-Loading Brace on the Activation of Femoral Muscles -A Preliminary Study-

نویسندگان

  • Eun-Hi Choi
  • Eun-Hye Choi
  • Sung-Won Choi
چکیده

Objective To provide the off -loading knee brace was designed relief for the pain associated with osteoarthritis by reduce loads on the degenerative compartment of the knee. Th is study examined the eff ects of the off -loading knee brace on activation of femoral muscles during squatting, slow and fast walking exercise in healthy young individuals. Method Ten healthy male subjects without a history of knee pain were recruited. Each subject was asked to do squatting, slow and fast walking exercises with a brace secured to the dominant leg. The same exercises were repeated without the brace. Surface electromyographic (sEMG) data was collected from the vastus medialis oblique (VMO), vastus lateralis (VL) and biceps femoris (BF) muscles from the dominant side of the leg. All dynamic root mean squre (RMS) values of sEMG were standardized to static RMS values of the maximal isometric contraction and expressed as a percentage of maximal activity. Results We found that VMO activity was signifi cantly decreased with application of the off -loading knee brace during squatting and fast walking exercise. However there were no signifi cant diff erences in VMO activity with application of the off -loading knee brace during slow walking exercise. Conclusion Th ese results suggest that the external moment of the brace which eff ectively stabilized the patella in the movement in which the knee joints become relatively unstable. Th e brace could be useful in the short term, but for long-term use, weakening of the VMO is predicted. Th erefore the program of selective muscular strength strengthening for the VMO should be emphasized.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effects of the Off-Loading Brace on the Activation of Femoral Muscles -A Preliminary Study-

OBJECTIVE To provide the off-loading knee brace was designed relief for the pain associated with osteoarthritis by reduce loads on the degenerative compartment of the knee. This study examined the effects of the off-loading knee brace on activation of femoral muscles during squatting, slow and fast walking exercise in healthy young individuals. METHOD Ten healthy male subjects without a histo...

متن کامل

The Immediate Effect of Knee Brace on the Activity of Selected Lower Limb Muscles during Stance Phase of Walking in Females with Patellofemoral Pain Syndrome

Background & Aims: The purpose of this study was to determine the immediate effect of patella support brace on co-contraction and electromyographic activity of selected lower limb muscles in females with patellofemoral pain syndrome during stance phase of gait. Methods: EMG activity of vastus lateralis, vastus medialis, rectus femoris, gastrocnemius, biceps femoris, semitendinosus, gluteus medi...

متن کامل

Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing

Objectives: The results of a few studies about the effects of ankle brace on muscles function during the performance of different tasks are contradictory. Moreover, the effect of brace on the co-contraction of ankle muscles is undiscovered. Therefore, the present study investigated the effect of brace usage on the ankle muscles activity and co-contraction during single-leg landing. Methods: Fi...

متن کامل

The Effect of Boston Brace on Muscle Length of Patients with Idiopathic Scoliosis

Purpose: This study aimed to assess the effect of Boston brace on trunk muscles length as well as lower limbs and trunk range of motion in patients with idiopathic scoliosis. Methods: Five patients with idiopathic scoliosis with C shape curve and mean (SD) age, height, and weight of respectively 12.61(1.16) years, 1.53(0.08) m, and 35.6(6.1) kg participated in this study. Spatiotemporal para...

متن کامل

Does an unloader brace reduce knee loading in normally aligned knees?

BACKGROUND Unloading knee braces often are used after tibiofemoral articular cartilage repair. However, the experimental basis for their use in patients with normal tibiofemoral alignment such as those undergoing cartilage repair is lacking. QUESTIONS/PURPOSES The purpose of this study was to investigate the effect of varus and valgus adjustments to one commercially available unloader knee br...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012