Unloading and shortening reactions in Parkinson's disease.
نویسندگان
چکیده
The unloading reflex was tested on both sides of a patient with asymmetrical Parkinsonism. The motor activity after the silent period was significantly greater on the more affected side. The findings support the hypothesis that the response to unloading and the shortening reaction share a common mechanism which is exaggerated in Parkinsonism.
منابع مشابه
Comparison of stretch reflexes and shortening reactions in activated normal subjects with those in Parkinson's disease.
The stretch reflexes and shortening reactions evoked in six normal subjects during reinforcement were compared with those recorded from patients with Parkinson's disease. Although the responses to stretch and shortening of triceps were similar in both groups, they differed in the biceps muscle. In Parkinson's disease increasing muscle stretch of biceps was associated with increasing reflex acti...
متن کاملQuantitative study of the effect of L-dopa and phenoxybenzamine on the rigidity of Parkinson's disease.
The static and dynamic components of the tonic stretch reflex and shortening reactions have been studied in biceps brachii, triceps, hamstrings, and quadriceps muscles of 19 patients with Parkinson's disease before and during L-dopa therapy. Clinical improvement during L-dopa administration correlated with a reduction in the dynamic component of the tonic stretch reflex in biceps, triceps, and ...
متن کاملVelocity of shortening of unloaded heart muscle and the length-tension relation.
A new technique permits removal of the resting force from the muscle during the course of shortening and study of the maximum velocity of shortening with almost zero load at physiological initial muscle lengths. This unloading has been performed as a sudden unloading to zero total load (zero load clamping), or according to the resting length-tension relations, or according to an arbitrary unloa...
متن کاملInvestigating effect of chamomile hydroalcoholic extract on movement disorders in the animal model of Parkinson's disease
Background & Aim:Parkinson's disease (PD) is a kind of disorder in the nervous system, which is characterized with multiple movement disorders. Factors such as oxidative stress are the most important causes for the degeneration of dopaminergic neurons in the substantia nigra and occurrence of Parkinson's disease. Thus, medications that have antioxidant functions could be an int...
متن کاملStrength-endurance training with olive oil consumption on motor performance and oxidative stress level in the brain of male parkinsonian rats.
Introduction: Parkinson's disease is a chronic brain disorder that occurs as a result of the loss, reduction or damage of dopamine-producing nerve cells in the substantia nigra located in the midbrain. The purpose of this study is to determine the effect of 8 weeks of strength-endurance training with olive oil consumption on motor performance and oxidative stress level in the brain of male park...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of neurology, neurosurgery, and psychiatry
دوره 41 10 شماره
صفحات -
تاریخ انتشار 1978