Boudreau Samantha N, Dwyer Maureen K, Mattacola Carl G, Lattermann Christian, Uhl Tim L, McKeon Jennifer Medina
Div of Athletic Training, University of Kentucky, Lexington, KY, USA.
J Sport Rehabil. 2009 Feb;18(1):91-103. doi: 10.1123/jsr.18.1.91.
Functional exercises are often used in strengthening programs after lower extremity injury. Activation levels of the stabilizing hip muscles have not been documented.
To document the progression of hip-muscle activation levels during 3 lower extremity functional exercises.
Cross-sectional.
Laboratory.
44 healthy individuals, 22 women and 22 men.
Subjects, in 1 testing session, completed 3 trials each of the lunge (LUN), single-leg squat (SLSQ), and step-up-and-over (SUO) exercise.
Root-mean-square muscle amplitude (% reference voluntary muscle contraction) was measured for 5 muscles during the 3 exercises: rectus femoris (RF), dominant and nondominant gluteus medius (GMed_D and GMed_ND), adductor longus (ADD), and gluteus maximus (GMX).
The RF, GMAX, and GMed_D were activated in a progression from least to greatest during the SUO, LUN, and SLSQ. The progression for the GMed_ND activation was from least to greatest during the SLSQ, SUO, and then LUN. Activation levels of the ADD showed no progression.
Progressive activation levels were documented for muscles acting on the hip joint during 3 functional lower extremity exercises. The authors recommend using this exercise progression when targeting the hip muscles during lower extremity strengthening.
功能锻炼常用于下肢损伤后的强化训练项目中。稳定髋关节肌肉的激活水平尚未有文献记载。
记录三种下肢功能锻炼过程中髋关节肌肉激活水平的变化。
横断面研究。
实验室。
44名健康个体，22名女性和22名男性。
受试者在一次测试中，对弓步蹲（LUN）、单腿深蹲（SLSQ）和跨上台阶（SUO）练习各完成3次试验。
在这三种练习过程中，测量5块肌肉的均方根肌电幅值（相对于参考自主肌肉收缩的百分比）：股直肌（RF）、优势侧和非优势侧臀中肌（GMed_D和GMed_ND）、长收肌（ADD）和臀大肌（GMX）。
在SUO、LUN和SLSQ练习中，RF、GMX和GMed_D的激活程度从低到高逐渐增加。GMed_ND的激活程度在SLSQ、SUO和LUN练习中从低到高逐渐增加。ADD的激活水平没有变化。
记录了三种下肢功能锻炼过程中作用于髋关节的肌肉激活水平的逐渐变化。作者建议在下肢强化训练中针对髋关节肌肉时采用这种锻炼顺序。
