摘要:

In 20 healthy, young adult male subjects, the muscular activity of the upper, middle and lower trapezius and the lower digitations of the serratus anterior were studied electromyographically during arm abduction in the plane of the scapula. The patterns of electrical activity of the trapezius and lower serratus anterior muscles were observed to increase progressively during abduction of the arm; however, a plateau phase was demonstrated in all four of the muscle parts studied. Despite the presence of considerable individual variability, common trends were observed in muscular activity patterns. It is believed that the patterns of muscle activity may be closely related to mechanical factors such as scapulohumeral rhythm and a migrating scapular Instantaneous Centre of Rotation (ICR) during arm elevation.

ISSN:0002-9491    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

The effects of rapid brushing on the maximum voluntary contraction (MVC) and tonic vibratory reflex (TVR) of various muscles requiring facilitation (quadriceps, biceps femoris and tibialis anterior) were studied in two samples of hemiplegics. Brushing was studied under experimental and placebo conditions.In the first experiment, brushing produced significant facilitation of MVC and TVR in the quadriceps, replicating the findings of Spicer and Matyas (1980) and Matyas and Spicer (1980). However, the effect of the TVR failed to predict the gain in MVC that resulted from brushing.In the second sample of hemiplegics, brushing produced significant facilitation of the MVC and TVR in the biceps femoris but not in the tibialis anterior. The results for biceps femoris confirmed the results obtained with quadriceps. The failure to replicate this effect with tibialis anterior may have resulted from problems with the application of the stimulus to the relevant dermatome. Further exploration of the effect of cutaneous stimulation relating to this muscle is required to resolve this issue.The results of this experiment, with its replication of the facilitatory effect of brushing on TVR and MVC in two muscle groups, suggest that investigations of the effect of cutaneous stimulation on the acquisition and retention of voluntary movement should now take place.

ISSN:0002-9491    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

Evaluation of upper extremity function after a elective surgery with emphasis on the possible effect of contralateral therapy was done in 20 patients. This study was designed to test the postulate that range of motion exercises and work to muscle groups of one upper extremity has a beneficial effect on the analogous muscle groups in an immobilized, post-surgical contralateral extremity.Analysis of results show a small, but consistent, effect on range of motion measurements. However, strength measurements were shown to be markedly increased in the group receiving contralateral therapy to the normal extremity, as compared to the normal control group. Significant indirect training occurs by a cross-over phenomenon. Rehabilitation programs can be individually designed to enhance recovery of specific motor groups by utilizing contralateral therapy and cross-education principles. Further work is now underway to further elucidate specific clinical applications.

ISSN:0002-9491    

出版商:OVID    

年代:1986

数据来源: OVID

ISSN:0002-9491    

出版商:OVID    

年代:1986

数据来源: OVID

ISSN:0002-9491    

出版商:OVID    

年代:1986

数据来源: OVID