Strain distribution on rat medial gastrocnemius (MG) during passive stretch

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Strain distribution on rat medial gastrocnemius (MG) during passive stretch.

Deformation of the surface of passive medial gastrocnemius muscle (MG) was measured in vivo while performing a hysteresis test. The gastrocnemius muscle of male rats were dissected free and the distal tendon was cut. The lateral head was separated from the medial head. The muscle origins were left intact. 60-70 fluorescent, polystyrene spheres (diameter 0.7 mm) were attached to the surface of t...

متن کامل

Regional variability of stretch reflex amplitude in the cat medial gastrocnemius muscle during a postural task.

The relationship between local fibre stretch velocity (mechanical input) and the corresponding local reflex electromyographic (EMG) amplitude (a measure of the neural output) was assessed to determine the contribution of muscle spindle feedback in postural control. We hypothesized that traditionally measured input variables (e.g., the velocity of an external movement or whole muscle velocity) m...

متن کامل

RAPID COMMUNICATION Regional Variability of Stretch Reflex Amplitude in the Cat Medial Gastrocnemius Muscle During a Postural Task

Eng, Janice J. and J. A. Hoffer. Regional variability of stretch length (Hoffer et al. 1989, 1992). During active movements, reflex amplitude in the cat medial gastrocnemius muscle during a extrafusal fibers can shorten while the muscle is lengthening postural task. J. Neurophysiol. 78: 1150–1154, 1997. The relationand vice-versa, and thus muscle spindle lengths cannot be ship between local fib...

متن کامل

Automatic tracking of medial gastrocnemius fascicle length during human locomotion.

During human locomotion lower extremity muscle-tendon units undergo cyclic length changes that were previously assumed to be representative of muscle fascicle length changes. Measurements in cats and humans have since revealed that muscle fascicle length changes can be uncoupled from those of the muscle-tendon unit. Ultrasonography is frequently used to estimate fascicle length changes during h...

متن کامل

Coordination of medial gastrocnemius and soleus forces during cat locomotion.

We studied force-sharing behavior between the cat medial gastrocnemius (MG) and soleus (SOL) muscles by direct measurement of the muscle forces and electromyographic activities (EMGs), muscle lengths, speeds of contraction, joint kinematics and kinetics, for a variety of locomotor conditions. Previous studies suggested that the modulation of MG force and activation is associated with movement d...

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

ژورنال

عنوان ژورنال: Journal of Biomechanics

سال: 1996

ISSN: 0021-9290

DOI: 10.1016/0021-9290(95)00162-x