different perturbed environments. Forty-eight adult participants were assigned into three groups of dynamic environments, including room moving, car moving, and room-car moving together. Participants stood on a single leg in following manipulation conditions: (1) With the help of supporting aids, such as a stick, quadripod, handrail, strap hanger, and strap; (2) Stationary and dynamic environments. All kinematics of the participants were recorded to compute the variability of head motion during the experiment. Mixed-design two-way analyses of variance (ANOVAs) were adopted to analyze the effects of environments and supporting aids. The results showed that the quadripod was more effective to stabilize the stance when participants were standing in the static environment. In the dynamic environment, variabilities in anteroposterior and mediolateral axes for room-car moving were significantly higher than those for room moving or car moving conditions alone. However, the stabilizing effects among the supporting aids were not significantly different in dynamic environments. When participants used strap hanger, the supporting aid obviously reduced the mediolateral axis variability on the room moving. From these findings, we conclude that supporting aids affect the single-leg stance maintenance in different environments of the individual. Quadripod support significantly reduces the variability of the body sway in the mediolateral direction under the static environment. Moreover, in a dynamic environment (such as moving room), strap hanger helps participants to maintain stance stability in the mediolateral direction.