背景與目的：深層核心肌群在不同軀幹穩定任務下的收縮模式並不清楚。本篇研究的目的在於比較腹橫 虮及深層腰椎多裂肌在不同軀幹穩定任務下的收縮模式。方法：21位受試者進行5種不同的動作：腹部收縮 (ADIM)、趴姿下同側脚髖關節伸展並伴隨或無伴隨腹部收縮（DU)、姿姿下對側腳髖關節伸展並伴隨或無伴 隨腹部收縮（DC, C)使用超音波量測腹橫肌的肌肉厚度及滑動程度改變量以及深層腰椎多裂肌肌肉厚度的改 變量•雙因子及單因子重複測量變異敷分析資料。使用皮爾森相關係数分析腹横肌和深層腰椎多裂肌的肌肉厚 度改變量。結果：腹横肌的厚度在腹部收縮動作時較C和I動作時大(p < 0.005) ，腹橫肌的肌肉厚度改變量在腹部收縮動作時較C和I動作時大(P < 0.005) : DC動作時腹橫肌的肌肉厚度改變量較I動作時大0 < 0.005): DI動作時服横M的肌肉厚度改變量較C及I動作時大(p< 0.005);腹横肌肌肉滑動程度改變量在腹部收縮動 作時較DC、DI、C和I動作時大(p< 0.005):深層腰椎多裂肌的肌肉厚度改變量在DC、DI、C和I動作時較 ADTM動作時大(r= 0.005)。廢橫肌和深層腰椎多裂肌的肌肉厚度改變量在C動作時相關（r = 0.55,p<0.05)。 結論：腹部收縮較能有效綉發艘櫝肌收縮；下肢抬腿動作較能有效誘發深層腰椎多裂肌收縮。對惻腳抬高的動 作較能有效誘發腹橫肌和深層腰椎多裂肌的協同收縮。（物理治療2016;41(4):231-241)

Background and purpose: The activation of deep core muscles during different trunk stabilization tasks is not clear. The objective of the study is to compare the activation pattern of TrA and dMF during performing different tasks of trunk stabilization. Methods： Twenty one participants performed five tasks: an abdominal draw-in maneuver (ADIM), a prone hip extension with or without draw-in for rhe ipsilaceral leg (DI, I), and the contralateral leg (DC, C). Change of thickness (ΔT) and sliding (ΔX) of the TrA and ΔT of the dMF were measured by ultrasonography. Twoway and one-way repeated analysis of variance (ANOVA) was used for data analysis. ΔT of theTrA and the dMF were tested by the Pearson correlation. Results: TrA thickness during ADIM was greater when comparing to C and I (p < 0.005). ΔT of the TrA during ADIM was greater than those of I and C (p < 0.005); DC was greater than I (p < 0.005); and DI was greater than C ancl l (p < 0.005). AX during ADIM were greater than DC, DI, C and I (p < 0.005). ΔT of the dMF during DI, DC> I and C were greater chan ADIM (p < 0.005). Correlation between ΔT of the TrA and rhe dMF during C was found (r= 0.55, p < 0.05) Conclusion: The draw-in maneuver was favorable for activation of che TrA; the dMF has greater contraction during lifting the lower extremities. The co-contraction of the TrA and the dMF was identified during lifting of the contralateral lower extremity. (FJPT 2016;4l(4):231-241)